GenAI Python Developer x4

GenAI Python Developers x4

Location: Hybrid/London

Available as permanent or contract:

Contract Rate: £450–£500 per day (Inside IR35, initial 6-9 months)

Permanent Salary: £65k–£75k per annum

GenAI Python Enterprise AI Platform - Build the core of a next-gen Generative AI ecosystem for a global finance services business.

If you’re a strong Python engineer who’s genuinely excited by the possibilities of GenAI in real enterprise environments, this is a brilliant opportunity. You’ll be working on a large-scale Generative AI platform that’s reshaping how a major global finance services business builds, deploys, and adopts AI across the business.

Expect hands-on engineering, real problem solving, and plenty of collaboration as you help architect, automate, and operationalise LLM-driven services at scale.

What You’ll Be Doing:

Building backend services and APIs that give secure, governed access to LLM capabilities

Developing Python-based GenAI components, including prompt orchestration and evaluation tooling

Integrating LLMs with enterprise systems, observability layers, and security frameworks

Designing and maintaining CI/CD pipelines using Azure DevOps

Working closely with platform leads, architects, and SRE teams to ensure stable, scalable operations

Supporting benchmarking, evaluation, and experiment tracking to measure LLM performance and cost

Contributing to RAG implementations and vector-driven retrieval patterns

Helping shape platform patterns, reusable components, and clear documentation

Troubleshooting performance issues across distributed systems and cloud services

What You’ll Bring:

5+ years of backend engineering experience, with strong Python at the core

Hands-on exposure to GenAI technologies and Large Language Models

Practical understanding of LLM evaluation, prompt handling, and operational complexities

A DevOps-first approach with experience in CI/CD, observability, and automation (Azure DevOps preferred)

Confidence working in regulated enterprise environments with tight security controls

Experience integrating AI or ML services into real-world applications

Knowledge of authentication, secret management, networking, and model access governance

Bonus Points For:

Kong API Gateway, Kong Mesh, Flux CD

AWS stack: EC2, EKS, S3, SQS, DynamoDB, Bedrock

RESTful API development with FastAPI, microservices, Terraform, GitOps workflows

Prompt evaluation tools such as Promptfoo

SQL and NoSQL experience: MySQL, PostgreSQL, MongoDB, Cassandra

Exposure to RAG patterns and vector search technologies

What Success Looks Like:

Secure, reusable GenAI components running smoothly in production

Faster engineering delivery through automation and DevOps maturity

High observability and strong evaluation built in from day one

Platform teams and application teams genuinely enjoying what you build

Clean documentation and an onboarding flow that makes adoption effortless

Role Details:

Rate: £450–£500 per day Inside IR35, or permanent £65k–£75k salary

If you’re keen to help shape one of the most exciting GenAI platforms in the enterprise world, drop me a message and we can get things moving. Interviews won’t stay open for long.