Senior AI Engineer
Keystone Solutions · Bruxelles, Belgium
Mission Overview:
Keystone Solutions is seeking a Senior AI Engineer to join a consultancy mission at a client site, focusing on the development of innovative AI services. This role involves working closely with internal teams to transform complex AI projects into operational services.
Role Responsibilities:
As a Senior AI Engineer, you will be responsible for delivering various components of AI services under Keystone Solutions' consultancy model. Your key responsibilities will include:
- Delivering the RAG pipeline end-to-end, from retrieval strategy to answer generation.
- Creating the ingestion pipeline: connectors to source platforms, chunking, embedding, incremental refresh.
- Implementing security trimming and ACL propagation.
- Managing agent orchestration, prompt templates, and guardrails.
- Setting up evaluation and tracing: offline evaluation sets, retrieval and answer-quality metrics, end-to-end tracing of requests and agent steps.
- Producing Terraform, Helm, and Azure DevOps artifacts needed for service deployment and operation.
- Ensuring observability and cost control: instrumentation for latency, token consumption, and run cost, plus quality regression detection after model or prompt changes.
- Providing hypercare and early production support: incident analysis, tuning, runbooks, documentation, and handover of the service to the engineer responsible for the Run phase.
Why Join Keystone Solutions?
By joining Keystone Solutions, you will experience:
- Consultancy Nature: Engage in on-site work, embodying the consultant identity.
- Dynamic Projects: Tackle a variety of challenges across different client environments.
- Turbo-Charged Learning: Benefit from professional development and broad learning experiences.
- Skyrocketing Ambition: Enjoy a commitment to career growth within our framework.
- Values: As a
If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.
Duration: As soon as possible - 02/11/2026 4 weeks • (full time)
Skills required:
- Azure DevOps - Level: Advanced - Most recent: This year
- Azure Kubernetes Service - AKS - Level: Advanced - Most recent: This year
- Azure OpenAI Service - Level: Advanced - Most recent: This year
- LangChain - Level: Intermediate - Most recent: Any time
- LLM / Large Language Models - Level: Advanced - Most recent: This year
- Python - Level: Advanced - Most recent: This year
- RAG (Retrieval-Augmented Generation) - Level: Advanced - Most recent: This year
- Terraform - Level: Advanced - Most recent: This year
- Vector databases - Level: Intermediate - Most recent: This year
Language requirements:
Dutch or French
Level Native or bilingual proficiency
English
Level Full professional proficiency