Senior Node & React Engineer — Scale & Performance

Mojo AI; Sandy (UT); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Competitive salary

401k and bonuses

Health, dental, vision

Flexible working hours

Job summary

Mojo AI in Sandy, Utah is seeking an experienced Senior Developer to design, build, and scale backend and frontend systems for our AI Safety Mojo platform. You will own critical components, drive performance, and collaborate with product teams to advance our AI-driven safety solutions.

The role emphasizes Node.js, React, SQL/NoSQL, cloud and container tech, broad ownership, and a commitment to secure, reliable software in a fast-paced environment.

Qualifications

• 6-12 years of general development experience with a focus on Node.js and React.
• Experience scaling applications and optimizing high-performance systems.
• Strong database design principles for SQL and NoSQL databases.
• Cloud platforms and containerization experience (AWS/Azure/GCP; Docker, Kubernetes) is a plus.
• Excellent problem-solving and teamwork in a fast-paced environment.
• Strong communication of complex technical concepts to stakeholders.

Responsibilities

• Backend design, development, and maintenance of scalable APIs with Node.js.
• Frontend development with React for high-performance web apps.
• Manage SQL and NoSQL databases (MySQL, PostgreSQL, MongoDB) and optimize data structures.
• Architect scalable systems for high traffic with high availability and low latency.
• Write clean, secure, well-documented, reusable code following best practices.
• Collaborate with product managers and developers to align solutions with goals.
• Troubleshoot and resolve complex issues; implement robust solutions.
• Stay up-to-date with emerging tech and improve processes.

Skills

Problem-solving

Effective communication

Team collaboration

Tools

Node.js

React

SQL

NoSQL

AWS

Azure

Google Cloud

Docker

Kubernetes

CI/CD

Job description

Mojo AI in Sandy, Utah is seeking an experienced Senior Developer to design, build, and scale backend and frontend systems for our AI Safety Mojo platform. You will own critical components, drive performance, and collaborate with product teams to advance our AI-driven safety solutions.

The role emphasizes Node.js, React, SQL/NoSQL, cloud and container tech, broad ownership, and a commitment to secure, reliable software in a fast-paced environment.