Company lists · Data refreshed September 2026

Top 25 Financial systems integration firms based in the United States

Name: Financial systems integration firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 251 companies tracked

RevenueBase identified 251 financial systems integration firms headquartered in the United States as of September 2026 and tracks 4,229 professional contacts across them, including 1,299 with verified work emails. New York is the largest hub.

This list covers financial systems integration firms headquartered in the 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 28, 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 28, 2026 86% judged on-target in blind review

251Companies

4,229Contacts tracked

1,299Verified emails

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The 25 largest financial systems integration firms based in the United States

Ranked by team size

Top 25 of 251 financial systems integration firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to financial systems integration 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	Chain-Sys Corporation	Indirect evidence	Rocklin, CA, United StatesHQ checked Sep 28, 2026	501-1,000	1,280 contacts →
	Indirect evidence “ChainSys is an innovator in the data management and business platform implementation (ERP) space.” Source: RevenueBase Database · checked Sep 28, 2026
2	Pairsoft	Partial evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	51-200	172 contacts →
	Partial evidence “PairSoft, one of the strongest financial automation platforms for mid-market and enterprise organizations, comprises a product lineup that natively integrates with Microsoft…” Source: RevenueBase Database · checked Sep 28, 2026
3	RPI Consultants	Strong evidence	Baltimore, MD, United StatesHQ checked Sep 28, 2026	51-200	169 contacts →
	Strong evidence “RPI Consultants is an ERP implementation, optimization, and software firm with over 25 years of experience delivering best practices through technology, systems integration, and…” Source: RevenueBase Database · checked Sep 28, 2026
4	MMC Convert	Indirect evidence	Chicago, United StatesHQ checked Sep 28, 2026	51-200	107 contacts →
	Indirect evidence “Over the past 12 years, MMC Convert has successfully completed over data conversions from various accounting software platforms to leading solutions like Xero, QuickBooks Online…” Source: RevenueBase Database · checked Sep 28, 2026
5	ELIRE	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	51-200	103 contacts →
	Indirect evidence “Elire is a Minneapolis based full-service software consulting firm created from the merging of several successful software consulting firms.” Source: RevenueBase Database · checked Sep 28, 2026
6	Ascend Partners INC	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	96 contacts →
	Partial evidence “Ascend Partners is the diamond standard in financial & data transformation solutions and proudly serves clients globally from our headquarters in New York, NY.” Source: RevenueBase Database · checked Sep 28, 2026
7	State Street LLC	Indirect evidence	Highland Park, IL, United StatesHQ checked Sep 28, 2026	51-200	91 contacts →
	Indirect evidence “Accelerating Growth We have entered into a definitive agreement with Brown Brothers Harriman (BBH) to acquire their Investor Services business-bringing together two premier…” Source: RevenueBase Database · checked Sep 28, 2026
8	Clients First Business Solutions	Strong evidence	Holmdel, NJ, United StatesHQ checked Sep 28, 2026	51-200	67 contacts →
	Strong evidence “Clients First provides tailored, financial and ERP systems and services for growing companies so they can achieve enterprise-level results.” Source: RevenueBase Database · checked Sep 28, 2026
9	LYSI	Partial evidence	Newport Beach, CA, United StatesHQ checked Sep 28, 2026	51-200	59 contacts →
	Partial evidence “Lysi is a diverse, dynamic, and versatile technology integration company specializing in the intersection of technology and business process management.” Source: RevenueBase Database · checked Sep 28, 2026
10	Convergesol	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	58 contacts →
	Partial evidence “ConvergeSol is a leading custom software development and consulting firm exclusively serving the financial services, SMB, and startup industries.” Source: RevenueBase Database · checked Sep 28, 2026
11	Cutek, INC	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 28, 2026	51-200	53 contacts →
	Partial evidence “CUTEK, with over a hundred combined years of industry expertise, provides a wide range of services for financial institutions, project management, merger assistance, conversion…” Source: RevenueBase Database · checked Sep 28, 2026
12	Protominds	Indirect evidence	Grapevine, TX, United StatesHQ checked Sep 28, 2026	51-200	49 contacts →
	Indirect evidence “Protominds is a premier FinTech Consulting & Services company headquartered in California.” Source: RevenueBase Database · checked Sep 28, 2026
13	Ninth Wave	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	46 contacts →
	Strong evidence “Ninth Wave delivers secure data connectivity to financial institutions through a single point of direct integration to a universal suite of open finance APIs.” Source: RevenueBase Database · checked Sep 28, 2026
14	Innovative IT	Indirect evidence	Brockton, MA, United StatesHQ checked Sep 28, 2026	n/a	45 contacts →
	Indirect evidence “Innovative IT provides cutting-edge technology solutions to help businesses streamline their operations and improve their bottom.” Source: RevenueBase Database · checked Sep 28, 2026
15	architect.xyz	Partial evidence	Remote, United StatesHQ checked Sep 28, 2026	n/a	39 contacts →
	Partial evidence “Fast, flexible, and secure financial infrastructure for trading firms, hedge funds, and professional investors.” Source: RevenueBase Database · checked Sep 28, 2026
16	Accutech Systems Corporation	Strong evidence	Muncie, IN, United StatesHQ checked Sep 28, 2026	201-500	38 contacts →
	Strong evidence “Since 1987, Accutech Systems Corporation (ASC) has been dedicated to providing only the highest quality products and services to the financial industry.” Source: RevenueBase Database · checked Sep 28, 2026
17	Bakerfield Solutions	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 28, 2026	11-50	37 contacts →
	Indirect evidence “Bakerfield Solutions are the Finance Transformation Experts you can rely on!” Source: RevenueBase Database · checked Sep 28, 2026
18	Raptor Trading Systems	Indirect evidence	New York City, NY, United StatesHQ checked Sep 28, 2026	51-200	37 contacts →
	Indirect evidence “Connectivity is one of the most critical links firms have to their clients, in a hyper competitive environment client.” Source: RevenueBase Database · checked Sep 28, 2026
19	AAC Consulting, INC	Indirect evidence	Edgartown, MA, United StatesHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence “AAC, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
20	Aiminsight Solutions, INC	Indirect evidence	Buena Park, CA, United StatesHQ checked Sep 28, 2026	11-50	31 contacts →
	Indirect evidence “At aimINSIGHT, we work with small and mid-sized companies throughout Southern California and have discovered that bridging the gap between your software’s basic capability and…” Source: RevenueBase Database · checked Sep 28, 2026
21	Venn Technology	Partial evidence	Southlake, TX, United StatesHQ checked Sep 28, 2026	11-50	29 contacts →
	Partial evidence “For the teams still importing and exporting data between systems, we take a people-first approach, dig into your unique processes, and build automated solutions so you can ditch…” Source: RevenueBase Database · checked Sep 28, 2026
22	Sygna Solutions	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	51-200	28 contacts →
	Indirect evidence “Sygna Solutions is a leading information technology firm, specializing in a diverse range of implementation integrated & Migration of SAP, Workday, Salesforces and IT Projects.” Source: RevenueBase Database · checked Sep 28, 2026
23	Arcsys Technologies	Partial evidence	Norfolk, VA, United StatesHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “The expert teams at ARCSys Technologies are trailblazers in the financial modeling and analytics industry.” Source: RevenueBase Database · checked Sep 28, 2026
24	Back Office LLC	Partial evidence	West Des Moines, IA, United StatesHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “The Back Office is a team of accounting, development, and administrative professionals that have been providing seamless accounting integration software and data conversion…” Source: RevenueBase Database · checked Sep 28, 2026
25	Twinsix	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “At TwinSix, we are dedicated to revolutionizing finance and accounting functions to drive peak efficiency and performance for businesses.” Source: RevenueBase Database · checked Sep 28, 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: financial systems integration 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 financial systems integration firms.
Partial evidence: Its own public description names part of financial systems integration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name financial systems integration 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 251 financial systems integration firms based in the United States

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Financial systems integration firms based in the United States at a glance

As of Sep 28, 2026

30.7%Verified-email coverage

16.8Average contacts per company

1-10Median size (employees)

6.8%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

148

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 251 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 financial systems integration 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 the United States whose own description of what they do matches “financial systems integration 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 financial systems integration 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 financial systems integration firms, and records with no verified work email. Companies headquartered outside United States 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, 1,299 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 28, 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.

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 financial systems integration 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 financial systems integration firms are there based in the United States?

RevenueBase identified 251 financial systems integration firms headquartered in the 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?

Chain-Sys Corporation, headquartered in Rocklin, tops this list with the largest team on record.

Which city has the most financial systems integration firms?

New York leads with 17 headquartered companies, followed by San Francisco (9) and Houston (7).

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 1,299 verified decision-maker contacts tracked across these 251 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 28, 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.