Staff Software Engineer (OfficeJS)

TL;DR

Staff Software Engineer (OfficeJS): Developing and leading the technical direction of AI-powered Microsoft Office integrations for legal professionals with an accent on document manipulation and agentic editing. Focus on architecting scalable Office Add-ins, optimizing performance across platforms, and integrating LLM capabilities directly into the Word workflow.

Location: Hybrid in San Francisco, CA (Relocation assistance available)

Salary: $231,000 – $340,000 USD (Offers Equity)

Company

Harvey is transforming legal and professional services by combining frontier agentic AI with an enterprise-grade platform.

What you will do

• Lead the technical direction of the flagship Office Add-in (Harvey in Word) and other Microsoft Office integrations.
• Build AI-native editing experiences, including agentic document rewrites, real-time redlining, and playbook automation.
• Design sophisticated integrations using the OfficeJS API for document manipulation and AI-assisted drafting.
• Architect scalable and maintainable solutions for Windows, Mac, and Web platforms.
• Collaborate with product, design, and backend teams to shape APIs and UX for streaming AI results and tool-calling workflows.
• Mentor engineers, drive technical decisions, and establish high standards for quality and developer experience.

Requirements

• 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 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 modern frontend frameworks.
• Must be based in or be able to relocate to San Francisco, CA.

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.

Culture & Benefits

• High-intensity environment with a strong culture of ownership and decisiveness.
• Competitive compensation package including equity.
• Relocation assistance for new employees.
• Opportunity to contribute to a generational company at a critical growth inflection point.