Why This Job is Featured on The SaaS Jobs
This Staff Software Engineer, Backend role sits at the intersection of modern SaaS platform engineering and the emerging wave of enterprise AI products. The listing signals a company operating with meaningful production scale and global reach, where multi-tenant architecture, permissions, and auditability are not theoretical concerns but day-to-day constraints that shape system design.
For a SaaS-focused engineering career, the work maps closely to the core problems that recur across durable B2B software businesses: building reliable APIs, modeling data for performance, operating services with strong observability, and evolving architecture as product surface area expands. The emphasis on orchestrating LLM and agentic capabilities through well-structured backend services also adds a contemporary layer of platform integration experience that can translate to other AI-enabled SaaS environments without being tied to a single model vendor.
This role is best suited to senior engineers who prefer end-to-end ownership, including production operations and on-call responsibility, and who enjoy partnering with product and frontend counterparts to define contracts and ship customer-facing capabilities. It will fit someone comfortable making pragmatic architectural decisions under real usage, rather than working in isolated R&D or purely internal tooling contexts.
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 Product Backend Engineer on Harvey’s product engineering team, you will design and operate the backend systems that turn cutting-edge AI capabilities into seamless, dependable product experiences. You’ll build secure, multi-tenant services, orchestrate interactions with LLMs and agentic tools, and help define the backend architecture that powers Harvey’s rapidly expanding product surface. Your work will have immediate business and customer impact as you ship the foundational systems behind our next generation of AI products.
What You'll Do
Collaborate closely with Product to prioritize customer-focused work and deliver reliable features quickly in a fast-moving environment.
Design and own backend services and APIs that power Harvey’s web applications, workflows, and integrations.
Model and manage data in Postgres and related data stores to support low-latency, reliable user experiences.
Build secure, multi-tenant, permissions-aware systems with appropriate auditing for enterprise and government customers.
Implement backend features and workflows that use LLMs and agentic tools, orchestrating calls to our AI systems from robust, well-structured services.
Collaborate with frontend, product, and design partners to shape solutions, define clear API contracts, and ship features end-to-end.
Add meaningful logging, metrics, and tracing so services are observable, debuggable, and ready for on-call ownership.
Improve performance and scalability by profiling bottlenecks, tuning queries, and refining service boundaries as usage grows.
Participate in code reviews, technical design discussions, and an on-call rotation for the services you own.
What You Have
10+ years of backend engineering experience building and operating production web applications or SaaS products.
Track record of building fast-growing SaaS products by leveraging PWA technologies
Track record of shipping highly intuitive products, strong attention to detail
Strong programming skills in Python and experience with a modern web framework (e.g., FastAPI or Flask).
Hands-on experience with relational databases (e.g., Postgres)
Solid understanding of API design, authentication/authorization, background job patterns, and robust error handling.
Experience building for Cloud Infrastructure such as Azure, AWS, or GCP.
Comfort operating services in production using logs, metrics, dashboards, and alerts, including participation in an on-call rotation.
Additional Information
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
