Windows Kernel Driver Engineer (Minifilter)

Windows Kernel Driver Engineer (Minifilter) 

Location: Pune, MH or Gandhinagar, GJ 

Experience: 5–10 years 

Employment Type: Full-time  

About the Role 

ATRI Solutions is looking for a Windows Kernel Driver Engineer to develop Everest's Windows kernel-mode component — a minifilter driver that intercepts file system I/O (IRPs) to enable transparent, seamless cloud tiering of surveillance video, functionally mirroring the Linux KMD. 

Key Responsibilities 

1. Design and implement a Windows minifilter driver using the Windows Driver Kit (WDK) 
2. Handle and complete IRPs (IRP_MJ_READ, IRP_MJ_WRITE, IRP_MJ_CREATE, etc.), including the option to pend I/O and complete asynchronously after a cloud fetch 
3. Write robust kernel-mode C/C++ respecting IRQL constraints, cancellation, and fast-mutex/spinlock synchronization 
4. Debug driver issues using WinDbg, kernel dumps, and Driver Verifier 
5. Manage filter altitude registration and interaction with other filters in the I/O stack 
6. Ensure every code path that acquires a lock or resource releases it correctly, including newly-reachable paths introduced by feature changes 
7. Support driver signing, HLK/WHQL testing, and safe install/upgrade/uninstall lifecycle 

Mandatory Skills 

Must-Have 

• Windows Driver Kit (WDK) minifilter driver development experience 

• Strong understanding of IRP handling and completion routines (including pending/async completion) 

• Proficient C/C++ kernel-mode programming 

• Kernel debugging with WinDbg (dumps, breakpoints, !analyze) 

• File system filter driver architecture, including altitude/registration concepts 

• Kernel-mode synchronization primitives (spinlocks, fast mutexes) and IRQL-aware coding 

• Familiarity with driver signing and HLK/WHQL testing/certification processes 

Nice-to-Have Skills 

Good-to-Have 

• Comparative architecture knowledge of ProjFS/CFAPI (cloud-file-provider style approaches) 

• Experience with Storport/miniport or other Windows driver classes 

• WPP/ETW tracing experience for production diagnostics 

• Prior work on hierarchical storage management (HSM) or backup-tiering drivers