Senior AI Engineer

£75,000 - £100,000 + bonus + exceptional benefits

Build production-grade LLM and GenAI solutions inside one of the UK's fastest-growing enterprise AI teams.

This is a hands on engineering role with a multi award winning UK consultancy whose AI practice has scaled rapidly through strategic acquisition and a strong delivery pipeline across commercial, central government and defence clients. You'll be designing, building and shipping enterprise GenAI systems in Python.

• Designing and building production LLM and GenAI solutions in Python - from prototype through architecture to deployment.
• Implementing advanced RAG pipelines - hybrid search, re ranking, query rewriting, context compression, evaluation and grounding.
• Working with vector stores such as Azure AI Search, Pinecone, Qdrant, Weaviate and Chroma, and tuning embedding models for enterprise data.
• Building agentic systems using frameworks like LangGraph, Semantic Kernel, LangChain, LlamaIndex and AutoGen - tool use, function calling, multi step reasoning and orchestration.
• Integrating foundation models via Azure OpenAI, AWS Bedrock and open weight model endpoints (Llama, Mistral, Claude, GPT family).
• Applying prompt engineering, guardrails, evaluation and observability - using tooling such as LangSmith, Langfuse, Ragas, promptfoo and Azure AI Content Safety.
• Productionising solutions with FastAPI, async Python, Pydantic, Docker and Kubernetes, deployed into Azure native infrastructure.
• Partnering with data engineers, solution architects and advisory consultants on end to end AI programmes.
• Engaging directly with senior client stakeholders to shape solution direction.

• Proven Python engineering background - clean, tested, production ready code.
• Hands on experience building and deploying LLM / GenAI solutions in production - not just POCs or notebooks.
• Strong working knowledge of RAG patterns, agentic frameworks, vector databases and embedding models.
• Familiarity with prompt engineering, LLM evaluation and guardrail design (hallucination mitigation, prompt injection defence, content safety).
• Experience with cloud native deployment - Azure preferred, with Docker, Kubernetes and CI/CD.
• Solid grasp of LLMOps - versioning, tracing, monitoring, cost management and responsible AI.
• Consultative, client ready communication - comfortable translating ambiguous business problems into AI solutions.

• Join a fast scaling AI practice backed by two strategic acquisitions and a packed pipeline of enterprise GenAI delivery.
• Advisory led, not body shop - you shape the solution, not just implement someone else's design.
• Work across commercial, central government and defence - genuinely interesting problems, not just marketing chatbots.
• Top Employer award winner with an exceptional benefits package, strong development pathways, and a culture that consistently ranks among the best in UK tech consulting.
• Real ownership, real impact, and a clear runway into senior technical leadership.

• Competitive compensation package with strong base salary and bonus opportunities.
• Generous and growing annual leave, including loyalty days and birthday leave (up to 29 days total).
• Comprehensive health support, including private medical insurance and 24/7 wellbeing assistance.
• Family first policies with enhanced maternity, adoption, and paternity leave.
• Flexible, trust based working environment designed to support work-life balance.
• Ongoing investment in people through training, coaching, wellbeing support, and lifestyle perks.

Bright Purple is an equal opportunities employer: we are proud to work with clients who share our values of diversity and inclusion in our industry.