Senior Backend Engineer

Job Summary

A company is looking for a Senior Backend Software Engineer.

Key Responsibilities

• Design and implement scalable backend systems and APIs for authentication and wallet infrastructure
• Build secure systems following best practices in encryption, key management, and access control
• Collaborate with product and engineering teams to develop solutions that serve millions of users

Required Qualifications

• 5 to 7 years of backend engineering experience focused on systems design, authentication, and security
• Proficiency in Node.js, Express.js, and TypeScript
• Experience designing and scaling production APIs for identity, authentication, or payments-related systems
• Knowledge of authentication protocols (OAuth, JWT) and cryptographic principles
• Strong commitment to quality, performance, and maintainability of production code