Senior Java Engineer, Wallet Smart Account Team job opportunity at OKX.



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OKX Senior Java Engineer, Wallet Smart Account Team
Experience: General
Pattern: full-time
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Salary:
Status:

Engineering

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degreeGeneral
loacation , SAR, Hong Kong
loacation , SAR....Hong Kong

Who We Are 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  At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more.   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.Notice: All official OKX vacancies are published on this website. While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated. If in doubt, please apply directly through our official careers website. Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to OKX's Candidate Privacy Notice.
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