Staff-level engineer

You’ll work on the systems behind production AI agents, conversations, knowledge bases and complex workflows. You’ll help define how AI capabilities are built, integrated and operated reliably at scale.

You’ll have the opportunity to:

• Lead large, multi-quarter technical initiatives across AI, product and infrastructure
• Design and build backend services and distributed systems using Python, FastAPI, PostgreSQL and AWS
• Build AI orchestration involving LLMs, agents, tool calling, MCP and multi-step workflows
• Develop retrieval, search, vector and document-processing capabilities
• Design for high-throughput, low-latency AI workloads, including caching, queuing, rate limiting and model failover
• Establish strong approaches to observability, testing, reliability and incident response
• Mentor engineers and influence technical direction across the wider organisation
• Work closely with product, ML and research teams to turn emerging AI capabilities into reliable production systems

• 5-7+ years of software engineering experience building scalable cloud applications and APIs
• Strong, recent hands-on Python experience, ideally with FastAPI or similar frameworks
• Strong knowledge of distributed systems, backend architecture, APIs, databases and cloud infrastructure
• Production experience with AWS and relational databases such as PostgreSQL
• A track record of owning complex engineering projects from architecture through to production
• Experience building or integrating AI/LLM-powered products or platforms
• Exposure to agents, tool calling, MCP, RAG, retrieval, embeddings or vector search
• Strong understanding of production reliability, observability, testing and performance
• The ability to influence technical direction while remaining highly hands-on

Experience in environments where correctness, auditability or compliance matter is useful, but not essential.

Why join?

This is a chance to join a small, highly experienced engineering team with a significant technical surface area and the backing of an established global technology organisation. xrbllit

You’ll have genuine ownership over how AI systems are architected and built, with the opportunity to influence engineering practices beyond a single product or feature.

If you’re a Staff-level engineer who enjoys building AI systems from the ground up - and still wants to be deep in the code - we’d be interested in speaking with you.