About the Position

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Senior Test Engineer

We are looking for a Senior Test Engineer to raise the quality bar across the products of a UK-based healthcare company that enables remote patient monitoring, clinical research, and personalized healthcare. You will own the end-to-end test automation strategy for your product areas, build and scale reliable WebdriverIO suites across web, mobile, and API surfaces, and embed quality checks deep into CI/CD. You will also bring AI-assisted testing into the team's day-to-day work, partner closely with engineers, product managers, and designers, and mentor junior QA engineers. This is a hands-on senior role for an automation specialist who operates independently in a fast-paced, distributed environment and drives consistent quality standards across teams.

Responsibilities

• Design, build, and maintain robust end-to-end test suites in WebdriverIO and JavaScript.
• Extend automation coverage across web, mobile, and API surfaces using complementary frameworks where appropriate.
• Apply AI-assisted tooling to accelerate test authoring, triage flaky tests, and improve defect detection.
• Define and own functional, regression, integration, performance, API, and end-to-end test strategies for assigned products.
• Build and execute API test suites using Postman, REST Assured, or equivalent.
• Partner with engineering on testability, observability, and shift-left practices.
• Integrate automated tests into CI/CD pipelines and ensure they run reliably on every change.
• Maintain Git-based workflows and code-review standards for test code.
• Mentor junior QA engineers and review their test designs and code.
• Document test strategies, results, and defects clearly for cross-functional, distributed teams.
• Drive consistent quality standards, metrics, and review practices across teams.

Requirements

• 5+ years of professional experience in software quality assurance, with a strong focus on test automation.
• Bachelor's degree in Computer Science, Software Engineering, or a related technical field - or equivalent practical experience.
• Expert-level proficiency in JavaScript as the primary scripting language.
• Deep, hands-on expertise with WebdriverIO (WDIO) as the primary automation framework.
• Hands-on experience leveraging AI-powered testing tools and AI-assisted development tools to accelerate test creation, maintenance, and defect detection.
• Solid understanding of software testing methodologies across functional, regression, integration, performance, API, and end-to-end testing.
• Proficiency with API testing tools such as Postman, REST Assured, or similar.
• Experience integrating automated tests into CI/CD pipelines.
• Strong working knowledge of version control systems (Git).
• Strong written and verbal communication in English - you can clearly document test strategies, results, and defects, and collaborate effectively with cross-functional, distributed teams.

Nice to Have

• Working knowledge of Python or Java alongside JavaScript.
• Experience with additional automation frameworks such as Cypress, Appium, Playwright, or similar.
• Experience with performance and load testing tools (Locust, JMeter, k6, Gatling).
• Familiarity with containerization and cloud platforms (Docker, Kubernetes, AWS, Azure, or GCP).
• Experience testing AI/ML-based applications, including model output validation and prompt-based testing strategies.
• ISTQB or equivalent QA certification.
• Familiarity with security testing fundamentals, including common vulnerabilities (e.g. OWASP Top 10), authentication/authorization testing, and secure API testing practices.
• Hands-on experience with web proxy and security testing tools such as Burp Suite, OWASP ZAP, Charles Proxy, or Fiddler for traffic inspection, request manipulation, and vulnerability discovery.

Personal Attributes

• Excellent analytical and problem-solving skills with strong attention to detail.
• A proven ability to mentor junior engineers and drive quality standards across teams.
• An ownership mindset and the ability to operate independently in a fast-paced, international environment.
• A systematic, quality-driven mindset with clear communication across distributed teams.

We Offer

We offer an environment where your work directly contributes to the reliability and safety of a healthcare product used by real patients and clinicians. Join us and help ensure that quality is built into everything we deliver.

About the Company

Sysmetica is an equal opportunity employer. We encourage applications from candidates of all abilities, backgrounds, and experiences.