AI Full-Stack Engineer

ZeinCrew LLC – Remote

About ZeinCrew

ZeinCrew partners with some of the most promising and fastest growing startups in New York and globally. We provide high-quality offshore talent across engineering, product, and operations, helping companies scale efficiently with strong, reliable teams.

About the Role

We are looking for an AI Full-Stack Engineer to join a fast-paced product team building AI-powered tools for workflow automation and client intelligence.

This role involves working across the full stack, from frontend interfaces to backend systems and AI integrations. You will contribute to building scalable applications while leveraging modern AI technologies in production environments.

Key Responsibilities

Full-Stack Development

Build and maintain frontend applications using React.js and modern JavaScript (ES6+)
Develop backend services and APIs using Node.js and Express.js
Design and manage SQL databases (e.g., PostgreSQL)
Implement real-time features, caching, and event-driven systems (e.g., Redis, webhooks)
Ensure performance, scalability, and code quality across the stack

AI & Data Systems

Integrate and work with LLM APIs for natural language processing tasks
Build systems for conversation analysis, summarization, and insights generation
Implement vector search and embedding-based retrieval
Contribute to AI-driven workflows involving text and/or audio data

Integrations & Systems

Develop integrations with CRM, email, and calendar tools
Build features for scheduling, automation, and workflow management
Design and maintain secure, reliable APIs

Security & Infrastructure

Implement authentication systems (OAuth, JWT)
Follow best practices for data security and privacy
Work with cloud environments (Azure or similar)

Requirements

Technical Skills

React.js and modern frontend development
Node.js, Express.js, and REST APIs
SQL databases (PostgreSQL or similar)
Experience integrating LLMs and vector databases
Familiarity with cloud platforms (Azure preferred)
Authentication systems (OAuth 2.0, JWT)

Experience

2+ years of full-stack development experience
Experience working on production applications
Exposure to AI/ML systems is a strong plus
Solid understanding of secure software development

Education

Bachelor’s degree in Computer Science, Engineering, or equivalent experience

Nice to Have

Experience with audio processing or transcription systems
Background in SaaS or enterprise tools
Familiarity with CRM systems or workflow automation platforms

What We Offer

Work on real-world AI applications used in production
Collaborative team with direct impact on product development
Long-term opportunity with growth potential
Remote work
Competitive compensation

Full Stack AI Engineer