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Series C · Security Engineer

Series C AI Startup Security Engineer Jobs

There are currently 60 open Security Engineer jobs across 42 Series C AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

60Open roles
42Companies hiring
Oct 31, 2026Last updated
01

Open Security Engineer Roles at Series C AI Startups

RoleCompanyStageLocationPosted
Trust & Safety EngineerLovableSeries CStockholmOct 31, 2026
Systems Security EngineerBlacksmithSeries CNew York CityOct 30, 2026
Chief Information Security Officer (CISO)CapeSeries CMultiple locationsOct 30, 2026
Field CISOHalcyonSeries CMultiple locationsOct 30, 2026
Staff AppSec / Product Security EngineerFiligranSeries CFranceOct 29, 2026
Security Engineer, Application SecurityFigure AISeries CMultiple locationsOct 28, 2026
Security Engineer, Detection and ResponseFigure AISeries CMultiple locationsOct 28, 2026
Security Engineer, Enterprise SecurityFigure AISeries CMultiple locationsOct 28, 2026
Security Engineer, Infrastructure SecurityFigure AISeries CMultiple locationsOct 28, 2026
Security Engineer, Product and Device SecurityFigure AISeries CMultiple locationsOct 28, 2026
Cyber Security EngineerNerosSeries CMultiple locationsOct 27, 2026
Senior Network Security EngineerMuon SpaceSeries CMultiple locationsOct 25, 2026
Senior Security EngineerMuon SpaceSeries CRemoteOct 25, 2026
Lead Security EngineerPhysical IntelligenceSeries CSan FranciscoOct 23, 2026
Application Security Engineer - SeniorBanco PlataSeries CWorldwideOct 22, 2026
Security Engineer, Infrastructure SecurityLiveKitSeries CMultiple locationsOct 22, 2026
Security Engineer, Vulnerability ManagementLiveKitSeries CMultiple locationsOct 22, 2026
Senior Security EngineerFinixSeries CSan FranciscoOct 22, 2026
Staff Application Security EngineerFingerprintSeries CRemoteOct 16, 2026
Hardware Security Engineer Intern (Summer 2027)Together AISeries CSan FranciscoOct 16, 2026
Hardware Security Engineer, New Grad (2027)Together AISeries CSan FranciscoOct 16, 2026
Senior / Staff Security EngineerLinearSeries CNorth AmericaOct 15, 2026
Senior Application Security EngineerNablaSeries CMultiple locationsOct 14, 2026
Senior Software Security EngineerFieldGuideSeries CMultiple locationsOct 13, 2026
Sr Security Engineer | Remote | Europen8nSeries CMultiple locationsOct 13, 2026
Product Security EngineerRetoolSeries CSan Francisco, United StatesOct 7, 2026
Security Engineer - AppSecRainSeries CRemoteOct 5, 2026
Staff Application Security EngineerEngineSeries CUS RemoteOct 4, 2026
Lead Security EngineerEncordSeries CLondonOct 2, 2026
Senior Security EngineerRangeSeries CMcLean, VAOct 2, 2026
Senior Application Security EngineerTurquoise HealthSeries CRemoteOct 2, 2026
Security EngineerDeepgramSeries CUSA - RemoteOct 1, 2026
Product Security Engineer, SeniorTRM LabsSeries CUnited StatesOct 1, 2026
Chief Information Security OfficerSlashSeries CSan Francisco OfficeSep 29, 2026
Staff security engineer, application securityWriterSeries CMultiple locationsSep 24, 2026
Product Security EngineerWorkOSSeries CUnited States & CanadaSep 23, 2026
Security engineer, detection and responseWriterSeries CMultiple locationsSep 22, 2026
Security engineer, application security (UK)WriterSeries CLondon, UKSep 22, 2026
Security engineer, detection and response (UK)WriterSeries CLondon, UKSep 22, 2026
Staff Product Security Engineer (Security)PhantomSeries CRemoteSep 21, 2026
Staff Product Security EngineerAmbience HealthcareSeries CSan FranciscoSep 18, 2026
Security Engineer, CorporateLovableSeries CStockholmSep 18, 2026
MTS, Technology & Security EngineeringReflection AISeries CMultiple locationsSep 18, 2026
Staff Platform Security Engineer (Security)PhantomSeries CRemoteSep 16, 2026
Security Engineering ManagerStediSeries CMultiple locationsSep 16, 2026
Security Engineer – DevSecOps and Security ArchitectPhysicsXSeries CMultiple locationsSep 10, 2026
Security Engineer III - Detection & ResponsePrimerSeries CMultiple locationsSep 7, 2026
Senior Platform Security Engineer, UASMach IndustriesSeries CMultiple locationsSep 2, 2026
Security Engineer, Detection & ResponseAssort HealthSeries CSan FranciscoAug 27, 2026
Information Security Engineer LeadNeko HealthSeries CMultiple locationsAug 19, 2026
View all Security Engineer jobs
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FAQ

How many Security Engineer jobs are open at Series C AI startups?

There are currently 60 open Security Engineer jobs across 42 Series C AI startups on Fast AI Jobs.

Why filter Security Engineer jobs by funding stage?

Funding stage signals company size, runway, and equity upside. Filtering to Series C startups narrows the list to Security Engineer roles at companies at a comparable point in their growth.

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.