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QA SDET (Javascript)

London, UK💼 Full-time🗓 2026-03-27 → 2026-08-07

Core

Lead a Quality Engineering team and build advanced test automation frameworks using JavaScript/TypeScript to ensure early testing and high-quality software delivery.

Role type

Lead Software Development Engineer in Test (SDET)

Builds

Automated test frameworks (unit, integration, UI, end-to-end) and quality engineering assets

Domain

Software Engineering / Quality Assurance

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

JavaScript/TypeScript, Playwright, Jest, React component testing, Object-oriented Programming (OOP), Git, Agile methodologies, Test automation framework design, Defect density tracking, Mean time to detect/resolve issues

Preferred skills

Experience with WebdriverIO, Cypress, or Playwright, mentoring team members, Shift-Left Testing expertise

Technologies

WebdriverIO, Cypress, Playwright, Jest, React, Git, GitLab

Responsibilities

Lead and mentor SDETs, build advanced test automation frameworks from scratch, define and track quality metrics, input into design and build of automated tests, provide test assurance for user stories, participate in estimation and retrospectives

Seniority

Senior, hands-on IC with leadership responsibilities

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