Senior Software Test Engineer
Hackajob
Software Engineering, Quality Assurance
London, UK
Posted on Mar 28, 2026
hackajob is collaborating with Entrust to connect them with exceptional professionals for this role.
About The Opportunity
We’re looking for a Senior Software Test Engineer with 5+ years of experience to join one of our cross-functional product engineering teams developing our frontend, backend and mobile products, powered by microservices and state-of-the-art machine learning models.
Responsibilities
As a Senior Test Engineer, you will:
We're technology-agnostic. We don’t expect you to have experience in all these technologies, as long as you’re open to learning. For testing, we mainly use:
About The Opportunity
We’re looking for a Senior Software Test Engineer with 5+ years of experience to join one of our cross-functional product engineering teams developing our frontend, backend and mobile products, powered by microservices and state-of-the-art machine learning models.
Responsibilities
As a Senior Test Engineer, you will:
- Fully own planning, coordinating and executing test and quality-related activities within a cross-functional team;
- Lead and contribute to the test engineering initiatives that have impact across several engineering teams;
- Select and apply suitable testing techniques based on a deep understanding of the product from technical and customer perspectives;
- Design and develop rich and usable test frameworks and test suites for targeted automated coverage, using a combination of open-source tools and custom code;
- Work closely with engineering and product colleagues to clarify acceptance criteria and prioritize quality improvements;
- Support acceptance testing and combine automation with exploratory testing as required;
- Work with and mentor colleagues to evolve and continuously improve delivery pipelines and feedback processes, such as release acceptance;
- Be an enthusiastic advocate for quality and an evangelist for team test culture and practice.
- 5+ years of experience in software testing;
- Strong experience in test design and automation covering web, backend, mobile;
- Great knowledge of test practices, techniques and quality engineering processes;
- Strong coding skills in multiple languages (e.g. JS/TS, Java, Ruby, Python);
- Experience in several test tools and frameworks (e.g. Playwright, Cypress, Selenium, Appium, XCUITest, Espresso, REST Assured);
- Experience working with CI/CD pipelines (e.g. GitLab, GitHub Actions, Jenkins);
- Experience with performance and load testing (e.g. k6, Gatling),
- Experience with containerization and cloud architecture (e.g. Docker, AWS, Azure).
We're technology-agnostic. We don’t expect you to have experience in all these technologies, as long as you’re open to learning. For testing, we mainly use:
- Languages: TypeScript, Ruby, Python, Swift, Kotlin
- Test frameworks: Playwright, Cypress, Selenium, RSpec, Pytest, XCUITest, Espresso, k6
- CI/CD: GitLab, Bitrise
- Deployment and infrastructure: Docker, Kubernetes, AWS
