.NET Software Engineer

.NET Engineer (Microsoft Teams / Voice Platform)

We are looking for a .NET Engineer to join a long-term product project focused on voice communication and Microsoft Teams integrations.

The platform works with calls, meetings, recordings, and communication data. You’ll develop backend services and integrations connecting the product with the Microsoft Teams ecosystem.

Responsibilities

Develop and maintain backend services using C# / .NET and ASP.NET Core

Design and optimize backend components working with SQL databases

Build and support Microsoft Teams integrations

Work with Microsoft Graph API and Microsoft Graph Communications APIs

Implement functionality related to calls, meetings, call records, recordings, participants, and communication data

Develop and maintain REST APIs and third-party integrations

Troubleshoot production issues related to Teams and voice functionality

Improve backend performance, stability, and scalability

Contribute to architecture and technical decisions

Requirements

5+ years of commercial C# / .NET development experience

Strong knowledge of C# and .NET fundamentals

Strong experience with ASP.NET Core and backend development

Strong SQL knowledge and hands-on experience with relational databases

Good understanding of REST APIs, integrations, and backend architecture

Hands-on commercial experience with Microsoft Graph API

Experience with Microsoft Graph Communications / Cloud Communications APIs, or strong theoretical knowledge of these APIs

Understanding of APIs and concepts related to Teams calls, meetings, call records, recordings, participants, and communication data

Ability to independently investigate and solve technical and production issues

English: B2+

Will be a plus

Hands-on commercial experience with Microsoft Graph Communications / Cloud Communications APIs

Microsoft Teams compliance recording or call-recording solutions

Experience with VoIP, telephony, UCaaS/CCaaS, or contact center platforms

Real-time audio/media processing experience

Knowledge of WebRTC, SIP, or RTP

Experience with SignalR / WebSockets

Strong experience with Azure

What We Offer

Long-term product project

Transparent compensation

Paid vacation and sick leave

Learning and professional development support

High-quality equipment

Paid office lunches

Anniversary gifts and baby bonus