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# Principal Developer

- **Company:** Spectrum IT Recruitment
- **Location:** Southampton, UK (Remote available)
- **Salary:** £70,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Microsoft Azure, Cloud Computing, Continuous Integration, Linux, DevOps, Elasticsearch, Java Virtual Machine (JVM), PostgreSQL, MongoDB, NoSQL, RabbitMQ, Redis, Ruby, Standard Sql, SQL Databases, TypeScript, ReactJS, Spring-boot, Backend, Git, Kotlin, Event Driven Architecture, AngularJS, Kubernetes, Restful APIs, Docker, Programming Languages, Microservices
- **Published:** August 20, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5849542238

## About the Role

* Strong experience with Java or Kotlin on JVM 11+
 * Strong experience with Spring Boot
 * Strong experience in enterprise backend development
 * Strong experience with REST APIs and microservices
 * Strong experience with SQL and NoSQL databases
 * Strong experience with Docker and Kubernetes
 * Strong experience with Git and modern development practices
 * Comfortable operating at Principal level, making technical decisions, solving complex problems, and helping other engineers develop
 * Desirable experience with telecommunications billing
 * Desirable experience with Azure
 * Desirable experience with CI/CD
 * Desirable experience with Linux
 * Desirable experience with Redis
 * Desirable experience with Elasticsearch or additional programming languages

## Description

* Stay hands-on with around 90% of the role focused on backend development
 * Work on a large platform with high-throughput APIs, Azure Cloud, and an event-driven architecture
 * Help shape technical direction, engineering standards, and architecture
 * Mentor other engineers
 * Evaluate new technologies
 * Work closely with customers and stakeholders to turn requirements into robust technical solutions

Technologies:

 * Azure
 * Backend
 * CI/CD
 * Cloud
 * Docker
 * ElasticSearch
 * Git
 * JVM
 * Java
 * Kotlin
 * Kubernetes
 * Linux
 * NoSQL
 * REST
 * Redis
 * SQL
 * Spring
 * Spring Boot
 * microservices
 * Angular
 * DevOps
 * MongoDB
 * PostgreSQL
 * RabbitMQ
 * React
 * Ruby
 * TypeScript

More:

We are a growing business within the telecommunications and online payments space, working on a large, high-throughput platform. This is a remote-first Principal Software Developer role based around our Newbury office, with only 2-3 visits per year expected, though you are welcome to spend more time there if you prefer. You will join our 16-person R&D development team, made up largely of senior engineers, and benefit from monthly and quarterly all-hands events including summer and Christmas gatherings. Our benefits include 24 days holiday plus your birthday off, private medical cover, life assurance, critical illness cover, an employee assistance programme, and a contributory pension.


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