Microsoft 365 Integrations Engineer

Remote
Full Time
Experienced

We are looking for a Microsoft 365 Integrations Engineer to join our team. This role will focus on building and evolving integrations across the Microsoft ecosystem primarily Microsoft Teams and Microsoft Word plugins with more complex requirements, while also supporting our longer-term roadmap around Microsoft Outlook plugins. You’ll work heavily with Azure, SharePoint, and OneDrive, especially around integrations, authentication, and file-sharing workflows.

It’s a great opportunity to take end-to-end ownership of production-grade Microsoft 365 integrations while collaborating with cross-functional teams when workflows, security, and data flows are involved.

Requirements

  • Hands-on development experience with SharePoint/OneDrive integrations, plus experience building for Microsoft Teams and/or Office Add-ins.
  • Strong experience developing Microsoft Word plugins, including handling complex or nuanced plugin requirements.
  • Experience (or strong interest) in Microsoft Outlook plugins; this is more exploratory and longer-term, but on our roadmap.
  • Solid experience with Azure + Microsoft 365 services, especially: Integrations and authentication flows and SharePoint / OneDrive file-sharing workflows and permissions
  • Strong knowledge of Microsoft identity & authentication concepts.
  • Experience with API development and building integration-friendly services.
  • Strong debugging skills across distributed systems.
  • Familiarity with Git and modern version control workflows.
  • Advanced English.

Nice to have

  • General integrations experience (webhooks, event-driven workflows, third-party APIs).
  • DevOps familiarity (CI/CD pipelines, release processes, environment management).
  • Experience integrating with other messaging/collaboration platforms (e.g., Slack, Google Workspace, Zoom, etc.).
  • Familiarity with Microsoft Graph API (very plus if you’ve used it for files, permissions, or collaboration workflows).
Main Activities
  • Build and maintain Microsoft Teams add-ins and bot functionality, improving reliability and user experience.
  • Develop Microsoft Word plugins with more complex requirements (edge cases, nuanced behaviors, secure workflows).
  • Contribute to the longer-term roadmap for Microsoft Outlook plugins, helping define approach, feasibility, and architecture.
  • Implement integrations around SharePoint/OneDrive, focusing on secure authentication and file-sharing workflows.
  • Design and develop APIs/services to support integration needs (permissions, file access, events, automations).
  • Collaborate with engineering and product stakeholders to define integration requirements and deliver predictable outcomes.
  • Ensure secure handling of credentials, tokens, and access control across Microsoft ecosystems.Improve development and deployment workflows (CI/CD, observability, debugging practices).
Education

Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience).

About Us

Definity was founded in 2004 with the vision of delivering technology that makes a difference. Today, with six offices across the US and Mexico, we’re proud to partner with world-class organizations like Tesla, Harvard, Berkeley, and Flowserve.
We believe diverse perspectives make stronger teams. That’s why inclusion is part of our DNA. We welcome all individuals regardless of gender, orientation, religion, or origin and provide an environment where talent and passion are what matter most.

Join Definity and help shape technology that grows with businesses, people, and communities.

 
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