NYC Onsite Full-Stack AI Engineer: Build AI Products

H.T. Prof Executive Search; New York (NY); On-site; USD 140,000 - 200,000; Full time

Job summary

H. T. PROF Group in New York is seeking a hands-on Full Stack AI Engineer to build AI-native products from the ground up, collaborating closely with the founders to turn ideas into production-ready applications.

The ideal candidate works across frontend, backend, infrastructure, and AI systems in a fast-moving startup, enjoying rapid iteration and taking full ownership of what you build.

Qualifications

• 4+ years of professional software engineering experience.
• Proven experience launching a product from zero to one at a startup.
• Experience across frontend and backend development; able to own features end-to-end.

Responsibilities

• Build, test, launch, and improve full-stack products from zero to one.
• Develop frontend applications using React/Next.js or similar technologies.
• Build backend services, APIs, databases, and integrations.
• Create AI-powered features using large language models and multimodal models.
• Build AI agents that use tools, complete workflows, and interact with external systems.
• Develop retrieval-augmented generation, embeddings, vector search, and knowledge systems.
• Integrate voice AI, speech-to-text, and real-time conversational systems.
• Implement structured outputs, tool calling, model routing, and human approval workflows.
• Build evaluation, monitoring, and testing systems for AI performance.
• Improve application reliability, security, latency, and AI inference costs.
• Work directly with founders, users, and product stakeholders.
• Help make product, architecture, and technology decisions.

Skills

Full stack development

Frontend and backend

Node.js

Python

FastAPI

Go

PostgreSQL

Cloud infrastructure

AI integration

Team collaboration

Tools

React

Next.js

APIs

Docker

AWS

Vercel AI SDK

Job description

H. T. PROF Group in New York is seeking a hands-on Full Stack AI Engineer to build AI-native products from the ground up, collaborating closely with the founders to turn ideas into production-ready applications.

The ideal candidate works across frontend, backend, infrastructure, and AI systems in a fast-moving startup, enjoying rapid iteration and taking full ownership of what you build.