Senior Engineer - Java (Exchange Platform - Trading Services)
Who We Are
At OKX, we believe that the future is shaped by technology. Established in 2017, OKX is a leading global exchange for cryptocurrency spot and derivatives trading. We have leveraged blockchain technology to revolutionize the financial ecosystem by offering a wide range of innovative and sophisticated products, solutions, and trading tools. With over 20 million users in over 180 regions globally, OKX aims to provide an inclusive platform that allows individuals to explore the world of crypto. In addition to our top-notch DeFi exchange, we also have OKX Insights, a research arm focused on the latest trends in the cryptocurrency industry. With our diverse range of crypto products and services and our commitment to innovation, OKX envisions a world of financial access powered by blockchain and decentralized finance.
We value our people as much as we value technology. We foster a collaborative culture where we celebrate team wins, embrace change, and always strive to do what is right. Our priority is to create a friendly, rewarding, and diverse environment for all OKX members. Regardless of your background, we want everyone to feel valued, respected, and empowered to develop and thrive - because we believe in bringing out the best in you.
About the Opportunity
The Trading Services Team is responsible for the core order and position management system of our exchange. It serves as the backbone of our industry-leading trading product, which is utilized by millions of users.
What You'll Be Doing:
- Designing and implementing innovative solutions for our entire range of trading products, including spot trading, futures, perpetual swaps, and options.
- Building a cutting-edge risk management platform.
- Developing automated trading strategies.
- Optimizing the overall trading architecture for low latency, high availability, and scalability.
What We Look For In You:
- A solid STEM (Science, Technology, Engineering, Mathematics) education background.
- Strong logical thinking and problem-solving abilities.
- Proficiency in high-performance Java and asynchronous programming patterns.
- Familiarity with distributed systems and microservice architecture.
- Experience with automated testing and continuous integration practices.
- Willingness to learn all aspects of trading products in the financial and crypto markets, including spot trading, futures, swaps, options, and structured products.
- Fluent in English.
Product Manager – Portfolio Companies
Sirex Portfolio Companies
Salary: $135,000 – $190,000 USD base + equity
Location: Remote-first
About the role Own product strategy and roadmap for 1–2 portfolio projects (DeFi protocols, trading platforms or RWA infrastructure).
What you’ll do
Define vision, prioritize features and write specs
Work directly with smart-contract and frontend teams
Design user flows and drive product-market fit
Run user research and iterate fast
Requirements
4+ years Product Management experience
Previous Web3/DeFi product experience mandatory
Strong technical intuition
Apply → Send CV + 1 strongest product case
Frontend Engineer – Web3 Products
Sirex Portfolio Companies
Salary: $120,000 – $175,000 USD base + equity
Location: Remote-first
About the role Build beautiful, high-performance frontends for DeFi, RWA and agent platforms (Next.js + Wagmi/Viem stack).
What you’ll do
Ship trading interfaces, dashboards and wallet flows
Optimize for mobile and lightning-fast UX
Integrate with smart contracts and oracles
Work directly with design and product teams
Requirements
3+ years Next.js / React + TypeScript
Strong experience with Wagmi, Viem, RainbowKit or similar
Web3 product intuition (wallets, transactions, gas UX)
Apply → Send CV + GitHub
On-Chain Data Analyst
Sirex Fund + Portfolio
Salary: $110,000 – $160,000 USD base + equity
Location: Remote-first
About the role
Turn raw blockchain data into actionable investment insights and portfolio monitoring tools.
What you’ll do
Build and maintain Dune dashboards + custom indexers
Track TVL, user activity, token flows and protocol health
Create weekly investment memos and anomaly alerts
Support due diligence with on-chain forensics
Requirements
Strong SQL + Python experience
Deep knowledge of The Graph, Dune, Flipside or custom subgraphs
Previous crypto research or trading background
Apply → Send CV + 1 example Dune dashboard
Operations Associate / Chief of Staff
Sirex Fund Salary: $95,000 – $135,000 USD base + carry Location: Remote-first
About the role Be the right-hand person to partners: run fund operations, portfolio support and internal processes.
What you’ll do
Manage deal flow, data rooms and investment memos
Coordinate portfolio reporting and founder updates
Handle legal, compliance and admin tasks
Support events, LP communication and hiring
Requirements
2–4 years in VC, startup ops or consulting
Extremely organized and fast-moving
Web3/native crypto understanding is mandatory
Apply → Send CV + short note “Why you’d be a great CoS”
Community & Growth Lead
Sirex Portfolio Companies Salary: $110,000 – $155,000 USD base + equity + token package Location: Remote-first
About the role Own community strategy and growth for 2–3 portfolio projects (AI agents, RWA platforms, DeFi protocols).
What you’ll do
Build and scale Telegram, Discord, X and on-chain communities
Run engagement campaigns, AMAs, airdrops and incentive programs
Create content calendars and growth experiments
Track metrics and report directly to founders
Requirements
3+ years community/growth experience in Web3
Proven track record of growing communities from 0 to 10k+ active members
Strong writing and meme/game theory skills
Apply → Send CV