Company lists · Data refreshed September 2026

Top 25 Software engineering firms based in Chicago, United States

Name: Software engineering firms based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 477 companies tracked

RevenueBase identified 477 software engineering firms headquartered in Chicago, United States as of September 2026 and tracks 11,914 professional contacts across them, including 4,767 with verified work emails. New York is the largest hub.

This list covers software engineering firms 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 6, 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 6, 2026 86% judged on-target in blind review

477Companies

11,914Contacts tracked

4,767Verified emails

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The 25 largest software engineering firms based in Chicago, United States

Ranked by team size

Top 25 of 477 software engineering firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software engineering firms: 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	AHEAD	Partial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,989 contacts →
	“AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Source: company website · checked Sep 6, 2026
2	INDX	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	10001+	400 contacts →
	“Eng IndX is a global division of the Engineering Group, a leading software maker, system integrator and provider of technology solutions and services.” Source: company website · checked Sep 6, 2026
3	SDI Presence	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	391 contacts →
	“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: company website · checked Sep 6, 2026
4	SPR	Partial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	366 contacts →
	“SPR is a tech consultancy that builds AI-powered software designed to set businesses apart.” Source: company website · checked Sep 6, 2026
5	Beyond KEY	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	363 contacts →
	“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: company website · checked Sep 6, 2026
6	Redmane Technology LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	329 contacts →
	“RedMane is a software solutions and systems integration firm that helps health and human services organizations address their most complex challenges.” Source: company website · checked Sep 6, 2026
7	DMC Engineering	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	317 contacts →
	“DMC is an established project-based engineering and software development firm founded in 1996 serving customers worldwide from our offices in Chicago, Austin, Boston, Cincinnati…” Source: company website · checked Sep 6, 2026
8	Q1 Technologies, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	1,001-5,000	262 contacts →
	“Q1 Technologies is a global IT solutions and services provider focused on delivering innovative, scalable, and high-impact technology outcomes for enterprises worldwide.” Source: company website · checked Sep 6, 2026
9	PTS Consulting Services Global	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	251 contacts →
	“Overview PTS Consulting Services (People Technology Services), is a firm that specializes in providing IT consulting and Business consulting services.” Source: company website · checked Sep 6, 2026
10	KLIKA	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	190 contacts →
	“Building technology and custom solutions that define user experiences has established Klika's reputation worldwide.” Source: company website · checked Sep 6, 2026
11	Maven Wave, An Eviden Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	501-1,000	184 contacts →
	“As of April 2023, Maven Wave is now part of Eviden, at Atos business.” Source: company website · checked Sep 6, 2026
12	Krasan Consulting Services	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	172 contacts →
	“Krasan Consulting Services is a Chicago-based boutique management consulting and technology solutions integrator.” Source: company website · checked Sep 6, 2026
13	RKON	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	163 contacts →
	“Since 1998, RKON has delivered IT Transformation helping private equity and enterprise firms achieve Quiet IT from vision to execution.” Source: company website · checked Sep 6, 2026
14	Intersog	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	117 contacts →
	“Intersog® is a Chicago-based provider of software engineering, custom development, and IT consulting solutions.” Source: company website · checked Sep 6, 2026
15	Kenway Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	104 contacts →
	“Kenway Consulting is a management and technology consulting firm whose entire reason for existence is to help companies and its employees.” Source: company website · checked Sep 6, 2026
16	Adage Technologies	Partial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	91 contacts →
	“Adage is your ideal partner, experienced in software, ecommerce, and AI web solutions that combine strategic thinking with a passion for technology to advance your purpose.” Source: company website · checked Sep 6, 2026
17	Radicle INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	91 contacts →
	Source: company website · checked Sep 6, 2026
18	The Plum Tree Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	11-50	90 contacts →
	“The Plum Tree Group is an interactive agency focusing on solutions for emerging businesses.” Source: company website · checked Sep 6, 2026
19	Comtek International	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	88 contacts →
	“Comtek International, Inc.” Source: company website · checked Sep 6, 2026
20	Aberdeen Advisors LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	85 contacts →
	“Headquartered in Chicago, with satellite offices in India and Mexico, Aberdeen Advisors LLC is a boutique digital consultancy providing innovative products and services.” Source: company website · checked Sep 6, 2026
21	Soliant Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	76 contacts →
	“At Soliant, we build custom software solutions that break down growth barriers and open doors to new opportunities.” Source: company website · checked Sep 6, 2026
22	Benda Infotech	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	66 contacts →
	“We help businesses achieve more with innovative IT solutions.” Source: company website · checked Sep 6, 2026
23	DTI Diversified Technology INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	62 contacts →
	“DTI is a 100% African American-owned IT consulting and network services firm with nearly 40 years of experience.” Source: company website · checked Sep 6, 2026
24	Adifice Technologies	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	59 contacts →
	“Adifice Technologies is an IT development, services and products firm.” Source: company website · checked Sep 6, 2026
25	Logicon, LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	56 contacts →
	“At Logicon, we help businesses streamline operations, reduce manual work, and make technology effortless.” Source: company website · checked Sep 6, 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: software engineering firms. 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 software engineering firms.
Partial evidence: Its own public description names part of software engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software engineering firms. 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 477 software engineering firms based in Chicago, United States

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Software engineering firms based in Chicago, United States at a glance

As of Sep 6, 2026

40.0%Verified-email coverage

25.0Average contacts per company

11-50Median size (employees)

223.3%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

195

11-50

170

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 477 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 software engineering firms, 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 “software engineering firms”. 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 software engineering firms), 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 software engineering firms, 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, 4,767 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 6, 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.

Software engineering firms 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 software engineering firms, 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 software engineering firms are there based in Chicago, United States?

RevenueBase identified 477 software engineering firms 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?

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

Which city has the most software engineering firms?

New York leads with 1065 headquartered companies, followed by Houston (648) and Austin (633).

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 4,767 verified decision-maker contacts tracked across these 477 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 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 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.