Anywhere, Anyplace Remote (Global) Employment

CopilotKit, Inc. is hiring a Senior Software Engineer, Core Frameworks & Protocols (Open-Source)

Responsibilities

  • Design high-quality TypeScript & Python SDKs that elegantly abstract complexity while preserving control
  • Build reusable components and maintain clean, intuitive APIs
  • Drive projects independently through ambiguity with strong technical judgment
  • Contribute to our open-source ecosystem and engage with our developer community
  • Optimize performance and ensure scalability at production scale

Requirements

  • Track record building developer tools, SDKs, or libraries used by engineering teams
  • Deep TypeScript expertise (3+ years) with React and Node.js experience
  • Experience designing clean APIs and navigating fast-moving, ambiguous environments
  • AI-native workflow: You actively use AI tools (Copilot, Cursor, Claude, etc.) for architecture exploration, refactoring, and rapid prototyping—not just autocomplete; you think at the level of systems and outcomes, directing AI to generate and explore while evaluating outputs critically
  • Clear communication and high degree of independence

Nice to Have

  • React infrastructure work, LLM integration, or AI product surfaces
  • Python experience, open-source contributions, or functional reactive programming
  • Experience with agent runtimes, real-time systems, or maintaining public APIs

Benefits

  • Competitive salary and real equity with early-stage ownership and line-of-sight to value creation
  • 100% health coverage for employees, 50% for dependents, Dental and Vision insurance, competitive paid time off
  • Remote-first, high-agency culture: Flexible work, no micromanagement, and full trust and ownership
Required Skills
agent runtimesreal-time systemsor maintaining public APIs agent runtimesreal-time systemsor maintaining public APIs
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About company
CopilotKit, Inc.
CopilotKit is the #1 open-source platform for connecting AI Agents with user-facing applications. In our first two years, we’ve delivered the fastest growing Javascript AI framework of all time, and built a vibrant community (40k+ GitHub stars, millions of weekly installs, 10s of millions of copilot interactions, double-digit MoM growth), are already monetizing at the enterprise level, and are used by companies ranging from startups to Fortune 100s (including production usage by over 10% of Fortune 500s). We’re emerging as the default for a critical part of the AI stack: the agent/user interaction layer. CopilotKit brings agents out of demos and terminals and into production, through deep integrations with the leading AI infrastructure companies and hyper-scalers (including the leading AI/infra teams at Google, Microsoft, Amazon, Oracle, LangChain, Mastra, Pydantic, Agno, and others). Our small, fast-moving team is building the agentic application platform that will define how user-interactive AI actually manifests in the real world.
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Job Details
Category backend
Posted 3 months ago