Job Description

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:
• Language requirements:
• Dutch or French
• Level Native or bilingual proficiency
• English
• Level Full professional proficiency
• 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