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# Principal Java Developer - Consultancy

- **Company:** Client Server
- **Location:** London, UK (Remote available)
- **Salary:** £100,000.0 - £120,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Amazon Web Services, Data Structures, Software Design Patterns, DevOps, Object-Oriented Software Development, Cloud Services, Software Engineering, Multithreading, Concurrency, Spring-boot, Restful APIs, Legacy Systems, Microservices
- **Published:** August 7, 2026
- **Apply:** https://www.client-server.com//job/principal-java-developer-consultancy-2/apply

## About the Role

Are you an experienced Java Developer, with technical project leadership and client facing skills?, * 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

## Description

As a Principal Java Developer you will lead client projects, often long term technical transformations, designing, developing and delivering a range of projects for clients, mainly within the financial services sector and with a focus on migrating legacy systems to AWS and introducing CI/CD pipelines and cloud deployments.

You'll join a collaborative team with a focus on engineering best practice and continuous improvement of client systems; you will have lots of business and client exposure, leading projects and providing expertise.


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