QA Specialist Engineer - Tamatem

QA Specialist Engineer — Tamatem

Tamatem is looking for a technically strong QA Specialist Engineer to own the quality, security, and accuracy of Tamatem plus Store and its payment flows.
You will work across the store, payment gateways, APIs, wallets, inventory, and dashboards, investigating issues end to end across the frontend, backend, and database.
As a QA Specialist Engineer at Tamatem Plus, you will:

• Own quality for assigned features, from requirements review and risk analysis through test execution, release readiness, and production validation.
• Test end-to-end payment journeys across multiple providers, including initiation, checkout, payment popups, hosted and embedded pages, redirects, SDK and S2S flows, status updates, refunds, and chargebacks.
• Validate APIs and integrations, including payloads, headers, authentication, error handling, business rules, and security controls such as API keys, HMAC signatures, and protection against request tampering.
• Test edge cases such as timeouts, interrupted payments, duplicate or out-of-order webhooks, retries, and concurrent purchases to detect duplicate charges and inconsistent records.
• Validate settlements, fees, exchange rates, payouts, invoices, and reports, alongside wallet top-ups and deductions, vouchers, inventory, and item delivery to games and partners.
• Use SQL, logs, API t