Senior Software Engineer, Full Stack

As a Senior Software Engineer on Harvey's Product Engineering team, you'll lead full-stack projects across the company's product lines, partnering with AI, Legal, and GTM teams to build secure systems for a global customer base. This high-ownership role sits at the intersection of application-layer development and generative AI, directly shaping how legal and professional services operate at scale.

What you'll do

• Build retrieval systems over petabyte-scale documents and manage data infrastructure across multiple regions.
• Create organizational-level interfaces that enable collaboration with AI systems.
• Develop and optimize planning agents and LLM-powered workflows for complex professional services tasks.
• Implement government-level security standards for handling sensitive matters.
• Lead full-stack product development across multiple product lines, from frontend to backend infrastructure.
• Evaluate and integrate large language models across diverse task taxonomies.
• Manage dedicated GPU capacity and coordinate internet-scale data collection across 50+ jurisdictions.

What Harvey is looking for

• 5+ years of experience in product-focused full-stack software engineering roles.
• Proficiency with React, TypeScript, CSS (TailwindCSS), Python, or related technologies.
• Track record of building fast-growing SaaS products, ideally with experience leveraging PWA technologies.
• Strong CS fundamentals and demonstrated ability to ship highly intuitive products with meticulous attention to detail.
• Experience building backend platforms that support multiple product lines at scale.
• Comfort working in early-stage startup environments with high ownership and ambiguity.
• Grit and resilience to thrive in a fast-moving, mission-driven organization.