Senior AI Engineer (LLMs & Knowledge Graphs)

Role Summary

Our client, a Fortune 50 leader in enterprise solutions and innovations, is seeking a Senior AI Engineer with Knowledge Graphs and LLMs skills to join their AI incubator to scout, incubate, and validate internal ideas. This role is part of a high-impact strategy leveraging Graph Neural Networks (GNNs) and Generative AI to redefine workflows, semantic search, and intelligence for enterprise solutions in Finance, Operations, Supply Chain, Engineering, or Investments.

This is a long-term remote-first contract position with a required overlap of US working hours (2-6 PM CET) .

Responsibilities

• Build Agentic Workflows: Implement orchestration, retrieval pipelines, and validator agents using graph-aware tools.
• Optimize Retrieval: Build hybrid search pipelines (lexical + vector) and integrate vector databases like FAISS, Milvus, or Pinecone.
• Model Integration: Integrate LLMs (Azure OpenAI, Anthropic) and support domain-specific fine-tuning or adapter models.
• Scalable Engineering: Develop robust API endpoints and ETL pipelines to support model and agent runtimes.
• Experiment & Evaluate: Create evaluation suites for reliability, drift detection, and performance optimization.

Requirements

• Python Expertise: 3+ years of strong Python engineering experience.
• Graph Intelligence and Databases: Working knowledge of knowledge graph modeling (schemas, ontologies, entity resolution) and graph databases. Hands-on experience with Neo4j, Memgraph, AWS Neptune, ArangoDB, or similar. Familiarity with graph embeddings and GNNs (GCN/GAT) is a plus.
• Evaluation & Experimentation: Comfortable designing experiments, building eval harnesses, and reasoning about model quality, robustness, and bias in production AI systems.
• Modern AI Patterns: Hands-on experience building RAG pipelines and agentic workflows. Comfort with prompt engineering and tool/function calling. Experience building text-to-SQL or semantic parsing capabilities over structured data sources.
• LLM Observability: Familiarity with LLM evaluation frameworks (e.g., Ragas, DeepEval, Langfuse) and production monitoring of AI systems.
• Retrieval & Search: Lexical + vector + hybrid retrieval, embeddings, and reranking. Experience incorporating user and context signals for personalization.
• Fine-tuning & Adaptation: Experience with fine-tuning and adaptation patterns (e.g., LoRA/QLoRA, instruction tuning, embedding model fine-tuning).
• APIs & Integrations: Solid knowledge of APIs, microservices, and data-centric integrations.
• Engineering Discipline: Solid software engineering fundamentals - clean code, testing, debugging, code reviews, and comfort working in agile pods.
• Cloud & Deployment: Experience with AWS/Azure/GCP and CI/CD workflows.
• Excellent problem-solving skills and keen attention to detail.
• Ability to participate in the discussions and lead the technical discussions
• Have a consultancy mindset → always try to find a solution for the client
• Highlights
• If you are passionate about AI, Graph-centric AI , Python , and building next-generation agentic workflows , this role with our client offers an exciting opportunity to work on cutting-edge R&D projects!
• Type: Full-time & Long-term contract work

Start Date : ASAP

• Location: Remote (99%) in Europe; must be able to travel freely within Europe for workshops.
• US Time Zone Overlap: Required ( 2 PM - 6 PM CET )
• Contract with European LLC