Role overview

Full Stack Engineer (AI-Native) — React + Node

Requirements and responsibilities

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Responsibilities

  • Design, develop, and maintain scalable full-stack applications using React.js, Node.js, and TypeScript.
  • Integrate LLMs and AI services into production features — structured outputs, retrieval-augmented generation (RAG), and agentic or tool-using workflows.
  • Build and maintain the supporting data and retrieval layers for AI features (embeddings, vector search, context pipelines).
  • Measure and improve AI feature quality, reliability, latency, and cost through evaluation and guardrails.
  • Collaborate with cross-functional teams to define, design, and ship new features.
  • Implement best practices for platform engineering, performance optimization, and security.
  • Work closely with DevOps to automate and streamline deployment processes.
  • Write clean, testable, and efficient code, and participate in code reviews.
  • Stay current with emerging AI and web technologies and share knowledge with peers.

Requirements

  • 5+ years of experience as a Full Stack Engineer or in similar roles.
  • Strong proficiency with JavaScript/TypeScript, React.js, and Node.js.
  • Hands-on experience integrating LLM / AI APIs (e.g., OpenAI, Anthropic) into production applications.
  • Familiarity with RESTful APIs or GraphQL.
  • Experience with SQL and NoSQL databases (e.g., PostgreSQL, MongoDB).
  • Understanding of authentication and authorization (OAuth, JWT).
  • Comfort working with modern AI-assisted development tools as part of your workflow.
  • Excellent verbal communication and collaboration skills.
  • US citizenship or residency (no visa sponsorship available).

Preferred Qualifications

  • Experience building RAG systems and working with vector databases (pgvector, Pinecone, Weaviate, or similar).
  • Familiarity with agent/orchestration frameworks or the Model Context Protocol (LangChain, LlamaIndex, or custom tooling).
  • Prompt engineering and experience with AI evaluation / observability tooling.
  • Experience with cloud services (AWS, Azure, or GCP).
  • Familiarity with state management libraries (Redux, MobX).
  • Experience with modern JavaScript build tools (Webpack, Babel).
  • Knowledge of testing frameworks (Jest, Mocha).
  • Understanding of asynchronous programming and event-driven architecture.
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Browse stack
FocusAI Native Fullstack EngineerRole area
Seniority signalJunior, MiddleCandidate level
StackAWS, Azure, GCPPrimary skills
Location1 accepted countryEligibility

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