Senior Full Stack Engineer | AI Pentesting

What you’ll own

You’ll join a squad of 4 engineers with a Tech Lead. “Senior” here means you drive decisions, not implement tickets. Concretely:

• Ship product that works at enterprise scale: tens of thousands of assets, millions of findings, complex search, real-time refresh. You’ll make it stay fast.

• Solve hard data problems: PostgreSQL performance, query design, indexing strategies, pagination, caching. Our product is data-heavy and latency-sensitive. This isn’t CRUD.

• Build AI-native workflows: guided triage, assisted remediation, smart extraction from noisy scans. AI is embedded into the product, not bolted on.

• Own the full journey: from vulnerability ingestion → triage → remediation. Risk scoring, developer integrations (CI/CD, Git, ticketing), the whole loop.

• Shape the architecture: data modelling, system design, GraphQL schema. You’ll influence how we build, not just what.

Stack

• Frontend: Svelte + TypeScript, GraphQL client

• Backend: Node.js, GraphQL (Yoga + Pothos), Prisma, PostgreSQL, Kafka

• Infra: AWS, GitLab CI, Grafana

• Deep tech: Python (AI/ML), Go (network tooling)

SOC-2 compliant. Rigorous code review. Comprehensive test coverage. Not bureaucratic.

What’s in it for you

• €80K–105K base salary, based on experience

• Meaningful equity (BSPCE): you’re joining a rocketship post-Series A, pre-scale

• Real impact: you’ll talk to customers, see your work in production weekly, influence product direction

• Conference speaking: we send engineers to RSAC, BlackHat, DEFCON, BSides (NYC, Vegas, SF, London, Paris)

• Growth path: Tech Lead track is open and real, not theoretical

• Health (Alan), meals (Swile), sport (EGYM Wellpass), top-tier equipment, open-source time

Experience

• 5+ years shipping production web apps, strong on both frontend and backend

• TypeScript fluency: you actually leverage the type system, not just tolerate it

• GraphQL depth: you’ve designed schemas, not just consumed them

• Ownership mindset: you see a problem, you fix it, you don’t file a ticket and wait

• Clear communicator: can explain tradeoffs to non-technical stakeholders

Bonus: Svelte experience · Security/DevSecOps background · Startup DNA

Interview in 1 week, no BS

1. HR chat — 30 min

2. In-person challenge and technical deep dive — 1h

3. Leadership & strategy with CTO — 30 min

4. Offer