About the role

Role overview

As a Senior Software Engineer, Frontend at Harvey, you will own and lead frontend engineering projects that define the user experience of products including Assistant, Vault, Workflows, and the Harvey add-ins for Microsoft Word and Outlook. You will also lead frontend engineering efforts for new products being built at Harvey.

What you’ll do

Build new AI collaboration interfaces for lawyers and organizations
Lead end-to-end UI features (scoping, design reviews, implementation, launch, iteration)
Create polished, high-performance interfaces using React + TypeScript and Tailwind CSS, including resilient state management and strong error handling
Architect reusable components and patterns and evolve the internal design system
Optimize frontend performance at scale
Collaborate with design and backend/infrastructure teams to shape APIs and UX for streaming results, long-running jobs, and tool-calling workflows
Improve frontend reliability and security UX for enterprise and regulated environments
Mentor peers via code reviews and documentation; help raise frontend standards and developer experience

What you have

Experience with React, TypeScript, and CSS (including Tailwind CSS)
Proven track record building fast-growing SaaS products
Evidence of shipping highly intuitive products with strong attention to detail
Startup/scaleup experience (early to late stage) is a plus
Experience with PWA technologies is referenced as part of SaaS shipping experience

Location / work model

Based in San Francisco, CA
Hybrid in-person work model with relocation assistance

About NS Demo

Harvey is a company transforming how legal and professional services operate by combining frontier agentic AI with an enterprise-grade platform and deep domain expertise. With 1,500+ customers across 60+ countries, it focuses on building and scaling SaaS products for critical knowledge work.