Senior Developer - CFAPI (Cloud Files API)

Magnet HR Tech Digital • Professional Services • Human Resources • C# • Assembly • 1 day ago
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Salary
≈ $16k – $37k per year (Estimated)
Location
In office (Gurgaon)
Seniority
Senior · 7+ years exp
Employment
Full-Time

First seen by Alion on Oct 25, 2026.

Overview
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Magnet HR Tech Digital

Expert HR consulting services to transform your workforce. Talent acquisition, performance management, and strategic HR solutions.
magnethrconsultingservices.com • Bengaluru • Mumbai • Hyderabad • Thiruvananthapuram • Noida • Recruiting & Staffing • Human Resources • Professional Services • Est. 2021
Tech stack of Magnet HR Tech Digital
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

Good 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

Skills: c#,windows,cfregistersyncroot
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