Java Engineer at AstroX

Job Description

Key Responsibilities

• Design and implement the exchange's core matching engine, supporting order types including limit orders, market orders, stop-loss/take-profit, iceberg orders, and conditional orders.
• Develop high-performance matching algorithms and data structures to ensure high concurrency and low latency order execution.
• Optimize matching performance and memory management to achieve millisecond-level response times.
• Participate in risk control design for matching and clearing modules (price deviation, circuit breakers, risk limits).
• Integrate matching data with market data push services, supporting real-time WebSocket subscriptions.
• Conduct matching engine testing including stress testing, extreme market scenario backtesting, and disaster recovery drills.
• Collaborate with Java backend team and risk control team to ensure consistency in trading logic and fund settlement.

Job Requirements

• Proficient in at least one of Java/Go/Rust with deep understanding of multithreading and high-performance memory structures.
• Thorough knowledge of matching engine principles and order book data structures (red-black trees, skip lists, heaps).
• Experience in low-latency system development with expertise in GC optimization, lock optimization, and concurrency control.
• Understanding of common exchange trading logic (spot, futures, options) and ability to design complex order types.
• Familiarity with market data generation, K-line aggregation, and index price calculation.
• Prior experience developing exchange matching engines is highly preferred.

Benefits

• Meal allowance - Daily meal provision or meal subsidy
• Overtime compensation - Overtime pay according to company policy
• Transportation allowance - Commuting expense subsidy
• Travel support - Air ticket reimbursement (following company policy)
• Vacation policy - Annual leave and national statutory holidays