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Java / Kotlin Developer

Spectrum It Recruitment LimitedNewbury, West Berkshire🇬🇧United KingdomPosted 2 Sept 2026

Why This Role Stands Out

This remote Principal Java/Kotlin Developer role offers a fantastic opportunity to influence architecture and mentor a talented team while remaining hands-on with high-throughput APIs and Azure Cloud. If you're a seasoned developer eager to shape technical direction and drive innovation in a growing telecommunications and online payments company, this role is a perfect fit for your career growth. Apply today for this exciting position with a competitive salary of up to £70,000.

Quick Overview

Salary
£70k/yr
Seniority
Mid Senior
Employment type
Full Time
Work mode
Remote
Location
Newbury, West Berkshire, United Kingdom
Posted
1 week ago
DockerMicroservicesMongoDBSQLSpringSpring BootAngularAzureGitJavaKotlinKubernetesPostgreSQLRESTRabbitMQReactRedisTypeScript

Job Description

If you're a Principal level Java or Kotlin Developer who wants to stay hands-on while having a genuine influence over architecture, technology and the engineers around you, this is a role worth exploring.
This is an opportunity to take a leading technical role on a large, high-throughput platform within the telecommunications and online payments space.

Java / Kotlin Software Developer
Remote | Up to £70,000 | Newbury

The Role
This is a hands-on Principal role, with around 90% of your work focused on backend development. You'll be working on a large platform with high-throughput APIs, Azure Cloud and an event-driven architecture.

The business is growing and the volume of work is increasing, so they're looking for a Principal Software Developer to join a 16-person R&D development team, made up largely of senior engineers.

The core technology stack includes:

  • Java/Kotlin and Spring Boot
  • PostgreSQL and MongoDB
  • Microservices and event-driven architecture
  • RabbitMQ, Docker and Kubernetes
  • Azure Cloud
  • TypeScript, React and Angular


You'll remain close to the code while also helping shape technical direction, engineering standards and architecture. You'll mentor other engineers, evaluate new technologies and work closely with customers and stakeholders to turn requirements into robust technical solutions.

What We're Looking For

You'll need strong experience with:

  • Java or Kotlin on JVM 11+
  • Spring Boot
  • Enterprise backend development
  • REST APIs and microservices
  • SQL and NoSQL databases
  • Docker/Kubernetes
  • Git and modern development practices


Desirable:

  • Telecommunications billing
  • Azure
  • CI/CD
  • Linux
  • Redis
  • Elasticsearch or additional programming languages


You should also be comfortable operating at Principal level, making technical decisions, solving complex problems and helping other engineers develop.

Working Arrangements & Benefits

This is a remote-first role. The minimum expectation is around 2-3 visits per year to the Newbury office, although you're welcome to spend more time there if you prefer.
The business also runs monthly and quarterly all-hands events, including summer and Christmas gatherings.

  • 24 days' holiday plus your birthday off
  • Private medical
  • Life assurance
  • Critical illness cover
  • Employee assistance programme
  • Contributory pension


Apply now or contact Chris Lynes at Spectrum IT Recruitment to find out more.

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.


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