Senior Fullstack Engineer - Saint-Nazaire - Escape

Description

Overview

Escape is one of Europe\'s fastest-growing cybersecurity startups, backed by Y Combinator. We build AI-powered automated penetration testing that finds vulnerabilities before attackers do. We operate with a US go-to-market playbook (product-led, fast iteration cycles, aggressive growth targets) combined with deep European engineering DNA. Our 15-person engineering team ships weekly, owns what they build, and solves hard problems at the intersection of security, distributed systems, and AI.

We are looking for a Senior Full Stack Engineer to own significant features end-to-end on our SaaS platform: the interface through which security teams discover, triage, and remediate vulnerabilities across their applications. You will work in a squad of 4 engineers with a Technical Lead. Senior here means you drive technical decisions within your scope, mentor others, and ship autonomously.

Key Details

• Location: Paris , 2 days remote/week
• Company: Escape - Leading AI Cybersecurity Startup
• Cofounders: CEO (Tristan Kalos) and CTO (Antoine Carossio)
• Engineering Team: 15 Engineers, 4 Technical Leads, 2 Product Owner

What you will actually work on

• Building a product that stays fast at enterprise scale: ship UIs that remain snappy with huge datasets — tens of thousands of assets/endpoints, millions of findings, complex faceted search, and real-time refresh — without turning the frontend into a slow, fragile mess.
• PostgreSQL & data performance: work on query design, indexing strategies, pagination patterns that don\'t fall apart, reducing N+1, caching where it makes sense, and shaping data for GraphQL so the UI stays responsive.
• AI-native interfaces: workflows where AI meaningfully changes how security teams work — guided triage, prioritization, assisted remediation, and smart extraction of insights from noisy scans — embedded into the product with tight UX + reliability requirements.
• Security & developer workflows end-to-end: design and ship from discovery → triage → remediation: risk scoring views, remediation journeys, and integrations (webhooks, CI/CD, Git providers, ticketing). Full-stack scope: UX, APIs, data model, and infra considerations.
• Complex, actionable visualization: turn raw security signals into daily-use interfaces — attack-surface exploration, relationship graphs, drilldowns, time-series comparisons, and explainability views.
• Architecture decisions that stick: influence state management, caching strategy, GraphQL schema design, API contracts, and front/back boundaries with a pragmatic, maintainable approach.
• Owning features like a mini-founder: take problems from why they are painful to customers to shipping the solution, measuring impact, tightening the loop, and mentoring others.

Our Stack

• Frontend: Svelte + TypeScript, GraphQL (client)
• Backend: , GraphQL (Yoga + Pothos), Prisma, PostgreSQL, Kafka
• Infrastructure: AWS (FTR-certified), GitLab CI, Grafana
• Deep Tech (exposure, not required): Python (AI/ML), Go (network tooling)
• Compliance: comprehensive test coverage (unit, integration, E2E), Codecov, SOC-2 compliant processes. Code review is rigorous but not bureaucratic.

Experience

• 5+ years building production web applications, with depth in both frontend and backend
• Strong TypeScript: not just \'can write it\' but actually leverages the type system
• GraphQL experience: you\'ve designed schemas, not just consumed them
• Ownership mentality: you see a problem, you fix it, you don\'t wait for permission
• Clear communication: can explain technical tradeoffs to non-technical stakeholders

Bonus Points

• Experience with Svelte (or willingness to ramp fast: it\'s learnable in a week if you know React/Vue)
• Background in security, DevSecOps, or developer tooling
• Startup experience: you know what \"shipping fast\" actually means

What we offer

• Equity: Significant BSPCE equity — we just raised at a strong valuation, and early engineering hires have meaningful upside
• Health: Comprehensive health insurance with Alan
• Meal vouchers with a Swile Card
• Sport subscription with Gymlib
• A place to learn and grow: Unlimited access to books and online courses to help you excel in your role
• Tech perks: The latest tech gear and equipment to do your best work
• Open Source: Free time to work on Open Source projects
• Global exposure: Present at top international conferences and events