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
- Robust 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