Full Stack Engineer

The system is composed of a React frontend and NestJS backend in a monorepo, utilizing GraphQL (Apollo) for API gateways and services for domain-specific logic. We heavily leverage AWS for infrastructure, managed via Terraform, and maintain high standards for code quality and security., * Design and implement end-to-end features across the stack, from database schemas to UI components.

• Maintain and improve the modular architecture of the monorepo. Ensure clean separation of concerns.
• Work with databases and ORM tools for data modeling and migrations.
• Define and implement REST and GraphQL schemas and resolvers, ensuring type safety and performance.
• Design ingestion, transformation, and publishing flows across 3rd party services integration, so data lands in the appropriate entities.
• Build responsive and accessible UI components using the shared design system.
• Write comprehensive unit, integration, and E2E tests, and ensure CI/CD pipelines (GitHub Actions) remain green.
• Monitor and resolve security vulnerabilities, manage secrets (SSM/GitHub Secrets), and ensure best practices.
• Maintain a clean git history, document changes, and mentor other developers on monorepo best practices.

• Strong proficiency in TypeScript, Node.js, and React, experience with NestJS (Modules, Guards, Interceptors, Dependency Injection).
• Expertise with GraphQL schema design, federation or gateway patterns, query performance controls, and translating schemas into developer-friendly docs plus TypeSpec or OpenAPI assets.
• Hands-on experience with distributed caches, job queues, and async workflows (Redis, Bull/BullMQ, cron schedulers) plus strategies to keep data fresh after partner webhooks.
• Database experience: PostgreSQL, Redis, and ORMs (specifically Prisma).
• Solid testing and reliability habits spanning Jest unit or functional suites, contract tests, and browser automation (Playwright or Puppeteer) plus observability tools such as Sentry, New Relic, and Prometheus., * Containerization: Solid understanding of Docker and Docker Compose for local development and deployment.
• Fluency in AWS (ECS Fargate, S3, RDS, SSM, CloudWatch) as well as Terraform, and GitHub Actions so you can debug deployments end to end.
• Experience ingesting marketplace or delivery-service data sets and normalizing them into unified financial or operational models.
• Hands-on work with DSP APIs (Deliveroo, Uber Eats, Grubhub) or kiosk and POS systems.
• Exposure to security scanning and compliance pipelines (Trivy, GitHub Advanced Security, etc.) and experience triaging CVEs before production deploys.
• Experience building production-grade AI agents: creating robust evals, implementing guardrails, and architecting RAG pipelines.

• You take pride in your work and own the lifecycle of a feature from design to deployment.
• You enjoy tackling complex architectural challenges in a distributed system.
• You write readable, maintainable, and well-documented code.
• You use AI to move faster, never at the cost of quality.
• Short iterations, small PRs, and frequent deployments.
• We use feature flags to decouple deployment from release, allowing us to test in production safely.

Pay: 60,000.00€ - 80,000.00€ per year