Test Automation Engineer (Playwright / .NET)

Goaco; Dartford; On-site; GBP 45,000 - 65,000; Full time

Job summary

Goaco is seeking a Test Automation Engineer to join its collaborative digital team. You will design, build and maintain automated test suites in Playwright and .NET, integrating them into CI/CD pipelines for fast, trusted feedback on every change.

You will work with developers to shift testing left, build quality in from refinement, and communicate risks clearly to both technical and non-technical colleagues.

Qualifications

• Hands-on Playwright experience with web apps.
• Strong C# and .NET skills; read production code and write test code.
• Experience integrating automated tests into CI/CD pipelines and handling parallelism, retries, reporting and environment setup.

Responsibilities

• Design, build and maintain end-to-end, API and component test suites in Playwright for .NET (C#).
• Integrate automated tests into CI/CD pipelines with parallel runs and clear reporting.
• Advocate for early testing involvement and testable designs with developers.
• Reduce flaky tests and improve run times and reliability.
• Implement contract testing (Pact) to protect integrations.
• Contribute to test strategy and assurance evidence for service assessments and go-live decisions.
• Communicate testing risks and dependencies clearly to team and stakeholders.
• Share automation practices across the organisation and contribute to quality engineering standards.

Skills

C#

.NET

CI/CD

Git

Testing strategy

Risk communication

Contract testing

Tools

Playwright

Azure

AWS

Docker

Kubernetes

GitHub Actions

Azure DevOps

Job description

We're recruiting for a Test Automation Engineer to join our collaborative digital team, supporting the delivery of public services that matter to the people who rely on them.

As a Test Automation Engineer, you will design, build and maintain automated test suites in Playwright and .NET (C#), and integrate them into CI/CD pipelines so every change ships with fast, trusted feedback. You will work alongside developers from refinement onwards, advocating for early testing involvement and helping the team build quality in rather than check for it at the end.

This role requires hands-on technical skill, a pragmatic view of what to automate and where, and the ability to explain risk clearly to technical and non-technical colleagues.

The community

You will be part of a supportive engineering community, working with developers, product managers, user researchers, designers, business analysts and delivery managers to embed quality into digital services.

We champion continuous learning, open communication and agile ways of working. We believe in building quality into our products, systems and services, and that quality is everyone's responsibility.

Key responsibilities

• Design, build and maintain end-to-end, API and component test suites in Playwright for .NET (C#) against services built on ASP.NET Core.
• Integrate automated tests into CI/CD pipelines (GitHub Actions or Azure DevOps), with parallel runs, clear reporting and reliable results on every pull request.
• Work with developers to shift testing left: testable designs, test-first conversations at refinement, and unit and integration coverage in the codebase.
• Keep the automated suite trusted by driving down flaky tests and making run times and failure rates visible to the team.
• Implement contract testing (Pact) to protect integrations between services and teams.
• Contribute to the test strategy and assurance evidence needed for service assessments and go-live decisions.
• Highlight testing risks and dependencies early, and communicate them clearly to the team and stakeholders.
• Share automation practice with testers and developers across the organisation, and contribute to our quality engineering standards.

Specifications

• Proven experience building and maintaining test automation for web applications, including hands-on Playwright experience.
• Strong C# and .NET skills: able to read production code, write clean maintainable test code and review others' pull requests.
• Experience integrating automated tests into CI/CD pipelines and handling parallelism, retries, reporting and environment setup.
• Working knowledge of Git and modern branching workflows.
• Understanding of functional and non-functional testing techniques and when to apply them.
• Strong problem-solving skills and attention to detail.
• Ability to communicate test results and risk clearly to technical and non-technical colleagues.
• Eligible to work in the UK and to obtain BPSS clearance.
• Contract testing with Pact or similar.
• Experience with cloud-based test environments, for example Azure, AWS, Docker or Kubernetes.
• Accessibility testing tools such as axe or Pa11y.
• Performance testing tools such as k6 or JMeter.
• Experience on UK government digital services and the GDS Service Standard.
• Playwright in TypeScript alongside .NET.