Senior Engineer: Java

IG Group; City of London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading financial technology company in London is seeking an experienced Software Engineer to build and support microservices and APIs integrated with AI-driven tools. Candidates should have extensive experience in backend development, strong programming skills, and familiarity with cloud platforms. This role offers competitive compensation and a flexible benefits package, fostering an inclusive work environment.

Benefits

Competitive salary

Flexible benefits package (12%)

Private medical cover

Life insurance

Contribution to gym memberships

25 days holiday, plus extra days for birthday and volunteering

Unlimited access to LinkedIn Learning

Enhanced parental pay and leave

Qualifications

• 5-10 years of software engineering experience with strong backend expertise.
• Proficiency in modern programming languages like Java, Python, Node.js, or Go.
• Experience building and deploying production systems at scale.

Responsibilities

• Implement and support AI-driven development tools to improve coding productivity.
• Design and maintain scalable microservices and APIs.
• Utilize cloud platforms for deployment and operation of production systems.

Skills

Software engineering

Backend development

AI integration

Cloud platforms

Microservices architecture

API design

Containerization

Event-driven architecture

Git

Database expertise

Job description

* Use AI for all coding tasks: feature implementation, refactoring, test creation, documentation, debugging* Employ Claude Code, GitHub Copilot, and LLM APIs to write better code faster* Apply AI-assisted code analysis, optimization, and security scanning* Achieve measurable and significant productivity improvements through AI integration* Demonstrate when to use AI vs when human judgment is critical* Design clean, versioned APIs that prioritize developer experience* Implement event-driven architectures and asynchronous communication patterns* Build loosely coupled microservices with clear boundaries* Apply domain-driven design principles and service decomposition strategies* Create comprehensive API documentation and developer guides* 5-10 years of software engineering experience with strong backend expertise* Proficiency in modern programming languages (Java, Python, Node.js, Go, or similar)* Experience building and deploying production systems at scale* Strong understanding of software design patterns and SOLID principles* Experience with cloud platforms (AWS, Azure, or GCP)* Deep knowledge of API design principles and RESTful/GraphQL patterns* Hands-on experience building and scaling microservices architectures* Understanding of service mesh, API gateways, and inter-service communication* Experience with containerization (Docker) and orchestration (Kubernetes)* Knowledge of event-driven architectures and message queues* Hands-on experience with Model Context Protocol (MCP) or similar AI frameworks in helping deliver faster and better* Demonstrated use of Claude Code, GitHub Copilot, or similar AI development tools in production work* Experience implementing AI in CI/CD pipelines (code review, testing, security scanning)* Built agentic AI solutions or AI-powered automation tools* Understanding of prompt engineering, model selection, and LLM capabilities/limitations* Achieved measurable productivity improvements (2-5x) using AI in development* Implemented AI-assisted refactoring, test generation, or documentation at scale* Experience with AI code analysis and automated code quality improvements* Track record of shipping production systems built with significant AI assistance* Strong proficiency in at least one backend language (Java, Python, Node.js, Go)* Experience with microservices frameworks (Spring Boot, Express, FastAPI, etc.)* Database expertise (SQL and NoSQL)* API design and documentation tools (Swagger/OpenAPI, Postman)* Version control (Git) and CI/CD platforms (GitHub Actions, Jenkins, GitLab CI)* AI coding assistants (Claude Code, GitHub Copilot, Cursor, or similar)* Usage of observability tools.* Competitive salary* Flexible Benefits Package on top of your salary (12%)* Private medical cover for you and your family* Life insurance* Contribution to gym memberships* 25 Days holiday, with 1 additional day off to celebrate your Birthday & 2 additional days off a year for voluntary work (28 in total* The option to buy or sell holiday days.* Unlimited access to the LinkedIn Learning Platform* A comprehensive global and local onboarding process* Employee-led LGBTQ+, Women’s, Black and Parents & Carers networks with an annual budget for organising events & projects that foster an open, diverse and inclusive culture* Option to participate and create ESG initiatives based on IG Brighter Future Fund* Enhanced primary (maternity), secondary (paternity), and shared parental pay and leave, as well as a range of support and benefits for parents