Company lists · Data refreshed September 2026

Top 21 Custom software engineering partners based in San Francisco, United States

Name: Custom software engineering partners based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 120 companies tracked

RevenueBase identified 120 company matches for custom software engineering partners associated with San Francisco, United States as of September 2026 and tracks 1,246 professional contacts across them, including 364 with verified work emails. Across the United States, New York is the largest hub for this category (324 companies); San Francisco has 120.

This list covers company matches for custom software engineering partners associated with San Francisco, United States, 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 24, 2026.

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 24, 2026 How this list was built

120Companies

1,246Contacts tracked

364Verified emails

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The 21 largest custom software engineering partners based in San Francisco, United States

Ranked by team size

Top 21 of 120 company matches for custom software engineering partners based in San Francisco, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 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	Fluxon	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	201-500	200 contacts →
	Exact match “Fluxon is a San Francisco-based software development team trusted by Google, Anthropic, Stripe, and top startups with the technology work that matters most.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	MINDK	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	124 contacts →
	Exact match “MindK is a software development and IT consulting company that helps businesses build software products, automate business processes, modernize technology and infrastructure.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	Ensolvers	Exact match	San Francisco, United StatesHQ recorded Sep 24, 2026	51-200	121 contacts →
	Exact match “Ensolvers specializes in software development, architecture, product development, outsourcing, testing, and building dedicated teams for end-to-end software solutions.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	Smart IT	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	68 contacts →
	Exact match “Smart IT is a custom software development and web development company headquartered in San Francisco.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	Coding Crafts	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	51 contacts →
	Exact match “CodingCrafts is a founder led software engineering company helping agencies, startups, and SaaS businesses scale their product development with reliable, high quality engineering…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	Gbsfo Custom Software Solutions Provider	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	50 contacts →
	Exact match “GBSFO is a creative software development solutions company with a strong attitude.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	Scalac	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	49 contacts →
	Exact match “For over 10 years, Scalac has been delivering high-quality software, successfully aiding FinTechs, HealthTechs, EdTechs, AdTechs and startups in their efforts to scale.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
8	Goteso	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	33 contacts →
	Exact match “Goteso is a product and service based software development firm.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
9	Roundtechsquare	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	29 contacts →
	Exact match “At RoundTechSquare, we believe that every business deserves digital solutions that inspire growth and innovation.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
10	Quimbik, INC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	23 contacts →
	Exact match “Quimbik is a software engineering company focused on web applications (solutions).” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
11	Appstem	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	20 contacts →
	Exact match “Appstem designs and develops custom software to help our clients solve complex business problems.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
12	Cidersoft	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	16 contacts →
	Exact match “Cidersoft is a San Francisco based software development company that offers full-service software design and development.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
13	LAB Zero Innovations INC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	15 contacts →
	Exact match “Lab Zero designs and develops custom software and products that move your business forward.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	Novalab Tech	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	51-200	12 contacts →
	Exact match “NovaLab Tech is a software development company with over 10 years of proven industry experience.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
15	Baruni Solutions	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	201-500	10 contacts →
	Exact match “Baruni Solutions is a custom software development company based in Jabalpur, MP, India with proven expertise in Microsoft technologies, Web application development, Mobile…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	Robot SEA Monster	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	10 contacts →
	Exact match “Robot Sea Monster is custom software development studio that leverages bespoke solutions to deliver on digital ambitions.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	IM Republic	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	11-50	9 contacts →
	Exact match “IM Republic, founded in 2005, is a custom software development company with offices in San Francisco, CA, and Belgrade, Serbia.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
18	Prophet Town	Exact match	San Francisco, United StatesHQ recorded Sep 24, 2026	11-50	8 contacts →
	Exact match “Prophet Town is a unique IT engineering and technology partner you can trust.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
19	Dominus	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	1-10	3 contacts →
	Exact match “Dominus serves as your premier strategic technology partner, delivering comprehensive end-to-end digital solutions.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	Dentsu Innovation Studio INC	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	1-10	2 contacts →
	Exact match “DIS's mission is to equip business ventures with the latest technologies, to develop products, services, and experiences that create sustainable, profitable growth for our clients.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
21	Number ZOO	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	1-10	2 contacts →
	Exact match “Number Zoo builds custom software that fits the way your organization actually works, not the other way around.” Recorded in the RevenueBase company graph · Sep 24, 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 “custom software engineering partners”. 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 21 of 120 custom software engineering partners based in San Francisco, United States

See the full list, filter by size, metro and specialty, and access 364 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Custom software engineering partners based in San Francisco, United States at a glance

As of Sep 24, 2026

29.2%Verified-email coverage

10.4Average contacts per company

1-10Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 120 companies.

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.
What qualifies: Company records associated with San Francisco, United States whose business descriptions match “custom software engineering partners” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 364 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 24, 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.

Custom software engineering partners by metro in the United States

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 “custom software engineering partners”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many custom software engineering partners are there based in San Francisco, United States?

RevenueBase identified 120 company matches for custom software engineering partners associated with San Francisco, United States 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?

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

Which city in the United States has the most custom software engineering partners?

New York leads the United States with 324 company records, followed by Austin (221) and Houston (159). San Francisco has 120.

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 364 professional contacts with verified work emails tracked across these 120 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 24, 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.