Senior Staff Software Engineer, Trading Service

OKX; Hong Kong; On-site; HKD 1,101,000 - 1,468,000; Full time

Benefits offered by this job

L&D programs

Team building programs

Wellness and meal allowances

Healthcare schemes for employees

Job summary

OKX in Singapore is seeking a Senior Staff Software Engineer for the Trading Service. You will own architectural direction for core trading components, drive ultra‑low latency, high‑throughput systems, and mentor teams across multiple groups.

The role demands expert C++ and Java performance, deep systems knowledge, and a track record of leading large‑scale distributed platforms in financial markets. You will collaborate with stakeholders to translate business needs into scalable solutions,

Qualifications

• Expert-level C++ with memory management and lock-free concurrency.
• 10+ years designing and operating ultra-low latency distributed systems in Java.
• Expert in Java performance, JVM internals, GC tuning, and concurrency.
• Proven technical leader or architect for major system components.
• Deep understanding of networking, Linux, databases, and DevOps.

Responsibilities

• Define and own long-term architecture for core trading components.
• Lead cross-team technical projects spanning multiple groups.
• Identify and eliminate performance bottlenecks, optimize latency and throughput.
• Be the technical authority for core trading systems and mentor engineers.
• Stay current with industry trends and propose innovative solutions.

Skills

C++ expert

Java performance

JVM tuning

Leadership/architect

Distributed systems

Education

Bachelor's or Master's in CS/Software Eng

Tools

Linux

CI/CD

Monitoring tools

Middleware

Job description

Senior Staff Software Engineer, Trading Service

OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa

About OKX

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.

About the Opportunity

The Trading Service team is the backbone of our exchange's industry-leading trading product, which is utilized by millions of users. We are responsible for the core order and position management systems, enabling a full spectrum of trading products, including manual, automatic, and social trading, as well as brokerage services. Our platform supports diverse financial instruments such as spot, margin, futures, options, and perpetuals.

Join our elite Trading Service team as a Senior Staff Software Engineer, where you will be a pivotal technical leader shaping the future of our ultra-low latency, high-throughput trading platform. This is a highly impactful individual contributor role for an exceptional engineer with a deep passion for financial markets and cutting-edge technology. You will own and drive the architectural direction for critical system components, solve the most complex technical challenges across multiple teams, and significantly influence our engineering practices and technical roadmap. Your work will directly empower millions of users and underpin the efficiency of our industry-leading exchange.

What You’ll Be Doing

• Define and own the long‑term technical architecture and strategy for core trading platform components, ensuring alignment with business goals and operational excellence
• Spearhead the design and implementation of highly challenging, ambiguous, and cross‑cutting technical projects that span multiple engineering teams
• Identify and eliminate critical performance bottlenecks across the entire trading architecture, implementing advanced low‑latency and high‑throughput solutions in Java
• Serve as a definitive technical authority and subject matter expert in core trading systems and Java performance; provide technical guidance, code reviews, and mentorship to senior and mid‑level engineers
• Stay abreast of industry trends, research emerging technologies (e.g., new concurrency models, hardware acceleration), and propose innovative solutions to enhance the platform's competitive edge
• Design highly resilient, fault‑tolerant systems and drive best practices in monitoring, alerting, incident response, and post‑mortem analysis for mission‑critical trading infrastructure
• Collaborate extensively with Stakeholders to translate strategic business needs into highly efficient and scalable technical solutions; influence product roadmaps from a technical feasibility and architectural sustainability perspective
• Evangelize and enforce high standards in software engineering design, coding, testing, and deployment practices across multiple teams

What We Look For In You

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related technical field (or a strong STEM education background)
• Expert‑level proficiency in modern C++, with deep knowledge of memory management, lock‑free concurrency, template metaprogramming, and compiler‑level performance tuning
• 10+ years of extensive professional experience designing, building, and operating high‑performance, ultra‑low latency distributed systems in Java
• Expert‑level proficiency in Java for performance‑critical applications, including profound knowledge of JVM internals, garbage collection tuning, and advanced concurrency patterns
• Proven experience as a technical leader or architect for major system components, demonstrating the ability to drive technical direction, with exceptional expertise in message‑oriented middleware
• Deep understanding of network protocols, OS‑level optimizations (Linux), hardware considerations, database technologies (SQL and NoSQL), and strong track record of driving DevOps practices, CI/CD, and monitoring

Nice to Haves

• PhD in Computer Science, Electrical Engineering, Physics, Mathematics, or a related quantitative discipline
• Direct experience leading the architecture or core development of matching engines, market data processing systems, or complex algorithmic trading strategies in an HFT environment
• In‑depth knowledge of FIX Protocol and other relevant financial industry messaging standards
• Experience with hardware‑level optimizations, FPGA/ASIC acceleration, or specialized networking components
• Active contributions to significant open‑source projects, academic publications, or industry conferences in low‑latency computing or FinTech

L&D programs and Education subsidy for employees' growth and development

Various team building programs and company events

Wellness and meal allowances

Comprehensive healthcare schemes for employees and dependants

More that we love to tell you along the process!

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