Senior Quality Assurance Engineer / QA Engineer

Senior QA Engineer | B2B SaaS | Remote-first | £45–55k We're hiring a Senior QA Engineer to own quality end-to-end at a scaling B2B SaaS company. The software is complex, calculation-heavy, and used by enterprise clients where accuracy is non-negotiable. You'll be the final gate before every release, the source of truth on what's broken and what's fixed, and the person who builds the QA function from the ground up. You'll attend design sessions to catch issues before they're built, run manual testing sweeps per release, and own bug tracking end-to-end. If a bug ships, it's on you. Running manual testing sweeps each release cycle Building the QA process where little currently exists Proven senior QA experience in a B2B SaaS environment Strong manual testing skills alongside familiarity with automation frameworks (Cypress, Playwright, Selenium or similar) Comfort with complex, logic-heavy software where numerical accuracy matters UK-based, able to come into a London office once or twice a month You've joined a company with an immature QA process and built something from scratch 45,000–£55,000 (flexible for the right person) ~ Remote-first, UK-based ~ London office, 1–2× per month ~