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Company lists · Data refreshed September 2026

Top 25 Custom software engineering companies based in San Diego, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 91 companies tracked

RevenueBase identified 91 custom software engineering companies headquartered in San Diego, United States as of September 2026 and tracks 1,742 professional contacts across them, including 385 with verified work emails. New York is the largest hub.

This list covers custom software engineering companies headquartered in San Diego, 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 24, 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 24, 2026 86% judged on-target in blind review
91Companies
1,742Contacts tracked
385Verified emails
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The 25 largest custom software engineering companies based in San Diego, United States

Ranked by team size
Top 25 of 91 custom software engineering companies based in San Diego, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to custom 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1
Integrant, INC
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 2026201-500280 contacts →

Partial evidence

“For more than 35 years, Integrant has engineered enterprise software for companies that can’t afford to get it wrong, in medical devices, life sciences, pharma, financial…”

Source: RevenueBase Database · checked Sep 24, 2026
2
Bitcot
Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 24, 2026201-500264 contacts →

Indirect evidence

“Bitcot launched in 2014 as the vision of one man armed with a laptop.”

Source: RevenueBase Database · checked Sep 24, 2026
3
Sysintelli Software And Services Private Limited
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202651-20081 contacts →

Partial evidence

“Sysintelli, founded in early 2005, as a software development and consulting firm, has now evolved to providing whole array of services and solutions in Application Development…”

Source: RevenueBase Database · checked Sep 24, 2026
4
Primero Systems
Strong evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202651-20059 contacts →

Strong evidence

“Primero Systems is a custom software development company focused on building and supporting enterprise applications for complex business environments.”

Source: RevenueBase Database · checked Sep 24, 2026
5
Jeannypr Softech Pvt. LTD
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-5036 contacts →

Partial evidence

“Jeannypr Softech is an IT product and services company and offers a full range of web, mobile & software development solutions.”

Source: RevenueBase Database · checked Sep 24, 2026
6
Royanis
Partial evidenceSan Diego, United StatesHQ checked Sep 24, 202611-5032 contacts →

Partial evidence

“Royanis is a company that specializes in solving software and data related challenges, turning ideas into web, cloud or mobile based digital software products that can scale to…”

Source: RevenueBase Database · checked Sep 24, 2026
7
Tateeda Global
Strong evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202651-20031 contacts →

Strong evidence

“TATEEDA GLOBAL, a custom software development company and staff augmentation provider, boasts a talent pool of over 100 experienced engineers.”

Source: RevenueBase Database · checked Sep 24, 2026
8
I2a Solutions INC
Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-5025 contacts →

Indirect evidence

“At i2a Solutions, we transform our client’s ideas into innovative applications and solutions that deliver a high business impact.”

Source: RevenueBase Database · checked Sep 24, 2026
9
Natural Networks, INC
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-5024 contacts →

Partial evidence

“Natural Networks specializes in combining sound business strategies with cutting edge technologies to provide effective and comprehensive enterprise solutions for our customers.”

Source: RevenueBase Database · checked Sep 24, 2026
10
Swazei
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-5020 contacts →

Partial evidence

“Software Design and Development Platform with a passion to create intuitive products.”

Source: RevenueBase Database · checked Sep 24, 2026
11
Fusion Media Solutions, INC
Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-5016 contacts →

Indirect evidence

“We specialize in the creation of sophisticated and engaging web and mobile solutions for innovative clients around the world.”

Source: RevenueBase Database · checked Sep 24, 2026
12
Digital Crafters
Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202651-20015 contacts →

Indirect evidence

“Digital Crafters is a web design and development company and we believe in providing high-quality value-added IT solutions to our clients.”

Source: RevenueBase Database · checked Sep 24, 2026
13
Sunrise Apps
Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202651-20015 contacts →

Indirect evidence

“Sunrise Apps is a US-registered mobile & web development company.”

Source: RevenueBase Database · checked Sep 24, 2026
14
Ifline Technologies
Partial evidenceSan Diego, United StatesHQ checked Sep 24, 202611-5014 contacts →

Partial evidence

“IFLINE Software will assist your company in constituting new opportunities for enhancement by greatly diminishing the costs attributed in managing web and software applications.”

Source: RevenueBase Database · checked Sep 24, 2026
15
SD Sharp
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-5013 contacts →

Partial evidence

“SD Sharp is a boutique Software Development agency with one of the best Dev Teams in California.”

Source: RevenueBase Database · checked Sep 24, 2026
16
ESR Tech
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-5012 contacts →

Partial evidence

“We build software and applications, as well as provide consultation to small and medium-sized businesses on process automation, data science, data security and other aspects of…”

Source: RevenueBase Database · checked Sep 24, 2026
17
Barefoot Solutions
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-5011 contacts →

Partial evidence

“Based in San Diego, Barefoot Solutions is an innovative custom web and mobile application development company.”

Source: RevenueBase Database · checked Sep 24, 2026
18
Odyssey Computing, INC
Strong evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-507 contacts →

Strong evidence

“Odyssey Computing is a privately held custom software and mobile app development company based in San Diego.”

Source: RevenueBase Database · checked Sep 24, 2026
19
Vega Marketing Group
Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 24, 20261-106 contacts →

Indirect evidence

“We are passionate about helping local businesses succeed.”

Source: RevenueBase Database · checked Sep 24, 2026
20
Keysoft Systems, INC
Strong evidenceSan Diego, CA, United StatesHQ checked Sep 24, 20261-105 contacts →

Strong evidence

“We provide advanced systems engineering design support and develop custom computer software applications to meet the customers unique requirements for large database systems.”

Source: RevenueBase Database · checked Sep 24, 2026
21
Plum Networks
Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-505 contacts →

Indirect evidence

“Plum Networks is a mobile/web application & platform development, website design, and digital marketing firm based in San Diego, California.”

Source: RevenueBase Database · checked Sep 24, 2026
22
Bluekite Apps
Strong evidenceSan Diego, CA, United StatesHQ checked Sep 24, 20261-104 contacts →

Strong evidence

“Mobile App Development Custom Software Development Web App Development Company Overview: We design and develop best-in-class web and mobile applications for clients from growing…”

Source: RevenueBase Database · checked Sep 24, 2026
23
RE Point Software INC
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-504 contacts →

Partial evidence

“We help our clients solve business issues using digital channels – web, mobile devices (Software) and interactive installations in real world (Hardware).”

Source: RevenueBase Database · checked Sep 24, 2026
24
Cosmos Board IT Services
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 202611-503 contacts →

Partial evidence

“With Best Software Development Skills We Create Solutions For You 01.”

Source: RevenueBase Database · checked Sep 24, 2026
25
Sqware Logics
Partial evidenceSan Diego, CA, United StatesHQ checked Sep 24, 20261-102 contacts →

Partial evidence

“Sqware Logics is a software development and consulting company founded by a small group of engineers with decades of experience creating unique solutions to complex technical…”

Source: RevenueBase Database · checked Sep 24, 2026

Showing 25 of 91 custom software engineering companies based in San Diego, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 385 reachable decision-makers.

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Custom software engineering companies based in San Diego, United States at a glance

As of Sep 24, 2026
22.1%Verified-email coverage
19.1Average contacts per company
1-10Median size (employees)
444.0%Largest-city concentration · New York
Sep 24, 2026Page data refreshed

Companies by employee count

1-10
47
11-50
31
51-200
10
201-500
3

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 91 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 custom 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 Diego, United States whose own description of what they do matches “custom 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 custom 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 custom software engineering companies, and records with no verified work email. Companies headquartered outside San Diego 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, 385 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 24, 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.

Custom 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 custom 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 custom software engineering companies are there based in San Diego, United States?

RevenueBase identified 91 custom software engineering companies headquartered in San Diego, 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?

Integrant, INC, headquartered in San Diego, tops this list with the largest team on record.

Which city has the most custom software engineering companies?

New York leads with 404 headquartered companies, followed by Austin (268) and Houston (188).

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 385 verified decision-maker contacts tracked across these 91 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 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 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.

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