Automation Test Engineer - UI/API/NFT Automation testing - Shiftleft and Contract testing

We are seeking a skilled, hands-on Automation Test Engineer to support the development and delivery of high-quality digital services, enterprise applications and microservices-based systems.

The successful candidate must have practical experience in API test automation, UI test automation and performance/non-functional testing, with strong programming skills in Java and/or TypeScript.

This is a hands-on technical testing role requiring candidates to personally develop, execute, maintain and troubleshoot automated tests, rather than focusing primarily on test coordination or management.

Key ResponsibilitiesAPI Test Automation

• Develop, execute and maintain automated REST API tests using Java with REST Assured and/or TypeScript-based frameworks.
• Create automated functional, integration, regression and negative API test scenarios.
• Validate HTTP methods, status codes, JSON/XML responses, authentication and error handling.
• Develop reusable test scripts, assertions, test utilities and test data.
• Support API testing across microservices and distributed applications.

UI Test Automation

• Develop and maintain automated UI tests using Playwright with TypeScript and/or Selenium WebDriver with Java.
• Build automated functional, regression, smoke and end-to-end UI tests.
• Implement reusable page objects, locators, assertions and automation utilities.
• Investigate automation failures and improve test reliability.

Performance & Non-Functional Testing

• Personally develop, configure, execute and analyse performance test scripts using Apache JMeter, BlazeMeter, Gatling, k6 or equivalent tools.
• Build and maintain performance test plans, including parameterisation, correlation, assertions and test data.
• Execute load, stress, endurance/soak and other relevant performance tests.
• Analyse response times, throughput, error rates and resource utilisation.
• Identify performance issues and work with developers to investigate bottlenecks.
• Conduct other relevant NFT activities, including reliability, stability, capacity, accessibility or security testing, as required.

CI/CD & Agile Delivery

• Integrate automated API, UI and performance tests into CI/CD pipelines using Jenkins, Azure DevOps, GitHub Actions or equivalent tools.
• Collaborate with developers, DevOps engineers and other testers in multidisciplinary Agile teams.
• Identify, document, investigate and track defects.
• Participate in code reviews and continuously improve automated test coverage.

Mandatory Skills and Experience

• API Automation: Hands-on experience developing automated REST API tests using Java/REST Assured and/or TypeScript-based frameworks.
• UI Automation: Hands-on experience developing automated UI tests using Playwright/TypeScript and/or Selenium/Java.
• Performance Testing: Proven experience personally building, configuring, executing and analysing performance test scripts.
• Performance Tools: Practical experience with Apache JMeter or equivalent tools, including Scripting, parameterisation and workload configuration.
• Non-Functional Testing: Experience conducting load, stress, endurance and other relevant NFT activities.
• Programming: Good practical Java and/or TypeScript coding skills.
• Test Frameworks: Experience developing, maintaining and troubleshooting reusable automated test scripts and framework components.
• CI/CD: Experience integrating or maintaining automated tests within delivery pipelines.
• Agile: Experience working in multidisciplinary Agile development teams.
• API and Microservices: Understanding of REST APIs, HTTP, JSON and microservices-based applications.

Desirable Skills and Experience

• Experience with BlazeMeter, Gatling, k6 or Azure Load Testing.
• Cucumber, Serenity BDD, JUnit, TestNG or Karate.
• Performance monitoring tools such as Grafana, Prometheus or Dynatrace.
• Accessibility testing, security testing and resilience testing.
• Docker, Kubernetes, AWS or Microsoft Azure.
• Experience testing large-scale enterprise applications and distributed systems.
• Experience working on UK public sector projects.
• Active SC/DV clearance or eligibility and willingness to undergo clearance, subject to client requirements.

Candidate CV Requirements: Candidates must clearly demonstrate:

• Automated API tests personally developed, including programming languages and frameworks.
• Automated UI tests personally developed using Playwright, Selenium or equivalent.
• Performance test scripts personally built, configured and executed using JMeter or equivalent.
• Performance test types conducted and results analysed.
• Practical experience with CI/CD pipelines and Agile delivery.