Technical Lead C# (core trading system)

We're looking for a Technical Lead (C#/.NET) to take architectural and technical ownership of the core trading systems behind EMCD's crypto exchange. This role sits at the center of the platform: matching engine, risk management, spot trading, and derivatives. It's a position for someone who understands that every microsecond, every edge case in order handling, and every liquidation scenario directly affects the product. Responsibilities: Own the matching engine and order lifecycle: limit, market, stop, post-only, IOC, FOK, self-trade prevention, partial fills Develop and improve the risk engine for derivatives: cross/isolated margin, PnL and funding calculations, liquidation flows, ADL, insurance fund logic Define and evolve the consistency and persistence model of the trading core: event sourcing, trade journal, snapshots, replay, crash recovery without order loss Design reliable interaction patterns between the trading core and surrounding systems: gateways, custody, market data streams, clearing services Set and monitor latency and throughput targets, and build the tooling to measure them: benchmarks, load environments, profiling under production-like traffic Requirements: 7+ years of commercial experience with C# / .NET, including at least 2–3 years as a Tech Lead or Architect Hands-on production experience with matching engine and at least one of the following: exchange gateway, risk engine, or market data feed Proven experience building low-latency, high-throughput systems Direct experience working on a centralized crypto exchange (CEX) with real order flow and real money Deep understanding of trading primitives: order types, margin trading, perpetual futures, funding rate, liquidations, ADL, maker/taker logic, fee tiers Strong knowledge of distributed systems: consistency, idempotency, exactly-once semantics, queues/streams (Kafka, NATS, or similar), replicated state, fault tolerance Experience writing and maintaining architecture documentation (ADR, design docs) Experience leading teams: hiring, 1:1s, incident review, development and release processes Nice to have: Experience with DEX infrastructure or hybrid exchange models (CEX + on-chain settlement) Understanding of regulatory requirements relevant to exchanges: KYC/AML, market surveillance, best execution 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