Full Stack Engineer

.NET Full-Stack Engineer -  Microsoft Teams Bots & Communications
 

We’re looking for an experienced .NET Full-Stack Engineer to join a long-term product team working within the Microsoft Teams ecosystem.
 

The role is primarily backend-focused and combines Microsoft Teams bots, Microsoft Graph integrations, real-time activity processing, notifications, and communication-related functionality.
 

You’ll work on production features inside Microsoft Teams, including bot interactions, activity feeds, communication events, and integration with Microsoft 365 services.
 

What you’ll work on

• Design, develop, and maintain Microsoft Teams bots that process user and system activity in real time.
• Build and improve a real-time activity feed bot that sends timely notifications to users’ Teams activity feed through Microsoft Graph.
• Develop integrations with Microsoft Graph API, Microsoft Teams APIs, and Microsoft 365 services.
• Work with Teams-related functionality such as calls, meetings, participants, recordings, call records, notifications, and communication data.
• Build backend services for collecting, processing, and exposing Teams activity and communication data.
• Implement real-time functionality using SignalR / WebSockets where applicable.
• Set up and manage bot authentication and permissions with Microsoft Entra ID (Azure AD).
• Contribute to frontend functionality using React / Angular / TypeScript when needed.
• Troubleshoot application-level integration issues and improve reliability and performance.
   

Core stack

• C# / .NET / ASP.NET Core
• Microsoft Graph API
• Microsoft Teams APIs
• Microsoft Graph Communications / Cloud Communications APIs
• Microsoft Bot Framework / Teams bots
• Microsoft Entra ID
• SignalR / WebSockets
• SQL
• REST APIs
• React / Angular / TypeScript
   

Requirements

• 5+ years of commercial experience with C# / .NET
• Strong backend experience with ASP.NET Core
• Commercial experience with Microsoft Graph API
• Hands-on experience with Microsoft Teams integrations
• Experience developing or supporting Teams bots
• Understanding of Teams activity feed notifications, Graph permissions, authentication, and event-driven integrations
• Experience with Microsoft Entra ID / Azure AD authentication and permissions
• Experience with SQL and REST APIs
• Ability to independently deliver integrations and troubleshoot production issues
• English B2+
   

Strong advantage

• Microsoft Graph Communications / Cloud Communications APIs
• Teams calls / online meetings / call records / recordings / participants
• Real-time audio/media
• VoIP / telephony
• WebRTC
• SIP / RTP
• Direct Routing
• Azure Communication Services
• High-load or distributed systems
   

About the project

This is a long-term product, not a short-term integration project. You’ll join a stable development team with an ongoing roadmap and deep involvement in the Microsoft Teams ecosystem.

The role combines backend engineering, cloud infrastructure, Microsoft Graph integrations, Teams bot development, and real-time communication functionality.
 

What we offer

• Long-term cooperation
• Full-time engagement
• Stable US-based client
• Predictable workload
• Paid vacation and sick leave
• Professional development support
• Equipment provided
• Office lunches
• Anniversary and baby bonuses