Senior/Staff Engineer, Liquidity Platform, Trading Service

About this role

Who We Are

At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom.

OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves.

Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er.

OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more.

Key Responsibilities

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Design and optimize high throughput order execution systems with sub-millisecond latency targets

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Build real time market data pipelines aggregating order books and price feeds from multiple exchanges

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Implement position tracking with exchange reconciliation, risk limits, and multi account support

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Develop exchange connectivity using FIX 5.0+, WebSocket, and HTTP/2 protocols

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Profile and eliminate latency hotspots using garbage free coding and lock free concurrency

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Implement pre-trade risk controls, circuit breakers, and rate limiters

Qualifications

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Solid STEM (Science/Technology/Engineering/Mathematics) education background.

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5-8 years software development experience, preferably in trading/oms/latency sensitive systems

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Strong Java 17+ proficiency with understanding of JVM internals and GC behavior

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Hands-on experience with FIX 5.0+, WebSocket, and HTTP/2 protocols

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Solid multi-threaded programming and concurrent systems knowledge

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Understanding of order lifecycle and market microstructure basics