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Caristo

Software Developer Engineer in Test

Oxford, Oxfordshire

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hirly's read of this role

Role family
Engineering
Seniority
Mid level
Country
GB
Work mode
On-site / unstated
First seen by hirly
12 Oct 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

  • Job Title Software Developer Engineer in Test
  • Department Engineering
  • Reports To: Lead Test Engineer
  • Location: Oxford, UK

Responsibilities

  • Enhance and extend the existing Python/Selenium/Behave automation framework.
  • Evaluate and introduce improvements to increase the test framework reliability, maintainability and execution speed.
  • Refactor and optimise existing automated tests for stability and maintainability.
  • Increase automation coverage to reduce reliance on manual testing.
  • Develop reusable automation utilities and libraries.
  • Implement coding standards and best practices for automation.
  • Maintain comprehensive documentation for the automation framework.
  • Training and mentoring junior members of the team.
  • Promote automation-first thinking within the testing team.
  • Compliance with the MDD/MDR and ISO 13485/62304 standards for validation and verification of software medical devices.

Skills & Experience Required:

  • Essential
  • Strong Python programming skills, including object-oriented programming and clean code principles.
  • Experience developing and maintaining test automation frameworks using known browser automation framework (e.g Selenium or Playwright) and BDD (e.g. Behave).
  • Solid understanding of the Page Object Model (POM) and other automation design patterns.
  • API test automation using tools and libraries such as requests or similar.
  • Experience writing maintainable, reusable, and scalable automated test suites.
  • Familiarity with version control systems (Git).
  • Experience working with CI/CD pipelines (e.g. GitLab CI).
  • Ability to troubleshoot and resolve flaky or unstable automated tests.
  • Experience with logging, reporting, and test result analysis.
  • Strong analytical and problem-solving skills.
  • Desirable
  • Experience integrating automated tests into deployment pipelines
  • Knowledge of Linux command line
  • Experience with containerisation (Docker)
  • Familiarity with cloud platforms (AWS)
  • Experience with test reporting tools such as Allure
  • Understanding of test data management and environment configuration.
Original posting on Caristo's site ↗

Listed on hirly, a job board. hirly is not the employer: Caristo is hiring for this role.

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