London, Greater London | £100k - £120k per year
Principal Backend Engineer / Developer (Java Spring Boot AWS) London / WFH to £120k
Are you an experienced Java Software Engineer who enjoys taking technical ownership, leading projects and working directly with clients?
You could be progressing your career at a global technology consultancy, working on complex, long-term transformation projects, primarily within the financial services sector.
As a Principal Backend Engineer, you'll lead the design and delivery of high impact technology projects, helping clients modernise legacy systems, migrate to AWS and introduce modern CI/CD and cloud deployment practices. You'll combine hands‑on engineering with technical leadership, problem solving and client engagement.
You'll work alongside a highly collaborative team focused on engineering excellence, continuous improvement and delivering meaningful outcomes for clients.
What you'll be doing:
- Leading technical projects and client engagements from design through to delivery
- Developing scalable Java applications using Spring Boot and microservices
- Modernising and migrating legacy systems to AWS
- Designing and working with REST APIs and distributed systems
- Introducing and improving CI/CD and DevOps practices
- Providing technical expertise and guidance to clients and engineering teams
Location / WFH:
There's a hybrid work from home policy with three days a week in the London, City office (or at client sites), you'll join a friendly, diverse, upbeat team.
About you:
- You have experience within a financial services or Fintech environment
- You have strong Java development skills including multi-threading and concurrency
- You have experience with Spring Boot and microservices environments
- You have a good knowledge of REST APIs
- You have a good understanding of AWS
- You have a thorough understanding of software development and Computer Science fundamentals such as Object Oriented Programming, Data Structures and Design Patterns
- You are familiar with DevOps, CI/CD pipelines
- You're collaborative, enjoy problem solving and interacting with clients
What's in it for you:
As a Principal Backend Engineer / Developer you will earn a highly competitive package:
- Salary to £120k
- Pension, Life Assurance, Income Protection
- Private medical care for you and your family, including mental health
- Travel Insurance
- Charitable giving
- Gym membership for you and your family
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Principal Backend Engineer Java Spring Boot AWS employer: Client Server Ltd.
Join a dynamic tech start-up in London, where you'll not only advance your career as a Senior Backend Software Engineer but also play a pivotal role in shaping the future of AI-driven data solutions. With a competitive salary of up to £120k, flexible work-from-home options, and a culture that fosters collaboration and innovation, this is an exceptional opportunity for those looking to make a meaningful impact while enjoying significant growth potential in a supportive environment.
