Illumina
Torrey Pines / UTC · Genomics and sequencing
One of the world's largest genomics companies, headquartered in San Diego. It is a major employer of scientists, engineers, regulatory specialists, and manufacturing talent.
Top Employers in San Diego
Biotech, defense, healthcare, tourism, tech, and the military presence that drives the region's economy and hiring.
Last updated
Quick answer
San Diego's economy is anchored by three pillars: the military and defense industrial complex, life sciences and biotechnology, and tourism and hospitality. The largest single employers include Naval Base San Diego, the Naval Medical Center, and the Marine Corps Air Station Miramar, which together account for tens of thousands of military and civilian jobs. On the private side, Qualcomm remains the most recognizable technology employer, while biotech and pharmaceutical companies like Illumina, Dexcom, Pfizer, and Thermo Fisher have major operations, especially in the Torrey Pines and Sorrento Valley corridor. The healthcare sector is led by Scripps Health, Sharp HealthCare, Kaiser Permanente, and UC San Diego Health. Tourism and conventions support thousands of jobs at hotels, restaurants, attractions, and the San Diego International Airport. The region also has a growing cluster of remote-tech, climate, and sports-tech companies. Median household income in San Diego County is among the highest in the country, but so is the cost of living, so salary expectations are higher than the national average.
Major San Diego employers by sector
| Sector | Key employers | Why it matters here |
|---|---|---|
| Defense / Military | Naval Base San Diego, MCAS Miramar, SPAWAR, NASSCO | Largest economic engine; security clearance jobs pay well |
| Biotech / Life Sciences | Illumina, Dexcom, Pfizer, Thermo Fisher, Regeneron | Torrey Pines corridor is one of the world's top clusters |
| Technology | Qualcomm, Intuit, Amazon, Apple, startups | 5G, semiconductors, and software engineering hiring |
| Healthcare | Scripps, Sharp, Kaiser, UC San Diego Health | Nursing, allied health, and physician demand stays high |
| Tourism / Hospitality | Hotels, SeaWorld, Zoo, restaurants, cruise port | Seasonal strength; service and management jobs |
| Education / Research | UC San Diego, SDSU, community colleges | Research, teaching, and administrative roles |
Biotech and life sciences corridor
San Diego is one of the top three life-science clusters in the United States, alongside Boston and San Francisco. The Torrey Pines and Sorrento Valley area is the epicenter.
Dexcom
Sorrento Valley / San Diego · Continuous glucose monitors
A rapidly growing medical device company with a large San Diego presence. Hiring heavily in engineering, operations, quality, and software.
Pfizer and Thermo Fisher
San Diego County · Pharma and life-science tools
Both operate significant San Diego facilities. They offer stable, large-company employment across research, manufacturing, and commercial roles.
Regeneron and other emerging biotechs
Torrey Pines area · Research and development
San Diego's biotech ecosystem includes hundreds of smaller startups and midsize companies, many clustered near research institutions and venture firms.
UC San Diego and Salk Institute
La Jolla · Research and talent pipeline
These institutions generate research, spinouts, and a steady stream of trained scientists and engineers that feed the local biotech workforce.
Defense, military, and aerospace
The military is San Diego's single largest economic driver. It also creates a massive ecosystem of defense contractors, shipyards, and service providers.
Naval Base San Diego
Harbor / Point Loma · Largest U.S. Navy base on the West Coast
The home port for much of the Pacific Fleet, supporting tens of thousands of active-duty personnel plus civilian contractors, maintenance, and logistics jobs.
Marine Corps Air Station Miramar
Miramar · Aviation and logistics
A major Marine Corps installation supporting aviation, logistics, and training. It also hosts the annual Miramar Air Show.
NASSCO (General Dynamics)
Barrio Logan / San Diego Bay · Shipbuilding and repair
One of the few major shipyards on the West Coast, building and repairing Navy and commercial ships. A stable employer of engineers, tradespeople, and project managers.
SPAWAR / Naval Information Warfare Center
San Diego · Cyber and systems engineering
A major center for naval information technology, cybersecurity, and systems engineering. Many roles require security clearances.
Defense contractors
San Diego County · Booz Allen, SAIC, Northrop, Lockheed, Raytheon
A dense ecosystem of defense contractors operates in San Diego, drawn by the Navy and Marine presence. Clearance jobs often command a salary premium.
Healthcare, tech, and tourism
These sectors absorb the largest share of non-defense civilian employment and offer the most accessible entry points for newcomers.
Scripps Health
San Diego County · Hospital and clinic system
A nonprofit health system with multiple hospitals and clinics. Strong employer of nurses, technicians, therapists, and administrators.
Sharp HealthCare
San Diego County · Hospital and medical group
One of the largest integrated health systems in the region, with facilities across central and South Bay communities.
Qualcomm
Sorrento Valley · Semiconductors and wireless
San Diego's most famous technology company, foundational to the city's reputation in wireless and chip design. Still a major employer of engineers.
Tourism and hospitality employers
Citywide and coastal · Hotels, attractions, restaurants, events
The San Diego Zoo, Safari Park, SeaWorld, Legoland, major hotels, and the Convention Center collectively support a huge service and management workforce.
UC San Diego and San Diego State University
La Jolla / San Diego · Higher education and research
Major employers in education, research, administration, and campus services. UC San Diego is one of the top research universities in the world by R&D spending.
Hiring trends in 2026
- • Biotech and medical device hiring remains strong despite broader tech layoffs, especially in roles that require on-site lab or manufacturing work.
- • Defense spending continues to support engineering, cybersecurity, and cleared trades positions with salary premiums for active clearances.
- • Healthcare faces persistent shortages of nurses, respiratory therapists, medical assistants, and mental health providers.
- • Tourism and hospitality have recovered but remain sensitive to seasonal demand and convention calendars.
- • Remote work has normalized, so many San Diego tech workers now hold jobs with Bay Area, Seattle, or New York companies while living locally.
Frequently asked
Who is the largest employer in San Diego?
The federal government, primarily the Navy and Marine Corps, is the largest employer. Among private companies, the biggest include Qualcomm, Scripps Health, Sharp HealthCare, and UC San Diego.
What is the main industry in San Diego?
San Diego's economy is dominated by defense/military, biotechnology and life sciences, healthcare, tourism, and technology.
Is San Diego a good place for tech jobs?
Yes, especially in wireless, semiconductors, biotech-adjacent tech, defense tech, and remote roles with national companies. Local software salaries are high but below the Bay Area.
How much do biotech jobs pay in San Diego?
Salaries vary widely by role. Research associates often start around $60,000-$80,000, scientists can earn $100,000-$150,000+, and senior roles or those with clearance often exceed $200,000.
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