Senior Software Engineer (Exchange Middle Platform)
Who We Are
At OKX, we believe that technology shapes our future. Established in 2017, OKX is a leading cryptocurrency exchange that deals with spot and derivatives trading. We have implemented blockchain technology to revolutionize the financial ecosystem by providing a wide range of innovative products, solutions, and trading tools. With a user base of over 20 million individuals across 180 regions worldwide, OKX aims to offer an engaging platform that empowers everyone to explore the world of crypto. Along with our exceptional DeFi exchange, we also operate OKX Insights, a research arm that stays at the forefront of the latest trends in the cryptocurrency industry. Our vision is to foster a world of financial access supported by blockchain and the power of decentralized finance.
We are dedicated to investing in our people just as much as we invest in technology. Our company culture fosters teamwork, embraces change, and values integrity. We strive to create a friendly, rewarding, and diverse environment for our employees. Regardless of your background, we want all individuals to feel valued, respected, and have equal opportunities for growth and success—our goal is to bring out the best in you.
About the Opportunity
The Middle Platform team is responsible for developing the core modules of the exchange, which include the matching engine, real-time market data streaming, and market data analysis. These modules form the foundation of our industry-leading trading product, serving millions of users.
What You’ll Be Doing
- Design and implement innovative solutions for our comprehensive range of trading products, such as spot, futures, perpetual swaps, and options.
- Create a robust real-time market data gateway.
- Optimize the performance of the trading architecture to achieve low latency, high availability, and scalability.
What We Look For In You
- Strong background in STEM (Science/Technology/Engineering/Mathematics) education or relevant work experience.
- Excellent logical thinking and problem-solving skills.
- Proficiency in high-performance Java programming, asynchronous programming patterns, and network programming.
- Experience working with distributed systems and microservice architecture.
- Familiarity with automated testing and continuous integration practices.
- Fluent in spoken and written Chinese, as the role involves communication with engineers in China.
Nice to Haves
- Knowledge and experience in financial services protocols such as FIX, SBE, ProtoBuf, or similar. Exposure to low latency messaging frameworks like Aeron and Chronicle Queue.
- Interest in gaining knowledge about various aspects of trading products in financial and crypto markets, including spot, futures, swaps, options, and structured products.
Perks & Benefits
- Competitive total compensation package
- Learning & Development programs and Education subsidy for personal growth and development
- Various team building programs and company events
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