Company lists · Data refreshed September 2026

Top 25 IT professional services companies based in Chicago, United States

Name: IT professional services companies based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 292 companies tracked

RevenueBase identified 292 IT professional services companies headquartered in Chicago, United States as of September 2026 and tracks 5,928 professional contacts across them, including 2,397 with verified work emails. Across the United States, New York is the largest hub for this category (583 companies); Chicago has 292.

This list covers IT professional services companies headquartered in Chicago, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

292Companies

5,928Contacts tracked

2,397Verified emails

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The 25 largest IT professional services companies based in Chicago, United States

Ranked by team size

Top 25 of 292 IT professional services companies based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to IT professional services companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Sikich	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,688 contacts →
	Partial evidence “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Source: RevenueBase Database · checked Sep 27, 2026
2	SDI Presence	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	391 contacts →
	Partial evidence “SDI Presence LLC is an IT consultancy and managed services provider (MSP) that leverages its strong team presence to advance our clients to a secure digital enterprise.” Source: RevenueBase Database · checked Sep 27, 2026
3	Beyond KEY	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	363 contacts →
	Indirect evidence “Our Journey of Growth, Trust, and Purpose Two decades ago, Beyond Key started with a vision not just to solve business problems with technology, but to create lasting impact.” Source: RevenueBase Database · checked Sep 27, 2026
4	Q1 Technologies, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	1,001-5,000	262 contacts →
	Partial evidence “Q1 Technologies is a global IT solutions and services provider focused on delivering innovative, scalable, and high-impact technology outcomes for enterprises worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
5	PTS Consulting Services Global	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	251 contacts →
	Partial evidence “Overview PTS Consulting Services (People Technology Services), is a firm that specializes in providing IT consulting and Business consulting services.” Source: RevenueBase Database · checked Sep 27, 2026
6	Glotel, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	219 contacts →
	Indirect evidence “Founded in 1989, Glotel opened its doors as a telecom staffing provider.” Source: RevenueBase Database · checked Sep 27, 2026
7	RL Canning	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	205 contacts →
	Partial evidence “RL Canning is a global IT managed service and consultancy dedicated to working alongside our customers to enhance the digital workplace with a clear focus on value by maximizing…” Source: RevenueBase Database · checked Sep 27, 2026
8	Krasan Consulting Services	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	172 contacts →
	Indirect evidence “Krasan Consulting Services is a Chicago-based boutique management consulting and technology solutions integrator.” Source: RevenueBase Database · checked Sep 27, 2026
9	RKON	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	163 contacts →
	Partial evidence “Since 1998, RKON has delivered IT Transformation helping private equity and enterprise firms achieve Quiet IT from vision to execution.” Source: RevenueBase Database · checked Sep 27, 2026
10	Access ONE INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	140 contacts →
	Indirect evidence “Access One is a business technology services and communications provider, dedicated to world-class technologies and an award-winning client experience.” Source: RevenueBase Database · checked Sep 27, 2026
11	ACP Creativit	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	103 contacts →
	Indirect evidence “ACP CreativIT is focused on business outcomes and providing long-standing solutions to our customers that incorporates world-class technology.” Source: RevenueBase Database · checked Sep 27, 2026
12	Comtek International	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	88 contacts →
	Indirect evidence “Comtek International, Inc.” Source: RevenueBase Database · checked Sep 27, 2026
13	Bostrom	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	72 contacts →
	Partial evidence “Bostrom is a professional services firm offering comprehensive management, consulting and outsourcing to the not-for-profit community.” Source: RevenueBase Database · checked Sep 27, 2026
14	DTI Diversified Technology INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	62 contacts →
	Partial evidence “DTI is a 100% African American-owned IT consulting and network services firm with nearly 40 years of experience.” Source: RevenueBase Database · checked Sep 27, 2026
15	Bluerock	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	53 contacts →
	Indirect evidence “BlueROCK was founded on the premise that all companies should have a trusted partner for unbiased technology advice and guidance.” Source: RevenueBase Database · checked Sep 27, 2026
16	Mars-Technominds, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	43 contacts →
	Indirect evidence “MARS-Technominds has indeed come a long way in setting high standards in technology and consulting services and has certainly proved to be a force to reckon with since its…” Source: RevenueBase Database · checked Sep 27, 2026
17	Simetrica Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	40 contacts →
	Indirect evidence “Simetrica Consulting is a computer software company based out of Ave.” Source: RevenueBase Database · checked Sep 27, 2026
18	NPO USA INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	51-200	37 contacts →
	Indirect evidence “We are NPO USA!” Source: RevenueBase Database · checked Sep 27, 2026
19	Ec-United	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	36 contacts →
	Partial evidence “EC-United is a boutique executive consulting firm adept at providing clients with executive services such as IT assessments, strategies, performance management, interim leaders…” Source: RevenueBase Database · checked Sep 27, 2026
20	US Software Professionals INC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	36 contacts →
	Strong evidence “USSP (US Software Professionals Inc) is a best in class IT consulting firm offering end to end service and implementation solutions to clients worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
21	Smart Technology Services, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	32 contacts →
	Indirect evidence “At SMaRT Technology Services, our resources are dedicated to helping businesses, schools and governmental agencies by making sure their organization's technology is highly…” Source: RevenueBase Database · checked Sep 27, 2026
22	Actminds, INC	Indirect evidence	Chicago, United StatesHQ checked Sep 27, 2026	501-1,000	25 contacts →
	Indirect evidence “At Actminds we envision great outcomes in the partnership between our customers, employees, and alliances.” Source: RevenueBase Database · checked Sep 27, 2026
23	Solai & Cameron Technologies	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	501-1,000	23 contacts →
	Partial evidence “Solai & Cameron (S&C) identifies emerging IT trends, conducts vital research and development for new technologies, and fosters the best entrepreneurial talent to support future…” Source: RevenueBase Database · checked Sep 27, 2026
24	Vbridge Global LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	11-50	23 contacts →
	Partial evidence “VBridgeGlobal LLC is a niche IT Services and Consulting organization in Illinois.” Source: RevenueBase Database · checked Sep 27, 2026
25	Curetech Services	Partial evidence	Chicago, United StatesHQ checked Sep 27, 2026	11-50	22 contacts →
	Partial evidence “Founded in 2022, CureTech Services has established itself as a trusted name in the domain of IT Consulting and Staffing Services.” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: IT professional services companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names IT professional services companies.
Partial evidence: Its own public description names part of IT professional services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT professional services companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 292 IT professional services companies based in Chicago, United States

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IT professional services companies based in Chicago, United States at a glance

As of Sep 27, 2026

40.4%Verified-email coverage

20.3Average contacts per company

11-50Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

133

11-50

102

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 292 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among IT professional services companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Chicago, United States whose own description of what they do matches “IT professional services companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names IT professional services companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among IT professional services companies, and records with no verified work email. Companies headquartered outside Chicago are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 2,397 across the full list. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

IT professional services companies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names IT professional services companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many IT professional services companies are there based in Chicago, United States?

RevenueBase identified 292 IT professional services companies headquartered in Chicago, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Sikich, headquartered in Chicago, tops this list with the largest team on record.

Which city in the United States has the most IT professional services companies?

New York leads the United States with 583 headquartered companies, followed by Houston (455) and Dallas (343). Chicago has 292.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,397 verified decision-maker contacts tracked across these 292 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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 Smart Search, 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.