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Software Engineer, Java Developer, Full Stack Developer

Job in Portsmouth, Hampshire County, PO1 1DS, England, UK
Listing for: Certain Advantage
Part Time, Contract position
Listed on 2026-02-09
Job specializations:
  • Software Development
    Software Engineer, Java Developer, Full Stack Developer, Cloud Engineer - Software
Job Description & How to Apply Below
Software Engineer (Java)
SC Clearance Required

Certain Advantage are hiring for a Software Engineer based in Portsmouth.

This role is on an initial 12-month contract and is required to be onsite 3 days a week.

Your responsibilities:

Contribute across the full software development lifecycle, including design, development, testing, and deployment.
Design software solutions using UML/SysML and contribute to technical architecture within a microservices environment.
Develop high-quality Java applications using Spring Boot, Spring Framework and related technologies.
Implement and maintain RESTful web services over HTTPS within distributed systems.
Write and maintain automated tests, ensuring quality and reliability are built into the solution from the outset.
Participate in Agile ceremonies including sprint planning, estimation, reviews and retrospectives.
Collaborate closely with team members and wider stakeholders to design, implement and test new product features.
Contribute to CI/CD pipelines, source control (Git) and issue tracking tools such as Jira.
Ensure compliance awareness and act with integrity, supporting standards, reputation and sustainable growth.
The individual:

Java Core (version 8+)
Spring Boot, Spring Framework - Good knowledge of Developing in Spring with Hibernate
Good Knowledge of developing REST within HTTPS

Experience of developing within a microservice architecture
Distributed systems
Knowledge and use of software design patterns
Agile Development Processes
CI/CD delivery techniques
Source code management (we use GIT)
Use of Issue tracking systems (such as Jira)
UML/SysML using Enterprise Architect or similar
Ability to self-motivate and to work well within a team environment.
Ability to promote innovation in self and others
Ability to interact with internal & external stakeholders in a confident and professional manner
Does this sound like your next career move? Apply today.

Working with Certain Advantage
We go the extra mile to find the best people for the job. If you’re hunting for a role where you can make an impact and grow your career, we’ll work with you to find it.
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