Senior Fullstack Engineer (AI-Native, DRI)

Tasks

End-to-End Feature Shipping: Own features completely from ambiguous founder input to live production. Translate documented user journeys into technical specs, full-stack implementation, and automated E2E coverage.

• AI Workflow Leadership: Set and maintain the team's engineering standards for working with coding agents (authoring CLAUDE, AGENTS, cursorrules) and configure MCP servers to maximize development leverage.

• Test Automation: Build and maintain production-grade Playwright suites covering critical journeys (AI-generated, human-reviewed) to ensure a baseline of 100% journey coverage on revenue-critical flows.

• Production Reliability & DevOps: Define SLOs, instrument observability (Sentry, OpenTelemetry), and carry incident response for your owned surfaces.

• GDPR-Aligned Architecture: Maintain and design systems in compliance with data minimization, purpose limitation, and EU-only hosting infrastructures (Hetzner, Scaleway, AWS Frankfurt, Vercel EU).

• Technical Decision Making: Document architectural decisions clearly in writing (ADRs) and actively participate in high-bar technical debates.

Requirements

Engineering Depth: Proven track record of shipping complex production systems end-to-end, ideally as an early engineer at a startup or within a high-bar product team.

• Technical Stack: Fluency in TypeScript across the entire stack, Next.js 15+ / React 19+ (App Router, Server Components, Server Actions), and PostgreSQL with an ORM (Drizzle or Prisma).

• AI-Native Mastery: Daily, fluent use of AI coding agents (Claude Code, Cursor, or equivalent) as your primary execution layer, with clear opinions on when agents accelerate or hinder development.

• Testing & Operations: Production-grade experience with Playwright (or Cypress), on-call incident response, and structured logging. Baseline literacy in GDPR/BDSG (§32 BDSG) is a strong plus.

• DRI Mindset: Highly autonomous individual who thrives without a manager layer running sprints or setting tickets. You measure success by user outcomes, not lines of code.

• Communication & Language: Exceptional written English (C1+) for async documentation. Additionally, professional proficiency in German is required to confidently run 30-minute calls with Jobcenter caseworkers without switching languages.