Company lists · Data refreshed September 2026

Top 25 Software engineering companies based in San Francisco, United States

Name: Software engineering companies 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 6, 2026 262 companies tracked

RevenueBase identified 262 software engineering companies headquartered in San Francisco, United States as of September 2026 and tracks 6,983 professional contacts across them, including 1,970 with verified work emails. New York is the largest hub.

This list covers software engineering companies headquartered in San Francisco, 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

262Companies

6,983Contacts tracked

1,970Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest software engineering companies based in San Francisco, United States

Ranked by team size

Top 25 of 262 software engineering companies based in San Francisco, 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 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	Devsinc	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,932 contacts →
	“We are a global organization with two state-of-the-art delivery centers in Southeast Asia and four strategically located offices across three continents.” Source: company website · checked Sep 6, 2026
2	symphony.is	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	501-1,000	672 contacts →
	“Symphony is a global design and development software company headquartered in San Francisco with 650+ technologists located across engineering offices in Southeast Europe and…” Source: company website · checked Sep 6, 2026
3	LOKA	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	201-500	336 contacts →
	“Loka is a Silicon Valley software consultancy with global impact, bringing innovations to market faster since 2004.” Source: company website · checked Sep 6, 2026
4	Cyclotron, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	201-500	210 contacts →
	“We’re Cyclotron.” Source: company website · checked Sep 6, 2026
5	Fluxon	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	201-500	200 contacts →
	“Fluxon is a San Francisco-based software development team trusted by Google, Anthropic, Stripe, and top startups with the technology work that matters most.” Source: company website · checked Sep 6, 2026
6	Kloudrac Group	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	201-500	199 contacts →
	“With globalization making rapid changes across industries and consumers becoming ever so demanding, organizations need to quickly take account of their limited resources and…” Source: company website · checked Sep 6, 2026
7	Siliconmint	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	179 contacts →
	“SiliconMint provides dedicated software teams that architect, build and support mission-critical systems.” Source: company website · checked Sep 6, 2026
8	Inverita	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	125 contacts →
	“inVerita is a top-rated AI-enabled custom software and digital transformation partner specializing in healthcare, data engineering, cloud modernization, and regulated compliance…” Source: company website · checked Sep 6, 2026
9	MINDK	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	124 contacts →
	“MindK is a software development and IT consulting company that helps businesses build software products, automate business processes, modernize technology and infrastructure.” Source: company website · checked Sep 6, 2026
10	C Ahead Digital	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	122 contacts →
	“C Ahead Technologies is an innovative brainchild of its founders created to provide IT Services, Digital Technologies, Strategic Ai Workforce, and Outsourcing in an effective…” Source: company website · checked Sep 6, 2026
11	Ensolvers	Partial evidence	San Francisco, United StatesHQ checked Sep 6, 2026	51-200	121 contacts →
	“Ensolvers specializes in software development, architecture, product development, outsourcing, testing, and building dedicated teams for end-to-end software solutions.” Source: company website · checked Sep 6, 2026
12	Blackstone Technology Group	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	201-500	116 contacts →
	“Blackstone Technology Group is a privately-held, global IT services and solutions firm founded in 1998.” Source: company website · checked Sep 6, 2026
13	ATOM	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	501-1,000	113 contacts →
	“Atom is a leading modern technology services company providing the most innovative cloud and digital transformation solutions, with carefully curated “living” services across…” Source: company website · checked Sep 6, 2026
14	Coditude	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	108 contacts →
	“Coditude stands out as a rapidly growing force in the digital realm, offering straightforward, impactful tech capabilities.” Source: company website · checked Sep 6, 2026
15	Mechlin Technologies	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	103 contacts →
	“Mechlin Technologies is a San Francisco, California (USA) based software development and technology consulting company, powered by a trusted offshore engineering team, helping…” Source: company website · checked Sep 6, 2026
16	Treinetic	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	79 contacts →
	“Treinetic™ is a leading software product engineering and technology consulting company, recognized for its innovative and award-winning solutions.” Source: company website · checked Sep 6, 2026
17	WTA	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	201-500	73 contacts →
	“We enhance customer experiences, build solutions, modernize applications and leverage technology with data Analytics to create real value.” Source: company website · checked Sep 6, 2026
18	Smart IT	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	68 contacts →
	“Smart IT is a custom software development and web development company headquartered in San Francisco.” Source: company website · checked Sep 6, 2026
19	Willware Technologies	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	66 contacts →
	“Willware Technologies, an ISO 9001 and ISO 27001 certified company headquartered in Koramangala, Bangalore, with a presence in California, USA, is a dynamic software development…” Source: company website · checked Sep 6, 2026
20	Appeon	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	54 contacts →
	“Appeon was founded in by a group of innovative Silicon Valley professionals with the mission to simplify and speed up enterprise application development.” Source: company website · checked Sep 6, 2026
21	Gbsfo Custom Software Solutions Provider	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	50 contacts →
	“GBSFO is a creative software development solutions company with a strong attitude.” Source: company website · checked Sep 6, 2026
22	Scalac	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	49 contacts →
	“For over 10 years, Scalac has been delivering high-quality software, successfully aiding FinTechs, HealthTechs, EdTechs, AdTechs and startups in their efforts to scale.” Source: company website · checked Sep 6, 2026
23	Spiceorb	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	47 contacts →
	“Formed by stalwarts in business and technology services, SpiceOrb wants to be your first choice of partner to realize your organization' strategic and tactical goals.” Source: company website · checked Sep 6, 2026
24	Syndicode	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	51-200	40 contacts →
	“Syndicode is your value-driven software development partner with a globally distributed team of 70+ engineers, designers, architects and IT managers.” Source: company website · checked Sep 6, 2026
25	Iyrix Technologies	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	11-50	39 contacts →
	“Iyrix Tech is a custom software development company having 10+ years of experience with a team of high quality engineers and well-versed specialists providing innovative solutions…” 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 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 software engineering companies.
Partial evidence: Its own public description names part of software engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software engineering 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 262 software engineering companies based in San Francisco, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,970 reachable decision-makers.

Free signup · no credit card

View the full list →

Software engineering companies based in San Francisco, United States at a glance

As of Sep 6, 2026

28.2%Verified-email coverage

26.7Average contacts per company

11-50Median size (employees)

303.4%Largest-city concentration · New York

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

114

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 San Francisco, over 262 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 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 San Francisco, United States whose own description of what they do matches “software engineering 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 software engineering 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 software engineering companies, and records with no verified work email. Companies headquartered outside San Francisco 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, 1,970 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 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 software engineering 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 software engineering companies are there based in San Francisco, United States?

RevenueBase identified 262 software engineering companies headquartered in San Francisco, 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?

Devsinc, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most software engineering companies?

New York leads with 795 headquartered companies, followed by Austin (476) and Houston (469).

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 1,970 verified decision-maker contacts tracked across these 262 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.

Ready to reach these companies? Verified emails and direct dials for all 262 software engineering companies based in San Francisco, United States. Start with a free account, no credit card.

Download this list →

Related lists

Software engineering companies by geography

Browse the directory

Browse: Companies home · Software engineering companies in United States · All United States lists · All Software engineering companies lists · New lists

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.