Senior Backend Engineer - Singapore

Senior Backend Engineer

Location: Singapore (Remote)

Employment Type: Full-time

About the Product

UR is a borderless smart money app simplifying movement between digital assets and fiat currencies for crypto natives and curious users alike. It’s self-custodial, fast, and intuitive, making complex crypto workflows seamless.

Responsibilities

• Design and develop core backend systems handling high concurrency and high availability for millions of users.
• Build microservices using Go or Java to support fast business iteration and horizontal scalability.
• Participate in architecture design and integration of payment-related systems (payment collection, risk control, clearing, and settlement).
• Integrate blockchain infrastructure and work with Solidity smart contracts.
• Collaborate closely with product, frontend, blockchain, and risk control teams to ensure system stability, security, and high performance.
• Continuously optimize system architecture, performance, maintainability, and drive evolution of tech stack and best practices.

Requirements

• Bachelor’s degree or above in Computer Science or related field.
• 5+ years backend development experience.
• Proficient in Go or Java with good coding practices and engineering discipline.
• Experience designing and implementing high concurrency, high availability architectures for millions of users.
• Familiarity with payment systems and workflows (third-party payment, card payment, crypto payment), including risk control models.
• Understanding of blockchain fundamentals, EVM architecture, and Solidity contract integration.
• Strong communication skills, teamwork spirit, and ability to independently handle complex system modules.

Bonus Points

• Experience developing wallet services.
• Hands-on experience writing and deploying Solidity contracts.
• Familiarity with cutting-edge Web3 fields like account abstraction.
• Experience with DevOps and microservice governance tools (e.g., Kubernetes, Service Mesh, CI/CD).