Full Stack Developer (.NET / React)

About the role

Control Risks is hiring a Full Stack Developer in Madrid, reporting to the CTO. You will work across a modular monolith built with .NET 10 on the backend and React on the frontend, owning features from requirement to production in a small, high-trust team.

Key responsibilities

• Backend: build and extend modules in a clean modular monolith (Domain, Application, Infrastructure, API layers); implement RabbitMQ and HTTP message-based integrations with retry, dead-letter and observability patterns; design PostgreSQL schemas, migrations (Liquibase) and query optimisation; write test-first code (unit, integration and end-to-end API tests)
• Frontend: build accessible UI components and multi-path forms for compliance workflows, keeping the design system consistent and working with the UX designer; integrate with the backend through typed API contracts, handling loading states, error boundaries and optimistic updates
• AI-augmented development: use Claude Code with CLAUDE.md, SKILLS.md and RULES.md, turn Jira requirements and Notion designs into prompts, evaluate AI-generated code rigorously and keep the context layer up to date
• Platform and deployment: build Docker images, deploy and manage workloads on Kubernetes (manifests, Helm charts, secrets), collaborate with DevOps on CI/CD and environments, and take part in on-call rotation

Required profile

• 4+ years of professional .NET development (C#) with clean architecture and SOLID principles
• Genuine TDD discipline, covering unit, integration and end-to-end tests
• Hands-on experience with RabbitMQ or similar message brokers and PostgreSQL
• Practical Kubernetes and Docker experience
• Experience in a modular monolith or DDD-influenced codebase
• Strong written and spoken English

Required skills

• .NET / C#, React and TypeScript
• RabbitMQ, PostgreSQL, Kubernetes, Docker
• Liquibase, CI/CD, ADRs
• Advantage: Claude Code, GitHub Copilot, GCP (Cloud Run, Cloud Storage, Pub/Sub, Vertex AI), Playwright, Neo4j

What we offer

• Competitive compensation and a discretionary global bonus scheme
• Hybrid working where possible, with flexible and remote options
• Career development and direct responsibility on client projects
• Access to business resource groups and an equal opportunity employer