Senior/Staff Engineer - Web3 - Onchain Data

Engg; Singapore; On-site; SGD 120,000 - 200,000; Full time

Job summary

OKX's Onchain Data Team seeks engineers to build core data infrastructure for real-time and batch processing across diverse blockchains, enabling accurate, scalable data services for Wallet, DEX, and AI products.

You will work on risk detection, explorers, and data APIs, contributing to a high-concurrency, global platform and leveraging AI to automate operations and drive reliability.

Qualifications

• Strong computer science fundamentals and coding ability in at least one mainstream programming language

Responsibilities

• 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.

Skills

Java

Go

Python

C++

Job description

Who We Are 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.

About the Onchain Data Team

The Onchain Data team builds the core data and technology infrastructure behind OKX Web3. We connect to diverse blockchain networks and collect, process, govern, interpret, and serve large-scale onchain data, delivering accurate, real-time, and reliable capabilities to Wallet, DEX, Explorer, Risk, CeFi, and AI products. Our scope includes, but is not limited to:

• Multi-chain data ingestion, parsing, computation, and unified data models


• Data capabilities for onchain assets, transactions, addresses, tokens, contracts, and projects


• Blockchain explorers, the Project Marketplace, Onchain Data APIs, bots, and agents


• Labels, risk detection, risk-control data, and security investigation capabilities


• DEX trending rankings, token scoring, and other onchain data products


• Global multi-region deployment, high-availability architecture, performance optimization, and system reliability


• Deep application of AI in engineering, data analysis, risk investigation, and intelligent operations

You will work on challenges involving heterogeneous chains, large-scale data, real-time computation, high concurrency, high availability, data accuracy, and complex cross-functional collaboration. Your work can directly improve user experience, asset security, and business growth.

What You May Work On

This is a broad hiring track rather than a single fixed role. Your responsibilities will be matched to your strengths, experience, and interests, and may include one or more of the following:

• 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 We Value Most

Hunger — Curiosity and Drive: You stay curious about AI, Web3, emerging technologies, and new business domains, and can learn unfamiliar areas quickly. You do not wait for instructions when facing a problem; you proactively understand the context, identify solutions, and drive execution. You go beyond completing assigned tasks and continue to ask about outcomes, user value, and opportunities for improvement.

Cognition — Cognitive Ability and Judgment: 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 can form sound judgments based on facts and logical reasoning. You can compare the value, cost, risk, and long-term impact of different options, clearly explain your rationale, and turn decisions into executable plans and results.

What We Are Looking For

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, high-availability systems, and reliability engineering; Risk control, security, strategy, or data analysis; AI agents, 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. We value solid engineering fundamentals, but do not use mastery of one specific framework or middleware stack as the sole hiring criterion.

Preferred Qualifications

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