| # | Company | Employees |
|---|---|---|
| 1 |
Cubic Corporationcubic.com
The company creates technology solutions in transportation to simplify daily journeys and defense capabilities to promote mission success and safety |
3,095 |
| 2 |
XiFin, Inc.xifin.com
Healthcare IT company providing innovative technologies and consulting services for improved operational efficiency, revenue cycle management, workflow automation, and industry-leading business strategies |
710 |
| 3 |
Technology Integration Grouptig.com
A trusted IT systems integrator with 40 years of experience providing top technology solutions to help clients achieve their strategic business goals |
676 |
| 4 |
E2Me2msolutions.com
White-label fulfillment services including web design, development, SEO, content, and AI automation to help digital agencies scale delivery and improve profit margins. |
508 |
| 5 |
SmartDrivefleet.solera.com
Provider of transportation SaaS solutions, specializing in safety, compliance, routing, dispatch, and more Follow for industry updates and insights |
430 |
| 6 |
EffectiveSofteffectivesoft.com
Innovative technology solutions provider offering custom software development, cloud migration, UX/UI, data analytics, and more to help companies thrive through digital transformation |
362 |
| 7 |
VetsEZvetsez.com
A digital services firm specializing in delivering modern, user-centric solutions to aid the federal government in serving the public better |
326 |
| 8 |
Symitarjackhenry.com
Provider of integrated computer systems for credit unions, offering core, digital, lending, and payments capabilities with a human-centered, tech-forward approach Serving over 700 credit unions |
278 |
| 9 |
Arey Jones Educational Solutionsareyjones.com
Leading provider of technology solutions for classrooms, specializing in minimizing disruptions, maximizing learning opportunities, and delivering exceptional service for educational institutions |
208 |
| 10 |
SoftCloudssoftclouds.com
Guiding customers digital transformation journeys, delivering innovative, creative, consultative solutions, improving customer relationships, corporate profitability, business performance. Honesty, integrity, respect, innovation, creativity focus on employees. |
205 |
| 11 |
Definitydefinityfirst.com
Global digital consulting firm solving business challenges with technology, customer experience, analytics, and marketing optimization Gold Certified Microsoft Partner Awarded 'Great Place to Work' |
177 |
| 12 |
Tactical Engineering and Analysis, Inc.tac-eng.com
A professional services company providing Systems Engineering, Analysis, and Software Support for Military Combat Communication Systems to Department of Defense agencies |
175 |
| 13 |
CliniCompclinicomp.com
Innovative architectural framework for EHR, ensuring adaptability, scalability, and real-time performance in complex hospital environments Globally trusted with unrivaled reliability |
150 |
| 14 |
TechFlow, Inc.techflow.com
A 25-year-old employee-owned organization specializing in innovative software development, performance-based logistics, and information assurance for government agencies |
148 |
| 15 |
AUSGAR Technologies Inc.ausgar.com
A tech company specializing in cybersecurity, engineering services, and experimentation, with a focus on security engineering, accreditation, and fleet technology transitions |
146 |
| 16 |
Xceptionalxceptional.com
Providing comprehensive IT solutions and services, leveraging technical expertise to empower organizations to achieve their goals efficiently and effectively |
81 |
| 17 |
Bird Rock Systemsbirdrockusa.com
Specializing in IT services including security, networking, cloud solutions, and privacy/compliance, with a focus on customer service and industry-leading technical solutions |
64 |
| 18 |
K&R Network Solutionskrns-inc.com
The company offers top IT services, including data protection, help desk support, business intelligence, and virtualization, with certified engineers and 24/7 monitoring |
52 |
| 19 |
DH Solutionsdhsol.net
A leading software house offering innovative technical solutions and consulting services for businesses, organizations, and government to efficiently access information resources securely |
51 |
| 20 |
Agile ITagileit.com
The company provides cloud managed IT services, specializing in Microsoft consulting, Office 365 migration, business automation, data integration, and intelligence solutions for businesses |
47 |
| 21 |
Itility USus-itility.com
A digital consulting company merging technology and data to drive customer success, offering expertise in data, cloud, software, and IT infrastructure |
28 |
| 22 |
eMixmerative.com
eMix provides cloud-based technology for easy sharing of medical imaging studies and reports among healthcare facilities with the simplicity of email |
22 |
| 23 |
WY Technologywytechnology.com
Provides managed IT services, strategic planning, software development, network support, and disaster recovery for businesses worldwide. |
19 |
| 24 |
Altumind Techaltumindtech.com
Altumind specializes in digital transformation by combining expertise in emerging technologies, software engineering, business domains, industry alliances, proven methodologies, and transformative solutions for enterprises |
13 |
| 25 |
Tech Hub Engineertechhubengineer.com
Global technology solutions provider focusing on building relationships, understanding customer needs, and delivering reliable digital transformation services with a simplified approach |
11 |
| 26 |
Integrated Associates Inc.integratedassociatesinc.com
A trusted IT recruiting and consulting firm with a strong focus on building relationships, integrity, and providing expert customer service |
9 |
| 27 |
Solution Galaxy Inc.solutiongalaxyinc.com
Solution Galaxy, Inc assists organizations in digital transformation by enhancing management and technology efficiencies, offering services across SDLC and providing reliable support |
5 |
| 28 |
POTS Replacementpotslinereplacement.com
The company provides comprehensive technology solutions and services that are professionally managed for optimal performance and efficiency |
3 |
| 29 |
AgosITagosit.com
This company offers customized IT and CSV solutions to simplify complexities for clients while ensuring regulatory compliance and data integrity |
3 |
| 30 |
Aliferous Technologyaliferoustechnology.com
A technology company specializing in innovative solutions and advanced technologies to meet various business needs and challenges |
3 |
| 31 | 3 | |
| 32 |
snapIoTsnapiot.com
Disruptive mClinical Platform for digital clinical trials, offering self-service solution with intuitive interface, connectors, and modules for rapid deployment |
2 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 9, 2026.
More company lists in San Diego
- The largest companies in San Diego 677
- SaaS companies in San Diego 49
- Software Development companies in San Diego 40
- Biotechnology Research companies in San Diego 34
- Financial Services companies in San Diego 29
- Hospitals and Health Care companies in San Diego 28
The same list elsewhere in United States
- IT Services and IT Consulting companies in the United States 5,236
- IT Services and IT Consulting companies in New York 304
- IT Services and IT Consulting companies in Houston 112
- IT Services and IT Consulting companies in Atlanta 100
- IT Services and IT Consulting companies in San Francisco 95
- IT Services and IT Consulting companies in Austin 91
- IT Services and IT Consulting companies in Chicago 86
- IT Services and IT Consulting companies in Dallas 76
- IT Services and IT Consulting companies in San Jose 72
- IT Services and IT Consulting companies in Miami 67
- IT Services and IT Consulting companies in Tampa 50
- IT Services and IT Consulting companies in Boston 45
- IT Services and IT Consulting companies in Santa Clara 44
- IT Services and IT Consulting companies in Charlotte 35
- IT Services and IT Consulting companies in Washington 35
- IT Services and IT Consulting companies in Seattle 32
- IT Services and IT Consulting companies in Los Angeles 28
- IT Services and IT Consulting companies in St. Louis 27