Senior/Staff Engineer - Web3 - Onchain Data

As a Senior or Staff Engineer on OKX's Onchain Data team, you'll build the core data and technology infrastructure behind OKX Web3. You connect to diverse blockchain networks, collect, process, and serve large-scale onchain data to power Wallet, DEX, Explorer, Risk, CeFi, and AI products across the global OKX ecosystem.

What you'll do

• Design, build, and evolve onchain data infrastructure, data services, or business systems, taking ownership of critical modules and their outcomes.
• Build multi-chain ingestion, real-time and batch computation, data governance, search, storage, and serving capabilities, continuously improving data accuracy, completeness, and freshness.
• Contribute to blockchain explorers, the Project Marketplace, onchain assets, labels, risk control, DEX rankings, token scoring, and related platforms or products.
• Identify critical technical and business problems, design solutions, coordinate resources, drive execution, and review outcomes.
• Build highly available, high-performance, scalable global systems, continuously improving reliability, cost efficiency, delivery efficiency, and user experience.
• Use AI tools deeply and explore agents, intelligent investigation, engineering automation, and intelligent operations, turning successful practices into reusable team capabilities.
• Collaborate with product, data, security, algorithm, operations, and engineering teams to drive cross-functional initiatives to completion.

What you bring

• Strong computer science fundamentals and coding ability in at least one mainstream programming language such as Java, Go, Python, or C++.
• Clear logical thinking and strong problem decomposition skills, with the ability to independently solve complex technical or business problems.
• Hands-on experience in one or more of: backend and distributed systems, real-time or batch data processing, data platforms, search and storage, high-concurrency and high-availability systems, reliability engineering, risk control or security, or AI agents and LLM applications.
• A strong sense of ownership and accountability, with the ability to drive initiatives through to measurable outcomes.
• Open, direct, and effective communication, with a willingness to solve problems across teams.
• Strong learning ability and growth potential.
• Curiosity about AI, Web3, emerging technologies, and new business domains, with the ability to learn unfamiliar areas quickly.
• The ability to quickly understand complex technical and business problems, build a structured mental model, and identify the core issue and key trade-offs.

Nice to have

• Experience with Web3, public blockchains, onchain data, wallets, DEXs, blockchain explorers, or smart contracts.
• Familiarity with one or more blockchain technology models such as EVM, UTXO, or Move.
• Experience with large-scale data processing, stream processing, databases, messaging systems, caching, or search systems.
• Experience in fintech, risk control, security, e-commerce, advertising, recommendation systems, or other complex internet businesses.
• Proven examples of using AI tools to solve real problems and turning solutions into engineered or scalable capabilities.
• Ability to work in English or experience building global and multi-region systems.
• Demonstrated technical judgment, business impact, or zero-to-one ownership in previous projects.

What we offer

• Competitive total compensation package
• Learning and development programs and education subsidy for your growth and development
• Various team building programs and company events
• Wellness and meal allowances
• Comprehensive healthcare schemes for you and your dependants
• Career opportunities across Mainland China, Hong Kong SAR, and Singapore

About OKX

OKX is a leading crypto exchange and developer of OKX Wallet, giving millions access to crypto trading and decentralized applications. OKX is trusted by hundreds of large institutions and is part of OKG, a group that brings blockchain value to users worldwide through products including OKX, OKX Wallet, and OKLink. The company operates globally with shared core principles of We Before Me, Do the Right Thing, and Get Things Done.