AI Full-Stack Developer: Build LLM-Powered Web Apps

Reailize, Inc.; Middletown (NJ); On-site; USD 120,000 - 160,000; Full time

Job summary

Reailize, Inc. is seeking an AI Full Stack Developer to design, build, and deploy intelligent web applications driven by large language models and AI SDKs. You will own features end to end—from UI and backend services to LLM-based capabilities—shipping them into production.

The role leverages a MERN stack (MongoDB, Express.js, React, Node.js). Strong full-stack and AI-building abilities are essential, with onsite work in Middletown, NJ.

Qualifications

• Degree in computer science, AI, data science, or related field (or equivalent experience).
• Strong programming skills, including a web-focused language and a language used for AI/ML work.
• Direct experience with the MERN stack (MongoDB, Express.js, React, Node.js).
• Experience building AI agents or multi-step LLM workflows.
• Proven experience building production web applications end to end.
• Experience building features on top of large language models and AI SDKs: prompt engineering, retrieval, and function/tool use.
• Experience building responsive UIs and robust backend services and APIs.
• Familiarity with embeddings, vector retrieval, and retrieval-augmented generation patterns.

Responsibilities

• Design, build, and maintain full-stack web applications with AI-powered features.
• Integrate LLM-based features (chat, copilots, summarization) into products.
• Perform prompt engineering and tool integration on AI SDKs.
• Design evaluation guardrails for AI features (quality, safety, cost, latency).
• Develop scalable, secure backend services and APIs wrapping AI capabilities.
• Deploy apps and AI services to cloud environments.
• Set up CI/CD and monitor production AI features.

Skills

AI/ML

Full stack development

Prompt engineering

Agile development

Problem solving

Education

Bachelor's degree in CS/AI/Data Science

Tools

MongoDB

Express.js

React

Node.js

Job description

Reailize, Inc. is seeking an AI Full Stack Developer to design, build, and deploy intelligent web applications driven by large language models and AI SDKs. You will own features end to end—from UI and backend services to LLM-based capabilities—shipping them into production.

The role leverages a MERN stack (MongoDB, Express.js, React, Node.js). Strong full-stack and AI-building abilities are essential, with onsite work in Middletown, NJ.