Company lists · Data refreshed September 2026
Top 25 Nuclear engineering services companies based in France
RevenueBase identified 130 company matches for nuclear engineering services companies associated with France as of September 2026 and tracks 48,346 professional contacts across them, including 18,546 with verified work emails. Lyon is the largest hub.
This list covers company matches for nuclear engineering services companies associated with France, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 15, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest nuclear engineering services companies based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 12,439 contacts → | ||||
Exact match “Framatome is an international leader in nuclear energy recognized for its innovative, digital and value added solutions for the global nuclear fleet.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 2 | 11,121 contacts → | ||||
Exact match “Opérateur international reconnu dans le domaine des matières nucléaires, Orano apporte des solutions aux défis actuels et futurs, dans l’énergie et la santé.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 3 | 6,518 contacts → | ||||
Exact match “Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 4 | 1,780 contacts → | ||||
Exact match “Edvance, a joint subsidiary of EDF and Framatome, is responsible for the design and implementation (studies, procurement assistance, assembly and commissioning) of nuclear islands…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 5 | 1,664 contacts → | ||||
Exact match “Onet Technologies has 40 years of experience in the nuclear industry, with a strong expertise in engineering and services for reactor maintenance; dismantling, decommissioning and…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 6 | 1,537 contacts → | ||||
Exact match “Subsidiary of the world-leading VINCI group, NUVIA is an international company that has been operating on highly regulated and sensitive industrial sites for over 60 years.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 7 | 1,502 contacts → | ||||
Exact match “Welcome to Ekium!” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 8 | 1,315 contacts → | ||||
Exact match “TechnicAtome est spécialisée, depuis plus de 50 ans, dans la conception, la réalisation, la mise en service et le maintien en conditions opérationnelles des réacteurs nucléaires…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 9 | 1,079 contacts → | ||||
Exact match “À propos de SPIE Nucléaire Filiale de SPIE France, SPIE Nucléaire est le partenaire de référence multi-technique dans la conception, la réalisation, les travaux de modification…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 10 | 660 contacts → | ||||
Exact match “Depuis sa création en 2013, AptiSkills s’est imposée comme un acteur de référence avec plus de 10 agences réparties sur toute la France.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 11 | 558 contacts → | ||||
Exact match “We are now Orano!” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 12 | 485 contacts → | ||||
Exact match “Sur les centrales nucléaires du groupe EDF, nous intervenons sur tous les types de bâtiments, à la fois de production et tertiaires.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 13 | 406 contacts → | ||||
Exact match “Installation & Maintenance | Études, Ingénierie & Prestations Intellectuelles.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 14 | 211 contacts → | ||||
Exact match “Partner for the nuclear industry Bilfinger has successfully supported and advised customers from the nuclear industry for decades.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 15 | 163 contacts → | ||||
Exact match “Société d’ingénierie, ECIA, une marque d'Equans, est un acteur de la filière nucléaire dans le domaine de la maîtrise des risques.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 16 | 95 contacts → | ||||
Exact match “ROBATEL is a French company specialising in the design, manufacture and maintenance of mechanically welded equipment for the nuclear industry.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 17 | 78 contacts → | ||||
Exact match “Depuis 35 ans CSTI INDUSTRIE, est spécialiste des projets « clé en main » dans le domaine du nucléaire.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 18 | 73 contacts → | ||||
Exact match “TUNZINI Maintenance Nucléaire intervient lors des opérations d’arrêts de tranche pour la réalisation des travaux mécaniques et de manutention de gros composants en bâtiments…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 19 | 60 contacts → | ||||
Exact match “Graphitech is an engineering company in charge of technological development and engineering studies required in preparation for decommissioning nuclear reactors that use graphite…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 20 | 53 contacts → | ||||
Exact match “Depuis plus de 35 ans, EAI Ingénierie accompagne les acteurs de l’Industrie en apportant son savoir-faire en gestion de projet et supervision de chantier avec une spécialisation…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 21 | 52 contacts → | ||||
Exact match “Chez GDES, nous sommes convaincus que l’énergie nucléaire, hydraulique et éolienne représente l’avenir énergétique.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 22 | 50 contacts → | ||||
Exact match “Pour répondre à la demande énergétique croissante dans le monde, setec nucléaire accompagne les acteurs du nucléaire dans le développement de leurs projets.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 23 | 50 contacts → | ||||
Exact match “As a privately owned Consulting company, OAKRIDGE SAS is committed to advising Nuclear projects' leaders worldwide, with no conflict of interest.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 24 | 45 contacts → | ||||
Exact match “Crée en KURY Ingénierie est un bureau d'études spécialisé dans la conception et la sûreté nucléaire.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 25 | 33 contacts → | ||||
Exact match “PEINTURE, METALLISATION, REVÊTEMENTS TECHNIQUES DÉSAMIANTAGE ET DECONTAMINATION EN MILIEU INDUSTRIEL ET NUCLÉAIRE ECHAFAUDAGE, CONFINEMENT CALORIFUGE NJE est une entreprise…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “nuclear engineering services companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 130 nuclear engineering services companies based in France
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Nuclear engineering services companies based in France at a glance
As of Sep 15, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 130 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with France whose business descriptions match “nuclear engineering services companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 18,546 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 15, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “nuclear engineering services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many nuclear engineering services companies are there based in France?
RevenueBase identified 130 company matches for nuclear engineering services companies associated with France as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Framatome tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most nuclear engineering services companies?
Lyon leads with 10 company records, followed by Paris (7) and Marseille (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 18,546 professional contacts with verified work emails tracked across these 130 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 15, 2026.
Ready to reach these companies? Verified emails and direct dials for all 130 nuclear engineering services companies based in France. Start with a free account, no credit card.
Download this list →Related lists
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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- Lists A-Z
- New lists
- Nuclear engineering services companies based in Canada
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Company intelligence · public preview
Top 25 nuclear engineering services companies based in France
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 130 matching company records for nuclear engineering services companies based in France, with 48,346 tracked contacts and 18,546 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 15, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 nuclear engineering services companies based in France
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Framatomeframatome.comHQ: Courbevoie, FranceReported employees: 10001+ | Courbevoie, France | 10001+ | Exact match | 12,439 contacts → |
“Framatome is an international leader in nuclear energy recognized for its innovative, digital and value added solutions for the global nuclear fleet.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  ORANOorano.groupHQ: Châtillon, FranceReported employees: 10001+ | Châtillon, France | 10001+ | Exact match | 11,121 contacts → |
“Opérateur international reconnu dans le domaine des matières nucléaires, Orano apporte des solutions aux défis actuels et futurs, dans l’énergie et la santé.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Assystemassystem.comHQ: Courbevoie, FranceReported employees: 5,001-10,000 | Courbevoie, France | 5,001-10,000 | Exact match | 6,518 contacts → |
“Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Edvanceedvance.frHQ: Montrouge, FranceReported employees: 1,001-5,000 | Montrouge, France | 1,001-5,000 | Exact match | 1,780 contacts → |
“Edvance, a joint subsidiary of EDF and Framatome, is responsible for the design and implementation (studies, procurement assistance, assembly and commissioning) of nuclear islands…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Onet Technologiesonet.frHQ: Marseille, FranceReported employees: 1,001-5,000 | Marseille, France | 1,001-5,000 | Exact match | 1,664 contacts → |
“Onet Technologies has 40 years of experience in the nuclear industry, with a strong expertise in engineering and services for reactor maintenance; dismantling, decommissioning and…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  NUVIAnuvia.comHQ: Rueil Malmaison, FranceReported employees: 1,001-5,000 | Rueil Malmaison, France | 1,001-5,000 | Exact match | 1,537 contacts → |
“Subsidiary of the world-leading VINCI group, NUVIA is an international company that has been operating on highly regulated and sensitive industrial sites for over 60 years.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  EKIUMekium.comHQ: Lyon Cedex 07, FranceReported employees: 1,001-5,000 | Lyon Cedex 07, France | 1,001-5,000 | Exact match | 1,502 contacts → |
“Welcome to Ekium!” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Technicatometechnicatome.comHQ: Villiers-le-bâcle, FranceReported employees: 1,001-5,000 | Villiers-le-bâcle, France | 1,001-5,000 | Exact match | 1,315 contacts → |
“TechnicAtome est spécialisée, depuis plus de 50 ans, dans la conception, la réalisation, la mise en service et le maintien en conditions opérationnelles des réacteurs nucléaires…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Spie Nucléairespie.comHQ: Cergy-pontoise Cedex, FranceReported employees: 1,001-5,000 | Cergy-pontoise Cedex, France | 1,001-5,000 | Exact match | 1,079 contacts → |
“À propos de SPIE Nucléaire Filiale de SPIE France, SPIE Nucléaire est le partenaire de référence multi-technique dans la conception, la réalisation, les travaux de modification…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Aptiskillsaptiskills.frHQ: 92300 Levallois Perret, FranceReported employees: 1,001-5,000 | 92300 Levallois Perret, France | 1,001-5,000 | Exact match | 660 contacts → |
“Depuis sa création en 2013, AptiSkills s’est imposée comme un acteur de référence avec plus de 10 agences réparties sur toute la France.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  AREVAareva.comHQ: Paris La Defense, FranceReported employees: 10001+ | Paris La Defense, France | 10001+ | Exact match | 558 contacts → |
“We are now Orano!” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Dalkia ENdalkia.frHQ: Courbevoie, FranceReported employees: 501-1,000 | Courbevoie, France | 501-1,000 | Exact match | 485 contacts → |
“Sur les centrales nucléaires du groupe EDF, nous intervenons sur tous les types de bâtiments, à la fois de production et tertiaires.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Ardatemardatem.frHQ: Bourg Saint Andéol, FranceReported employees: 501-1,000 | Bourg Saint Andéol, France | 501-1,000 | Exact match | 406 contacts → |
“Installation & Maintenance | Études, Ingénierie & Prestations Intellectuelles.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Bilfinger Nuclearbilfinger.comHQ: Montrouge, FranceReported employees: 1,001-5,000 | Montrouge, France | 1,001-5,000 | Exact match | 211 contacts → |
“Partner for the nuclear industry Bilfinger has successfully supported and advised customers from the nuclear industry for decades.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  ECIAgroupe-ecia.comHQ: Bagnols Sur Ceze, FranceReported employees: 201-500 | Bagnols Sur Ceze, France | 201-500 | Exact match | 163 contacts → |
“Société d’ingénierie, ECIA, une marque d'Equans, est un acteur de la filière nucléaire dans le domaine de la maîtrise des risques.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Robatelrobatel.frHQ: Genas, FranceReported employees: 51-200 | Genas, France | 51-200 | Exact match | 95 contacts → |
“ROBATEL is a French company specialising in the design, manufacture and maintenance of mechanically welded equipment for the nuclear industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Csti Groupecsti-groupe.comHQ: Peyrolles-en-provence, FranceReported employees: 51-200 | Peyrolles-en-provence, France | 51-200 | Exact match | 78 contacts → |
“Depuis 35 ans CSTI INDUSTRIE, est spécialiste des projets « clé en main » dans le domaine du nucléaire.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Tunzini Maintenance Nucléairetunzinimn.fr HQ: Lyon, FranceReported employees: 51-200 | Lyon, France | 51-200 | Exact match | 73 contacts → |
“TUNZINI Maintenance Nucléaire intervient lors des opérations d’arrêts de tranche pour la réalisation des travaux mécaniques et de manutention de gros composants en bâtiments…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Graphitech Nucleargraphitech-nuclear.comHQ: Lyon, FranceReported employees: 11-50 | Lyon, France | 11-50 | Exact match | 60 contacts → |
“Graphitech is an engineering company in charge of technological development and engineering studies required in preparation for decommissioning nuclear reactors that use graphite…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  EAI Ingenierieeai-ingenierie.comHQ: Laudun L'ardoise, FranceReported employees: 11-50 | Laudun L'ardoise, France | 11-50 | Exact match | 53 contacts → |
“Depuis plus de 35 ans, EAI Ingénierie accompagne les acteurs de l’Industrie en apportant son savoir-faire en gestion de projet et supervision de chantier avec une spécialisation…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Gdes EN Francegdes.com HQ: Marseille, FranceReported employees: 51-200 | Marseille, France | 51-200 | Exact match | 52 contacts → |
“Chez GDES, nous sommes convaincus que l’énergie nucléaire, hydraulique et éolienne représente l’avenir énergétique.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Setec Nucléairetpi.setec.frHQ: Paris Cedex 12, FranceReported employees: 201-500 | Paris Cedex 12, France | 201-500 | Exact match | 50 contacts → |
“Pour répondre à la demande énergétique croissante dans le monde, setec nucléaire accompagne les acteurs du nucléaire dans le développement de leurs projets.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Oakridge SASoakridge.euHQ: Orleans, FranceReported employees: 51-200 | Orleans, France | 51-200 | Exact match | 50 contacts → |
“As a privately owned Consulting company, OAKRIDGE SAS is committed to advising Nuclear projects' leaders worldwide, with no conflict of interest.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Kury Ingénieriekury.frHQ: Clamart, FranceReported employees: 51-200 | Clamart, France | 51-200 | Exact match | 45 contacts → |
“Crée en KURY Ingénierie est un bureau d'études spécialisé dans la conception et la sûreté nucléaire.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | NJEnje.fr HQ: Cleppe, FranceReported employees: 51-200 | Cleppe, France | 51-200 | Exact match | 33 contacts → |
“PEINTURE, METALLISATION, REVÊTEMENTS TECHNIQUES DÉSAMIANTAGE ET DECONTAMINATION EN MILIEU INDUSTRIEL ET NUCLÉAIRE ECHAFAUDAGE, CONFINEMENT CALORIFUGE NJE est une entreprise…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 130 company matches
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Nuclear engineering services companies: dataset insights
September 15, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
129 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 130 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 15, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for nuclear engineering services companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many nuclear engineering services companies did RevenueBase find based in France?
The saved snapshot records 130 matching company records, 48,346 tracked contacts and 18,546 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 15, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Nuclear engineering services companies by geography
- Nuclear engineering services companies based in Canada
- Nuclear engineering services companies based in Germany
- Nuclear engineering services companies based in India
- Nuclear engineering services companies based in Spain
- Nuclear engineering services companies based in the United Kingdom
- Nuclear engineering services companies based in the United States
Cite this list
RevenueBase Data Team. Top 25 nuclear engineering services companies based in France. Snapshot: September 15, 2026. https://revenuebase.ai/companies/nuclear-engineering-services-companies/france.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Nuclear engineering services companies based in Canada
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- Nuclear engineering services companies based in India
- Nuclear engineering services companies based in Spain
- Nuclear engineering services companies based in the United Kingdom
- Nuclear engineering services companies based in the United States
Company intelligence · public preview
Top 25 nuclear engineering services companies based in France
RevenueBase records 130 matching company records for nuclear engineering services companies based in France, with 48,346 tracked contacts and 18,546 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 15, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 nuclear engineering services companies based in France
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Framatomeframatome.com HQ: Courbevoie, FranceReported employees: 10001+ | Courbevoie, France | 10001+ | Exact match | 12,439 contacts → |
“Framatome is an international leader in nuclear energy recognized for its innovative, digital and value added solutions for the global nuclear fleet.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | ORANOorano.group HQ: Châtillon, FranceReported employees: 10001+ | Châtillon, France | 10001+ | Exact match | 11,121 contacts → |
“Opérateur international reconnu dans le domaine des matières nucléaires, Orano apporte des solutions aux défis actuels et futurs, dans l’énergie et la santé.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Assystemassystem.com HQ: Courbevoie, FranceReported employees: 5,001-10,000 | Courbevoie, France | 5,001-10,000 | Exact match | 6,518 contacts → |
“Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Edvanceedvance.fr HQ: Montrouge, FranceReported employees: 1,001-5,000 | Montrouge, France | 1,001-5,000 | Exact match | 1,780 contacts → |
“Edvance, a joint subsidiary of EDF and Framatome, is responsible for the design and implementation (studies, procurement assistance, assembly and commissioning) of nuclear islands…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Onet Technologiesonet.fr HQ: Marseille, FranceReported employees: 1,001-5,000 | Marseille, France | 1,001-5,000 | Exact match | 1,664 contacts → |
“Onet Technologies has 40 years of experience in the nuclear industry, with a strong expertise in engineering and services for reactor maintenance; dismantling, decommissioning and…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | NUVIAnuvia.com HQ: Rueil Malmaison, FranceReported employees: 1,001-5,000 | Rueil Malmaison, France | 1,001-5,000 | Exact match | 1,537 contacts → |
“Subsidiary of the world-leading VINCI group, NUVIA is an international company that has been operating on highly regulated and sensitive industrial sites for over 60 years.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | EKIUMekium.com HQ: Lyon Cedex 07, FranceReported employees: 1,001-5,000 | Lyon Cedex 07, France | 1,001-5,000 | Exact match | 1,502 contacts → |
“Welcome to Ekium!” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Technicatometechnicatome.com HQ: Villiers-le-bâcle, FranceReported employees: 1,001-5,000 | Villiers-le-bâcle, France | 1,001-5,000 | Exact match | 1,315 contacts → |
“TechnicAtome est spécialisée, depuis plus de 50 ans, dans la conception, la réalisation, la mise en service et le maintien en conditions opérationnelles des réacteurs nucléaires…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Spie Nucléairespie.com HQ: Cergy-pontoise Cedex, FranceReported employees: 1,001-5,000 | Cergy-pontoise Cedex, France | 1,001-5,000 | Exact match | 1,079 contacts → |
“À propos de SPIE Nucléaire Filiale de SPIE France, SPIE Nucléaire est le partenaire de référence multi-technique dans la conception, la réalisation, les travaux de modification…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Aptiskillsaptiskills.fr HQ: 92300 Levallois Perret, FranceReported employees: 1,001-5,000 | 92300 Levallois Perret, France | 1,001-5,000 | Exact match | 660 contacts → |
“Depuis sa création en 2013, AptiSkills s’est imposée comme un acteur de référence avec plus de 10 agences réparties sur toute la France.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | AREVAareva.com HQ: Paris La Defense, FranceReported employees: 10001+ | Paris La Defense, France | 10001+ | Exact match | 558 contacts → |
“We are now Orano!” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Dalkia ENdalkia.fr HQ: Courbevoie, FranceReported employees: 501-1,000 | Courbevoie, France | 501-1,000 | Exact match | 485 contacts → |
“Sur les centrales nucléaires du groupe EDF, nous intervenons sur tous les types de bâtiments, à la fois de production et tertiaires.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Ardatemardatem.fr HQ: Bourg Saint Andéol, FranceReported employees: 501-1,000 | Bourg Saint Andéol, France | 501-1,000 | Exact match | 406 contacts → |
“Installation & Maintenance | Études, Ingénierie & Prestations Intellectuelles.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Bilfinger Nuclearbilfinger.com HQ: Montrouge, FranceReported employees: 1,001-5,000 | Montrouge, France | 1,001-5,000 | Exact match | 211 contacts → |
“Partner for the nuclear industry Bilfinger has successfully supported and advised customers from the nuclear industry for decades.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | ECIAgroupe-ecia.com HQ: Bagnols Sur Ceze, FranceReported employees: 201-500 | Bagnols Sur Ceze, France | 201-500 | Exact match | 163 contacts → |
“Société d’ingénierie, ECIA, une marque d'Equans, est un acteur de la filière nucléaire dans le domaine de la maîtrise des risques.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Robatelrobatel.fr HQ: Genas, FranceReported employees: 51-200 | Genas, France | 51-200 | Exact match | 95 contacts → |
“ROBATEL is a French company specialising in the design, manufacture and maintenance of mechanically welded equipment for the nuclear industry.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Csti Groupecsti-groupe.com HQ: Peyrolles-en-provence, FranceReported employees: 51-200 | Peyrolles-en-provence, France | 51-200 | Exact match | 78 contacts → |
“Depuis 35 ans CSTI INDUSTRIE, est spécialiste des projets « clé en main » dans le domaine du nucléaire.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Tunzini Maintenance Nucléairetunzinimn.fr HQ: Lyon, FranceReported employees: 51-200 | Lyon, France | 51-200 | Exact match | 73 contacts → |
“TUNZINI Maintenance Nucléaire intervient lors des opérations d’arrêts de tranche pour la réalisation des travaux mécaniques et de manutention de gros composants en bâtiments…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Graphitech Nucleargraphitech-nuclear.com HQ: Lyon, FranceReported employees: 11-50 | Lyon, France | 11-50 | Exact match | 60 contacts → |
“Graphitech is an engineering company in charge of technological development and engineering studies required in preparation for decommissioning nuclear reactors that use graphite…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | EAI Ingenierieeai-ingenierie.com HQ: Laudun L'ardoise, FranceReported employees: 11-50 | Laudun L'ardoise, France | 11-50 | Exact match | 53 contacts → |
“Depuis plus de 35 ans, EAI Ingénierie accompagne les acteurs de l’Industrie en apportant son savoir-faire en gestion de projet et supervision de chantier avec une spécialisation…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Gdes EN Francegdes.com HQ: Marseille, FranceReported employees: 51-200 | Marseille, France | 51-200 | Exact match | 52 contacts → |
“Chez GDES, nous sommes convaincus que l’énergie nucléaire, hydraulique et éolienne représente l’avenir énergétique.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Setec Nucléairetpi.setec.fr HQ: Paris Cedex 12, FranceReported employees: 201-500 | Paris Cedex 12, France | 201-500 | Exact match | 50 contacts → |
“Pour répondre à la demande énergétique croissante dans le monde, setec nucléaire accompagne les acteurs du nucléaire dans le développement de leurs projets.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Oakridge SASoakridge.eu HQ: Orleans, FranceReported employees: 51-200 | Orleans, France | 51-200 | Exact match | 50 contacts → |
“As a privately owned Consulting company, OAKRIDGE SAS is committed to advising Nuclear projects' leaders worldwide, with no conflict of interest.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Kury Ingénieriekury.fr HQ: Clamart, FranceReported employees: 51-200 | Clamart, France | 51-200 | Exact match | 45 contacts → |
“Crée en KURY Ingénierie est un bureau d'études spécialisé dans la conception et la sûreté nucléaire.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | NJEnje.fr HQ: Cleppe, FranceReported employees: 51-200 | Cleppe, France | 51-200 | Exact match | 33 contacts → |
“PEINTURE, METALLISATION, REVÊTEMENTS TECHNIQUES DÉSAMIANTAGE ET DECONTAMINATION EN MILIEU INDUSTRIEL ET NUCLÉAIRE ECHAFAUDAGE, CONFINEMENT CALORIFUGE NJE est une entreprise…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Nuclear engineering services companies: dataset insights
September 15, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
129 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 130 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 15, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for nuclear engineering services companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many nuclear engineering services companies did RevenueBase find based in France?
The saved snapshot records 130 matching company records, 48,346 tracked contacts and 18,546 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 15, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 nuclear engineering services companies based in France. Snapshot: September 15, 2026. https://revenuebase.ai/companies/nuclear-engineering-services-companies/france.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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