Why This Job is Featured on The SaaS Jobs
This Staff Full Stack Software Engineer role sits at a point in the SaaS landscape where product experience and platform fundamentals converge. Harvey is building an enterprise-grade AI application for regulated, high-stakes professional services, which tends to amplify the importance of permissions, auditability, and admin controls compared with consumer SaaS. The remit spans both end-user workflows and shared platform capabilities, a combination that is increasingly common as AI-native SaaS products mature beyond single-feature releases.
For a long-term SaaS engineering path, the work maps closely to the systems that make multi-tenant products operable at scale: authentication, feature flags, notifications, and collaboration primitives. Experience here translates across many SaaS categories because these are the building blocks that enable multiple product lines to ship consistently while maintaining reliability and security expectations. The cross-functional surface area also mirrors how modern SaaS teams integrate product iteration with platform stewardship.
This is best suited to an engineer who prefers owning foundational components, cares about clean interfaces between teams, and can switch between deep infrastructure decisions and customer-facing delivery. It will appeal to someone comfortable operating with enterprise constraints and who wants their technical choices to shape how other engineers build on the platform.
The section above is editorial commentary from The SaaS Jobs, provided to help SaaS professionals understand the role in a broader industry context.
Job Description
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 1000+ 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.
At Harvey, the future of professional services is being written today — and we’re just getting started.
Role Overview
As a Staff Full Stack Software Engineer at Harvey, you’ll play a pivotal role in shaping 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 and own 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
5+ 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.
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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
