Company lists · Data refreshed September 2026

Top 25 Fintech SaaS development companies based in the United States

Name: Fintech SaaS development companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 2,201 companies tracked

RevenueBase identified 2,201 fintech SaaS development companies headquartered in the United States as of September 2026 and tracks 101,806 professional contacts across them, including 39,169 with verified work emails. New York is the largest hub.

This list covers fintech SaaS development companies 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 21, 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 21, 2026 86% judged on-target in blind review

2,201Companies

101,806Contacts tracked

39,169Verified emails

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The 25 largest fintech SaaS development companies based in the United States

Ranked by team size

Top 25 of 2,201 fintech SaaS development companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to fintech SaaS development 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	FIS	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 21, 2026	10001+	38,885 contacts →
	Indirect evidence “Unlocking financial technology.” Source: RevenueBase Database · checked Sep 21, 2026
2	Jack Henry	Indirect evidence	Monett, MO, United StatesHQ checked Sep 21, 2026	5,001-10,000	6,759 contacts →
	Indirect evidence “Jack Henry (Nasdaq: JKHY) is a well-rounded financial technology company that strengthens the connections between people and their financial institutions through technology and…” Source: RevenueBase Database · checked Sep 21, 2026
3	Chetu, INC	Partial evidence	Sunrise, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,943 contacts →
	Partial evidence “Chetu is your seamless backend technology partner, helping startups, SMBs, and Fortune companies accelerate development of desktop, mobile, and web apps with on-demand developers…” Source: RevenueBase Database · checked Sep 21, 2026
4	Arcesium	Indirect evidence	New York City, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,637 contacts →
	Indirect evidence “Arcesium is a global financial technology company delivering front-to-back technology solutions for some of the world’s most sophisticated financial institutions, including hedge…” Source: RevenueBase Database · checked Sep 21, 2026
5	Exadel	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,874 contacts →
	Partial evidence “Exadel is a leading global software consulting and development company that looks beyond the code to maximize the technology-driven business impact our partners want to make.” Source: RevenueBase Database · checked Sep 21, 2026
6	I2c INC	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,821 contacts →
	Indirect evidence “An award-winning global financial technology innovator powering credit, debit, prepaid, core banking, and money movement solutions, i2c unifies banking and payments in an…” Source: RevenueBase Database · checked Sep 21, 2026
7	Odessa	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,189 contacts →
	Indirect evidence “Headquartered in Philadelphia, USA, Odessa is a software company exclusively focused in the leasing industry.” Source: RevenueBase Database · checked Sep 21, 2026
8	Mercury	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,149 contacts →
	Partial evidence “Mercury is the fintech ambitious companies use for banking* and all their financial workflows.” Source: RevenueBase Database · checked Sep 21, 2026
9	Cross River	Indirect evidence	Fort Lee, NJ, United StatesHQ checked Sep 21, 2026	501-1,000	931 contacts →
	Indirect evidence “Cross River Bank provides technology infrastructure powering the future of financial services.” Source: RevenueBase Database · checked Sep 21, 2026
10	Folio3 Software	Partial evidence	San Mateo, CA, United StatesHQ checked Sep 21, 2026	501-1,000	846 contacts →
	Partial evidence “Folio3 is a California based software development company that helps entrepreneurs and large corporations build innovative, world class software solutions by providing offshore…” Source: RevenueBase Database · checked Sep 21, 2026
11	Fullsteam	Indirect evidence	Auburn, AL, United StatesHQ checked Sep 21, 2026	1,001-5,000	633 contacts →
	Indirect evidence “Backed by Aquiline Capital Partners and ADIA, Fullsteam is a dynamic and growing team of over 2,100 employees committed to driving innovation and delivering best-in-class software…” Source: RevenueBase Database · checked Sep 21, 2026
12	ARGO	Indirect evidence	Richardson, TX, United StatesHQ checked Sep 21, 2026	201-500	577 contacts →
	Indirect evidence “Founded in 1980, ARGO is a leader in mission-critical and analytical software.” Source: RevenueBase Database · checked Sep 21, 2026
13	Fingent	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	501-1,000	551 contacts →
	Partial evidence “Fingent, an award-winning and ISO 27001:2013-certified custom software development company, is a trusted partner for businesses seeking strategic IT solutions.” Source: RevenueBase Database · checked Sep 21, 2026
14	IMM Esign NOW Kinective	Indirect evidence	Gilbert, AZ, United StatesHQ checked Sep 21, 2026	201-500	481 contacts →
	Indirect evidence “IMM / eSign is now Kinective.” Source: RevenueBase Database · checked Sep 21, 2026
15	Sigma Infosolutions LTD	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	201-500	454 contacts →
	Indirect evidence “Sigma Infosolutions is a prominent provider of technology solutions and services globally, with our headquarters in Irvine, USA, and global offices in Australia & India.” Source: RevenueBase Database · checked Sep 21, 2026
16	BAKKT	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	51-200	402 contacts →
	Indirect evidence “Founded in 2018, Bakkt, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
17	SJ Innovation LLC	Indirect evidence	New York, United StatesHQ checked Sep 21, 2026	51-200	341 contacts →
	Indirect evidence “Established in 2004, SJ Innovation has completed more than a decade in the software industry.” Source: RevenueBase Database · checked Sep 21, 2026
18	Subsplash	Strong evidence	Dallas, TX, United StatesHQ checked Sep 21, 2026	201-500	330 contacts →
	Strong evidence “Subsplash is an innovation leader in Fintech and mobile SaaS.” Source: RevenueBase Database · checked Sep 21, 2026
19	Nirvana Solutions	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	201-500	330 contacts →
	Indirect evidence “We are a financial technology & service provider that delivers integrated, multi-asset class workflow solutions to Asset Managers, Asset Owners, and Service Providers.” Source: RevenueBase Database · checked Sep 21, 2026
20	Foothill Technology Solutions, LLC	Partial evidence	Irvine, United StatesHQ checked Sep 21, 2026	201-500	318 contacts →
	Partial evidence “Foothill Technology Solutions is a Software development company.” Source: RevenueBase Database · checked Sep 21, 2026
21	Sails Software INC	Indirect evidence	Novi, MI, United StatesHQ checked Sep 21, 2026	501-1,000	314 contacts →
	Indirect evidence “Conceptualized in 2015, Sails Software Inc partners with businesses across several industries in making amazing software products with ever evolving technology and processes.” Source: RevenueBase Database · checked Sep 21, 2026
22	Primus Software Corporation	Indirect evidence	Duluth, GA, United StatesHQ checked Sep 21, 2026	201-500	303 contacts →
	Indirect evidence “Primus Software Corporation, a leading software services company with over 29 years of industry experience, is a trusted Business & Technology Partner for enterprises seeking to…” Source: RevenueBase Database · checked Sep 21, 2026
23	RHO	Indirect evidence	NY, United StatesHQ checked Sep 21, 2026	201-500	289 contacts →
	Indirect evidence “Rho is the modern banking platform built for startups.” Source: RevenueBase Database · checked Sep 21, 2026
24	Pharos Production	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 21, 2026	n/a	273 contacts →
	Indirect evidence “Pharos Production Inc.” Source: RevenueBase Database · checked Sep 21, 2026
25	Bitcot	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	201-500	264 contacts →
	Indirect evidence “Bitcot launched in 2014 as the vision of one man armed with a laptop.” Source: RevenueBase Database · checked Sep 21, 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: fintech SaaS development 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 fintech SaaS development companies.
Partial evidence: Its own public description names part of fintech SaaS development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fintech SaaS development 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 2,201 fintech SaaS development companies based in the United States

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Fintech SaaS development companies based in the United States at a glance

As of Sep 21, 2026

38.5%Verified-email coverage

46.3Average contacts per company

11-50Median size (employees)

8.0%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

935

11-50

818

51-200

352

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,201 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 fintech SaaS development 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 the United States whose own description of what they do matches “fintech SaaS development 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 fintech SaaS development 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 fintech SaaS development companies, 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, 39,169 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 21, 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.

Fintech SaaS development companies by metro

Fintech SaaS development companies in New York175
Fintech SaaS development companies in Austin70
Fintech SaaS development companies in Miami57
Fintech SaaS development companies in Sheridan53
Fintech SaaS development companies in San Francisco50
Fintech SaaS development companies in Atlanta46
Fintech SaaS development companies in Chicago41
Fintech SaaS development companies in Dallas37
Fintech SaaS development companies in Los Angeles35
Fintech SaaS development companies in Houston33
Fintech SaaS development companies in Boston30

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 fintech SaaS development 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 fintech SaaS development companies are there based in the United States?

RevenueBase identified 2,201 fintech SaaS development companies 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?

FIS, headquartered in Jacksonville, tops this list with the largest team on record.

Which city has the most fintech SaaS development companies?

New York leads with 175 headquartered companies, followed by Austin (70) and Miami (57).

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 39,169 verified decision-maker contacts tracked across these 2,201 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 21, 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.