Company lists · Data refreshed September 2026

Top 25 Operational technology consulting firms worldwide

Name: Operational technology consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 38,116 companies tracked

RevenueBase identified 38,116 company matches for operational technology consulting firms worldwide as of September 2026 and tracks 565,525 professional contacts across them, including 158,824 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for operational technology consulting firms 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 September 29, 2026. Country and city lists for operational technology consulting firms 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 Sep 29, 2026 How this list was built

38,116Companies

565,525Contacts tracked

158,824Verified emails

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The 25 largest operational technology consulting firms worldwide

Ranked by team size

Top 25 of 38,116 company matches for operational technology consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Protiviti	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 29, 2026	5,001-10,000	8,779 contacts →
	Exact match “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	Bearingpoint	Exact match	Amsterdam, NetherlandsHQ recorded Sep 29, 2026	5,001-10,000	8,106 contacts →
	Exact match “BearingPoint is an independent management and technology consultancy.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	Wavestone	Exact match	100-101 Terrasse Boieldieu, FranceHQ recorded Sep 29, 2026	1,001-5,000	6,190 contacts →
	Exact match “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	Groupe SII	Exact match	Paris, FranceHQ recorded Sep 29, 2026	10001+	4,928 contacts →
	Exact match “Le groupe SII est une société d’ingénierie et de conseil en technologies (ICT) et une entreprise de services numériques (ESN) créée en 1979 par Bernard HUVÉ, ingénieur de…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Amaris Consulting	Exact match	Chêne-bourg, SwitzerlandHQ recorded Sep 29, 2026	5,001-10,000	4,824 contacts →
	Exact match “Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Management Solutions	Exact match	Madrid, SpainHQ recorded Sep 29, 2026	1,001-5,000	4,468 contacts →
	Exact match “Management Solutions is a leading provider of business consulting services for regulated industries.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Bilfinger	Exact match	Mannheim, GermanyHQ recorded Sep 29, 2026	10001+	4,035 contacts →
	Exact match “Bilfinger is an international industrial services provider with a vision to be the No.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	Genpact Headstrong Capital Markets	Exact match	Reston, VA, United StatesHQ recorded Sep 29, 2026	10001+	3,109 contacts →
	Exact match “Genpact Headstrong Capital Markets is a global consulting and IT services company with a specialized focus in capital markets.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	Alten Italia	Exact match	Milano, ItalyHQ recorded Sep 29, 2026	1,001-5,000	3,085 contacts →
	Exact match “Il Gruppo ALTEN, leader europeo nella consulenza per le tecnologie avanzate in campo ingegneristico e ICT, è quotato alla Borsa di Parigi e vanta più di 57.700 collaboratori in…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	AHEAD	Exact match	Chicago, IL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,989 contacts →
	Exact match “AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Entrust Solutions Group	Exact match	Lisle, IL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,966 contacts →
	Exact match “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	AUBAY	Exact match	Boulogne Billancourt, FranceHQ recorded Sep 29, 2026	5,001-10,000	2,670 contacts →
	Exact match “Present in 7 countries in Europe, Aubay has more than 7800 employees and has generated revenues of € 513,5 million in 2022, with year on year growth consistently.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Hexagon Asset Lifecycle Intelligence	Exact match	Madison, AL, United StatesHQ recorded Sep 29, 2026	10001+	2,630 contacts →
	Exact match “Hexagon’s Asset Lifecycle Intelligence division helps clients design, construct and operate more profitable, safe and sustainable industrial facilities.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Speridian Technologies	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,619 contacts →
	Exact match “Speridian Technologies is a global consulting and technology services firm that helps enterprises and public sector organizations modernize operations, enhance customer experience…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Etteplan	Exact match	Espoo, FinlandHQ recorded Sep 29, 2026	1,001-5,000	2,510 contacts →
	Exact match “We are a technology service company that, with our thinkers and doers, enable breakthroughs that help industrial businesses change.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	EOH	Exact match	Johannesburg, South AfricaHQ recorded Sep 29, 2026	1,001-5,000	2,093 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	Yokogawa India Limited	Exact match	Bangalore, IndiaHQ recorded Sep 29, 2026	1,001-5,000	1,803 contacts →
	Exact match “Yokogawa India Limited, incorporated in 1987, is an affiliate of Yokogawa Electric Corporation, Japan, having strong marketing and service network across India.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Accenture Poland	Exact match	Warszawa, PolandHQ recorded Sep 29, 2026	5,001-10,000	1,738 contacts →
	Exact match “Accenture to wiodąca, globalna firma świadcząca profesjonalne usługi na rzecz przedsiębiorstw, będących światowymi liderami, a także organizacji rządowych i pozarządowych.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Future Focus Infotech Private Limited	Exact match	Sharjah, JapanHQ recorded Sep 29, 2026	1,001-5,000	1,608 contacts →
	Exact match “Enabling Your Digital Future Future Focus Infotech (FFI) is your strategic partner for transformative digital solutions and IT consulting.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Solita	Exact match	Tampere, FinlandHQ recorded Sep 29, 2026	1,001-5,000	1,495 contacts →
	Exact match “We create impact that lasts by combining tech, data and human insight.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	DSS	Exact match	Geneva, United KingdomHQ recorded Sep 29, 2026	1,001-5,000	1,493 contacts →
	Exact match “dss⁺ is the operational transformation partner for complex and high-hazard industries.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	LEVIO	Exact match	Québec, QC, CanadaHQ recorded Sep 29, 2026	1,001-5,000	1,403 contacts →
	Exact match “Levio is a leading North American technology‑focused consulting firm and one of the two largest system integrators fully owned by Canadian interests, specializing in digital…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Sofrecom Tunisie	Exact match	Tunis, TunisiaHQ recorded Sep 29, 2026	1,001-5,000	1,397 contacts →
	Exact match “Sofrecom, filiale du groupe France Télécom - Orange, a développé depuis plus de 45 ans un savoir-faire unique dans les métiers de l’opérateur, qui en fait aujourd’hui l’un des…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Canvia	Exact match	Surco, PeruHQ recorded Sep 29, 2026	1,001-5,000	1,365 contacts →
	Exact match “We are CANVIA, an innovation and reinvention company At CANVIA we boost and support the digital transformation process of our clients.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	Trace3	Exact match	Irvine, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,345 contacts →
	Exact match “Trace3 delivers business transformation.” Recorded in the RevenueBase company graph · Sep 29, 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 “operational technology consulting firms”. 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 38,116 operational technology consulting firms worldwide

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Operational technology consulting firms worldwide at a glance

As of Sep 29, 2026

28.1%Verified-email coverage

14.8Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

22,806

11-50

10,740

51-200

3,307

201-500

705

501-1,000

240

1,001-5,000

175

5,001-10,000

10001+

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 operational technology consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “operational technology consulting firms” 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 158,824 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 29, 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.

Operational technology consulting firms by location

196 lists · largest first

Every Operational technology consulting firms 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 “operational technology consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many operational technology consulting firms are there worldwide?

RevenueBase identified 38,116 company matches for operational technology consulting firms worldwide 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?

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

Which country has the most operational technology consulting firms?

The United States leads with 7,859 companies, followed by Brazil (2,345) and India (2,004). Every operational technology consulting firms list by country and city is linked on this page.

Which city has the most operational technology consulting firms?

Sao Paulo leads with 568 company records, followed by London (523) and Paris (477).

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 158,824 professional contacts with verified work emails tracked across these 38,116 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 29, 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.