Automation Tester

Senior Automation Tester

Location: Reading and Occasional travel to London (Hybrid/Remote as per project requirements)
Employment Type: Full-Time
Security Clearance: Eligibility for BPSS/SC clearance preferred

About Mastek

Mastek is delivering a high-profile digital transformation programme for a Central Government department, supporting the next generation of the UK's biometric capabilities. This large-scale programme will replace and integrate with existing legacy systems while enabling enhanced interoperability across government departments.

We are looking for an experienced Senior Automation Tester to join our multidisciplinary Agile delivery team. This is an exciting opportunity to work on a complex public sector programme, leveraging modern testing tools, automation frameworks, and CI/CD practices to deliver high-quality software at scale.

Role Overview

As a Senior Automation Tester, you will be responsible for designing, developing, and maintaining robust automated testing solutions across UI and API layers. You will work closely with developers, business analysts, product owners, and fellow testers to ensure quality is embedded throughout the software development lifecycle.

The ideal candidate will have strong hands-on experience in test automation using Selenium, Java, REST Assured, Cucumber, and Serenity BDD, along with experience integrating automated tests into CI/CD pipelines.

Key Responsibilities

• Design, develop, and maintain automated test frameworks and test scripts for UI and API testing.
• Build and execute automated regression test suites with a target automation coverage of 90%+.
• Create and manage test data across multiple environments.
• Develop and maintain API automation using REST Assured.
• Implement and enhance Selenium-based automation frameworks using Java.
• Work with BDD methodologies using Cucumber and Serenity BDD.
• Integrate automated tests into CI/CD pipelines using Jenkins and/or Concourse.
• Perform functional, integration, system, and regression testing.
• Analyse business requirements, user stories, and technical documentation to create comprehensive test scenarios.
• Log, track, and manage defects using Jira.
• Execute SQL-based database validation and backend testing activities.
• Collaborate with cross-functional Agile teams to ensure quality throughout the delivery lifecycle.
• Participate in sprint planning, backlog refinement, daily stand-ups, and retrospectives.
• Produce test reports, test evidence, and quality metrics for stakeholders.
• Identify and implement test process improvements and automation best practices.
• Mentor junior testers and contribute to the automation testing community within the organisation.

Required Skills & Experience

Essential

• 7+ years of hands-on experience in Automation Testing.
• Strong experience with:
• Selenium WebDriver
• Java
• REST Assured
• Cucumber BDD
• Serenity BDD Framework
• Strong experience in API and UI automation testing.
• Experience building and maintaining automation frameworks from scratch.
• Excellent understanding of Agile testing principles and methodologies.
• Experience with CI/CD tools such as Jenkins or Concourse.
• Strong SQL and database testing experience.
• Experience using Jira for defect management and test tracking.
• Extensive experience with:
• Functional Testing
• Regression Testing
• Integration Testing
• Test Planning and Execution
• Requirement Analysis
• Experience creating and maintaining automated regression packs.
• Strong analytical and problem-solving skills.
• Excellent verbal and written communication skills.

Desirable

• Git version control.
• Maven build management.
• Allure Reports, Serenity Reports, or Extent Reports.
• Service Virtualisation tools and techniques.
• Accessibility Testing (WCAG Compliance).
• AWS cloud platform exposure.
• Docker and Kubernetes.
• Public Sector or Government programme experience.

What We're Looking For

• A self-starter who thrives in both structured and ambiguous environments.
• Strong stakeholder engagement and communication skills.
• Proven ability to work effectively with senior client stakeholders and delivery teams.
• Passion for quality engineering and continuous improvement.
• Ability to balance technical excellence with delivery objectives.
• Strong collaboration and teamwork skills within Agile environments.
• Commitment to learning and adopting emerging testing technologies and best practices.

Why Join Mastek?

• Opportunity to work on a nationally significant Government transformation programme.
• Exposure to modern automation, cloud, and DevOps practices.
• Collaborative and Agile working environment.
• Career growth and continuous learning opportunities.
• Work alongside industry experts on large-scale digital transformation initiatives.

If you are passionate about quality engineering, automation, and delivering impactful public sector solutions, we'd love to hear from you.