Design and implement AI-powered applications using LLMs, RAG, and agentic workflow patterns
Build backend services, APIs, and integrations needed for AI-centric applications
Design and improve retrieval pipelines, including chunking, embeddings, vector search, hybrid search, metadata filtering, and reranking
Work with LLM APIs and AI orchestration frameworks to build reliable workflows
Implement evaluation, testing, monitoring, and observability for AI applications
Help define safe and practical patterns for tool use, human-in-the-loop approval, and agentic behavior
Collaborate with other engineers and product/business stakeholders
Support model and framework selection based on quality, cost, latency, maintainability, and security
Help troubleshoot issues such as hallucinations, poor retrieval quality, high latency, cost inefficiency, and unreliable outputs

You are able to speak, read and write fluently English and French or Dutch
Minimum 5 years of experience as Software Engineer, preferably in backend or full-stack development
Minimum 1 to 2 years of experience integrating LLMs or other generative AI services into software applications
Practical knowledge of RAG, embeddings, vector search, and retrieval quality improvement
Strong programming skills in Python
Experience with MCP, A2A, tool calling, or multi-agent workflows
Experience designing maintainable services with proper testing, logging, CI/CD, and deployment practices
Understanding of AI application evaluation, including test datasets, quality metrics, regression testing, and user feedback
Good understanding of cloud-native application development
Security-conscious mindset when working with internal or sensitive data
Ability to communicate technical trade-offs clearly and pragmatically
Ability to distinguish when AI, RAG, or agents are useful and when a simpler deterministic solution is better

Enjoy a comprehensive benefits package, including hospitalization and outpatient insurance
A pension and group insurance plan
Employee wellbeing initiatives
Sports and social events
Gifts for special occasions
Meal and eco vouchers to support daily needs and sustainable purchases
Monthly representation fees to support work-related expenses
32 vacation days (20 + 12 for a 40-hour week)
Flexible homeworking policy

Expleo Group

Open Positions (1)