Engineering

Full-time

Security Engineer

Remote (EU)

€130k – €165k + equity

Keep customer data safe as agents touch more real systems. SOC 2, pen tests and threat models. You will join a small, senior team that ships every week and talks to customers often.

What you will do

  • Design and ship core services used by thousands of teams

  • Own reliability, latency and cost for the systems you build

  • Review code, mentor engineers and raise the bar for quality

What we are looking for

  • 5+ years of relevant experience, or equivalent impact

  • Clear written communication and good judgement under ambiguity

  • Curiosity about how AI changes everyday work

Benefits

  • Meaningful equity in a fast-growing company

  • Full health, dental and vision cover

  • $2,000 yearly learning budget and a home office stipend

  • Four weeks of paid time off, plus company-wide rest weeks

Apply for this role

Send your CV or LinkedIn and a few lines about something you built. We reply to every application within a week.

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© 2026 3 Kones, Inc. All rights reserved.

All systems operational

3 KONES

Monthly notes on building with AI. No noise.

Join 18,000 builders. Unsubscribe anytime.

© 2026 3 Kones, Inc. All rights reserved.

All systems operational

3 KONES

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