8 Blockchain Engineer jobs in Hong Kong

Hong Kong, Hong Kong SAR

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.

We are seeking a talented and experienced Blockchain Developer to join X Layer. As a Blockchain Developer, you will be responsible for designing, implementing, and maintaining blockchain-based solutions. Additionally, you will provide support for hackathons to encourage innovation and collaboration within the X Layer community and contribute to the Polygon CDK.

What You’ll Be Doing:

• Blockchain Development: Design, develop, and deploy blockchain solutions. Write clean, efficient, and maintainable code in languages such as Go, Solidity, or Rust, C++ depending on the blockchain platform being used.
• Performance Optimization: Analyze and optimize the performance of blockchain networks, including transaction throughput and latency, to enhance scalability and efficiency.
• Smart Contract Development: Create, test, and deploy smart contracts on various blockchain platforms, ensuring security and efficiency.
• Architecture Design: Collaborate with architects and software engineers to design scalable and secure blockchain architectures that meet business and technical requirements.
• Documentation: Create technical documentation, including design specifications, development guides, and API references, to ensure proper usage and maintenance of blockchain solutions.

What We Look For In You:

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
• Proficiency in programming languages such as Go or C++.
• Hands-on experience with blockchain platforms like Ethereum, Cosmos, Bitcoin, EVM or WebAssembly virtual machine.
• Strong problem-solving and analytical skills, with the ability to design and develop efficient blockchain solutions.
• Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.

Nice to have:

• Hands-on experience with L2 platforms such as Polygon ZKEvm, ZKSync Era, Linea, Taiko, Scroll, etc.
• Familiar with performance optimization tools such as Gperftools, Profiler, Flamegraph, Pprof, etc., and have experience in performance optimization development in actual projects. Experience in zk GPU acceleration is preferred.
• Familiarity with smart contract development tools and frameworks (e.g., Truffle, Remix, Web3.js).
• Proficiency in programming languages Rust.
• Experience in zero-knowledge proof development, especially zkvm, and familiarity with principles of plonk/halo2/KZG/FRI and related libraries or circuit development languages, such as plonky2, Circum, gnark.

Comprehensive insurance coverage for employees and their dependants.

1 week ago Be among the first 25 applicants

We are seeking a Blockchain Solutions Engineer/Developer Relations Engineer to join our vibrant blockchain team. As a Blockchain Solutions Engineer, you will be the bridge between blockchains and the broader developer community. Your mission is to foster strong relationships with developers, providing them with the tools, resources, and support to thrive within the blockchain ecosystem. This position requires a keen interest in blockchain technology, a collaborative spirit, and a commitment to providing exceptional technical support and guidance.

About the role

We are seeking a Blockchain Solutions Engineer/Developer Relations Engineer to join our vibrant blockchain team. As a Blockchain Solutions Engineer, you will be the bridge between blockchains and the broader developer community. Your mission is to foster strong relationships with developers, providing them with the tools, resources, and support to thrive within the blockchain ecosystem. This position requires a keen interest in blockchain technology, a collaborative spirit, and a commitment to providing exceptional technical support and guidance.

• Seniority level Not Applicable

• Employment type Full-time

• Job function Engineering and Information Technology

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Wan Chai District, Hong Kong SAR 6 days ago

Shenzhen, Guangdong, China CN¥15,000.00-CN¥30,000.00 1 year ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

1 week ago Be among the first 25 applicants

We are seeking a Blockchain Solutions Engineer/Developer Relations Engineer to join our vibrant blockchain team. As a Blockchain Solutions Engineer, you will be the bridge between blockchains and the broader developer community. Your mission is to foster strong relationships with developers, providing them with the tools, resources, and support to thrive within the blockchain ecosystem. This position requires a keen interest in blockchain technology, a collaborative spirit, and a commitment to providing exceptional technical support and guidance.

About the role

We are seeking a Blockchain Solutions Engineer/Developer Relations Engineer to join our vibrant blockchain team. As a Blockchain Solutions Engineer, you will be the bridge between blockchains and the broader developer community. Your mission is to foster strong relationships with developers, providing them with the tools, resources, and support to thrive within the blockchain ecosystem. This position requires a keen interest in blockchain technology, a collaborative spirit, and a commitment to providing exceptional technical support and guidance.

• Seniority level Not Applicable

• Employment type Full-time

• Job function Engineering and Information Technology

Referrals increase your chances of interviewing at Crypto.com by 2x

Wan Chai District, Hong Kong SAR 6 days ago

Shenzhen, Guangdong, China CN¥15,000.00-CN¥30,000.00 1 year ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

Join to apply for the Senior Engineer - Web3 Application - Blockchain Wallet role at OKX

2 weeks ago Be among the first 25 applicants

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). We are backed by our Proof of Reserves, ensuring safety and reliability. Our core principles—We Before Me , Do the Right Thing , and Get Things Done —guide our culture and environment across our global offices.

About The Opportunity

What You’ll Be Doing:

• Develop blockchain application layer business services (web3 wallet, staking, DeFi protocols, etc.)
• Optimize system performance, conduct R&D to ensure high availability, reliability, and performance
• Identify service optimization points and improve engineering efficiency
• Translate business and product requirements into functional and architecture designs

What We Look For In You

• Solid Java programming experience, understanding of JVM, multi-threading, collections, and IO
• Bachelor's degree or higher in computer science, software engineering, or related field
• Proficient in frameworks like SpringBoot and Mybatis
• Experience with databases such as MySQL, Redis, Elasticsearch, HBase, Kafka, or Middleware
• Strong interest in technology, good learning ability, and broad vision
• Experience with blockchain platforms (Bitcoin, Ethereum) or DeFi projects (MakerDao, Uniswap, etc.)
• High industry sensitivity and ability to lead team in blockchain trends

Nice to Have

• Experience in high-concurrency, high-availability, high-performance projects
• Knowledge of blockchain technologies (BTC, ETH, Cosmos, Dot) or DeFi projects
• Lively personality, good communication skills, project management experience
• Proficiency in C++, Go, or TypeScript

Perks & Benefits

• Competitive compensation
• Comprehensive insurance for employees and dependents
• Additional benefits shared during the hiring process

• Mid-Senior level

• Full-time

• IT Services and IT Consulting

Referrals can double your chances of interview success at OKX.

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Kwun Tong District, Hong Kong SAR 7 months ago

Join to apply for the Senior Engineer - Web3 Application - Blockchain Wallet role at OKX

2 weeks ago Be among the first 25 applicants

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). We are backed by our Proof of Reserves, ensuring safety and reliability. Our core principles—We Before Me, Do the Right Thing, and Get Things Done—guide our culture and environment across our global offices.

About The Opportunity

What You’ll Be Doing:

• Develop blockchain application layer business services (web3 wallet, staking, DeFi protocols, etc.)
• Optimize system performance, conduct R&D to ensure high availability, reliability, and performance
• Identify service optimization points and improve engineering efficiency
• Translate business and product requirements into functional and architecture designs

What We Look For In You

• Solid Java programming experience, understanding of JVM, multi-threading, collections, and IO
• Bachelor's degree or higher in computer science, software engineering, or related field
• Proficient in frameworks like SpringBoot and Mybatis
• Experience with databases such as MySQL, Redis, Elasticsearch, HBase, Kafka, or Middleware
• Strong interest in technology, good learning ability, and broad vision
• Experience with blockchain platforms (Bitcoin, Ethereum) or DeFi projects (MakerDao, Uniswap, etc.)
• High industry sensitivity and ability to lead team in blockchain trends

Nice to Have

• Experience in high-concurrency, high-availability, high-performance projects
• Knowledge of blockchain technologies (BTC, ETH, Cosmos, Dot) or DeFi projects
• Lively personality, good communication skills, project management experience
• Proficiency in C++, Go, or TypeScript

Perks & Benefits

• Competitive compensation
• Comprehensive insurance for employees and dependents
• Additional benefits shared during the hiring process

• Mid-Senior level

• Full-time

• IT Services and IT Consulting

Referrals can double your chances of interview success at OKX.

Get notified about new Senior Software Engineer jobs in Hong Kong, Hong Kong SAR .

Kwun Tong District, Hong Kong SAR 7 months ago

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Ceffu is an institutional custody platform on a mission to propel the adoption and active participation of institutional investors in the digital asset ecosystem. With world-class security and liquidity solutions, Ceffu provides a unique gateway to the world’s deepest liquidity as the only institutional crypto custody partner of the Binance Exchange, positioning itself as one of the leading global institutional custody technology providers. Visit for more information.

• This is a fully remote role

Job Responsibilities:

• Work closely with team members (developers, product manager, customer support and partners) to develop, test and deliver high quality products
• Create detailed, comprehensive and well-structured test plans and test cases
• Prevent, report, analyze and track issues in an effective and efficient manner
• Root cause analysis of existing script failures or product issues, propose and drive enhancement for minimizing project issues or risks
• Design, develop and execute automation scripts or implement quality tools to continuously increase efficiency

Skills and Experience required:

• More than 5 years of experience in software testing methodologies, both manual and automated
• Prior working experience for banks, payment systems or fund security testing is a big plus
• Experience in writing clear and comprehensive test plans and test cases
• Experience testing backend services such as APIs, distributed services
• Familiar with AWS and database operation
• Familiar with test environment construction with CICD
• Good programming ability, master at least one of Java, Python and other programming languages
• Strong analytical and trouble-shooting skills
• Experience working in an Agile/Scrum development process
• Good interpersonal, consultative and communication skills
• Self-managed, proactive work style and good commitment

• Mid-Senior level

• Full-time

• Information Technology

• Technology, Information and Internet, Financial Services, and Internet Marketplace Platforms

This job posting appears to be active and relevant. It is well-structured and clearly communicates the role, responsibilities, and requirements.

Get AI-powered advice on this job and more exclusive features.

Ceffu is an institutional custody platform on a mission to propel the adoption and active participation of institutional investors in the digital asset ecosystem. With world-class security and liquidity solutions, Ceffu provides a unique gateway to the world’s deepest liquidity as the only institutional crypto custody partner of the Binance Exchange, positioning itself as one of the leading global institutional custody technology providers. Visit for more information.

• This is a fully remote role

Job Responsibilities:

• Work closely with team members (developers, product manager, customer support and partners) to develop, test and deliver high quality products
• Create detailed, comprehensive and well-structured test plans and test cases
• Prevent, report, analyze and track issues in an effective and efficient manner
• Root cause analysis of existing script failures or product issues, propose and drive enhancement for minimizing project issues or risks
• Design, develop and execute automation scripts or implement quality tools to continuously increase efficiency

Skills and Experience required:

• More than 5 years of experience in software testing methodologies, both manual and automated
• Prior working experience for banks, payment systems or fund security testing is a big plus
• Experience in writing clear and comprehensive test plans and test cases
• Experience testing backend services such as APIs, distributed services
• Familiar with AWS and database operation
• Familiar with test environment construction with CICD
• Good programming ability, master at least one of Java, Python and other programming languages
• Strong analytical and trouble-shooting skills
• Experience working in an Agile/Scrum development process
• Good interpersonal, consultative and communication skills
• Self-managed, proactive work style and good commitment

• Mid-Senior level

• Full-time

• Information Technology

• Technology, Information and Internet, Financial Services, and Internet Marketplace Platforms

This job posting appears to be active and relevant. It is well-structured and clearly communicates the role, responsibilities, and requirements.