Senior/Staff Engineer - Web3 - Onchain Data

As a Senior or Staff Engineer on OKX's Onchain Data team, you build the core data and technology infrastructure behind OKX Web3. The team connects to diverse blockchain networks and collects, processes, governs, interprets, and serves large-scale onchain data to power Wallet, DEX, Explorer, Risk, CeFi, and AI products across the OKX ecosystem. You will tackle challenges involving heterogeneous chains, large-scale data, real-time computation, high concurrency, and high availability, with work that directly improves user experience, asset security, and business growth.

What you'll do

• Design, build, and evolve onchain data infrastructure, data services, or business systems, taking ownership of the quality and outcomes of critical modules
• 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, make sound judgments, design solutions, coordinate resources, drive execution, and review outcomes
• Build highly available, high-performance, scalable global systems while 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 the following areas: backend and distributed systems, real-time or batch data processing, data platforms, search and storage, high-concurrency and high-availability systems and reliability engineering, risk control or security, AI agents or LLM applications, or engineering productivity
• 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 with solid engineering fundamentals
• You stay curious about AI, Web3, and emerging technologies, and can learn unfamiliar areas quickly
• You proactively understand context, identify solutions, and drive execution without waiting for instructions
• You can quickly understand complex technical and business problems, build a structured mental model, and identify the core issue and key trade-offs
• When information is incomplete or the situation is uncertain, you form sound judgments based on facts and logical reasoning

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 employees and 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 seeking access to crypto markets and is part of OKG, a group that brings blockchain value to users worldwide through products including OKX, OKX Wallet, and OKLink. Across multiple global offices, OKX is united by core principles of We Before Me, Do the Right Thing, and Get Things Done.