Gen AI Developer

Exp- 7-10 yr Notice- Imm to 30 days JD - Below Mode: Contract and Permanent Location: London Overview Job Description: We are seeking an experienced GenAI Developer to develop core services, features and capabilities on an enterprise-grade Generative AI Platform for a large global insurer. This role blends strong Python engineering with DevOps enablement and hands-on integration of LLM technologies into secure, scalable enterprise environments. The ideal candidate will bring practical GenAI development experience, strong automation skills, and the curiosity to solve emerging engineering challenges in this rapidly evolving space. Key Responsibilities • Build and maintain backend services and APIs enabling secure access to LLM capabilities. • Develop and optimise Python-based GenAI components including prompt orchestration, output validation, and evaluation tooling. • Integrate LLMs with enterprise systems, observability, and security frameworks. • Design and maintain CI/CD pipelines aligned to engineering standards (Azure DevOps primarily). • Collaborate closely with platform leads, architects, and SRE teams to ensure reliable operationalisation of GenAI services. • Support benchmarking, evaluation, and experiment tracking for LLM performance and cost. • Contribute to RAG implementations and data access patterns supporting enterprise use cases. • Help shape API standards, reusable patterns, and documentation for platform adoption. • Troubleshoot and optimise performance across distributed systems and cloud services. Mandatory Skills & Experience • Strong Python backend engineering in production systems (Python, Node.js, and associated frameworks like Django, Spring). • Working knowledge of GenAI technologies and Large Language Models. • Experience evaluating LLM performance and prompt handling complexities. • Solid DevOps mindset with CI/CD expertise and observability best practices (Azure DevOps preferred). • Comfortable working in regulated enterprise environments with strict security controls. • Experience integrating AI services into real-world apps or workflows. • Knowledge of authentication, secret management, network boundaries, and model access governance Preferred Skills • Kong API Gateway, Kong Mesh, Flux CD. • AWS services: EC2, EKS, S3, SQS, DynamoDB, Bedrock. • RESTful API development (FastAPI preferred), microservices, Terraform with GitOps workflows. • Prompt evaluation tools (like Promptfoo). • Experience with SQL (MySQL, PostgreSQL) and NoSQL (MongoDB, Cassandra) databases • Exposure to RAG patterns and vector search technologies. Behavioural Competencies • Proactive self-starter who identifies gaps and drives solutions without waiting for tickets. • Comfortable working in ambiguous emerging domains where best practice is evolving. • Collaborative communicator able to influence and gain trust across engineering, data, and product teams. • Curiosity to explore and adopt new GenAI techniques in a structured, secure way. • Bias toward automating everything to reduce toil and accelerate delivery. What Success Looks Like • Efficient, secure, and reusable GenAI components delivered into production. • Improved engineering velocity through automation and DevOps best practices. • Stable services, with observability and evaluation built in from day one. • Platform teams and application teams love using what you build. • Clear documentation and fast onboarding for future use cases.