About this role
Who We Are
Responsibilities
System Architecture: Lead the design and implementation of highly scalable, secure backend services for OKX Wallet and payment infrastructure.
On-Chain Integration: Build and maintain robust interfaces with the EVM ecosystem and emerging high-performance chains (Solana, Sui, Aptos).
Payment Engineering: Develop secure and efficient transaction processing systems, merging traditional payment reliability with blockchain transparency.
Problem Solving: Act as a technical pillar for the team, identifying and resolving complex production issues, performance bottlenecks, and security vulnerabilities.
Innovation: Drive the adoption of Account Abstraction (AA) and other cutting-edge EIPs to enhance the user experience of decentralized finance.
Requirements
Senior Engineering Background: Extensive experience in Java development with a proven track record of managing high-traffic, mission-critical production environments.
Web3 Native: Deep expertise in the EVM ecosystem. You should be comfortable with on-chain data structures, transaction lifecycles, and smart contract interactions.
Multi-Stack Proficiency: While Java is our core, familiarity with Go or Rust is highly preferred to support our multi-language infrastructure.
Crypto Passion: You are a "Chain Surfer." You stay updated on the latest DeFi trends, use dApps personally, and have an unshakable belief in the future of the industry.
Soft Skills: High energy, proactive ownership ("Get Things Done"), and the ability to thrive in a fast-paced, evolving environment.
Nice-to-Haves
Advanced Wallet Tech: Deep understanding of Account Abstraction (ERC-4337), EIP-7702, or MPC/TSS wallet architectures.
Multi-Chain Expertise: Hands-on experience with non-EVM chains like Solana, Sui, or Aptos.
Payment Industry Experience: Prior background in traditional FinTech, clearing/settlement systems, or payment gateways.
Polyglot Developer: Ability to contribute to our Rust or Go-based microservices.
Perks & Benefits
- Competitive total compensation
- Comprehensive insurance coverage for employees and their dependants
- More that we love to tell you along the process!
Disclaimer: Please note that Hong Kong is a group-level service hub, and OKX does not carry on a business of operating a virtual asset trading platform in Hong Kong.
Other facts
About OKX
At OKX, we believe that the future will be reshaped by Crypto, ultimately contributing to every individual's freedom.
OKX began as a crypto exchange giving millions of people access to crypto trading and over time becoming among the largest platforms in the world. In recent years, we have developed one of the most connected Web3 wallets used by millions to access decentralized crypto applications (dApps).
OKX is a trusted brand by hundreds of large institutions seeking access to crypto markets on a reliable platform that seamlessly connects with global banking and payments. In the last year, OKX has expanded into new markets including Australia, Brazil, Netherlands, Singapore and Turkey, with plans to launch in the US, Belgium and the UAE.
We are deeply committed to shaping a fairer, more transparent and accessible society through blockchain technology. This is why we publish proof of reserves monthly, and continue to ship new innovative security features.
We believe in good sportmanship and the pursuit to be better. You may see our OKX logo neatly fitted on the McLaren F1 cars, Manchester City FC team shirts, or at the Tribeca Film Festival celebrating artists and creators. Wherever you may find us, you will notice our pursuit of making our world more efficient, transparent, and connected.
To learn more about OKX, download our app or visit: www.okx.com
UK users follow: https://www.linkedin.com/company/okxuk/
Learn more about working at OKG, the business group developing OKX, our Digital Assets Exchange, our Web3 portal and blockchain ecosystems: bit.ly/WorkingatOKG
What you'll do
- Lead the design and implementation of scalable backend services for OKX Wallet and payment infrastructure. Act as a technical pillar for the team, resolving complex production issues and driving innovation in decentralized finance.
Ready to join OKX?
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