Arca
Security
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Founding Engineer

Build the core product and infrastructure from the ground up. You will shape the technical foundation of Arca's legal intelligence platform.

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About Arca

Arca is building the legal intelligence layer for in-house teams. We centralize legal knowledge, automate routine work like contract review and redlining, and help legal teams move faster. Our platform integrates with the tools teams already use — Word, Google Drive, Slack, Salesforce, and more.

The Role

As a Founding Engineer, you will own significant parts of the product and infrastructure. This is a high-autonomy role where you will work directly with the founders to ship features, design systems, and make foundational technical decisions.

What You'll Do

  • Design and build core platform features end-to-end — from data models to user-facing interfaces
  • Build AI-powered workflows for contract review, legal research, and document generation
  • Architect integrations with third-party services (Google Drive, Slack, Salesforce, etc.)
  • Make foundational decisions on infrastructure, tooling, and system design
  • Ship fast, iterate based on customer feedback, and maintain high code quality

What We're Looking For

  • 3+ years of professional software engineering experience
  • Strong full-stack skills — comfortable across frontend, backend, and infrastructure
  • Experience with TypeScript, React/Next.js, and modern web infrastructure
  • Familiarity with LLMs, embeddings, and AI application patterns
  • Bias toward action — you ship quickly and learn from real usage
  • Excited about building something from zero to one

Send us a note about yourself and what excites you about Arca.

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