Senior Engineer: Java

Location: Greater London, England, United Kingdom

IG Group is a FTSE
250 Fin Tech company that operates mobile, web, and desktop platforms for trading stocks, leveraged products, Futures & Options and Crypto.

We are looking for a senior Java engineer to help build modern, scalable software solutions and integrate AI throughout the development lifecycle.

• Design and implement scalable microservices with an API‑first mindset.
• Develop RESTful and Graph
  
  QL APIs with comprehensive documentation.
• Build cloud‑native applications using modern architecture patterns.
• Deliver well‑tested, production‑grade code with CI/CD automation.
• Ship features quickly by leveraging AI tools for code generation, refactoring, testing, documentation and debugging.
• Use AI for all coding tasks: feature implementation, refactoring, test creation, documentation, debugging.
• Employ Claude Code, Git Hub Copilot, LLM APIs and other AI assistants to write better code faster.
• Apply AI‑assisted code analysis, optimisation and security scanning.
• Integrate AI into CI/CD pipelines for automated code review, testing and deployment.
• Document patterns and share learnings about AI‑first development.
• Mentor team members on effective AI tool usage and prompt engineering.
• Measure and communicate productivity gains from AI integration.

• 5–10 years’ experience in software engineering with strong backend expertise.
• Proficiency in Java (required) and experience with Python, Node.js, Go or similar.
• Experience building and deploying production systems at scale.
• Strong understanding of software design patterns, SOLID principles and API design principles.
• Experience with cloud platforms (AWS, Azure, or GCP) and containerization (Docker) and orchestration (Kubernetes).
• Experience with event‑driven architectures, message queues and service mesh.
• Hands‑on experience with Model Context Protocol (MCP) or similar AI frameworks.
• Demonstrated use of Claude Code, Git Hub Copilot or similar AI development tools in production.
• Experience implementing AI in CI/CD pipelines (code review, testing, security scanning).
• Track record of producing measurable productivity improvements (2–5×) through AI tools.
• Knowledge of prompt engineering, model selection and LLM capabilities/limitations.
• Strong proficiency in at least one backend language and microservices framework (Spring Boot, Express, FastAPI, etc.).
• Database expertise (SQL and No
  
  SQL), API documentation tools (Swagger/OpenAPI, Postman), version control (Git) and CI/CD platforms (Git Hub Actions, Jenkins, Git Lab CI).
• Experience with observability tools.

• Lead and inspire:
  Drive trust, alignment and enthusiasm.
• Think big:
  Focus on problems that impact commercial outcomes.
• Champion the client:
  Understand and prioritise client needs.
• Deliver at pace:
  Push for fast, sustainable growth.
• Raise the bar:
  Own work, be accountable and share feedback.

• Competitive salary.
• Flexible benefits package (12% on top of salary).
• Private medical cover for you and your family.
• Life insurance.
• Gym membership contribution.
• 25 days holiday plus 1 birthday day and 2 days for voluntary work (28 total).
• Option to buy or sell holiday days.
• Unlimited Linked In Learning access.
• Comprehensive local and global onboarding.
• Employee‑led inclusive networks with annual budgets for events.
• Participation in ESG initiatives.
• Enhanced parental benefits and support.

We believe diversity is vital to success and encourage applications from people with diverse backgrounds and experiences.

Apply now for one opening.