AI-Driven Full Stack Engineer — Zero-to-One, Onsite in SF

Software Placement Group; San Francisco (CA); On-site; USD 140,000 - 230,000; Full time

Job summary

Software Placement Group is seeking a Full Stack AI Engineer in San Francisco to turn ideas into production-ready AI-native products. You will work with founders to shape the tech foundation, build frontend and backend, and integrate LLMs and AI agents.

You will own end-to-end development from zero to one, focusing on speed, quality, and scalable architectures in a fast-growing startup environment.

Qualifications

• 4+ years of professional software engineering experience.
• Proven experience launching a product from zero to one.
• Strong frontend and backend development skills.
• Experience at an early-stage startup.
• Proficiency in TypeScript, JavaScript, React, Next.js.
• Candidates must currently live in the Bay Area and be onsite in San Francisco.

Responsibilities

• 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 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 model routing, structured outputs, tool calling, and human approval workflows.
• Build evaluation, monitoring, and testing systems for AI performance.
• Improve application speed, reliability, scalability, security, and AI inference costs.
• Work directly with founders, users, and product stakeholders.
• Help make product, architecture, and technology decisions.

Skills

Full-stack development

TypeScript/JavaScript

React/Next.js

Node.js/Python/FastAPI/Go

PostgreSQL/APIs

Cloud deployment

AI model integration

AI agents/RAG/tooling

Embeddings/Vector search

Multimodal AI

Product judgment

Startup pace

Tools

LangGraph

LlamaIndex

Vercel AI SDK

Pinecone

Qdrant

Weaviate

pgvector

Job description

Software Placement Group is seeking a Full Stack AI Engineer in San Francisco to turn ideas into production-ready AI-native products. You will work with founders to shape the tech foundation, build frontend and backend, and integrate LLMs and AI agents.

You will own end-to-end development from zero to one, focusing on speed, quality, and scalable architectures in a fast-growing startup environment.