Test Engineer, Data

Company: Jobtailor
Apply for the Test Engineer, Data
Location: Harwell
Job Description:

Overview

  • Help ensure the quality and reliability of the DataCosmos platform, testing frontend interfaces and APIs through to data flows and platform behaviour.
  • Define and implement testing strategies across platform features and releases.
  • Design, build, and maintain automated tests for frontend and backend systems.
  • Carry out manual and exploratory testing across user journeys and edge cases.
  • Validate data flows, outputs, and platform reliability.
  • Collaborate with engineering and product teams to define acceptance criteria and test coverage.
  • Support CI/CD pipelines and improve automated testing within release cycles.
  • Identify gaps in coverage and drive improvements in testing practices and frameworks.
  • Investigate defects across UI, API, and data layers.
  • Review user and admin documentation to ensure clarity and alignment with system behaviour.

Requirements

  • Ability to design reliable and repeatable tests using manual and automated approaches
  • Understanding of different testing strategies including integration, regression, system, and exploratory testing
  • Ability to build automated tests for web UIs and APIs using modern testing frameworks
  • Understanding of API-driven systems and client-server architectures
  • Ability to validate data integrity, transformations, and outputs within data platforms
  • Awareness of CI/CD practices and testing within release pipelines
  • Strong analytical thinking and attention to detail when identifying defects and inconsistencies
  • Understanding of user workflows and the ability to test from different user perspectives
  • A collaborative and pragmatic approach, balancing speed and quality in a scaling environment

Hard Skills

  • automated testing
  • manual testing
  • exploratory testing
  • integration testing
  • regression testing
  • system testing
  • API testing
  • data validation
  • test strategy design
  • test coverage

Soft Skills

  • analytical thinking
  • attention to detail
  • collaboration
  • pragmatic approach
  • problem-solving

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Posted: July 11th, 2026