Company lists · Data refreshed September 2026

Top 9 Offshore software development firms based in San Francisco, United States

RevenueBase identified 30 offshore software development firms headquartered in San Francisco, United States as of September 2026 and tracks 3,556 professional contacts across them, including 1,105 with verified work emails. Across the United States, New York is the largest hub for this category (54 companies); San Francisco has 30.

This list covers offshore software development firms 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 29, 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 29, 2026 86% judged on-target in blind review
30Companies
3,556Contacts tracked
1,105Verified emails
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The 9 largest offshore software development firms based in San Francisco, United States

Ranked by team size
Top 9 of 30 offshore software development firms based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to offshore software development 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 20261,001-5,0003,186 contacts →

Partial evidence

“BairesDev is your expert partner that works alongside clients to build high-quality software solutions with speed and precision.”

Source: RevenueBase Database · checked Sep 29, 2026
2Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 202651-200103 contacts →

Strong evidence

“Mechlin Technologies is a San Francisco, California (USA) based software development and technology consulting company, powered by a trusted offshore engineering team, helping…”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 202651-20049 contacts →

Partial evidence

“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: RevenueBase Database · checked Sep 29, 2026
4Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 202611-5030 contacts →

Strong evidence

“Admios is an accomplished nearshore software development firm that provides highly skilled, team-based resources to companies with strategic software needs.”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 2026201-50022 contacts →

Partial evidence

“We are the fastest-growing Nearshore Software Outsourcing company in the Americas.”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 2026501-1,00014 contacts →

Indirect evidence

“ALLSTARSIT is an international outstaffing service provider that helps businesses recruit, pay, insure, and support top global talent with payroll, benefits, and more.”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceSan Francisco, United StatesHQ checked Sep 29, 20261-108 contacts →

Partial evidence

“Get world-class offshore talent, with an acceptance rate of less than 1%, for everyday help with design, data entry, ads testing, copywriting, project managing, and more.”

Source: RevenueBase Database · checked Sep 29, 2026
8Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 202651-2006 contacts →

Strong evidence

“Prolev Technologies LLC is a Bay Area-based software development outsourcing company with a focus on building and maintaining strong software engineering teams for unique needs of…”

Source: RevenueBase Database · checked Sep 29, 2026
9Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 202651-2001 contacts →

Strong evidence

“We are a leading provider of offshore software development solutions with US-based technical and program management.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 9 of 30 offshore software development firms based in San Francisco, United States

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Offshore software development firms based in San Francisco, United States at a glance

As of Sep 29, 2026
31.1%Verified-email coverage
118.5Average contacts per company
11-50Median size (employees)
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
7
11-50
9
51-200
11
201-500
1
501-1,000
1
1,001-5,000
1

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 30 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 offshore software development 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 San Francisco, United States whose own description of what they do matches “offshore software development 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 offshore software development 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 offshore software development firms, 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, 1,105 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 29, 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 offshore software development 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 offshore software development firms are there based in San Francisco, United States?

RevenueBase identified 30 offshore software development firms 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?

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

Which city in the United States has the most offshore software development firms?

New York leads the United States with 54 headquartered companies, followed by Austin (36) and Miami (31). San Francisco has 30.

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 1,105 verified decision-maker contacts tracked across these 30 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 29, 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.