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.