Experience: 7 – 8 Years

Location - Gurugram

Work Mode - WFO

Indian Shift Timing - 8:30 AM to 5:30 PM

Preferred Experience Level - 7 to 8+ Years

Summary: We need a CFAPI specialist, not a general Windows or C# developer.

Responsibilities

- Design and develop CFAPI-based sync clients in C# and Windows APIs
- Implement Sync Root registration, placeholders, hydration/dehydration, pin/unpin, sync states, and fetch-data/fetch-placeholders callbacks
- Integrate with cloud storage and backend services
- Handle async operations, concurrency, cancellation and error handling
- Troubleshoot sync failures, file locks, hydration and connectivity issues
- Optimize performance and reliability, and take part in design, code reviews, testing and production support

Must-Have Skills

- 7 - 8+ years in software development
- Hands-on CFAPI expertise (CfRegisterSyncRoot, CfConnectSyncRoot,



CfCreatePlaceholders, CfExecute, CfHydratePlaceholder, CfDehydratePlaceholder, CfSetPinState, CfSetInSyncState)
- Proven experience building cloud drive or file sync solutions
- Strong C#, P/Invoke and interop
- Solid understanding of Windows and NTFS file-system concepts
- Strong async programming, multithreading and debugging skills

Valuable to Have Skills

- OneDrive-like app experience
- Windows Shell integration
- Reparse points, file handles and locking
- Windows Services, REST APIs and cloud storage platforms
- C++/Win32, WinDbg and Visual Studio debugging
- Large-scale Windows client applications

Pay: ₹1,900,000.00 - ₹2,000,000.00 per year

Work Location: In person

📌 Senior Developer - CFAPI (Cloud Files API) (Gurugram)
🏢 Classic Solutions
📍 Gurugram