[Remote] Backend Engineer - Node.js Expert

Note: The job is a remote job and is open to candidates in USA. Mercor connects elite creative and technical talent with leading AI research labs. The company is seeking a Senior Software Engineer, Backend to lead feature delivery and build, maintain, and optimize backend services, integrations, and API layers using Node.js, TypeScript, and Rust. The role also involves integrating AI/ML capabilities, conducting code reviews, monitoring performance, and driving continuous improvement.

Responsibilities

• Lead delivery of scoped features through collaborative engineering teams, ensuring alignment with platform and system objectives
• Design, develop, test, and maintain high-quality services in Node.js, TypeScript, and Rust across the full software lifecycle and CI/CD
• Build and optimize server-to-server integrations and API layers (REST and GraphQL) for high-traffic applications
• Integrate AI/ML capabilities into product services and use generative AI tools to enhance engineering productivity
• Contribute to solution design, conduct code reviews, and apply best practices for scalable, secure, and maintainable systems
• Monitor application performance, support defect resolution, and drive continuous improvement

Skills

• 4+ years of professional software engineering experience or a Bachelor's degree in Computer Science and 3+ years of experience
• Hands-on production coding experience in Node.js and TypeScript on the backend
• Hands-on coding experience in Rust for production services or performance-critical modules
• Strong web fundamentals: HTTP semantics, cookies, headers, caching, sessions, and server-to-server communication patterns
• Experience building or operating high-traffic, consumer-facing web platforms
• Ability to engage reliably for at least 40 hours/week during weekdays
• Excellent written and verbal communication skills
• Experience with GraphQL on Node.js (schema design, resolvers, federation)
• Familiarity with web accessibility standards

Benefits

• Remote work

Company Overview

Mercor is an AI-based hiring platform that improves the recruitment process by matching talent with opportunities tailored to their skills. It was founded in 2023, and is headquartered in San Francisco, California, USA, with a workforce of 201-500 employees. Its website is https://mercor.com.

Company H1B Sponsorship

Mercor has a track record of offering H1B sponsorships, with 19 in 2026, 7 in 2025. Please note that this does not guarantee sponsorship for this specific role.