Demo

Senior Lead Full Stack Developer (MERN Stack + AI)

Amtex Systems Inc
Princeton, NJ Contractor
POSTED ON 7/30/2026
AVAILABLE BEFORE 8/28/2026

Job Title: Senior Lead Full Stack Developer (MERN Stack AI)

Location: Princeton, NJ (Hybrid)

Job Type: Long term assignment


Job Description:

We are seeking a Senior Lead Full Stack Developer to lead the development of a new AI-driven application. The ideal candidate will have deep expertise in the MERN Stack (MongoDB, Express.js, React.js, Node.js) and a proven track record of designing, building, and delivering scalable full-stack web applications. Experience with AI/LLM integration, Generative AI, or AI-powered application development is highly desirable.


Key Responsibilities:

  • Lead the architecture, design, and development of a modern MERN stack application.
  • Build scalable front-end and back-end solutions using React, Node.js, Express, and MongoDB.
  • Integrate AI/LLM capabilities into web applications where applicable.
  • Collaborate with product managers, designers, and engineering teams to define technical solutions.
  • Mentor developers, conduct code reviews, and enforce development best practices.
  • Optimize application performance, security, and scalability.


Required Skills:

  • 8 years of full-stack development experience.
  • Strong hands-on expertise with MongoDB, Express.js, React.js, and Node.js (MERN Stack).
  • Strong knowledge of REST APIs, JavaScript/TypeScript, and modern web development practices.
  • Experience with cloud platforms (AWS, Azure, or GCP) and CI/CD pipelines.
  • Experience with AI, Generative AI, LLMs, OpenAI, LangChain, RAG, or AI application development.
  • Excellent problem-solving and communication skills.


Hourly Wage Estimation for Senior Lead Full Stack Developer (MERN Stack + AI) in Princeton, NJ
$61.00 to $77.00
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