Lead Software Engineer – React, Node.js (MERN Stack)

Job Title: Lead Software Engineer – React, Node.js (MERN Stack)

Location: Newark, CA (Local candidates only)

Role Summary
We are seeking a highly experienced Senior Lead Software Engineer with deep expertise in the MERN stack to design, build, and scale modern web applications and component libraries. This role requires hands-on technical leadership, ownership of large-scale software initiatives, and the ability to guide development teams through complex, high-impact projects.

You will be responsible for architecting solutions, improving existing systems, mentoring engineers, and ensuring high-quality, scalable, and maintainable software across the full development lifecycle.

Key Responsibilities
Lead the design, development, and delivery of large-scale web applications using React, TypeScript, Node.js, and MongoDB
Architect and build reusable React component libraries and frontend frameworks
Fine-tune and enhance complex software implementations to improve performance, scalability, and reliability
Gather, analyze, and document system requirements, technical specifications, and enhancement requests
Translate business and client requirements into robust technical solutions
Customize and implement system software based on client and enterprise needs
Prepare detailed technical documentation, software specifications, and test plans
Write clean, efficient, and maintainable code; develop test data and conduct unit testing
Modify and modernize existing applications to align with new standards and best practices
Perform quality assurance reviews and ensure adherence to coding, security, and performance standards
Conduct post-implementation validation, identify defects, and lead issue resolution efforts
Provide technical leadership, mentorship, and code reviews for development teams
Collaborate cross-functionally with product, architecture, QA, and operations teams

Required Experience & Skills
Hard Skills (Top 3)
12+ years of experience as a Lead Software Engineer, with extensive hands-on expertise in the MERN stack
10+ years of experience building production-grade applications using React, TypeScript, Node.js, and MongoDB
10+ years of experience leading development teams and delivering large-scale, enterprise-level projects
Technical Qualifications
Strong foundation in computer science fundamentals including data structures, algorithms, and software design
Proven experience designing and developing large-scale distributed systems
Expertise in frontend architecture, component-driven design, and modern JavaScript frameworks
Strong experience with unit testing, debugging, and troubleshooting across new and legacy systems
Ability to analyze complex technical issues and drive effective resolutions
Experience with software lifecycle management, CI/CD practices, and modern development workflows

Education
Bachelor’s degree in Engineering, Computer Science, or a related field (required)

Nice to Have
Experience with Java-based backend systems or hybrid Java/Node.js environments
Exposure to cloud platforms and scalable system architectures
Prior experience building enterprise design systems or shared UI platforms