1 of 1 Permanent JSON Schema Jobs in London

with engineering, product, and design to define testability requirements before features are built, not after. Establish and document QA standards: contract testing (Pact/JSON Schema), flake quarantine policies, API response validation, and spy/mock/stub conventions across the stack. Own bug lifecycle from identification … edge cases (card declines, capture failures, 3DS, network timeouts) repeatably on both simulator and physical device CI. Solid experience with API contract testing (Pact, JSON Schema, or equivalent) — you've caught silent breaking changes before they hit production. Strong understanding of flake detection, quarantine strategies, and async timing ...