Principal Backend Engineer Java Spring Boot AWS

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:

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

Flexible holiday scheme

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