Madrid (Hybrid: 3 days office / 2 remote)
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€70K–80K + 15% 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
- Strong product mindset and ability to turn ambiguous requirements into scalable technical solutions
Nice to have
- MCP or context engineering experience
- LangChain or similar LLM frameworks
- Graph databases
- Streamlit or Jupyter
- Platform engineering or infrastructure as code
- NLP or applied AI experience
Why this role
- Work on real production AI systems rather than prototypes
- High ownership and autonomy in a senior engineering team
- Strong engineering culture with international collaboration
- Direct impact on how software is built and delivered across teams
- Fast-moving AI transformation programme supported at leadership level
Location and working model
- Madrid-based hybrid model (3 days office / 2 remote)
- Versátil working hours
- International collaboration across European tech hubs
- Occasional travel opportunities (Vienna, Krakow, Munich)
Hiring process
- Interview with Hiring Manager and AI Specialist (45–60 min)
- Technical assessment (Python, Java, or Kotlin)
- Final onsite interview and offer
About E-Frontiers
At E-Frontiers, we connect technology professionals with leading international companies across Europe. xhfqzwm We support candidates throughout the hiring process, ensuring transparency, efficiency, and strong long-term alignment.