QA Lead (trading platform)

EMCD is building and scaling its own trading platform, and we're looking for a Senior QA Engineer with strong trading domain experience to take ownership of product quality across the platform. This role is ideal for someone who wants to stay hands-on, influence QA strategy, and gradually grow into a leadership position with a small team of 2 QA engineers. Responsibilities Own and improve end-to-end QA processes across the exchange platform Drive QA for the trading core, including matching, risk, spot, derivatives, custody, gateways, and market data Define release quality gates, test coverage expectations, regression scope, and acceptance criteria Develop testing approaches for trading scenarios: order lifecycle, balance consistency, margin, liquidations, ADL, funding, and PnL Own performance and stress testing processes: latency, throughput, stability, and regression tracking Organize contract and end-to-end testing between distributed services Improve test environments, test data, simulators, and staging reliability Participate in incident reviews from a QA perspective and help prevent recurring production issues Contribute to QA standards and help shape the future QA setup of the team Requirements 5+ years of experience in QA and mandatory experience in trading, exchange, or brokerage Strong understanding of trading concepts: orders, order book, margin, balances, PnL, liquidations, funding, and market data Experience building or significantly improving test automation: frameworks, CI integration, reporting, and test data Strong understanding of distributed systems testing: contract testing, idempotency, race conditions, eventual consistency, fault tolerance, and chaos testing Hands-on experience with performance and load testing using tools such as k6, Gatling, JMeter, or custom generators Ability to work closely with engineering: review specifications, challenge design decisions, and define test strategy early Nice to Have Experience with a crypto exchange, CEX, custody, or market-making infrastructure Experience with property-based or fuzz testing tools Security testing experience or participation in pentest processes for financial systems What We Offer: Fully remote work from anywhere in the world Flexible working hours focused on results 28 calendar days of vacation + 12 additional bonus days Paid sick leave with no bureaucracy Compensation for courses, certifications, and training programs Real ownership of one of the most critical parts of the exchange infrastructure