Senior Software Engineer, Full Stack

Why HarveyAt 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 1000+ customers in 60+ 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.

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

Role OverviewAs a Full Stack Software Engineer at Harvey, you’ll play a pivotal role in constructing the foundation of our product platform while directly building user-facing features for some of the world’s leading law firms and enterprise customers. This team owns and operates the platform layer that enables secure, reliable, and flexible experiences for our customers including notifications, permissions and feature flag infrastructure. We also build enterprise-grade collaboration product experiences for law firms.

You will design systems that not only serve as critical infrastructure for the rest of the company, but also directly impact how our users engage with Harvey’s AI-powered legal tools. This role is ideal for engineers who are excited by the opportunity to move between deep platform thinking and hands-on product iteration.

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 - Design and build foundational infrastructure including authentication, permissions, feature flagging, notifications, and document management integrations

- Build and evolve Harvey’s internal product platform, accelerating development across multiple product lines and engineering teams

- Lead development of enterprise-facing features, such as secure multi-party collaboration, cross-organization workflows, and robust admin controls

- Maintain high standards for security, privacy, and system reliability, particularly in handling sensitive legal data

- Collaborate cross-functionally with product, AI, design, and GTM teams to deliver delightful, enterprise-ready experiences

What You Have- 4+ YoE (post-BS/MS) in a product focused full-stack software engineering role.

- Experience with React, Typescript, CSS (we use TailwindCSS), Python, or related.

- Track record of building fast-growing SaaS products by leveraging PWA technologies.

- Track record of shipping highly intuitive products, strong attention to detail.

- Experience building backend platforms that can support multiple product lines.

- 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

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].

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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