Job Description

Senior Software / Platform Engineer (LLM / AI Interest) | Brand new AI Platform
? 120,000 - 130,000
? London - 4 days a week in office (Paddington)
?? Python, GCP, Kubernetes, Terraform, CI/CD, AI / LLM interest
Here at Burns Sheehan, we're working with a leading UK tech business in the payments and financial services space - processing billions in transactions each year and supporting around 20% of all UK card payments. They're continuing to invest heavily in their engineering function and are now expanding a dedicated AI team that's quickly becoming a key part of their technology strategy.
They're hiring experienced Software / Platform Engineers to help build and scale their internal AI Platform - the infrastructure, tooling, and developer experience layer that enables teams across the business to develop and deploy AI-driven products.
What You'll Be Doing:

• Designing and building the core AI platform that supports LLMs, agents, and other AI systems.
• Developing APIs, SDKs, and orchestration tooling that help product / data teams consume AI capabilities at scale.
• Automating infrastructure / model deployments using Kubernetes, Terraform, and CI/CD pipelines.
• Building and managing vector databases and retrieval systems to support RAG pipelines.
• Working with LLM frameworks like LangChain, LangGraph, CrewAI, or similar tools.
• Partnering closely with engineering, security, and product teams to deliver safe, production-ready AI systems.

What They're Looking For:

• Strong background in Software or Platform Engineering - ideally with Python, Java or Go.
• Experience with Kubernetes, Terraform, and cloud environments (GCP preferred).
• Understanding of microservices, distributed systems, and cloud-native architecture.
• Interest or experience in AI infrastructure, LLM tooling, or AI platform enablement.
• A collaborative engineer who enjoys problem-solving and contributing to technical direction.

If you're interested in helping build real AI infrastructure within a fast-moving, product-led business that's making a visible impact across the UK - get in touch to find out more.
Senior Software / Platform Engineer (LLM / AI Interest) | Brand new AI Platform
Burns Sheehan Ltd will consider applications based only on skills and ability and will not discriminate on any grounds.

Skills Required