Harvey · 20 hours ago
Senior/Staff Software Engineer, OfficeJs
New York, United States
Full-time
Hybrid
Senior Level, Lead/Staff
$238K/yr - $312K/yr
5+ years expHarvey is transforming how legal and professional services operate by combining AI technology with an enterprise-grade platform. The Senior/Staff Software Engineer will lead the development of Harvey in Word, an Office Add-in that enhances the document editing experience for legal professionals, and will collaborate with various teams to create seamless integrations within the Microsoft Office environment.
Artificial Intelligence (AI)Information TechnologyLegalLegal Tech
Responsibilities
Own and lead the technical direction of Harvey in Word, our flagship Office Add-in product, alongside our other Microsoft Office integrations
Build the AI-native editing experience: agentic document rewrites, real-time redlining, and playbook automation that transforms how lawyers work
Design and build sophisticated integrations with Microsoft Word using the OfficeJS API, including document manipulation, playbook reviews, and AI-assisted drafting
Architect scalable, maintainable solutions that handle the constraints and quirks of the Office Add-in environment across platforms (Windows, Mac, Web)
Build polished, high-performance interfaces with crisp interactions and resilient error handling
Collaborate with product, design, and backend teams to shape APIs and UX for AI-powered features like streaming results and tool-calling workflows
Navigate Office Add-in requirement sets, versioning, and cross-platform compatibility to ensure broad, reliable support
Contribute to Harvey in Outlook and shape the next generation of agentic AI interfaces across the Microsoft suite
Mentor engineers, drive technical decisions, and raise the bar on quality and developer experience
Qualification
Required
5+ years of software engineering experience, with significant depth in Office Add-in development using OfficeJS
Experience building and shipping a production Office Add-in product, ideally one used at enterprise scale
Strong proficiency in JavaScript/TypeScript, HTML, and CSS
Deep understanding of Office Add-in architecture, requirement sets, manifest configuration, and cross-platform considerations
Experience with React or similar modern frontend frameworks
Track record of shipping highly intuitive products with strong attention to detail
Familiarity with Microsoft Office Add-in guidelines and AppSource submission process is a plus
Preferred
Experience with Outlook Add-ins or other Microsoft 365 integrations (SharePoint, Teams)
Background in legal tech or enterprise SaaS
Experience building products that integrate with AI/LLM capabilities
Company
Harvey
Harvey provides AI-driven tools to assist legal professionals with research, document review, and contract analysis.
501-1000 employees
H1B Sponsorship
Harvey has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (21)
2024 (6)
2023 (2)
Funding
Current Stage
Late StageTotal Funding
$1.02BKey Investors
Andreessen HorowitzEQT GrowthSequoia Capital
2025-10-30Series F· $160M
2025-10-06Series E· $59M
2025-06-23Series E· $300M
Leadership Team
Winston Weinberg
CEO & Co-Founder
Gabe Pereyra
President & Co-Founder
Recent News
2026-01-20
Dynamic Business
2026-01-20
Company data provided by crunchbase