Senior Engineer - Platform Risk(Java)
Who We Are
At OKX, we believe that technology is reshaping our future. Founded in 2017, OKX is a leading cryptocurrency spot and derivatives exchange that has embraced blockchain technology. We offer a wide range of diverse and advanced products, solutions, and trading tools in the financial ecosystem. With over 20 million users in 180 regions, our goal is to provide a platform that empowers individuals to explore the world of crypto. In addition to our exchange, we have OKX Insights, a research arm focused on the latest trends in the cryptocurrency industry. Our vision is to create a world of financial access backed by blockchain and decentralized finance.
We value our people as much as technology. Our culture promotes teamwork, embraces change, and fosters a friendly and diverse environment for our employees. We believe in creating equal opportunities for everyone to develop and thrive.
About the Platform Tool Team
The Platform Tool team is responsible for providing infrastructure support to different teams within OKX. This includes message delivery abilities such as email, push notifications, and SMS, as well as managing the notification center and verification codes. Our aim is to help the tech teams streamline their work and improve their development efficiency.
What You’ll Be Doing:
- Coordinating the backend requirements, technical design, and development of the message delivery business.
- Optimizing system performance, solving technical problems, and ensuring high availability, reliability, and performance.
- Driving workflow optimization, improving cross-team communication, and enhancing team collaboration.
- Leading the team in technology reserves, taking on team responsibilities, and nurturing technical talent.
What We Look For In You:
- Strong foundation in Java, with a deep understanding of JVM configuration optimization, IO, multi-threading, concurrent frameworks, data structures, algorithms, and design patterns. Demonstrating good programming practices and substantial work experience.
- Familiarity with common middleware such as MQ, RPC, caching, message queues, and MySQL.
- In-depth understanding of distributed system principles, including CAP theorem, consistency, and idempotent operations.
- Clear logical thinking, agile mindset, and excellent communication skills.
- Strong team management and architectural design capabilities, with preference for those with team management experience.
- Preferred experience in integrating and developing platforms for email, SMS, push notifications, etc.
Perks & Benefits
- Competitive total compensation
- Comprehensive insurance coverage for employees and dependants
- More benefits to be communicated during the hiring 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