About the Role

Layer2 GmbH is seeking an experienced Senior Developer to strengthen the product team behind ShArc, an innovative cloud storage optimization platform. ShArc helps enterprises significantly reduce their Microsoft 365 storage costs by automatically moving infrequently used files from SharePoint to Azure Blob Storage based on configurable rules—while users maintain their familiar workflows in SharePoint, Teams, and OneDrive. Files remain visible and can be instantly restored when needed.

You'll work on a production system already managing millions of files in international deployment, solving complex technical and architectural challenges while ensuring the product remains robust, maintainable, and scalable for the future.

Key Responsibilities

Develop and maintain backend services powering large-scale file management
Integrate deeply with Microsoft 365 APIs and SharePoint ecosystems
Build systems handling massive volumes of files with optimal performance and reliability
Enhance system reliability, performance, and scalability
Manage complex SharePoint document libraries, metadata, and version histories
Diagnose and resolve intricate issues in distributed systems
Work with Azure cloud infrastructure (Blob Storage, App Services)

Required Skills & Technologies

.NET / F# programming expertise
Microsoft Azure cloud platform (Blob Storage, App Services)
SharePoint APIs (Microsoft Graph, REST, CSOM)
Blazor framework experience
Strong backend architecture and system design knowledge

Nice-to-Have Experience

Azure Storage optimization and best practices
Microsoft 365 ecosystem (particularly SharePoint or Graph API)
Distributed systems and file management at scale

What We Offer

Remote-first culture: Work primarily from home with optional access to Hamburg office
Flexible location: Only 2-3 in-person meetings annually (48-hour advance notice required)
Work-life balance: Time and location independence
Secure growth: Stable position with cutting-edge Microsoft technology stack
Collaborative environment: Transparent, peer-level teamwork
Modern workplace: Latest development tools and infrastructure

Hiring Process

Step 1: Casual 20-minute Microsoft Teams interview (video or audio)

Step 2: Technical interview up to 1.5 hours with team members

Step 3: 6-hour in-person day at Hamburg office to meet the full team

Our goal: You leave with a signed contract after meeting everyone.

Layer2 GmbH

Open Positions (1)

Senior Developer (.NET/F#) - Microsoft 365 & SharePoint