Senior/Staff Software Engineer, OfficeJS job opportunity at Harvey.

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Harvey Senior/Staff Software Engineer, OfficeJS
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Pattern: full-time
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Engineering

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degreeBachelor's (B.Sc.)
loacation New York, United States Of America
loacation New York....United States Of America

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 Legal professionals spend most of their day in Microsoft Word: drafting, reviewing, and refining complex documents that shape meaningful outcomes. Harvey in Word brings AI-powered capabilities directly into Word, enabling lawyers to draft faster, run playbook reviews, and perform agentic editing, all without leaving their workflow. It's one of our most strategic product lines and a key part of how we meet lawyers where they already work. As a Senior/Staff Software Engineer on the Embedded Experiences team, you will own and lead the development of Harvey in Word, our Microsoft Office Add-in built on OfficeJS, alongside our other Microsoft Office integrations. You'll architect and ship features that integrate seamlessly with Word, handling the unique challenges of building performant, polished experiences within the Office Add-in environment. We're looking for someone with deep expertise in OfficeJS and Office Add-in development, ideally from building a similar product at scale. You'll join a team of highly motivated, skilled engineers who hold everything they touch to the highest standards, from architecture to code to user experience. You may also contribute to our Outlook integration and help build the next generation of agentic AI interfaces across the Microsoft suite. This role is based in New York, NY. We use a hybrid in-person work model and offer relocation assistance to new employees. What You'll Do 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 What You Have 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 Nice to Have 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 Compensation Range $200,000 - $312,000 USD #LI-BB1 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

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