Full Stack Developer at Control Risks | Berlin, DE | Rezi

Full Stack Developer at Control Risks

Full Stack Developer

Control Risks · Berlin, DE

1 months ago

Full Stack Developer

Control Risks · Berlin, DE

a month ago
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About the Role

As a Full Stack Developer reporting to the CTO, you will work across the full platform, a modular monolith built in .NET 10 on the backend and React on the frontend. You will own features from requirement to production, working in a small, high-trust team where your decisions have direct product impact.

Responsibilities

  • Build and extend modules within a clean modular monolith architecture, including Domain, Application, Infrastructure, and API layers per module.
  • Implement message-based integrations over RabbitMQ and HTTP, incorporating retry, dead-letter, and observability patterns.
  • Design and own PostgreSQL schemas, migrations (Liquibase), and query optimization for compliance-grade data integrity.
  • Write code test-first, including unit tests, integration tests with in-memory and real DB, and end-to-end API tests.
  • Contribute to and enforce coding standards, participate in PR reviews, and influence architectural decisions.
  • Build complex, accessible UI components and multi-path forms for compliance workflows.
  • Maintain consistency with the design system and collaborate with the UX designer on new feature implementation.
  • Integrate with the backend via typed API contracts, managing loading states, error boundaries, and optimistic updates.
  • Use Claude Code as an active development tool, working with CLAUDE.md, SKILLS.md, and RULES.md context files for accurate codebase context.
  • Translate Jira requirements and Notion design documents into structured Claude Code prompts to produce high-quality, testable code.
  • Maintain and improve the Claude Code context layer as the codebase evolves, treating it as first-class documentation.
  • Evaluate AI-generated code with the same rigor as human-written code, owning the output.
  • Build and maintain Docker images for all services, adhering to security and size best practices.
  • Deploy and manage workloads on Kubernetes clusters, including writing and reviewing manifests and Helm charts, and managing config/secrets.
  • Collaborate with DevOps on CI/CD pipelines, environment configuration, and production readiness.
  • Participate in on-call rotation for production incidents.

Requirements

  • 4+ years of professional .NET development (C#) with a strong understanding of clean architecture and SOLID principles.
  • Solid React and TypeScript experience, writing readable, testable, and maintainable components.
  • Genuine TDD discipline, writing tests before or alongside code and understanding the differences between unit, integration, and end-to-end tests.
  • Hands-on experience with RabbitMQ or similar message brokers in production systems.
  • PostgreSQL proficiency, including schema design, migrations, query analysis, and indexing.
  • Practical Kubernetes experience, including reading and writing manifests, understanding pod scheduling, and debugging deployment issues.
  • Docker fluency, including building lean, layered images and understanding multi-stage builds.
  • Experience working in or contributing to a modular monolith or DDD-influenced codebase.
  • Strong English communication skills, both written and verbal.
  • Experience using AI coding assistants like Claude Code or GitHub Copilot as a genuine productivity tool in a professional codebase.
  • Familiarity with structuring AI context files (CLAUDE.md-style) to guide code generation effectively.
  • Experience with GCP (Cloud Run, Cloud Storage, Pub/Sub, Vertex AI).
  • Playwright or similar e2e test framework experience.
  • Exposure to knowledge graphs, Neo4j, or graph-based data modelling.

Skills

  • .NET
  • C#
  • Clean Architecture
  • SOLID principles
  • React
  • TypeScript
  • TDD
  • Unit Testing
  • Integration Testing
  • End-to-End Testing
  • RabbitMQ
  • Message Brokers
  • PostgreSQL
  • Schema Design
  • Migrations
  • Query Optimization
  • Kubernetes
  • Docker
  • Modular Monolith
  • DDD
  • Claude Code
  • AI Coding Assistants
  • GCP
  • Playwright
  • Knowledge Graphs
  • Neo4j

Experience Level

  • 4+ years of professional .NET development

About the Company

  • Test coverage is a delivery requirement, not a nice-to-have. Core business logic ships with tests.
  • PR reviews are substantive, commenting on architecture, not just typos.
  • AI tooling is used to move faster, not to lower the quality bar; AI-generated code is reviewed like any other code.
  • Decisions are documented via ADRs, Notion pages, and Claude Code context files.
  • Issues are raised early; a blocker surfaced on day one is preferred over a missed deadline on day ten.