.NET Engineer

We’re looking for a .NET Engineer to join a product team developing a platform for voice communications and Microsoft Teams integrations.
You’ll work primarily on the backend, building services that support Teams calls, meetings, recordings, and communication data. A key part of the role is integrating the product with Microsoft Teams and ensuring these integrations remain stable and reliable in production.

What you’ll do
Build and enhance backend services with C#, .NET, and ASP.NET Core
Develop integrations with Microsoft Teams
Work extensively with Microsoft Graph API and Teams communication APIs
Implement functionality related to calls, meetings, recordings, and communication data
Create and maintain REST APIs and integrations with external services
Investigate and fix production issues related to Teams and voice functionality
Help improve the platform’s performance, reliability, and scalability
Contribute to architectural discussions and technical improvements

What we expect
3+ years of commercial experience with C# / .NET
Strong experience building backend applications with ASP.NET Core
Proven commercial experience integrating products with Microsoft Teams
Hands-on knowledge of Microsoft Graph API
Experience with Teams calls, meetings, recordings, or communication APIs
Experience building integrations with third-party systems and APIs
Solid understanding of SQL, databases, and backend architecture
Ability to troubleshoot and solve technical issues independently
English — B2+

Good to have
Microsoft Graph Communications / Calls & Meetings APIs
Experience with Teams compliance recording or call-recording solutions
Previous work with VoIP, telephony, voice, or contact center products
Knowledge of real-time audio or media processing
WebRTC, SIP, RTP
SignalR / WebSockets
Azure

You’re a backend-oriented .NET Engineer who has already worked with Microsoft Teams integrations in a commercial environment and understands the challenges of communication-focused products.
Beyond strong .NET skills, we’re looking for someone familiar with the practical side of calls, meetings, recordings, and voice integrations, including supporting and troubleshooting them in production.

What’s In It for You?
Career Growth – Opportunities to develop and advance.
Performance Reviews – Regular feedback and support.
Work Anniversaries – Special gifts to celebrate milestones.
Flexible Work – Hybrid or remote (Lviv office available).
Mentorship – Guidance from experienced professionals.
Accounting Support – We handle the paperwork.
Paid Time Off – 18 vacation days + 5 sick days per year.
Extra Leave – 10 additional days off annually.
Free Office Lunches – Enjoy meals on us.
Team Events – Gatherings, gifts, and a welcoming atmosphere.