SOFTWAREENGINEER

Madrid, Spain (Hybrid)

• Built MCP servers that expose reusable tools via a standard protocol, enabling cross-functional teams to plug them into their AI agent orchestration harnesses and workflows.
• Collaborated on developing RAG systems with Qdrant vector search and Cohere Reranker in the retrieval pipeline, plus multimodal chatbots handling 1000+ daily queries.
• Deployed and operated self-hosted open-source LLMs for internal AI workloads, reducing dependency on third-party APIs and improving data control.
• Extended the LangChain/LangGraph agent orchestration harness with CLI execution in ephemeral sandboxes and pluggable skills (reusable agent capabilities), improving DOCX, PPTX, and XLSX analysis and generation quality by ~80%.
• Implemented a skill approval workflow with an AI agent reviewer and Wiz security scanning that flags compromised or malicious skills for mandatory Cyber, DPO, and Technology review via Jira before they can run in the agent orchestration harness.
• Built an AI-powered tool that creates static websites and exposes them via an internal file server, enabling non-technical employees to generate their own content and saving thousands of hours of manual work.
• Deployed containerized applications with Docker on AWS.
• Built end-to-end solutions with TypeScript, Python, Next.js, React, TanStack, Express.js, Hono, FastAPI, PostgreSQL, Qdrant, Redis, LangChain, LangGraph, and AWS services.

Madrid, Spain (Remote)

• Built complete web applications from the ground up using React and Express.
• Developed responsive frontend applications with React, Vite, TypeScript, and Tailwind CSS, achieving 100% mobile compatibility.
• Worked for a call center company serving 1000+ active users.
• Built and maintained GitLab CI/CD pipelines for automated testing and deployments.
• Deployed backend and frontend apps to AWS EC2 and S3 with environment-based configuration.
• Developed REST APIs with Express and NestJS using TypeScript, MySQL, and PostgreSQL.
• Led task estimation and sprint planning, taking on leadership duties including code reviews and team coordination.
• Developed robust backend services using Express with 99.9% uptime.
• Collaborated with 3+ team members through Git workflows and code reviews.
• Developed 20+ new features across API, ERP, and web applications, increasing user productivity by 35%.
• Optimized Prisma and MySQL queries, reducing page load times by 45%.

Madrid, Spain (Remote)

• Developed custom modules and backend solutions for e-commerce platforms serving enterprise clients including Repsol, Perfumerías Unidas, and Bella Aurora.
• Occasionally built and maintained responsive frontends while collaborating with distributed teams via Git and GitHub.
• Worked in Scrum to ship features and platform enhancements across client projects.
• Improved application scalability through architecture optimization under growing traffic.

Mallorca, Spain (Remote)

• Built internal software to improve data tracking and operational efficiency.
• Designed and optimized PostgreSQL databases with Prisma ORM, improving query performance by 50%.
• Refactored and optimized existing code for better performance and maintainability.