Integration Engineer – Microsoft Graph & Enterprise AI Systems

FGS Global•New York, NY

6d•$100,000 - $140,000

About The Position

You'll build enterprise integrations that connect our AI platform to Microsoft 365 and other corporate systems. This is hands-on infrastructure work: implementing authentication flows, managing permissions, and creating data pipelines that enable AI agents to operate securely within enterprise environments. You'll work closely with senior engineers to expand our platform's integration capabilities—turning technical specifications into production code that consultants rely on daily.

Requirements

3+ years backend engineering with API integration experience
Strong proficiency in Node.js and TypeScript
Deep understanding of Microsoft 365 architecture (Azure AD, SharePoint, Teams, Exchange Online)
Solid grasp of Microsoft's permission model (delegated vs. application permissions, consent frameworks, API scopes)
Experience with OAuth 2.0 flows and enterprise authentication patterns
Hands-on experience with Microsoft Graph API
Cloud platform experience with Azure and GCP
Ability to build resilient systems with proper error handling

Nice To Haves

MSAL Node library implementation experience
Understanding of SharePoint site architecture, document libraries, and Teams structure
Experience with Microsoft Fabric or other Microsoft data architectures
Model Context Protocol (MCP) implementation experience
Experience with caching systems (Redis or similar)
Background working with IT/security teams on enterprise integrations
Familiarity with AI/LLM platforms or agent systems
Azure AD app registration and administration experience
Knowledge of other enterprise APIs (Google Workspace, Salesforce, Slack)
Understanding of Graph SDK internals
Experience with Adaptive Cards or Teams extensibility
Familiarity with Microsoft's tenant architecture and multi-tenant applications

Responsibilities

Integration Development:
Implement OAuth-based authentication flows with proper scope management
Build data pipelines for email, calendar, file storage, and collaboration platforms
Handle complex API scenarios like recurring events, large file uploads, and rate limiting
Create resource mapping between internal systems and external platforms
Microsoft Graph & Enterprise APIs:
Develop integrations using Microsoft Graph API across multiple services
Implement search and query capabilities using platform-specific APIs
Optimize performance for high-volume operations
Build resilient error handling and retry logic
Security & Compliance:
Work with IT teams on app registration and permission workflows
Implement secure token management with refresh and caching strategies
Follow enterprise security patterns and data access policies
Document integration approaches and technical decisions
Production Support:
Monitor integration health and respond to issues
Handle API throttling and service disruptions gracefully
Debug authentication failures and permission problems
Contribute to team knowledge base and documentation