Senior Software Tester

SRT Marine Systems plc (SRT) is a market leader in the domain of international marine surveillance technology and systems. We are a respected, established, and an ambitious multi-national company headquartered in the UK with a global customer base.

The company has a worldwide impact in the marine sector by leading the next generation of Maritime Domain Awareness technologies “MDA”, products, and systems that significantly enhance security, safety, environmental protection, and sustainability. Our customers are global and range from the largest national coast guards to individual vessel owners.

SRT is an exciting company where high-quality results are rewarded. We are ambitious and constantly seek to innovate in order to deliver better products and services to our customers. We strive to make SRT a rewarding and challenging place to work, where talented, hard-working individuals have the opportunity to make a real impact across the marine industry.

Role overview of our Senior Software Tester

As a Senior Software Tester you will work on the continued build of our Marine Domain Awareness (MDA) platform which is used to create an operational picture of maritime activity. Our systems ingest large volumes of streaming data from both satellite and terrestrial, along with other sensor sources. You will play a key role in validating the behaviour of a distributed, event-driven system operating on real-time maritime data. Testing activities include both automation and manual testing.

The role of Senior Software Tester role is a hybrid working position based from our Cardiff office, you will be required to attend office 1 day per week as per the team’s requirements.

How We Work

• Sprint Work
  • Development tickets move across the Jira board through the delivery workflow
  • Tickets reaching the Test stage are assigned to a tester
  • Testers validate functionality using a mix of automated and manual testing approaches
  • QA Release Cycles
• Every six weeks, we conduct a dedicated two-week QA phase where:
  • Testers pause normal sprint board work
  • The focus shifts to release-wide regression testing
  • Both manual and automated test suites are executed to validate the full platform

Senior Software Tester - Responsibilities (not exhaustive):

• Test new features and improvements delivered during sprint cycles
• Design, implement, and maintain automated tests, along with the execution of  manual exploratory and regression testing when required
• Validate message-driven workflows across distributed services
• Test REST API endpoints supporting CRUD operations within the system
• Participate in release regression cycles and help validate production-ready builds
• Investigate issues, reproduce defects, and provide clear bug reports
• Work closely with developers and product teams to clarify requirements and ensure testability

Senior Software Tester - Required Skills and Experience

• Strong experience as a software tester or QA engineer
• Experience testing complex distributed systems or backend platforms
• Experience creating automated tests
• Familiarity with tools such as Postman (or similar API testing tools)
• Ability to write test scripts using one or more scripting languages (e.g. Python, JavaScript, Bash)
• Ability to understand system behaviour through logs, messages, and APIs
• Strong debugging and problem-solving skills
• Experience working within Agile / Scrum teams
• Familiarity with Jira or similar issue-tracking tools

Company Benefits

• Highly Competitive Salary and Pension
• Hybrid Working
• Development opportunities

SRT Marine Systems plc are an equal opportunity employer. We are committed to creating an inclusive working environment for all employees and actively encourage applications from all sectors of the community.