Full Stack Agentic Engineer

About the job

About the Opportunity Frenxt is hiring on behalf of an innovative AI developer tooling company building the next generation of AI-powered development environments. This is a rare opportunity to work at the intersection of AI, developer experience, and agentic systems. Role Overview We're looking for a Full Stack Agentic Engineer who can design, build, and ship production-grade AI-powered developertools. You'll work across the stack—from browser-based IDEs to agentic backendsystems—creating intelligent workflows that augment how developers write and shipcode. Required Competencies Core Engineering (Must Have) • 5+ years of professional softwareengineering experience • Strong proficiency in TypeScript andmodern JavaScript • Experience building productionapplications with Next.js or similar Reactframeworks • Solid understanding of system design anddistributed architectures • Experience with monorepo tooling(Turborepo, Nx, or similar) AI & Agentic Systems (Must Have) • Hands-on experience with LLM APIs(Anthropic Claude, OpenAI, Google Gemini) • Familiarity with agentic frameworks(LangChain, LangGraph, AutoGen, or similar) • Understanding of prompt engineering andtoken optimization strategies • Experience building tool-calling agentsand multi-step reasoning systems Frontend (Strong) • Modern React (hooks, server components,concurrent features) • State management (Zustand, Redux, orsimilar) Backend (Strong) • Node.js runtime and async patterns • RESTful APIs and real-time systems(WebSockets) • PostgreSQL, Redis, or similar databases • Container / sandbox orchestration concepts Nice to Have • Experience with browser-based developmentenvironments (StackBlitz, CodeSandbox,Replit internals) • Knowledge of NestJS or similar backendframeworks • Familiarity with Supabase, Stripe, orSentry • Contributions to open-source AI / developertooling projects • Understanding of token economics and LLMcost optimization Tech Stack You'll Work With Layer : Frontend Technologies : Next.js 15, React 19,TypeScript, Tailwind CSS,Zustand Layer : AI / Agents Technologies : LangChain, LangGraph, ClaudeAPI, Gemini APILayer : BackendTechnologies : Node.js, NestJS Layer : DatabaseTechnologies : PostgreSQL, Redis, Supabase Layer : InfrastructureTechnologies : Monorepo (pnpm / Turborepo),Docker What You'll Do • Design and implement agentic workflowsthat assist developers in real-time • Build and optimize AI-powered codegeneration pipelines • Develop browser-based IDE features(editor, terminal, preview) • Architect systems for low-latency,high-reliability AI interactions • Collaborate with product and design toshape the developer experience What We Offer • Competitive compensation • Opportunity to shape a product at theforefront of AI + DevTools • Work with cutting-edge AI models andagentic architectures

Requirements

• TypeScript
• JavaScript
• Next.js
• React
• LLM APIs
• Node.js

Preferred Technologies

• TypeScript
• JavaScript
• Next.js
• React
• LLM APIs
• Node.js

Benefits

• Competitive compensation
• Opportunity for career growth