Senior Software Engineer - MERN Stack

Role Overview

At Cubic Transportation Systems, the P3 Senior Software Engineer (MERN Stack) is a strong full-stack individual contributor responsible for building and maintaining reliable, scalable applications that support mission-critical transportation platforms used globally.

This role focuses on feature ownership, execution excellence, and high-quality delivery within established architectural patterns.

Key Responsibilities

• Develop and maintain full-stack applications using MongoDB, Express. js, React, and Node. js
• Build responsive and accessible React-based user interfaces
• Design and implement RESTful APIs and backend services
• Own assigned features end-to-end, from development to production support
• Write clean, testable, and maintainable code
• Participate actively in code reviews and design discussions
• Debug and resolve issues across frontend, backend, and database layers
• Collaborate with QA, DevOps, and System Engineering teams for releases

Required Skills & Experience

• 6-8 years of professional software engineering experience
• Strong hands-on experience with React (hooks, component architecture, state management)
• Solid backend experience using Node. js and Express. js
• Experience with MongoDB (schema design, queries, basic performance tuning)
• Experience building and consuming RESTful APIs
• Familiarity with authentication, authorization, and RBAC
• Experience working in Agile development environments
• Proficiency with Git and modern development workflows

Success in This Role

• Delivers complex features independently and reliably
• Maintains high code quality and follows engineering standards
• Demonstrates clear ownership of assigned modules or services
• Escalates risks and dependencies proactively