Senior Staff Software Engineer, Trading Services

OKX; Hong Kong; On-site; HKD 1,200,000 - 1,800,000; Full time

Benefits offered by this job

Competitive compensation

Education subsidy

Team events & wellness

Healthcare coverage

Job summary

OKX is hiring a Senior Staff Software Engineer for its Trading Service at its Hong Kong offices. You will own architectural direction for core trading components, drive high-performance, low-latency systems in Java and C++, and mentor engineers across multiple teams.

Join a globally distributed team focused on a scalable trading platform spanning spot, margin, futures, options, and more. Expect collaboration with stakeholders to align technical roadmap with business goals, and opportunities to

Qualifications

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related technical field.
• Expert-level proficiency in modern C++, with memory management, lock-free concurrency, and performance tuning.
• 10+ years of experience building high-performance, ultra-low latency distributed systems in Java.
• Proven leadership or architecture experience for core system components, with expertise in message-oriented middleware.

Responsibilities

• Define and own the long-term architecture for core trading platform components.
• Lead cross-team technical projects spanning multiple engineering groups.
• Eliminate bottlenecks to achieve low latency and high throughput in trading systems.
• Provide technical guidance, code reviews, and mentorship to senior engineers.
• Stay informed on industry trends and propose innovative optimizations for the platform.

Skills

C++ expert

Java performance

System architecture

Low-latency systems

Mentorship

Education

Bachelor's or Master's in CS/SE

Tools

Message-oriented middleware

Linux performance

CI/CD

Job description

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

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 infrastructureCollaborate 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

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 allowances
• Comprehensive healthcare schemes for employees and dependants
• More that we love to tell you along the process!

#LI-ML1 #LI-ONSITE

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