AI Product Engineer / Senior AI & LLM Software Engineer (m/f/d), Luxembourg on-site, 6 months
esklusiv GmbH
Contact person: Maryna Esser
Luxemburg, Luxembourg
Energy IndustryArtificial Intelligence Markup Language (AIML)
Description
For an exciting project in the energy sector in Luxembourg, we are looking for an experienced AI Product Engineer / Senior AI & LLM Software Engineer (m/f/d) with a strong software engineering background and hands-on experience building LLM-based applications and AI agents.
The focus of the role is to further develop an existing agentic AI platform and turn prototypes and AI assistants into robust, tested and production-ready solutions.
Your Responsibilities
- Turn existing AI/LLM prototypes into production-ready applications
- Develop and extend backend services, APIs and enterprise integrations
- Build applications using LLMs, AI agents, tools/skills and RAG
- Implement LLM evaluations and guardrails
- Develop automated tests and technical documentation
- Integrate enterprise systems and LLM gateways
- Build usage and cost monitoring, including dashboards and alerts
- Support and improve existing AI assistants
- Support migrations to new model providers
- Work closely with the Product Owner and Backend Engineer
- Conduct code reviews, pairing sessions and knowledge transfer
Your Profile
- 5+ years of software engineering experience
- Ideally 1–2 years of hands-on experience building LLM-based applications
- Strong backend development skills in Python and/or TypeScript
- Solid experience with APIs, services and system integrations
- Hands-on experience with AI agents, RAG, LLM evaluation and guardrails
- Proven experience with AI-assisted development tools / coding agents
- Familiarity with containers, Kubernetes, GitOps and CI/CD
- Experience with LLM gateways, such as LiteLLM, is a plus
- Proactive and autonomous working style with the ability to take ownership end-to-end
- Fluent English
Project Details
- Start: 16 November 2026
- Duration: 6 months / approx. 132 days
- Workload: Full-time, 5 days per week
- Location: Luxembourg, primarily on-site