Senior Software Engineer

Senior Software Engineer – Polaris Squad, Product Experiences Domain

You will report into a Software Engineering Manager for the Polaris squad in the Product Experiences Domain. You'll collaborate with your Product Manager, Engineering Team Lead, Delivery Manager and engineering colleagues to produce experiences that drive customer-value.

We are currently re‑imagining our product engineering practices, and you'll have an opportunity to inform our direction. We have an exciting, ambitious vision and we need your help to shape and fulfil our goals. We are evolving into a Product Operating Model, shifting from an IT mindset to a product‑driven culture that focuses on solving real customer problems and delivering tangible business outcomes.

As part of this transformation, we are building a cutting‑edge analytics platform that will enable businesses to harness the power of predictive intelligence and sustainability‑focused analytics.

We're looking for a Senior Software Engineer who is a deep expert in Node.js, NestJS and Type Script—someone who brings architectural confidence and engineering rigour to backend systems, but who is also keen to contribute across the stack, from frontend to infrastructure.

• Build and maintain robust RESTful APIs and event‑driven systems (Node.js, NestJS, Kafka) with Type Script at the core
• Set and raise the bar for backend engineering quality across the team—championing type safety, clean architecture and testability
• Lead the design and implementation of SLIs and SLOs to better understand our services (Grafana)
• Contribute to complex user interfaces and web applications (React)
• Lead CI/CD pipeline strategy and optimisation in collaboration with your team (Git Lab)
• Perform thorough code reviews and provide constructive, growth‑focused feedback
• Mentor and support the development of more junior engineers
• Be responsible for the health and reliability of your services
• Continuously grow yourself and contribute to team development

• Deep, production‑proven expertise in Node.js, NestJS and Type Script
• Strong understanding of Type Script at an architectural level: generics, decorators, dependency injection patterns and type system design
• Experience implementing asynchronous processing and messaging systems (e.g., Kafka, Rabbit
  
  MQ, SQS)
• Experience designing and building REST APIs that are maintainable, observable and performant
• Experience building, optimising and maintaining production applications end‑to‑end
• Experience with Postgre
  
  SQL, including query optimisation and performance tuning

• Experience with microfront ends and component communication
• Experience implementing frontend frameworks (React)
• Handling data migration and transformation processes
• Knowledge of CI/CD pipeline integration (Git Lab)
• Familiarity with projects involving LLMs or Machine Learning

• Applies technical excellence; produces quality, optimised, type‑safe solutions
• Implements engineering practices; handles requirements, design, testing and metrics
• Executes plans; develops and tests through iterative and measurable changes
• Manages delivery; breaks down problems and communicates progress regularly
• Implements user‑centred thinking; crafts accessible interfaces for diverse users
• Collaborates cross‑functionally; works effectively with product, design and participates in agile ceremonies
• Partners with Product; translates business requirements into technical solutions
• Manages technical debt; makes informed decisions about refactoring
• Demonstrates practical thinking; evaluates trade‑offs and contributes to prioritisation
• Shows adaptability; adopts alternative approaches when needed
• Communicates effectively; documents decisions and explains technical concepts clearly
• Focuses on growth; pursues continuous learning while actively supporting team members

• 25 days holiday
• Buy up to 5 days additional holiday
• Birthday Day off
• Enhanced Maternity/Paternity Leave
• Group Company Pension Scheme
• Private Medical Insurance
• Discounted gym membership at over 3,000 gyms
• Dental cover
• Optical cover
• Company Sick Pay Scheme
• Cycle to work scheme
• Onsite parking
• Onsite gym
• Access to a variety of online discounts on major retailers
• Employee assistance program

If you require reasonable accommodation during the application and selection process, please let us know. We will work together to best meet your needs.