Manual Software Tester; ISTQB Certified

Resillion is a global provider of digital assurance, cybersecurity, and testing services. We help organisations strengthen their security posture, protect critical assets, and deliver high-quality digital solutions. Our teams operate across multiple specialist disciplines, including Digital Forensics, Incident Response, SOC Operations, Quality & Compliance, and Technical Consultancy. We are committed to excellence, continuous improvement, and delivering trusted, customer-focused services that meet the highest professional and accreditation standards.

Resillion is a global provider of digital assurance, cybersecurity, and testing services. We help organisations strengthen their security posture, protect critical assets, and deliver high-quality digital solutions. Our teams operate across multiple specialist disciplines, including Digital Forensics, Incident Response, SOC Operations, Quality & Compliance, and Technical Consultancy. We are committed to excellence, continuous improvement, and delivering trusted, customer-focused services that meet the highest professional and accreditation standards.

• PLEASE NOTE – DUE TO BACKGROUND CHECKS, WE CAN ONLY ACCEPT APPLICANTS WHO HAVE AT LEAST 3 YEARS UK ADDRESS HISTORY.

We are seeking a detail-oriented Manual Software Tester with a strong understanding of software testing principles and methodologies. The successful candidate will be responsible for ensuring the quality, functionality, and reliability of software applications through manual testing. An ISTQB certification or knowledge of the ISTQB Foundation Level syllabus is desirable.

• Review and analyse business requirements, functional specifications, and technical documentation to identify test scenarios.
• Create, review, and execute test plans, test cases, and test scripts based on business requirements.
• Perform manual testing, including functional, regression, smoke, sanity, integration, system, and exploratory testing.
• Conduct positive and negative testing to identify defects and verify expected system behaviour.
• Identify, document, prioritise, and track defects using defect management tools such as Jira, Azure Dev Ops, or similar platforms.
• Collaborate with developers, business analysts, product owners, and other stakeholders to clarify requirements and resolve defects.
• Perform retesting and regression testing following defect fixes and software changes.
• Participate in requirements reviews, sprint planning, daily stand-ups, and other Agile ceremonies where applicable.
• Support User Acceptance Testing (UAT) by preparing test scenarios, assisting users, and validating business processes.
• Maintain accurate test documentation, test execution results, and defect reports.
• Ensure software meets functional requirements, quality standards, and acceptance criteria before release.
• Provide regular updates on testing progress, risks, issues, and test completion status.
• Contribute to continuous improvement of testing processes and quality assurance practices.

• ISTQB Certified Tester Foundation Level (CTFL) certification, or a good understanding of ISTQB testing principles.
• Experience in manual software testing and the software testing life cycle (STLC).
• Understanding of the Software Development Life Cycle (SDLC) and different software development methodologies.
• Knowledge of test design techniques, including equivalence partitioning, boundary value analysis, decision table testing, and state transition testing.
• Experience writing and executing test cases, test scenarios, and…