The Role
Design, build, and scale backend services for DEX trading, including quote aggregation, order management, transaction orchestration, execution tracking, and reconciliation. Integrate with blockchain protocols, liquidity sources, RPC providers, and indexing services. Improve reliability under high concurrency through resilient state models, rate limiting, caching, asynchronous processing, monitoring, and graceful degradation. Own features from technical design through deployment and ongoing production operation.
Summary Generated by Built In
OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa
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.
About the Opportunity What You’ll Be Doing What We Look For In You Perks & Benefits
We are looking for a seasoned backend engineer to design, build, and scale the backend systems powering OKX’s DEX trading products. You will own critical parts of the trading lifecycle—from quote discovery and order management to transaction submission, execution tracking, and reconciliation. Working closely with product, frontend, smart contract, and infrastructure teams, you will deliver secure, reliable trading experiences across multiple blockchain ecosystems. This is a hands-on engineering role with meaningful architectural ownership and opportunities to grow into technical leadership.
- Design and develop backend services for quote aggregation, order management, transaction orchestration, and execution tracking.
- Build reliable integrations with DEX protocols, liquidity sources, blockchain RPC providers, and indexing services. Define clear order and transaction state models, with robust handling of retries, duplicate requests, partial failures, and recovery.
- Ensure trading services remain reliable under high concurrency, traffic spikes, and degraded external dependencies.
- Implement appropriate rate limiting, concurrency controls, resource isolation, and graceful degradation.
- Optimize database access, transaction boundaries, caching, and asynchronous processing. Establish monitoring, alerting, load testing, and incident-response practices for critical trading flows.
- Support trading workflows across multiple blockchain ecosystems. Handle transaction submission, confirmation tracking, failed or dropped transactions, and chain reorganizations.
- Build data synchronization and reconciliation mechanisms to maintain consistency between backend records and on-chain execution.
- Translate product requirements into practical technical designs and production-ready services.
- Own features through implementation, testing, rollout, and post-launch operation.
- 5+ years of professional backend engineering experience, including ownership of production systems.
- Strong proficiency in Java and its backend ecosystem. Solid understanding of concurrency, distributed systems, relational databases, caching, and messaging systems.
- Experience building high-availability services and diagnosing performance or reliability issues in production.
- Understanding of blockchain transactions, smart contract interactions, and common DeFi trading mechanisms.
- Ability to independently drive a feature from technical design through production deployment. Strong ownership, sound engineering judgment, and effective cross-functional communication.
- 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!
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.
Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to OKX's Candidate Privacy Notice.
Skills Required
- 5+ years of professional backend engineering experience, including ownership of production systems
- Strong proficiency in Java and its backend ecosystem
- Understanding of concurrency, distributed systems, relational databases, caching, and messaging systems
- Experience building high-availability services and diagnosing production performance or reliability issues
- Understanding of blockchain transactions, smart contract interactions, and common DeFi trading mechanisms
- Ability to independently drive features from technical design through production deployment
- Strong ownership, sound engineering judgment, and effective cross-functional communication
- Current right to work in Singapore without visa sponsorship
OKX Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about OKX and has not been reviewed or approved by OKX.
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Fair & Transparent Compensation — Pay is considered competitive or above market, especially in engineering, product, and legal roles across major hubs. This positioning is consistently cited as a major attraction for candidates.
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Healthcare Strength — Role descriptions indicate comprehensive medical, dental, vision, life, and disability coverage, with employer-paid premiums in some cases. Health coverage is highlighted alongside core benefits like PTO and parental leave.
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Wellbeing & Lifestyle Benefits — Allowances for education and fitness, meal perks and snacks, team-building budgets, and structured learning programs are described across locations. These extras enhance the total rewards package beyond base pay.
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The Company
What We Do
Founded in 2017, OKX is one of the world’s leading cryptocurrency spot and derivatives exchanges. OKX innovatively adopted blockchain technology to reshape the financial ecosystem by offering some of the most diverse and sophisticated products, solutions, and trading tools on the market. Trusted by more than 20 million users in over 180 regions globally, OKX strives to provide an engaging platform that empowers every individual to explore the world of crypto. In addition to its world-class DeFi exchange, OKX serves its users with OKX Insights, a research arm that is at the cutting edge of the latest trends in the cryptocurrency industry. With its extensive range of crypto products and services, and unwavering commitment to innovation, OKX’s vision is a world of financial access backed by blockchain and the power of decentralized finance.
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