QA Engineer (Middle / Middle+, iGaming)

QA Engineer (Middle/Middle+) for iGaming products (slots and live betting). Remote, full-time. Test game mechanics, payments, and realtime features.

We are looking for a QA engineer for a team developing two real-money iGaming products: slots and live betting with realtime interaction. You will be responsible for the quality of game mechanics, money calculations, and payment logic on web and mobile devices, testing both UI and API, and ensuring stable releases. Responsibilities: - Functional, regression, and smoke testing of mobile-first interfaces of both products - Testing game mechanics: round lifecycle, outcome and payout calculation, multipliers, autoplay (take-profit / stop-loss), bet cancellation, one-tap cash-out - Testing realtime via WebSocket / Socket.IO: round synchronization, delays, reconnections, behavior on connection loss - Checking wallet and transactions: balances, deposits and withdrawals, multicurrency, accuracy of money calculations, idempotency of operations - Testing REST and WebSocket APIs, checking data in PostgreSQL - Checking Provably Fair: correctness of generation and verification of results - Testing platform flows: onboarding, KYC, bonuses, VIP, notifications - Writing and maintaining test cases, checklists, and bug reports, participating in release planning

Requirements: - 2+ years of commercial QA experience - Experience testing in iGaming / betting / casino - Solid knowledge of testing theory and test design techniques - Experience testing APIs (REST, WebSocket) in Postman or similar - Experience testing realtime applications and mobile web on different devices and browsers - Basic SQL for data verification - Understanding of client-server architecture, confident work with DevTools, logs, Charles / Proxyman Will be a plus: - Automation experience in TypeScript (Playwright, Cypress, Vitest) - Load testing (k6, JMeter) - Understanding of Provably Fair (HMAC-SHA256) and RNG mechanics - Experience testing payment integrations, KYC/AML, bonus systems - Docker at the level of setting up a local environment

Remote, full-time.