Senior Software Engineer, Frontend

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 As a Frontend Software Engineer at Harvey, you will own and lead engineering projects that define the user experience of users of 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. We also build enterprise-grade collaboration product experiences for law firms. This role is based in Toronto, Canada. We use a hybrid, 3+ days-per week 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 Shared Spaces 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 What You Have 6+ years (post-BS/MS) of frontend-focused software engineering experience Experience working across the stack to ship user-facing features with measurable impact Experience with React, Typescript, and CSS (we use Tailwind CSS) Track record of shipping highly intuitive products, strong attention to detail Strong programming skills and general Computer Science knowledge What We Offer Be part of building something special as a founding member of our Toronto team Structured hybrid working arrangement: 3 days in our Toronto office, 2 days working from home Compensation CAD $164,000 - $225,000 We are an AI company and we use AI to improve all of our processes, including in the recruitment process. Whilst we do use AI to help improve efficiency in our recruitment process, we do not rely on AI to make any automated decisions and ensure that a human reviews AI output. Depending on your location, an Applicant Privacy Notice may apply to you. You can find all of our Applicant Privacy Notices [ here ]. #LI-KT1 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 accommodations@harvey.ai