GenAI Python Developer x4

GenAI Python Developers x4

Location: Hybrid/London

Available as permanent or contract:

Contract Rate: £400–£450 per day (Inside IR35, initial 6-9 months)

Permanent Salary: £60k–£70k 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: £400–£450 per day Inside IR35, or permanent £60k–£70k 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.