DeFi Jobs

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

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

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

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

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

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

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

Qualifications

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

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

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

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

Solid multi-threaded programming and concurrent systems knowledge

Understanding of order lifecycle and market microstructure basics

Strong problem solving skills and attention to detail

Excellent communication and collaboration skills

Ability to work independently and as part of a team in a fast paced environment

Preferred Skills

Cryptocurrency/Digital Assets: Crypto exchange APIs, DeFi, blockchain trading

Execution Algorithms: TWAP, VWAP, iceberg, sniper, or other smart order routing strategies

IPC Technologies: Aeron, Chronicle Queue, shared memory messaging

Proficiency or strong interest in Rust for performance critical systems development

Low latency libraries: Agrona Collections, Protocol Buffers, SBE for high performance serialization

Spring Framework, Netty, Vert.x

Timeseries databases (e.g InfluxDB)

Redis, etcd for caching and coordination

  Technical Environment Languages: Java 17+, Rust, Python Protocols: FIX 5.0+, WebSocket, HTTP/2 Stack: Spring, Netty, Aeron, Chronicle Queue, Redis, MySQL, InfluxDB

Perks & Benefits

Competitive total compensation package L&D programs and education subsidy for employees' growth and development Various team building programs and company events Wellness and meal allowance Comprehensive healthcare schemes for employees and dependants More that we love to tell you along the process!

  Please note that Hong Kong is a group-level service hub, and OKX does not carry on a business of operating a virtual asset trading platform in Hong Kong.  Notice: All official OKX vacancies are published on this website. While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated. If in doubt, please apply directly through our official careers website.

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