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Full Stack AI Engineer | Onsite in New York | Local Candidates Only, 5

Jobleads-US
3 hours ago
Full-time
On-site
Location:

New York, NY |

Schedule:

Full-time, onsite five days per week

Overview An early-stage, cutting-edge AI startup in New York City is seeking a Full Stack AI Engineer with strong zero-to-one product-building experience. This is a fully onsite role based in a Manhattan office, and the company is looking for a highly hands-on engineer who can help build and launch AI-native products from the ground up, working closely with the founders to turn ideas into production-ready applications and help shape the company's technical foundation. Candidates must currently live within commuting distance of New York City; remote and hybrid work are not available.

What you'll do

Build, test, launch, and improve full-stack products from zero to one

Develop modern frontend applications using React, Next.js, or similar technologies

Build backend services, APIs, databases, and third-party integrations

Create AI-powered features using large language models and multimodal models

Build AI agents that can 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, text-to-speech, or 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, scalability, security, latency, and AI inference costs

Work directly with founders, users, and product stakeholders

Help make product, architecture, and technology decisions

Required qualifications

4 or more years of professional software engineering experience

Proven experience building and launching a product from zero to one

Prior experience working at an early-stage startup

Strong experience across frontend and backend development

Strong skills in TypeScript, JavaScript, React, and Next.js

Backend experience with Node.js, Python, FastAPI, Go, or similar technologies

Experience with PostgreSQL, APIs, cloud infrastructure, and production deployments

Hands‑on experience integrating large language models into production applications

Experience with AI agents, RAG, tool calling, embeddings, multimodal AI, or voice AI

Strong product judgment and the ability to operate with limited direction

Ability to move quickly while maintaining high engineering standards

Must be actively hands‑on and writing production code

Must currently live within commuting distance of New York City and be able to work onsite five days per week; remote, hybrid, relocation‑dependent, and out‑of‑area candidates will not be considered

Preferred qualifications

Experience with OpenAI, Anthropic, Gemini, or open-source AI models

Familiarity with Model Context Protocol and agent orchestration frameworks

Experience with LangGraph, LlamaIndex, Vercel AI SDK, or similar tools

Experience with vector databases such as Pinecone, Qdrant, Weaviate, or pgvector

Experience with Voice AI, WebSockets, WebRTC, or real‑time streaming systems

Experience with AI evaluations, observability, prompt injection protection, and model security

Experience with Docker, AWS, Google Cloud, Azure, or serverless infrastructure

Experience as an early, founding, or first engineering hire

Why this role This is an opportunity to work directly with founders on a fast-moving, early-stage AI startup, taking full ownership of building AI-native products from zero to one.

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