Senior Backend Developer (Crypto)

freeC's Client

We are seeking an experienced and highly skilled to join our engineering team. You will be responsible for building and maintaining a high-performance crypto exchange platform, with a strong focus on security, scalability, and low-latency transaction processing.

Responsibilities:

System Development

• Design, build, and optimize a high-speed, low-latency crypto trading engine.
• Implement and improve order matching logic and real-time data services.

Wallet & Transaction Management

• Develop secure asset deposit and withdrawal services.
• Integrate and operate hot/cold wallet systems using MPC (Multi-Party Computation) technologies
• Architect and implement microservices for user management, order books, trade history, wallet services, etc.
• Optimize backend infrastructure to handle high throughput and concurrency.

Security & Stability

• Implement security layers to protect against financial system threats.
• Set up and maintain monitoring, logging, and alerting tools to ensure 24/7 system uptime.

API Development & Integration

• Build and maintain clear, well-documented public and partner APIs.
• Ensure API reliability and performance for real-time data and trading.

Job requirement

Domain Knowledge Requirements

• Hands-on experience operating and developing a crypto or financial trading platform.
• Deep understanding of:
• Order Book, Matching Engine, Liquidity, Market Making, Slippage.
• Order types: Market, Limit, Stop-limit.
• Experience in managing hot and cold wallets with MPC for secure asset handling.
• Strong knowledge of Custody systems and crypto asset security.
• Solid grasp of the end-to-end financial transaction flow, from order placement to settlement.
• Familiarity with common security vulnerabilities and countermeasures.

Required Skills

• 5+ years of experience in backend development for complex systems (preferably in FinTech, banking, or securities).
• Proficiency in a high-performance programming language: Go or Java.
• In-depth knowledge of Redis (in-memory databases) and message queue systems (Kafka, Redis Streams).
• Expertise in building RESTful APIs and WebSockets for real-time data.
• Solid understanding of microservices architecture, containerization (Docker, Kubernetes), and cloud platforms (AWS, GCP).
• Practical experience with MPC and Custody systems for cryptocurrency.

Nice to have

• Experience with blockchain development tools: Hardhat, Truffle, Ethers.js, Web3.js.
• Smart contract development using Solidity or Rust (Solana, Cosmos).

• Employee Support: Assistance with accommodation, living expenses, and work visa procurement for all staff.
• Home Visit Support: Financial assistance for employees to visit home fourth a year.
• Competitive Salary: A salary package that reflects your skills, experience, and contributions to the company.
• Essential Equipment: Provision of necessary work equipment, including a MacBook and iPhone.
• Development: Continuous development of hard and soft skills through work and professional training
• Holiday Bonus: A holiday and New Year bonus to recognize your hard work and dedication.
• Inclusive Environment: A professional, dynamic, and inclusive workplace culture that fosters collaboration and innovation.
• Life experience: Enjoy the new culture, living environment in Thailand.