Senior Engineer - Frontend (Web3)
Who We Are
At our company, we understand the transformative power of technology. Established in 2017, we are a prominent cryptocurrency exchange offering a variety of spot and derivatives services. Our use of blockchain technology has revolutionized the financial landscape, providing users with diverse products, solutions, and tools. With over 20 million users across 180 regions worldwide, our platform aims to empower individuals to explore the crypto world. We also offer OKX Insights, a research arm that stays ahead of cryptocurrency industry trends. Committed to innovation, we envision a financial world supported by blockchain and decentralized finance.
We value our team members as much as we value technology. Our culture fosters collaboration, adaptability, and integrity, ensuring that every individual feels respected and supported. We strive to create a welcoming, inclusive environment where everyone has equal opportunities to grow and succeed.
About the Opportunity
As a frontend developer with us, you will collaborate with a skilled team to enhance a variety of products for our top-notch digital asset trading platform with millions of active users, focusing on performance optimization.
Primary Responsibilities
- Lead technical planning, design, and development for the frontend of our core financial products.
- Ensure system stability, security, and user experience excellence.
- Optimize frontend execution and rendering performance to prevent system freezing and reduce CPU and memory usage.
- Stay current on emerging technologies and trends, conducting research to maintain industry-leading standards.
- Continuously refine existing systems through code optimizations, focusing on readability, maintainability, and scalability.
Qualifications
- Bachelor's degree or higher from a reputable institution, coupled with substantial frontend experience.
- Proficiency in HTML5, CSS3, and JavaScript.
- Strong understanding of MVVM and proficiency in React and Vue frameworks.
- Solid engineering skills with a focus on efficiency improvement.
- Excellent problem-solving abilities and issue identification skills.
- Backend technology proficiency (Java, Node.js, PHP) with knowledge of frontend-backend interactions.
- Passion for technology and a dedication to excellence.
Desired Skills
- Experience in the financial industry is preferred.
- Knowledge of front-end performance optimization is highly desired.
- Prior experience with Web3 projects is advantageous.
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