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Security Engineer · San Francisco

Security Engineer Jobs in San Francisco

There are currently 123 open Security Engineer jobs in San Francisco & Bay Area across 69 AI startups. 25% of these roles are at Series A–B startups. Every listing links straight to the company's official application page.

123Open roles
69Companies hiring
Sep 11, 2026Last updated
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Funding-stage mix

Series G+ 24 (20%)Series C 22 (18%)Series D 20 (16%)Series A 18 (15%)Series B 13 (11%)Series E 9 (7%)Series F 4 (3%)Debt 4 (3%)Growth 4 (3%)Seed 3 (2%)Private Equity 2 (2%)
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Open Security Engineer Roles in San Francisco

RoleCompanyStageLocationPosted
Senior/Staff Security EngineerPomelo CareSeries CMultiple locationsSep 11, 2026
Security Engineer, Offensive SecurityAnthropicSeries G+Multiple locationsSep 10, 2026
Security Engineer, Threat IntelligenceFluidStackSeries AMultiple locationsSep 9, 2026
Security EngineerMergeSeries BMultiple locationsSep 9, 2026
Security Engineer, Corporate SecurityFlexportSeries EMultiple locationsSep 9, 2026
Senior Security Engineer, Detection & ResponseFlexportSeries EMultiple locationsSep 9, 2026
Principal Offensive Security EngineerPostmanSeries DMultiple locationsSep 9, 2026
Lead Security Engineer8090 FactorySeries ARedwood CitySep 5, 2026
Security Engineer, Application SecurityMercorSeries CMultiple locationsSep 4, 2026
Security engineer, detection and responseWriterSeries CMultiple locationsSep 4, 2026
Security engineer, application securityWriterSeries CMultiple locationsSep 4, 2026
Senior Security EngineerCohereSeries DMultiple locationsSep 3, 2026
Cloud Security EngineerHexSeries CMultiple locationsSep 3, 2026
Application Security EngineerRetoolSeries CSan Francisco, United StatesSep 2, 2026
Security Engineer, Product SecurityScale AISeries G+Multiple locationsSep 2, 2026
Chief Information Security Officer (CISO)CohereSeries DMultiple locationsSep 1, 2026
Security Engineer - Threat IntelAnthropicSeries G+Multiple locationsSep 1, 2026
Senior Cloud Security Engineer - InfoSecMercurySeries DMultiple locationsSep 1, 2026
Security EngineerGreptileSeries ASan FranciscoAug 29, 2026
Security Engineer, Detection & ResponseAssort HealthSeries CSan FranciscoAug 27, 2026
Senior Security EngineerSigma ComputingSeries EMultiple locationsAug 27, 2026
Senior Security Engineer - Data SecuritySigma ComputingSeries EMultiple locationsAug 27, 2026
Security Engineer, Application SecuritySentrySeries ESan Francisco, CaliforniaAug 26, 2026
Security Engineer, Detection & ResponseSentrySeries ESan Francisco, CaliforniaAug 26, 2026
Senior Embedded Security Engineer, Flight SoftwareTrue AnomalySeries DMultiple locationsAug 26, 2026
Product Security EngineerVercelSeries FMultiple locationsAug 26, 2026
Platform Security Engineer, DRTM / Secure LaunchAnthropicSeries G+Multiple locationsAug 25, 2026
Corporate IT and Security EngineerRowspaceSeries ASan FranciscoAug 24, 2026
Offensive Hardware Security Engineer, Platform SecurityAnthropicSeries G+Multiple locationsAug 21, 2026
Platform Security Engineering, Operating SystemsAnthropicSeries G+Multiple locationsAug 21, 2026
Platform Security Engineer, OpenBMCAnthropicSeries G+Multiple locationsAug 21, 2026
Security Engineer, Corporate SecurityAnthropicSeries G+Multiple locationsAug 21, 2026
Security Engineer, Detection & ResponseAnthropicSeries G+Multiple locationsAug 21, 2026
Senior Software Security EngineerAnthropicSeries G+Multiple locationsAug 21, 2026
Software Security Engineering Manager, Secure FrameworksAnthropicSeries G+Multiple locationsAug 21, 2026
Staff+ Application Security EngineerAnthropicSeries G+Multiple locationsAug 21, 2026
Staff+ Application Security Engineer - M&AAnthropicSeries G+Multiple locationsAug 21, 2026
Staff+ Security Engineer, Risk EngineeringAnthropicSeries G+Multiple locationsAug 21, 2026
Staff+ Software Security EngineerAnthropicSeries G+Multiple locationsAug 21, 2026
Senior Product Security EngineerHarveySeries G+Multiple locationsAug 21, 2026
Staff Product Security EngineerHarveySeries G+Multiple locationsAug 21, 2026
Security EngineerTownSeries AMultiple locationsAug 19, 2026
Staff/Lead Application Security EngineerBeacon SoftwareSeries CMultiple locationsAug 18, 2026
Security Engineer, Detection ResponseVercelSeries FMultiple locationsAug 18, 2026
Security Engineer - Detection & ResponseLangChainSeries BMultiple locationsAug 17, 2026
Staff Security Engineer, CloudALSO.Series DPalo AltoAug 14, 2026
Browser Security EngineerKernelSeries AMultiple locationsAug 13, 2026
Senior Security EngineerMixpanelSeries CMultiple locationsAug 12, 2026
Enterprise Security EngineerPaveSeries CMultiple locationsAug 12, 2026
Member of Technical Staff, Security EngineerMagicSeries CSan FranciscoAug 7, 2026
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FAQ

How many Security Engineer jobs are open in San Francisco?

There are currently 123 open Security Engineer jobs in San Francisco across 69 AI startups on Fast AI Jobs.

What funding stages are hiring Security Engineers in San Francisco?

25% of open Security Engineer roles in San Francisco are at Series A–B startups, with the rest spread across seed and later-stage companies.

How often is this list updated?

Listings are refreshed daily from official company career pages and deduplicated by posting. Every link points to the original application page.