Madrid (Hybrid: 3 days office / 2 remote)

€60K–65K + 10% bonus + Benefits

International environment | 20 days remote work abroad

3 open positions

About the Opportunity

We are currently supporting a fast-growing international e-commerce technology hub in Madrid that is heavily investing in AI-first engineering and next-generation agentic systems.

This is a senior-level engineering role at the intersection of AI, backend systems, and developer productivity, focused on building production-grade AI capabilities that directly impact how software is built, tested, deployed, and maintained.

You will join a highly autonomous, international engineering environment where teams own products end-to-end and have strong technical decision-making responsibility.

What you will be doing
- Designing and building AI-driven SDLC tools (code generation, PR review automation, intelligent testing, documentation support)
- Developing LLM-powered workflows embedded into CI/CD pipelines
- Building backend AI services and scalable APIs in Python, Java, Kotlin, or JavaScript




- Implementing context-aware AI systems using MCP (Model Context Protocol) and context engineering principles
- Working with LLM orchestration, prompt design, structured outputs, and tool calling
- Building RAG-based systems using embeddings and vector databases
- Adding observability, monitoring, evaluation, and guardrails to production AI systems
- Improving engineering productivity through automation across the development lifecycle

What we are looking for
- 5–10 years of software engineering experience (backend or full stack)
- Strong experience with Python, Java, Kotlin, or JavaScript
- Proven experience building and shipping LLM-powered applications into production
- Strong understanding of:
- Prompt engineering and LLM orchestration
- RAG, embeddings, and vector databases
- API design and distributed systems
- CI/CD pipelines and production reliability
- Experience with Docker, Kubernetes, and/or Terraform

📌 Senior AI Engineer (Madrid)
🏢 E-Frontiers
📍 Madrid