Engineer Jobs in Web3

About Freedx

Freedx is a newly established cryptocurrency exchange dedicated to delivering a seamless, secure, and innovative trading experience. Built by a team of seasoned professionals from the crypto, finance, and technology sectors, we’re united by a shared vision for shaping the future of digital finance.

Our goal is simple: to become the most trusted and reliable exchange, empowering users to manage their digital assets confidently and efficiently.

Security, transparency, and scalability sit at the core of everything we do. We continuously innovate to meet the evolving needs of traders, offering cutting-edge tools and services that help clients achieve their financial goals.

Join us as we redefine the standards of digital asset trading and bring true freedom and reliability to the crypto world.

About the Role

We are building alow-latency market-making systemfor spot and futures across multiple exchanges (Binance, Bybit, OKX, KuCoin) as well as ourinternal OMS, Matching, Risk, and Hedge engines.

We are looking for aRussian-speaking QA Engineerwho understands trading flows, knows how to break complex systems, and can ensure stability in environments where milliseconds matter.

This role is open to bothManual QAandAutomation QAprofiles.

Responsibilities

• Test the full order lifecycle: placement, cancellation, partial fills, slippage, reduce-only, risk checks.
• Validate the behavior of market-making and hedging logic under real market conditions.
• Test exchange integrations (REST & WebSocket): balances, positions, trades, orderbook data, latency metrics.
• Verify PnL, margin, and exposure calculations across spot and derivatives.
• Test internal services: OMS, Matching Engine, Risk Engine, Hedge Engine, monitoring & alerting pipelines.
• Work with logs, metrics, and real-time data streams.
• Create and maintain test cases, scenarios, and QA documentation.
• Reproduce complex edge-cases: mismatched WS updates, delayed fills, funding spikes, stale data.

• 2–4+ years of QA experience (manual or mixed manual/automation).
• Strong understanding of API testing (REST & WebSocket).
• Ability to analyze logs, trace order flows, and debug data inconsistencies.
• Good knowledge of crypto trading basics: order types, orderbook, spreads, fills, PnL.
• Fluency in Russian(required).
• Working proficiency in English (for cross-team collaboration).

Nice to Have

• Hands-on experience with crypto exchanges, trading systems, or algorithmic trading setups.
• Experience with Python test automation (pytest), load testing tools (k6/Locust).
• Familiarity with Kubernetes, CI/CD.
• Familiarity with .NET (C#) and PostgreSQL.

• Remote-first flexibility.
• Flexible payment options - choose to be paid in traditional currency (USD) or cryptocurrency (USDT / USDC).
• Be part of a world-class founding team setting new standards in digital asset trading.
• Work on high-impact, low-latency trading infrastructure used across global crypto markets.
• Opportunity to grow as we scale rapidly across markets and product lines.