Staff Software Engineer, OfficeJS

Skills

About the Role

You will own and lead the development of Harvey in Word, a Microsoft Office Add-in built on OfficeJS, along with other Microsoft Office integrations. You will build AI-native editing experiences, architect cross-platform solutions, collaborate with product, design and backend teams, and mentor engineers. The role is based in New York with a hybrid in-person model and relocation assistance.

Requirements

• 10+ years of software engineering experience with depth in Office Add-in development using OfficeJS
• Experience shipping a production Office Add-in product, ideally at enterprise scale
• Strong proficiency in JavaScript/TypeScript, HTML and CSS
• Deep understanding of Office Add-in architecture, requirement sets and manifest configuration
• Experience with React or similar frontend frameworks
• Track record of shipping highly intuitive products
• Nice to have: AppSource submission, Outlook Add-ins, Microsoft 365 integrations, legal tech or enterprise SaaS, AI/LLM integration

Responsibilities

• Own and lead technical direction of Harvey in Word and other Microsoft Office integrations
• Build AI-native editing experiences: agentic document rewrites, real-time redlining and playbook automation
• Design integrations with Microsoft Word using the OfficeJS API
• Architect scalable solutions across Windows, Mac and Web
• Build polished, high-performance interfaces with resilient error handling
• Collaborate with product, design and backend teams on APIs and UX for AI features
• Navigate Office Add-in requirement sets, versioning and cross-platform compatibility
• Contribute to Harvey in Outlook and next-generation agentic AI interfaces
• Mentor engineers and drive technical decisions

Benefits

• Equity
• Relocation assistance