Company lists · Data refreshed November 2026

Top 25 Operations and maintenance consultants worldwide

RevenueBase identified 4,721 company matches for operations and maintenance consultants worldwide as of November 2026 and tracks 94,212 professional contacts across them, including 13,809 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for operations and maintenance consultants worldwide, 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 November 6, 2026. Country and city lists for operations and maintenance consultants follow the table.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
4,721Companies
94,212Contacts tracked
13,809Verified emails
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The 25 largest operations and maintenance consultants worldwide

Ranked by team size
Top 25 of 4,721 company matches for operations and maintenance consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchUtrecht, NetherlandsHQ recorded Nov 6, 202610001+4,163 contacts →

Exact match

“Stork is a global provider of integrated operations, maintenance, modification and asset integrity solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 20261,001-5,0003,671 contacts →

Exact match

“Impulsionamos a eficiência em operações críticas de engenharia, manutenção e logística principalmente no setores de Óleo e Gás, Mineração, Siderurgia, Energia e Infraestrutura no…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMacaé, BrazilHQ recorded Nov 6, 20261,001-5,0002,045 contacts →

Exact match

“No mercado há mais de duas décadas, a Axia é uma empresa nacional com atuação em operação e manutenção industrial.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchIssaquah, DE, United StatesHQ recorded Nov 6, 20261,001-5,0002,037 contacts →

Exact match

“NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchFontvieille, MonacoHQ recorded Nov 6, 20265,001-10,0002,035 contacts →

Exact match

“Dietsmann is the leading independent specialist in Operation & Maintenance services for continuous-production plant in the oil & gas and power industries with over 40 years of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSao Paulo, BrazilHQ recorded Nov 6, 20261,001-5,0001,846 contacts →

Exact match

“A IMC Saste, empresa fundada em 1992, tem atuação de abrangência nacional e unidades de negócio especializadas nas áreas de Facilities, Construção e Montagem, Manutenção…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBogotá, ColombiaHQ recorded Nov 6, 20261,001-5,0001,757 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPerth, AustraliaHQ recorded Nov 6, 20261,001-5,0001,250 contacts →

Exact match

“Lycopodium is an Australian headquartered engineering and project management consultancy which provides a complete range of services for the evaluation, development…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,109 contacts →

Exact match

“Consolidated Asset Management Services, LLC (CAMS) provides disciplined and diligent asset management and operations services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchStockholm, SwedenHQ recorded Nov 6, 20261,001-5,000980 contacts →

Exact match

“We are Quant – your maintenance partner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchAtyrau, KazakhstanHQ recorded Nov 6, 20261,001-5,000952 contacts →

Exact match

“Novus Bolashak are a Full Service Systems Completion & Long Term Maintenance & Operations Contractor, including Procurement, Sub-contracting, Punch Identification & Clearing, Pre…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 20265,001-10,000940 contacts →

Exact match

“Na Vinil Engenharia, acreditamos que a excelência técnica se alia à inovação inteligente para transformar desafios industriais em vantagem competitiva.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchVitória, BrazilHQ recorded Nov 6, 2026201-500801 contacts →

Exact match

“A SERENG é uma empresa de engenharia especializada em Projetos, Consultoria, Gerenciamento, Apoio Técnico e Gestão de Ativos (Manutenção), atuando nos mais diversos segmentos…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchDeer Park, LA, United StatesHQ recorded Nov 6, 20261,001-5,000728 contacts →

Exact match

“USA DeBusk serves the industrial infrastructure sector through a diverse and complementary suite of high-value traditional and specialty services for turnarounds, routine…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200592 contacts →

Exact match

“Our Rail Experts Have Transformed The Performance Of Britain’s Railway…They Can Help You Transform Yours Network Rail Consulting is the wholly owned international consultancy arm…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchViman Nagar, IndiaHQ recorded Nov 6, 2026501-1,000571 contacts →

Exact match

“RENOM describes itself as the India's first independent service provider, handling MW-class turbines and providing comprehensive O&M services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMadrid, SpainHQ recorded Nov 6, 20261,001-5,000528 contacts →

Exact match

“MASA interviene en toda la cadena de actividades en la vida de las instalaciones e infraestructuras, desde su fase de proyecto, hasta la construcción y montaje de la instalación…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAlverca Do Ribatejo, PortugalHQ recorded Nov 6, 20261,001-5,000507 contacts →

Exact match

“Mota-Engil ATIV is the new brand of the Mota-Engil Group that leverages the recognised knowledge and experience of Manvia and Vibeiras, promoting synergies and complementarity in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMontévrain, FranceHQ recorded Nov 6, 2026501-1,000462 contacts →

Exact match

“Spécialiste de la maintenance industrielle depuis plus de vingt ans, Fives intervient dans le cadre de contrats à obligation de résultats pour assurer la maintenance préventive…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500421 contacts →

Exact match

“Allied Reliability provides reliability and maintenance solutions across the lifecycle of your assets to deliver required throughput at lowest operating cost.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchJeddah, Saudi ArabiaHQ recorded Nov 6, 20261,001-5,000382 contacts →

Exact match

“Since 2007, BTAM has introduced itself to the Saudi market as a leading independent integrated solutions service provider for Operation and Maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchVincennes, MexicoHQ recorded Nov 6, 2026501-1,000373 contacts →

Exact match

“KLB Group is an international consulting firm specializing in operational performance for more than 25 years and bringing together nearly 750 employees worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSwedenHQ recorded Nov 6, 20261,001-5,000369 contacts →

Exact match

“The Jernbro Group is Scandinavia’s leading knowledge partner in industrial services for sustainable operational reliability, by bridging knowledge, technology and people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchParis, FranceHQ recorded Nov 6, 2026201-500360 contacts →

Exact match

“ECM (Engineering Conception Maintenance) a été créée en 1973 par le groupe CRIT, leader français du service aux entreprises dont le C.A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchVotorantim, BrazilHQ recorded Nov 6, 2026501-1,000322 contacts →

Exact match

“Com mais de 15 anos de experiência, somos uma empresa consolidada em terceirização e gestão de equipe na área de manutenção industrial e facilities.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 4,721 operations and maintenance consultants worldwide

See the full list, filter by size, metro and specialty, and access 13,809 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Operations and maintenance consultants worldwide at a glance

As of Nov 6, 2026
14.7%Verified-email coverage
20.0Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
2,894
11-50
1,123
51-200
421
201-500
119
501-1,000
58
1,001-5,000
61
5,001-10,000
12
10001+
7

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for operations and maintenance consultants are linked below.
What qualifies
Company records worldwide whose business descriptions match “operations and maintenance consultants” 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. 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 13,809 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 November 6, 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.

Operations and maintenance consultants by location

30 lists · largest first

Every Operations and maintenance consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “operations and maintenance consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many operations and maintenance consultants are there worldwide?

RevenueBase identified 4,721 company matches for operations and maintenance consultants worldwide as of November 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?

STORK tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most operations and maintenance consultants?

The United States leads with 719 companies, followed by Brazil (499) and Australia (248). Every operations and maintenance consultants list by country and city is linked on this page.

Which city has the most operations and maintenance consultants?

Sao Paulo leads with 67 company records, followed by Paris (34) and London (33).

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 13,809 professional contacts with verified work emails tracked across these 4,721 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 November 6, 2026.

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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.