Principal Full Stack Engineer

Salary: £80,000 - 80,000 per year

Requirements:

• Strong experience working across the stack, from designing scalable back-end systems to developing responsive front-end applications
• Comfortable working with Java, Spring Boot, and the Java ecosystem/JVM
• Ability to architect and design complex, distributed systems that are scalable, maintainable, and performant
• Experience with modern front-end technologies such as React or Angular, TypeScript, and modern JavaScript
• Proficiency in building RESTful APIs and web services
• Strong knowledge of relational databases (SQL) and experience with document-based storage solutions such as MongoDB
• Experience with Kafka or other event-driven architectures
• A structured approach to development and testing, including Test-Driven Development, with a focus on continuous delivery and automation
• Proven experience leading and mentoring teams, helping others grow technically while delivering high-impact projects

Responsibilities:

• Join our team as a Principal Full Stack Engineer
• Drive system design and architecture decisions
• Mentor team members and help our teams deliver high-quality solutions at scale
• Work across our technology stack to meet the needs of our users
• Collaborate through pair programming, code reviews, and stand-ups
• Contribute to a close-knit tech community built on collaboration and knowledge sharing
• Help deliver complex systems across our platform

Technologies:

• Angular
• Architect
• Cloud
• Support
• JVM
• Java
• JavaScript
• Kafka
• MongoDB
• React
• SQL
• Spring
• Spring Boot
• TypeScript
• Web
• Fullstack

More:

We are Autotrader, the UKs most trusted and most visited automotive marketplace, bringing together vehicle buyers and sellers to give them real choice. We are a heritage brand and tech innovator working across cars and everything else on wheels, from e-bikes to caravans. Our technology teams support millions of requests a day across over 600 systems, using tools and frameworks such as React, Angular, Java, Spring Boot, Cloud SQL, and Apache Kafka on a cloud delivery platform that supports over 60,000 production releases each year. We offer a salary of £60,000 to £80,000, plus 10% of salary in shares annually, 28 days holiday plus bank holidays, private medical cover, pension contributions, enhanced family leave, a car salary sacrifice scheme, share-save options, and wellbeing support including 24/7 online GP and dentist access. We work in a hybrid Connected Working model, with a minimum of 3 days a week in the office with our team, plus set remote-first periods during summer and winter when you can work remotely anywhere in the UK and from certain locations abroad.

last updated 39 week of 2026