Full Stack Developer

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πŸ“ Madrid, Community of Madrid, SpainFull time

About this role

Reporting to the CTO, as a Full Stack Developer you will work across the full platform β€” 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.

Please submit your CV in English.

What You’ll Work On

Backend (.NET / Modular Monolith)

β€’ Build and extend modules within a clean modular monolith architecture β€” Domain, Application, Infrastructure, and API layers per module

β€’ Implement message-based integrations over RabbitMQ and HTTP, with proper retry, dead-letter, and observability patterns

β€’ Design and own PostgreSQL schemas, migrations (Liquibase), and query optimisation for compliance-grade data integrity

β€’ Write code test-first β€” unit tests, integration tests with in-memory and real DB where appropriate, and end-to-end API tests

β€’ Contribute to and enforce coding standards, PR reviews, and architectural decisions.

Frontend (React / TypeScript)

β€’ Build complex, accessible UI components and multi-path forms for compliance workflows

β€’ Maintain consistency with our design system and work closely with our UX designer on new feature implementation

β€’ Integrate with the backend via typed API contracts, handling loading states, error boundaries, and optimistic updates correctly

AI-Augmented Development

β€’ Use Claude Code as an active development tool β€” you will work with CLAUDE.md, SKILLS.md, and RULES.md context files to give the AI accurate codebase context

β€’ Translate Jira requirements and Notion design documents into structured Claude Code prompts that produce high-quality, testable code

β€’ Maintain and improve the Claude Code context layer as the codebase evolves, treating it as first-class documentation

β€’ Evaluate AI-generated code with the same rigour as human-written code β€” you own the output

Platform & Deployment

β€’ Build and maintain Docker images for all services, following security and size best practices

β€’ Deploy and manage workloads on Kubernetes clusters β€” writing and reviewing manifests, Helm charts, and managing config/secrets

β€’ Collaborate with DevOps on CI/CD pipelines, environment configuration, and production readiness

β€’ Participate in on-call rotation for production incidents (light, given our scale).

What We’re Looking For

Must-have

β€’ 4+ years of professional .NET development (C#), with strong understanding of clean architecture and SOLID principles

β€’ Solid React and TypeScript experience β€” you write components that are readable, testable, and maintainable

β€’ Genuine TDD discipline β€” you write tests before or alongside code, not as an afterthought; you understand the difference between unit, integration, and end-to-end tests

β€’ Hands-on experience with RabbitMQ or similar message brokers in production systems

β€’ PostgreSQL proficiency β€” schema design, migrations, query analysis, and indexing

β€’ Practical Kubernetes experience β€” you can read and write manifests, understand pod scheduling, and debug deployment issues

β€’ Docker fluency β€” you build lean, layered images and understand multi-stage builds

β€’ Experience working in or contributing to a modular monolith or DDD-influenced codebase

β€’ Strong English communication skills β€” written and verbal

Strong advantage

β€’ Experience using Claude Code, GitHub Copilot, or similar AI coding assistants as a genuine productivity tool in a professional codebase

β€’ Familiarity with structuring AI context files (CLAUDE.md-style) to guide code generation effectively

β€’ Experience with GCP (Cloud Run, Cloud Storage, Pub/Sub, Vertex AI)

β€’ Playwright or similar e2e test framework experience

β€’ Exposure to knowledge graphs, Neo4j, or graph-based data modelling

Our Engineering Ethos

We are direct about what we expect. These are not aspirational values β€” they are how we work:

β€’ Test coverage is a delivery requirement, not a nice-to-have. Core business logic ships with tests.

β€’ PR reviews are substantive. We comment on architecture, not just typos.

β€’ We use AI tooling to move faster, not to lower the quality bar. AI-generated code gets reviewed like any other code.

β€’ We document decisions. ADRs, Notion pages, and Claude Code context files are part of the job.

β€’ We raise issues early. A blocker surfaced on day one beats a missed deadline on day ten.

Frequently Asked Questions

Is the salary disclosed for the Full Stack Developer position at 1eXXHxeg9VjpNhhwFSwcCW?
The salary for this Full Stack Developer role at 1eXXHxeg9VjpNhhwFSwcCW is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Full Stack Developer position at 1eXXHxeg9VjpNhhwFSwcCW located?
This Full Stack Developer role at 1eXXHxeg9VjpNhhwFSwcCW is based in Madrid, Community of Madrid, Spain. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Full Stack Developer role at 1eXXHxeg9VjpNhhwFSwcCW full-time or part-time?
This is listed as a Full time position. It is posted as a Full Stack Developer role in the Confidere department at 1eXXHxeg9VjpNhhwFSwcCW.
Which team or department does the Full Stack Developer at 1eXXHxeg9VjpNhhwFSwcCW belong to?
This Full Stack Developer position is part of the Confidere department at 1eXXHxeg9VjpNhhwFSwcCW. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Full Stack Developer position at 1eXXHxeg9VjpNhhwFSwcCW?
Click the "Apply Now" button on this page. You will be redirected to 1eXXHxeg9VjpNhhwFSwcCW's official application portal hosted on workable where you can submit your application directly.
When was the Full Stack Developer job at 1eXXHxeg9VjpNhhwFSwcCW posted?
This Full Stack Developer position at 1eXXHxeg9VjpNhhwFSwcCW was posted on Jun 2, 2026. Apply as soon as possible β€” early applications are often reviewed first.
Full Stack Developer
1eXXHxeg9VjpNhhwFSwcCW
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