QA Engineer
Core
Manual-first QA Engineer ensuring stability of a payments platform during frequent releases and hotfixes.
Role type
Senior QA Engineer (manual/API focus)
Builds
Stable payment flows, API endpoints, and webhook integrations for consumer products.
Domain
Fintech / Payments
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
Manual testing, Risk-based testing, API testing (Postman/Newman), SQL (PostgreSQL), Log/Monitoring analysis, Incident-to-tests conversion
Preferred skills
PSP experience (Stripe/Adyen), 3DS flows, Test automation frameworks (pytest/Playwright), Network tokenisation
Technologies
Postman, Newman, Swagger, OpenAPI, PostgreSQL, Grafana, Kibana, ELK, Sentry, Stripe, Adyen, PayPal, Braintree, Worldpay
Responsibilities
Validate new features and fixes across Web UI and APIs; Define test scope based on financial/customer impact; Test REST APIs, async flows, and webhooks; Verify state transitions and side effects in PostgreSQL; Maintain and improve smoke and regression suites; Convert production incidents into regression cases or monitoring checks; Provide concise QA notes per release.
Seniority
Mid-Senior, hands-on IC