Fullstack AI Developer (Java/Python) - Investment Bank
Join a high-profile greenfield initiative within a globally recognised financial institution, building next-generation research and data platforms powered by cloud-native engineering and AI.This is an opportunity to work on a cutting-edge programme delivering scalable, AI-driven solutions across modern AWS infrastructure, React front ends, and advanced LLM/RAG workflows.
London-based | 5 days onsite 12-month contract + likely extension £600-£800 per day (PAYE) Join a high-profile greenfield initiative within a globally recognised financial institution, building next-generation research and data platforms powered by cloud-native engineering and AI.This is an opportunity to work on a cutting-edge programme delivering scalable, AI-driven solutions across modern AWS infrastructure, React front ends, and advanced LLM/RAG workflows.What you'll be doing
- Building and enhancing cloud-native applications using Java and/or Python
- Developing modern React front-end solutions
- Designing scalable systems on AWS
- Delivering AI-powered features using LLMs, semantic search, and RAG architectures
- Driving engineering best practices across CI/CD, DevOps, testing, and system reliability
- Collaborating with senior engineering and product stakeholders on a flagship transformation programme
What we're looking for
- 8+ years' software engineering experience
- Strong hands-on experience with Java and/or Python
- Proven expertise with AWS cloud technologies
- Full stack engineering capability, ideally including React
- Experience building secure, production-grade distributed systems
- Strong understanding of modern SDLC, CI/CD, and cloud-native development
- Exposure to AI/ML solutions, particularly LLMs, OpenAI/Claude, or RAG frameworks, is highly desirable
- Background in banking, fintech, or asset management preferred
Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates