Client Our client is a British bank one of the largest finance companies in the world The bank was founded three centuries ago and today its assets are estimated at trillions of US dollars Project overview DataArt s experts together with developers on the client s side are creating new banking apps and upgrading the old ones using the latest technology In particular our team is now developing a new digital portal which streamlines and automates the loan and lease management process Position overview We are looking for a skilled Full-Stack Software Engineer to enhance applications with generative AI capabilities You will integrate LLMs via Amazon Bedrock or Snowflake Cortex using Python FastAPI and build advanced RAG features prompt chaining and streaming AI responses into React UIs Responsibilities Design develop and maintain Python backend services using FastAPI Integrate large language models LLMs into applications for AI-driven features Build scalable React js frontends with functional components hooks and performance optimizations Implement retrieval-augmented generation RAG patterns and streaming AI responses Develop and consume REST and GraphQL APIs including real-time features Ensure code quality with testing frameworks such as PyTest and React Testing Library Manage containerized deployments using Docker and orchestration tools like Kubernetes and Helm Apply secure development best practices including OWASP guidelines JWT OIDC authentication rate limiting and input validation Collaborate with cross-functional teams to define and deliver AI-enabled product features 4-9 years of professional development experience Expert-level Python FastAPI essential Django Flask experience welcomed Strong modern JavaScript TypeScript and deep React js expertise functional components hooks context custom hooks performance optimisation Experience building and consuming REST GraphQL APIs and real-time features Solid understanding of testing PyTest Playwright Cypress React Testing Library Containerisation orchestration Docker Kubernetes Helm Secure development practices OWASP JWT OIDC rate limiting input validation Nice to have Hands-on experience integrating LLMs into web applications Amazon Bedrock Snowflake Cortex LangChain LlamaIndex in Python Building RAG-based features vector stores semantic search streaming responses in React Previous work on AI-powered chat assistant interfaces or document intelligence AWS services Lambda API Gateway Step Functions EventBridge Event-driven architecture and Kafka Financial services or regulated workplace experience