Senior AI / LLM Engineer at Halian

Halian is supporting a client on a strategic initiative building LLM-driven applications and looking for a Senior AI / Software Engineer to join the project in Paris, France. Position: Senior AI / LLM Engineer (m/f/d) Location: Paris, France Type: Contract Posted: March 2, 2026 Key Responsibilities: - Design backend applications using large language models - Construct LLM architectures including agents, workflows, and retrieval-augmented generation - Implement intelligent pipelines with LangChain and LangGraph frameworks - Integrate AI solutions into secure, scalable, and compliant production environments - Maintain performance, reliability, and maintainability standards - Collaborate with cross-functional teams on technical architecture - Convert business needs into robust backend solutions Required Qualifications: - Senior-level Python development expertise - Production experience building LLM-based applications - Understanding of security, compliance, and performance constraints - Autonomous work capability with strong collaboration skills - Technical design and communication proficiency Preferred: Background in regulated sectors, particularly banking or financial services. About Halian: 28 years of experience in technology staffing and solutions. Commitment to diversity, equity, and inclusion in hiring practices.