Security Engineer · London
Security Engineer Jobs in London
There are currently 10 open Security Engineer jobs in London across 9 AI startups. 30% of these roles are at Series A–B startups. Every listing links straight to the company's official application page.
10Open roles
9Companies hiring
May 20, 2026Last updated
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Funding-stage mix
Series C 5 (50%)Series A 2 (20%)Series D 1 (10%)Series B 1 (10%)Growth 1 (10%)
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Open Security Engineer Roles in London
| Role | Company | Stage | Location | Posted |
|---|---|---|---|---|
| Senior Security Engineer | Mixpanel | Series C | London, UK (Hybrid) | May 20, 2026 |
| Security Engineer | StackOne | Series A | London | May 20, 2026 |
| Security Engineer | Encord | Series C | London | May 12, 2026 |
| Security Engineer | Granola | Series C | London | May 12, 2026 |
| Security engineer, application security (UK) | Writer | Series C | London, UK | May 11, 2026 |
| Security engineer, detection and response (UK) | Writer | Series C | London, UK | May 11, 2026 |
| Security Engineer - Product Security | Aircall | Series D | London Office | May 7, 2026 |
| Security Engineer | incident.io | Series B | London | Jan 1, 2026 |
| Founding Platform & Security Engineer | Gradient Labs | Series A | London Office | Nov 27, 2025 |
| Security engineer | Bending Spoons | Growth | Milan (Italy), London (UK), Madrid (Spain), Warsaw (Poland), or fully remote | - |
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FAQ
How many Security Engineer jobs are open in London?
There are currently 10 open Security Engineer jobs in London across 9 AI startups on Fast AI Jobs.
What funding stages are hiring Security Engineers in London?
30% of open Security Engineer roles in London 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.