Senior Full Stack Engineer (Remote, Freelance)

About the role

Bitrock is building a brand‑new elite team focused on cutting‑edge AI projects. We are looking for a senior full‑stack engineer who thrives on autonomy, speed, and delivering concrete code impact in the realm of large language models and agentic workflows.

Key responsibilities

• Collaborate with a small, highly autonomous team to design and implement intelligent, AI‑driven features.
• Develop robust backend services using Node.js and TypeScript.
• Create fluid, responsive front‑end experiences with React and TypeScript.
• Orchestrate complex LLM workflows using frameworks such as LangChain or Haystack.
• Apply agentic design patterns, including state management, memory handling, and tool integration.

Required profile

• Senior‑level full‑stack developer with a strong passion for large language models.
• Self‑motivated and comfortable working independently in a fast‑moving environment.
• Demonstrated interest in AI, through personal projects or continuous learning.

Required skills

• Node.js
• TypeScript
• React
• LangChain or Haystack for LLM orchestration
• Agentic design patterns
• Prompt engineering
• Optional: native mobile development (iOS/Android), Java, Scala