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