Frontend Platform Engineer

Harvey; California (MO); On-site; USD 193,000 - 290,000; Full time

Job summary

Harvey is seeking experienced frontend engineers to build and evolve the frontend platform that powers all user-facing applications. You will contribute to a scalable architecture, create shared infrastructure, and improve the developer experience to accelerate delivery.

This high-impact role focuses on design systems, developer tooling, performance, and reliability across the frontend stack, collaborating with product, design, and infrastructure teams to drive the future of Harvey’s frontend

Qualifications

• Strong experience building large-scale frontend systems or platform-level infrastructure.
• Ability to think in systems and abstractions, not just features.
• Proven track record of improving developer experience and engineering velocity.
• Experience influencing technical decisions across teams or driving adoption of shared systems.

Responsibilities

• Build and evolve shared frontend infrastructure and the design system.
• Evolve frontend architecture for scalability and performance.
• Improve developer experience and engineering velocity.
• Improve application performance and reliability.
• Partner with product teams to drive adoption of platform systems.
• Identify and reduce friction across the development lifecycle.

Skills

Large-scale frontend

Systems thinking

Developer experience

Cross-team influence

Job description

Why Harvey

At Harvey, we’re transforming how legal and professional services operate. 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. We have 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 moves fast, takes ownership, and is deeply committed to the mission — operating with intensity, staying close to our customers, and pushing each other for excellence. We live by three values: Decisiveness, Simplicity, and Job's Not Finished. We act quickly on clear judgment over perfect information, we believe simplicity is what scales, and we're never satisfied with where we are. If you want to do the best work of your career alongside people who share that drive, we'd love to build with you.

At Harvey, the future of professional services is being written today — and we’re just getting started.

Role Overview

We’re looking for experienced frontend engineers to help build and evolve Harvey’s frontend platform—the systems, tools, and abstractions that enable our engineering team to ship high-quality product experiences quickly and consistently.

This team focuses on developer experience, performance, reliability, and scalability across our frontend stack. Rather than building one-off product features, you’ll create shared foundations that power all of Harvey’s user‑facing applications.

This is a high-impact role with broad scope across the engineering organization. You’ll work closely with product engineers, design, and infrastructure teams to define and drive the future of frontend development at Harvey.

What You’ll Do

• Build and evolve shared frontend infrastructure, including our design system and developer tooling

• Contribute to and evolve frontend architecture for scalability and performance

• Improve developer experience and engineering velocity

• Improve application performance and reliability

• Partner with product teams to drive adoption of platform systems

• Identify and reduce friction across the development lifecycle

What You Have

• Strong experience working on large-scale frontend systems or platform-level infrastructure

• Ability to think in systems and abstractions, not just features

• A track record of improving developer experience or engineering velocity

• Experience influencing technical decisions across teams or driving adoption of shared systems

Compensation

$193,400 - $290,000 USD

Depending on your location, an Applicant Privacy Notice may apply to you. You can find all of our Applicant Privacy Notices [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 [e-mail]