Senior Backend Engineer - NodeJS & AWS, Lead & Scale

Sonatafy Technology | Software Delivery Done Right; United States; Remote; USD 140,000 - 210,000; Full time

Job summary

Sonatafy Technology, the nearshore software development and staff augmentation partner, is seeking a Senior Backend Engineer to join the client’s hypergrowth team. You’ll own and mentor backend systems, shaping the technical direction and delivering high-throughput, maintainable services.

You’ll lead a team, define architectural patterns, ensure performance, security, and reliability while collaborating with frontend and cross-functional peers.

Qualifications

• 8+ years of professional backend engineering experience in high-throughput, high-availability environments.
• 5+ years of NodeJS experience and 6+ years with MongoDB (indexes, aggregations, replica sets, sharding).
• Strong AWS experience (EC2, ECS, S3, Lambda, CloudWatch) and containerization with Docker.
• Knowledge of DNS, VPNs, networking, firewalls, and auto-scaling for reliable services.
• Excellent leadership, mentoring abilities, and ability to drive technical decisions.

Responsibilities

• Lead and mentor a team of engineers, fostering a collaborative and high-performing environment.
• Propose and implement scalable architectural patterns to support growth and maintainability.
• Define and enforce coding standards and architectural guidelines.
• Follow and contribute to existing software design patterns.
• Identify and resolve data/process bottlenecks.
• Maintain and update the codebase.
• Collaborate with the Frontend team to ensure performant features.
• Conduct code reviews and provide constructive feedback.
• Troubleshoot and resolve complex technical issues.

Skills

Backend leadership

NodeJS

MongoDB

AWS

Docker

Networking

AI experience

Code reviews

Tools

DNS

VPNs

Job description

Sonatafy Technology, the nearshore software development and staff augmentation partner, is seeking a Senior Backend Engineer to join the client’s hypergrowth team. You’ll own and mentor backend systems, shaping the technical direction and delivering high-throughput, maintainable services.

You’ll lead a team, define architectural patterns, ensure performance, security, and reliability while collaborating with frontend and cross-functional peers.