Senior Software Tester – Cardiff

Company: SRT Marine Systems PLC
Apply for the Senior Software Tester – Cardiff
Location: Cardiff
Job Description:

Salary: £40,000 – 50,000 per year

Requirements

  • Strong experience as a software tester or QA engineer
  • Experience testing complex distributed systems or backend platforms
  • Familiarity with tools such as Postman or similar API testing tools
  • Ability to understand system behaviour through logs, messages, and APIs
  • Strong debugging and problem-solving skills
  • Experience working within Agile or Scrum teams
  • Familiarity with Jira or similar issue-tracking tools

Responsibilities

  • Test new features and improvements delivered during sprint cycles
  • Design, implement, and maintain automated tests where appropriate
  • 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
  • Investigate minor non-production environment configuration issues
  • Understand data flows across services

Technologies

  • API
  • Backend
  • JIRA
  • PLC
  • Postman
  • REST
  • Security
  • RabbitMQ

More

We are SRT Marine Systems plc, a respected, established, and ambitious multinational company headquartered in the UK with a global customer base. We lead the next generation of Maritime Domain Awareness technologies, products, and systems that enhance security, safety, environmental protection, and sustainability across the marine sector. This is a hybrid role based from our Cardiff office, with attendance required one day per week as part of the teams working pattern. We offer an exciting, rewarding, and challenging environment where talented, hard-working individuals can make a real impact. We are committed to being an equal opportunity employer and to creating an inclusive working environment for all employees.

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Posted: July 13th, 2026