(Senior) Middleware Development Engineer
Who We Are:
At OKX, we believe in the transformative power of technology. Established in 2017, OKX is a leading global exchange for cryptocurrency spot and derivatives trading. By leveraging blockchain technology, OKX is reshaping the financial landscape through 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 empower everyone to explore the world of crypto. In addition to our exceptional DeFi exchange, OKX also offers OKX Insights, a research arm dedicated to staying at the forefront of the cryptocurrency industry. Through our diverse range of crypto services and unwavering commitment to innovation, our vision is to create a world of financial access driven by blockchain and decentralized finance.
We invest in both our people and technology. Our culture fosters teamwork, embraces change, and values integrity. We are dedicated to creating a welcoming, rewarding, and diverse environment for all employees. Regardless of your background, we ensure that each individual feels valued, respected, and provided with equal opportunities to grow and succeed. We are here to bring out the best in you.
About the Opportunity:
What You’ll Be Doing:
- Develop distributed system infrastructure, including frameworks, micro-service components, middleware, and storage.
- Ensure reliable and stable online services through service management, performance optimization, elastic computing, chaos engineering, and security defense.
- Collaborate with business, testing, and operations teams to complete assigned tasks.
- Research and explore new technologies in the field to maintain technical advancement.
What We Look For In You:
- Bachelor's degree or higher in computer science or related fields.
- Solid understanding of distributed systems design, preferably with knowledge of middleware.
- Proficient in Java development and its underlying principles.
- Excellent communication skills, a passion for technology, and a belief in the future of the crypto industry.
Perks & Benefits:
- Competitive total compensation package.
- Comprehensive insurance coverage for employees and their dependents.
- Additional perks and benefits revealed during the application process.
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