Senior AI Agent Engineer — Remote, End-to-End Systems

Siemens Energy; Madrid; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Competitive salary

Meal allowance

Health insurance coverage

Remote work permitted within the same/

Pontes days (Portugal)

Job summary

Siemens Energy is seeking a Staff AI Agent Engineer in Spain to own AI agent products from research prototype to production. You will design, build, deploy, and monitor agents that support large-scale gas services operations and project management for multi-billion-euro installations.

This is a high-autonomy team with impact across the Factory. You will work with Python/TypeScript, fine-tuning LLMs, embeddings, and production-ready services.

Qualifications

• 6–9 years delivering AI/ML solutions in production, with demonstrable ownership of systems that are still running and generating value.
• A research-oriented mindset; PhD or research background is a plus.
• Strong hands-on skills building production software in Python (TypeScript/Go a plus), with experience in LLM integration, fine-tuning, and embedding pipelines – not just prompt engineering.
• Experience deploying cloud-native AI workloads (AWS preferred – CDK, Serverless, Bedrock) with attention to cost, latency, and reliability.
• Hands-on expertise with LLM providers and frameworks: Azure OpenAI, AWS Bedrock, Hugging Face, LangChain/LangGraph.

Responsibilities

• Own one or more AI agent products end-to-end – design, build, deploy, monitor, and iterate – delivering value across business functions.
• Build production agents and tools from scratch in Python/TypeScript, including LLM fine-tuning and embedding adaptation.
• Stay at the frontier of agentic AI research – evaluate techniques, run experiments, translate advances into production improvements.
• Establish and evolve best practices for agent evaluation pipelines, RAG strategies, prompt optimisation, and caching.
• Collaborate with product owners, domain experts, and stakeholders to translate complex workflows into reliable agent behaviours.
• Contribute to the AI Agent Factory platform – reusable templates and templates.

Job description

Siemens Energy is seeking a Staff AI Agent Engineer in Spain to own AI agent products from research prototype to production. You will design, build, deploy, and monitor agents that support large-scale gas services operations and project management for multi-billion-euro installations.

This is a high-autonomy team with impact across the Factory. You will work with Python/TypeScript, fine-tuning LLMs, embeddings, and production-ready services.