Senior Software Engineer, Frontend

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Why Harvey

At Harvey, we’re transforming how legal and professional services operate — not incrementally, but end-to-end. By combining frontier agentic AI, an enterprise-grade platform, and deep domain expertise, we’re reshaping how critical knowledge work gets done for decades to come. This is a rare chance to help build a generational company at a true inflection point. With 700+ customers in 58+ countries, strong product‑market fit, and world‑class investor support, we’re scaling fast and defining a new category in real time. The work is ambitious, the bar is high, and the opportunity for growth — personal, professional, and financial — is unmatched. Our team is sharp, motivated, and deeply committed to the mission. We move fast, operate with intensity, and take real ownership of the problems we tackle — from early thinking to long‑term outcomes. We stay close to our customers — from leadership to engineers — and work together to solve real problems with urgency and care. If you thrive in ambiguity, push for excellence, and want to help shape the future of work alongside others who raise the bar, we invite you to build with us.

Role Overview

As a Senior Software Engineer, Frontend at Harvey, you will own and lead engineering projects that define the user experience of our different products: Assistant, Vault, Workflows, and Harvey in Microsoft Word and Outlook. You will also lead frontend engineering on new products that we are building at Harvey. The team is composed of highly motivated, skilled, and considerate engineers. Everything we touch is polished to high standards extending to all aspects of our work – from design to architecture to code to slack communication. If any of this resonates with you, this role might be right for you. This role is based in San Francisco, CA. We use a hybrid in‑person work model and offer relocation assistance to new employees.

What You'll Do

• Build new interfaces for lawyers and organizations to collaborate with AI.
• Lead end‑to‑end UI features for Assistant, Vault, Workflows, our Word/Outlook add‑ins, and future Harvey products — from scoping and design reviews to implementation, launch, and iteration.
• Build polished, high‑performance React + TypeScript interfaces using TailwindCSS, with crisp interactions, resilient state management, and strong error handling.
• Architect reusable components and patterns and evolve our internal design system.
• Optimize frontend performance at scale.
• Collaborate tightly with design and backend/infrastructure to shape APIs and UX for long‑running jobs, streaming results, and tool‑calling workflows.
• Raise the bar on frontend reliability and security UX for enterprise and regulated environments.
• Mentor peers through thoughtful code reviews and documentation; help refine our frontend standards and developer experience.

What You Have

• Experience with React, Typescript, and CSS (we use Tailwind CSS)
• Track record of building fast‑growing SaaS products by leveraging PWA technologies
• Track record of shipping highly intuitive products, strong attention to detail
• Experience working at startups and scaleups (anywhere from early‑to‑late‑stage) is a plus

Compensation Range

$200,000 - $260,000 USD

Please find our CA applicant privacy notice here .

Harvey is an equal opportunity employer and does not discriminate on the basis of race, gender, sexual orientation, gender identity/expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related condition, or any other basis protected by law. We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made by emailing View email address on click.appcast.io

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Software Development