Series D+ · Security Engineer
Series D+ AI Startup Security Engineer Jobs
There are currently 85 open Security Engineer jobs across 42 Series D+ AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.
85Open roles
42Companies hiring
Jun 16, 2026Last updated
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Open Security Engineer Roles at Series D+ AI Startups
| Role | Company | Stage | Location | Posted |
|---|---|---|---|---|
| Security Engineer | Cognition AI | Series D | San Francisco | Jun 16, 2026 |
| Staff Cloud Security Engineer | Addepar | Series G+ | Poland | Jun 16, 2026 |
| Staff Software Security Engineer | Anduril | Series G+ | Washington, DC (999) | Jun 15, 2026 |
| Staff Software Security Engineer | Anduril | Series G+ | Seattle, Washington, United States | Jun 15, 2026 |
| Staff Software Security Engineer | Anduril | Series G+ | Washington, District of Columbia, United States | Jun 15, 2026 |
| Staff Software Security Engineer | Anduril | Series G+ | Costa Mesa, California, United States | Jun 15, 2026 |
| Senior Product Security Engineer | Databricks | Series G+ | United States | Jun 15, 2026 |
| Senior Security Engineer, Incident Response | Databricks | Series G+ | Amsterdam, Netherlands | Jun 15, 2026 |
| Sr. Enterprise Security Engineer | Databricks | Series G+ | Remote (California) | Jun 15, 2026 |
| Staff Product Security Engineer | Databricks | Series G+ | United States | Jun 15, 2026 |
| Security Engineer | Lambda | Series E | San Francisco Office (Fremont St) | Jun 15, 2026 |
| Security Engineer - IAM | Netradyne | Series D | Bengaluru | Jun 15, 2026 |
| Manager, Enterprise Security Engineering | Anduril | Series G+ | Seattle, WA | Jun 12, 2026 |
| Manager, Enterprise Security Engineering | Anduril | Series G+ | Washington, District of Columbia, United States | Jun 12, 2026 |
| Manager, Enterprise Security Engineering | Anduril | Series G+ | Seattle, Washington, United States | Jun 12, 2026 |
| Manager, Enterprise Security Engineering | Anduril | Series G+ | Costa Mesa, California, United States | Jun 12, 2026 |
| Senior/Staff Security Engineer, Threat Intelligence | Anthropic | Series G+ | Zürich, CH | Jun 11, 2026 |
| WebApp Offensive Security Engineer | Horizon3AI | Series D | US Remote | Jun 11, 2026 |
| Staff Application Security Engineer | Abridge | Series E | SF Office | Jun 10, 2026 |
| Staff+ Security Engineer, Risk Engineering | Anthropic | Series G+ | San Francisco, CA | Jun 10, 2026 |
| Security Engineer [IC3] | Sourcegraph | Series D | Remote | Jun 10, 2026 |
| Staff Security Engineer, PSIRT | Flock Safety | Series G+ | US Remote | Jun 9, 2026 |
| Application Security Engineering Manager | Synthesia | Series E | Europe | Jun 9, 2026 |
| Director Of Security Engineering | Parloa | Series D | Berlin Office | Jun 9, 2026 |
| Senior Linux Security Engineer | True Anomaly | Series D | Denver, CO or Long Beach, CA or SF Bay Area | Jun 9, 2026 |
| Principal Offensive Security Engineer | Postman | Series D | San Francisco, California, United States | Jun 8, 2026 |
| Senior Application Security Engineer | Zip | Series D | San Francisco | Jun 8, 2026 |
| Senior Application Security Engineer | AlphaSense | Series G+ | US Remote | Jun 5, 2026 |
| Staff Product Security Engineer | AlphaSense | Series G+ | US Remote | Jun 5, 2026 |
| Senior Enterprise Security Engineer | Abridge | Series E | SF Office | Jun 3, 2026 |
| Senior Security Engineer | Federato | Series D | Remote | Jun 3, 2026 |
| Senior Application Security Engineer | Temporal | Series D | United States - Remote Opportunity | Jun 3, 2026 |
| Staff Cloud Security Engineer | Temporal | Series D | United States - Remote Opportunity | Jun 3, 2026 |
| Mission Security Engineer | True Anomaly | Series D | Denver, CO or Long Beach, CA | Jun 1, 2026 |
| Security Engineer, Corporate Security | Persona | Series D | San Francisco | May 29, 2026 |
| Security Engineer, Enterprise | Persona | Series D | San Francisco | May 29, 2026 |
| Security Engineer, IAM | Sentry | Series E | Vienna, Austria | May 29, 2026 |
| Security Engineer, IAM | Sentry | Series E | Toronto, Ontario, Canada | May 29, 2026 |
| Security Engineer, IAM | Sentry | Series E | San Francisco, California | May 29, 2026 |
| Senior Application Security Engineer | True Anomaly | Series D | Denver, CO or Long Beach, CA or SF Bay Area, CA | May 28, 2026 |
| Senior Cloud Security Engineer | True Anomaly | Series D | Denver, CO or Long Beach, CA or SF Bay Area, CA | May 28, 2026 |
| Senior Embedded Security Engineer, Flight Software | True Anomaly | Series D | Denver, CO or Long Beach, CA or SF Bay Area, CA | May 28, 2026 |
| Infrastructure Security Engineer (Secret + Clearance) | Cohere | Series D | Toronto | May 27, 2026 |
| Manager, Security Engineering | Cohere | Series D | United States | May 27, 2026 |
| Product Security Engineer | Supabase | Series F | Remote | May 27, 2026 |
| Staff+ Application Security Engineer | Anthropic | Series G+ | Remote (Friendly (Travel-Required)) | May 26, 2026 |
| Security Engineer - Vuln Management (Infra) | Replit | Series D | Foster City, CA | May 26, 2026 |
| Security Engineer, Infrastructure | Scale AI | Series G+ | New York, NY | May 26, 2026 |
| Staff Security Engineer, Infrastructure | fal | Series D | San Francisco | May 21, 2026 |
| Security Engineer | Helsing | Series D | Munich | May 21, 2026 |
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FAQ
How many Security Engineer jobs are open at Series D+ AI startups?
There are currently 85 open Security Engineer jobs across 42 Series D+ 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 D+ 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.