Software Tester in Portsmouth

About the role

The Tester in Dunstan Thomas plays a hands-on role in executing software tests to ensure DT products and services meet defined requirements, function correctly, and comply with regulatory and operational standards. Operating primarily at SFIA level 3, the Tester contributes to functional, process, and user acceptance testing under the guidance of senior QA professionals. They are responsible for identifying defects, validating fixes, and maintaining quality documentation throughout the software lifecycle. This role is ideal for individuals who combine strong attention to detail with a willingness to learn, collaborate, and uphold quality in a fast-moving, regulated fintech environment.

Typical Job Responsibilities

• Test Preparation & Execution: Prepare and execute functional test cases according to defined requirements and acceptance criteria.
• Identify, log, and retest software defects, ensuring they are reproducible and clearly documented.
• Participate in regression, integration, and user acceptance testing for DT applications and platforms.

• Quality Assurance Support: Apply established QA standards, checklists, and procedures throughout the software development lifecycle.
• Contribute to quality reviews, test readiness assessments, and retrospectives.
• Provide feedback to improve test coverage, documentation, and process consistency.

• Collaboration & Communication: Work closely with developers, business analysts, and product owners to clarify requirements and acceptance criteria.
• Support user acceptance testing by coordinating with business users and helping to validate test outcomes.
• Communicate clearly about test progress, issues, and risks to the Test Lead or Senior Tester.

• Tools & Methods: Use approved testing tools for test management, defect tracking, and documentation (e.g., DevOps and Jira).
• Apply manual or basic automated testing techniques as directed.
• Contribute to maintaining test environments and test data sets.

• Process Testing: Execute process and workflow-based test cases to ensure system functionality aligns with business operations.
• Verify data integrity and transaction flows typical in fintech applications (e.g., payments, reconciliations, onboarding).

Expected Professional Behaviours

• Attention to Detail: Demonstrates accuracy and thoroughness when designing or executing tests.
• Accountability: Takes responsibility for assigned tasks and ensures deliverables meet quality expectations.
• Collaboration: Works effectively as part of a cross-functional team, contributing to shared testing goals.
• Proactivity: Escalates issues promptly and suggests improvements where appropriate.
• Learning Orientation: Seeks feedback and actively develops technical and domain knowledge.
• Integrity: Handles sensitive financial and customer data responsibly and in accordance with regulatory standards.
• Adaptability: Responds positively to change, new tools, and agile delivery methods.

SFIA Skill Mapping

Code | Skill | Level | Description Summary
TEST | Functional Testing | 3 | Designs and executes test cases under guidance, ensuring functional coverage and defect identification.

QUAS | Quality Assurance | 3 | Follows established quality standards and contributes to continuous improvement of testing processes.

USEV | User Experience Evaluation | 2 | Supports usability testing and contributes observations on user interface consistency.

BURM | Risk Management | 2 | Identifies basic quality and operational risks and escalates them appropriately.

BPTS | User Acceptance Testing | 3 | Supports and executes UAT activities with business stakeholders.

METL | Methods and Tools | 2 | Uses approved testing tools, methods, and environments with supervision.

PRTS | Process Testing | 3 | Executes test cases that validate business workflows and operational processes.

Your Commitment

• Take responsibility in everything you do to deliver good outcomes for our customers.
• Positively demonstrate the Nucleus values and behaviours
• Ensure compliance with the Code of Conduct at all times.

A little about us

We are the Nucleus Group Services Limited and we help make retirement more rewarding. Here at Nucleus, people come first – whether it’s our colleagues, or the advisers and customers we support, we know that working in partnership and collaboration leads to the best outcomes. Together, we’ve shaped the platform to how it is today. We work hard, and we celebrate hard too.

Our ambition is to create a platform with a difference, putting the customer centre stage meant tearing up the rule book and starting from scratch. We’ve come a long way since then, but our mission remains just as focused. That’s why our culture, values, and social responsibility are things we keep at the top of our agenda – because we know they matter and have a big impact.

Our culture is one of the many things that sets us apart from the pack. We want to have an environment where our people feel that they can make a real difference, know they’ll be rewarded for their efforts and more importantly, enjoy themselves at work.

Are we a perfect match? Check out this video and find out!

Inclusion and diversity at Nucleus

As with most things in life, who cares, wins. We really care about inclusion. For us it’s not a tick box exercise; inclusion and diversity are embedded in our culture and everything we do. It’s a commercial imperative. It isn’t about being PC. It’s about being future-relevant and durable. We owe it to ourselves and the industry to ensure we are playing our part in creating a fair, balanced and transparent financial services sector.

More diversity means broader experience, a wider set of perspectives and a better collective ability to problem-solve. And it means being more representative of customer groups, which supports areas such as product development.

At Nucleus, we offer a generous blend of benefits for the things that really matter to our people, including a non-contributory pension, bonus, enhanced parental leave, paid time off for emergencies, health and wellbeing initiatives and flexible working options.

If you’d like to find out more about us or the role, please get in touch with our recruitment team.