Why This Job is Featured on The SaaS Jobs
This Staff Software Engineer, Full Stack role sits at the intersection of SaaS product engineering and enterprise-grade AI, where application-layer design is tightly coupled to platform constraints like security, data scale, and multi-region infrastructure. The listing signals a company operating beyond MVP, with a broad customer footprint and complex workloads that resemble modern B2B SaaS at scale rather than a single-feature product.
For a SaaS career, the standout value is exposure to systems that must be both user-facing and operationally rigorous. Work spanning retrieval over very large document corpora, evaluation frameworks for LLM performance, and capacity management across regions builds intuition for reliability, cost control, and product quality in AI-enabled SaaS. Cross-functional collaboration with AI, domain experts, and go-to-market partners also mirrors how SaaS teams translate ambiguous customer needs into shippable software.
This role is best suited to senior engineers who prefer owning substantial product surfaces end to end and who enjoy making tradeoffs across UX, backend architecture, and operational concerns. It will fit professionals motivated by measurable outcomes, careful engineering under constraints, and the discipline required to ship in regulated or high-trust enterprise environments.
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 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 Overview
As a Software Engineer on the Product Engineering team at Harvey, you will own and lead engineering projects across our various product lines. You will work closely with our AI, Legal, and GTM teams to build secure systems that deliver value to our customers. We are looking for individuals who have worked across the stack on incredible products across consumer, enterprise, and various industries and who are excited about building the future of application layer and genAI products.
This role is based in San Francisco, CA. We use an in-person work model and offer relocation assistance to new employees.
What You’ll Do
Retrieval over peta-byte scale documents
Organizational-level interfaces to collaborate with AI
Managing dedicated GPU capacity across 5+ regions
1000-step planning agents that help take companies public
Government-level security for the world's most sensitive matters
Evaluating LLMs across a 10k+ leaf taxonomy of tasks
Internet-scale data collection from over 50+ jurisdictions
What You Have
6+ 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.
Grit - experience working at early-stage startups is a plus.
Compensation Range
$238,000 -$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].
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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
