What Jobs are available for Blockchain Technology in Hong Kong?

Flow Traders is looking for an experienced Back-End Blockchain Engineer to join our growing Digital Assets Technology team in Hong Kong. This is a unique opportunity to work at a leading proprietary trading firm with an entrepreneurial and innovative culture. We value sharp, creative minds and challenge our engineers to leverage their full potential in a high-performance environment.

What You Will Do

• Work closely with trading desks to develop scalable and low-latency solutions for DEX Trading
• Contribute to the architecture and development of high-performance, real-time trading systems for DeFi markets
• Encourage the team to grow our Blockchain understanding bringing in protocol-specific knowledge and best practices
• Develop and maintain on-chain and off-chain components, including smart contracts, indexers, and market-making bots
• Implement robust APIs and integrate with DeFi protocols, liquidity pools, and decentralized exchanges (DEXs)
• Design and optimize event-driven microservices for real-time blockchain transaction processing
• Ensure high availability, reliability, and security of blockchain-based back-end systems
• Collaborate with Quantitative Researchers, Traders, and Software Engineers to identify and implement automation and acceleration strategies for the Digital Assets desk
• Follow the best software engineering practices which are supported by the best working environment, latest technology and continuous support from all parts of Flow Traders organization

What You Need to Succeed

• BSc, MSc, or PhD in Computer Science, Software Engineering, or related fields
• 5+ years of commercial experience in software development
• Strong expertise in one or more back-end programming languages: Python, Rust, Go, Java
• Solid experience in DeFi development (protocol interactions, arbitrage, liquidity management).
• Strong blockchain knowledge, including nodes, consensus mechanisms (PoW, PoS), and Web3
• Experience with smart contract development in Solidity and/or Rust
• Deep understanding of backend architecture, including scalable distributed systems, microservices, and event-driven processing
• Hands-on experience with cloud infrastructure (AWS, GCP, or Azure) and containerization (Docker, Kubernetes)
• Understanding of security best practices in blockchain and back-end development (e.g., private key management, transaction signing, API security)
• Familiarity with Kafka, Redis, gRPC, and WebSockets for real-time data processing
• Experience working with on-chain data analysis, indexers, and oracles, a plus
• Knowledge of MEV (Maximal Extractable Value) strategies and blockchain transaction ordering, a plus
• Prior experience working in low-latency, high-performance trading environment, a plus

What We Offer

We like to think that talent grows at Flow and stays at Flow. To ensure this, we provide our employees with an extensive onboarding program, access to Flow Academy, the best working environment, the latest technology and continuous support. We go out of our way to retain the small business feeling with which we started and stimulate innovation and collaboration through teamwork and our non-hierarchical approach. We offer competitive salary, annual discretionary bonus and other fantastic perks and benefits, such as:

• Flow Academy for continuous learning and opportunities to attend domain-related conferences
• Comprehensive health insurance coverage
• In-house lounge with a bar, pool table and console games
• Daily catered breakfast and lunch with healthy snacks and drinks available throughout the day
• In-house hairdresser and massage therapist
• Personal trainers, weekly boot camps and a subsidized gym membership
• Annual company trip and a variety of events throughout the year
• Global rotations between our offices worldwide
• and more

Flow Traders does not accept unsolicited resumes from any professional staffing or search firms. All resumes, and any other information identifying potential candidates, submitted to any employee at Flow Traders via-email, the Internet or directly without a valid and signed search agreement will be deemed free to contact by Flow Traders without any restrictions and no placement fee of any kind will be paid in the event the candidate is hired by Flow Traders.

1. Develop and maintain core custodial wallet modules including account management, deposit, withdrawal, sweeping, signing, and transaction broadcasting.
2. Integrate multiple blockchain protocols (BTC, ETH, Solana, Tron, Cosmos, etc.) through RPC, SDKs, or in-house solutions to ensure stable and high-availability operations.
3. Participate in the architecture and modular design of the wallet system to enhance scalability, reliability, and performance.
4. Implement automated monitoring, alerting, and logging systems for full traceability of asset flows.
5. Write high-quality, testable code; participate in code reviews and CI/CD processes.
6. Collaborate cross-functionally with frontend, DevOps, security, and risk teams to ensure overall system performance and security.

1. Bachelor's degree or above in Computer Science, Information Security, or related fields.
2. 3+ years of backend development experience, with at least 1 year in blockchain wallet or node integration.
3. Proficiency in one or more backend languages , Golang, Java, Rust, Python).
4. Solid understanding of blockchain architecture, transaction mechanisms, and concepts such as block structure, gas/fees, and nonces.
5. Familiarity with microservices, message queues (Kafka / RabbitMQ), caching (Redis), and databases (MySQL / PostgreSQL).
6. Strong security awareness with understanding of key management, signing, and permission control.

Nice to Have:

1. Experience integrating multi-chain protocols (BTC UTXO, ETH EVM, Solana, etc.).
2. Knowledge of MPC, HSM, KMS, or TEE technologies.
3. Fluent in English and Chinese, with the ability to collaborate in a global team.

Binance is a leading global blockchain ecosystem behind the world's largest cryptocurrency exchange by trading volume and registered users. We are trusted by over 280 million people in 100+ countries for our industry-leading security, user fund transparency, trading engine speed, deep liquidity, and an unmatched portfolio of digital-asset products. Binance offerings range from trading and finance to education, research, payments, institutional services, Web3 features, and more. We leverage the power of digital assets and blockchain to build an inclusive financial ecosystem to advance the freedom of money and improve financial access for people around the world.

Responsibilities

• Responsible for the acquisition and analysis of blockchain data.
• Responsible for iterative development, deployment of products and online problem solving, performance tuning, etc.
• Coordinate with other blockchain engineers to understand and implement the latest blockchain technologies.
• Investigate, troubleshoot, and solve technical issues related to the product.
• Participate in on-call rotation for emergency incidents related to the systems in charge.
• Coordinate with the product team to implement new features and optimize existing ones.

Qualifications

• Bachelor's degree or above, 6+ years of software development experience.
• Understand the implementation principle of blockchain technology, such as Bitcoin, Ethereum, Super Ledger and EOS.
• Possess knowledge or experience in big data, have project experience related to web scraping.
• Proficient in Spring Cloud, Spring Boot, MyBatis, Kafka, Redis, MySQL, Tomcat.
• Excellent communication and teamwork skills; enjoys delving into new technologies.
• Proficiency in both english and mandarin is required to communicate effectively with both english and mandarin speaking stakeholders.

Why Binance

• Shape the future with the world's leading blockchain ecosystem
• Collaborate with world-class talent in a user-centric global organization with a flat structure
• Tackle unique, fast-paced projects with autonomy in an innovative environment
• Thrive in a results-driven workplace with opportunities for career growth and continuous learning
• Competitive salary and company benefits
• Work-from-home arrangement (the arrangement may vary depending on the work nature of the business team)

Binance is committed to being an equal opportunity employer. We believe that having a diverse workforce is fundamental to our success.

By submitting a job application, you confirm that you have read and agree to our
Candidate Privacy Notice
.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

• Lead the design and implementation of core DeFi protocol modules.
• Develop and maintain secure, efficient smart contracts in Solidity or Rust.
• Optimize contract gas costs and runtime performance across multiple blockchains.
• Design and implement cross-chain interoperability and deployment strategies.
• Establish DeFi protocol security standards, identify risks, and develop mitigation strategies.
• Translate financial models (collateral, liquidation, incentives) into on-chain logic.
• Collaborate with product, risk, frontend, and security teams for end-to-end project delivery.
• Mentor junior engineers and perform code reviews to improve the team's coding quality.

Requirements

• Bachelor's degree or above in Computer Science, Information Security, or related fields.
• 3+ years of experience in smart contract or blockchain development.
• Deep expertise in Solidity or Rust and strong understanding of EVM mechanics and DeFi architecture.
• Hands-on mainnet deployment experience with full project lifecycle ownership.
• Familiarity with major DeFi mechanisms such as AMM, lending, yield aggregation, and oracles.
• Knowledge of contract vulnerabilities and attack vectors (Reentrancy, Front-running, Oracle Manipulation).
• Understanding of cross-chain technologies and Layer2 scaling solutions.
• Strong system design and collaboration skills.

Nice to Have:

• Core contributor or key developer experience in well-known DeFi protocols.
• Familiarity with ZK, MEV protection, dynamic AMM, or DAO governance.
• Experience with audit tools (Slither, Foundry, Echidna, Mythril).
• Fluent in both English and Chinese; experience supporting global business is preferred.

Description:

• Working with the team to develop a high performance and scalable blockchain including storage design, consensus algorithm etc.
• Promoting Blockchain technologies both internally and externally, working closely with the development team for blockchain technology discussion
• Collaborating with global technology partners in industry and academia on joint projects
• Delivering the work in high quality and efficiency

Requirements:

• Degree holder in Information Systems, Computer Science or other related disciplines
• Fluent English and Mandarin communication is a must
• At least 1 year of relevant working experience and a Fresh graduate is welcome
• Good communication skills and good teamwork
• Intern experience in development would be a plus
• Knowledge in using programming languages, such as JavaScript, Java, Golang, or C++

We Offer:

• Flexible working hours (work from home occasionally)
• Convenient office location on Hong Kong Island
• Modern office environment; Friendly working environment
• Top-of-the-line equipment and tools to work with
• Medical Insurance Coverage

Responsibilities

• Responsible for the Web3.0 ecosystem and the Fintech related program.
• Elicit user requirements, perform analysis and feasibility study.
• Propose IT solutions on business requirements with appropriate technologies.
• Communicate and coordinate between business users and development teams.
• Lead, manage and implement Blockchain/Web3.0 related projects to ensure the timeliness and quality of deliverables.
• Monitor and Manage project processes, documentation, progress reporting, and status meeting.
• Work closely with users and vendors for system requirement analysis, effort estimation, design, implementation and testing on banking project.
• Liaison and coordinate effectively with both internal users and external vendors.
• Coordinate and execute user acceptance test.
• Support in daily operation.

Requirements

• Degree holder in Business Administration, Information Technology or related disciplines.
• Proven experience in project management/ business analysis/ application development, preferably within blockchain, Web3.0, or crypto-related industries.
• Strong understanding and knowledge in Internet, Web3.0 and blockchain technologies is required.
• Familiarity with smart contract development cycles, compliance, AML and regulatory considerations is highly preferred.
• Experience in vendor management is highly preferred.
• Excellent interpersonal skills and communication skills.
• Self-motivated, open mindset, ownership mindset, good problem solving and troubleshooting skills with strong "can-do" attitude.
• Deadline sensitive and able to work independently and under pressure.
• Proficiency in both Chinese and English, Mandarin is an advantage.

You will lead Web3 innovation by managing blockchain projects, driving collaboration, ensuring quality, and shaping the future of DeFi, NFTs, and decentralized tech.

• Project Planning & Execution: Develop detailed project plans, establish timelines, allocate resources, and define milestones for Web3 initiatives. Lead teams through all stages, from concept to launch.
• Cross-functional Coordination: Work closely with engineering, design, product, marketing, and community teams to align objectives and manage interdependencies in a fast-paced environment.
• Risk Management: Identify, evaluate, and mitigate risks related to smart contracts, blockchain integrations, and decentralized infrastructure.
• Stakeholder Management: Act as the main point of contact for both internal and external stakeholders, ensuring clear and timely communication about project progress, challenges, and deliverables.
• Quality Assurance: Supervise testing, audits, and security reviews, especially for smart contract deployments and on-chain features.
• Documentation: Maintain accurate and comprehensive documentation, including project specifications, progress updates, and user guides.
• Budget & Resource Tracking: Manage budgets, vendor relationships, and resource allocation to maximize operational efficiency.
• Community Engagement: Collaborate with community managers to align product development with the needs of token holders, users, and contributors.

• Bachelor's degree in Computer Science, Information Technology, Business, or a related field. Advanced degrees are a plus.
• Proven experience in project management, preferably within blockchain, Web3, or crypto-related industries.
• Strong knowledge of blockchain protocols, DeFi, NFTs, and DAOs.
• Familiarity with smart contract development cycles and open-source ecosystems.
• Understanding of compliance, KYC/AML, and regulatory considerations in crypto markets.
• Proficiency with agile methodologies, project management tools, and version control systems.
• Analytical mindset with a passion for emerging technologies and innovation.
• Ability to work independently in distributed and multicultural teams.

Blockchain Developer - High Frequency Trading

Hong Kong | Open to wider APAC location

We're looking for a hands-on engineer to build and run blockchain infrastructure that powers high-performance trading systems. You'll be diving into distributed systems, low-latency architecture, and next-gen blockchain protocols.

What You'll Be Doing

• Build and maintain robust blockchain infrastructure.
• Optimise systems for performance, reliability, and uptime.
• Work with secure computation environments.
• Automate deployments and manage infrastructure efficiently.
• Stay up-to-date with protocol changes, client updates, and ecosystem tools.
• Troubleshoot issues and drive continuous improvement.

What You Bring

• 4+ years in backend or infrastructure engineering, preferably with blockchain or crypto.
• Understanding of blockchain nodes, consensus mechanisms, and data structures.
• Experience with containerisation and cloud platforms.
• Strong Linux, networking, and observability skills.
• Programming/scripting in Python, Bash, Rust, or similar.

Bonus:
Trading system experience, open-source contributions, low-latency/high-availability

environments.

Please APPLY and one of the team will get in touch

Key Responsibilities:

• Collaborate with senior developers to design, build, and deploy secure blockchain solutions and smart contracts.
• Assist in writing, testing, and debugging smart contracts primarily on Ethereum.
• Participate in code reviews and team discussions on best practices, security, and emerging technologies.
• Support the integration of cryptocurrency payment systems into our applications.
• Conduct research on new blockchain technologies and industry trends.
• Document development processes and maintain project documentation.
• Learn and implement best practices in cryptography, consensus algorithms, and decentralized systems.

Required Qualifications & Experience:

• Bachelor's degree in Computer Science, Information Systems, Engineering, or a related field.
• 3-5 years of professional development experience, preferably gained within a bank, investment firm, or other relevant financial/business environment.
• Basic knowledge of one or more programming languages such as Solidity, Rust, JavaScript, Python, or Java.
• Familiarity with blockchain platforms (e.g., Ethereum, Hyperledger Besu, Solana).
• Understanding of blockchain fundamentals, cryptocurrencies, and decentralized applications (dApps).
• Experience with AWS cloud services (e.g., ECS) and containerization (e.g., Kubernetes).
• Knowledge of microservices architecture and Domain-Driven Design.
• Proficiency with Git for version control.