RemoteLeaf Logo
Log in Sign up

Senior Windows Extension Developer (Contractor)

5 days, 8 hours ago
Mexico
Contract
Senior
Systems Engineer
Software Development
Azure C++ CI/CD GitHub Actions WebSockets
Apply Now
Tech Holding

Tech Holding

Tech Holding: California's #1 website design company offering full-service technology consulting with expertise in software management, AI, and security.

Internet Software & Services
51-250
Founded 2016
View All Jobs 17

Description

  • Design and implement a Windows Cloud Files API sync provider with placeholder management and hydration/dehydration callbacks.
  • Build Windows Shell integration, including overlay icons, context menus, and Explorer integration via COM.
  • Own Win32 and NTFS-level file system interactions such as extended attributes, reparse points, and oplocks.
  • Implement high-performance concurrent file transfer handling using IOCP and Windows thread pool APIs.
  • Write and maintain COM servers and in-process shell extensions that meet Windows reliability and compatibility requirements.
  • Debug race conditions, kernel-mode interactions, and edge cases caused by antivirus software, Group Policy, and varied hardware configurations.
  • Maintain backward compatibility across Windows 10 and Windows 11, including enterprise and consumer SKUs.
  • Instrument and troubleshoot production issues using ETW tracing, WPR/WPA profiling, and crash dump analysis.
  • Collaborate with QA to develop stress tests, fuzz tests, and automated regression suites for the sync engine.
  • Participate in architecture and design reviews and help establish engineering standards for the Windows client codebase.

Requirements

  • 5+ years of Windows systems programming in C++ with deep mastery of Win32 APIs, NTFS internals, and COM.
  • Strong hands-on experience with the Windows Cloud Files API, including placeholder files, hydration callbacks, pin/unpin semantics, and range-based partial hydration.
  • Demonstrated expertise in Windows Shell integration, including overlay icon handlers, context menu shell extensions, and Explorer namespace extensions via COM.
  • Solid multithreading experience using IOCP, Windows thread pools, and synchronization primitives such as events, mutexes, critical sections, and slim reader/writer locks.
  • Must have shipped at least one production Windows sync client, cloud storage client, backup agent, or equivalent.
  • Experience with Windows kernel-mode development, such as filter drivers or minifilters, or deep knowledge of the Windows I/O stack, preferred.
  • Familiarity with Windows security concepts such as ACLs, privilege management, integrity levels, and UAC, preferred.
  • Prior work on enterprise software distributed via MSI/MSIX with silent install and Group Policy support, preferred.
  • Experience maintaining large-scale C++ codebases with CI/CD pipelines such as GitHub Actions or Azure DevOps, preferred.
  • Familiarity with WinRT APIs and bridging classic Win32 components to Windows Runtime environments, preferred.

Benefits

  • Fully remote engagement across MX.
  • Opportunity to work on high-impact client systems with real operational ownership.
  • Contract employment type.

Interested in this position?

Apply directly on the company website

Apply Now

Similar Roles

Ensono

Senior Mainframe Systems Programmer - Run Automation

Ensono 1K-5K IT Services

Ensono is seeking a Mainframe Automation professional to help design and improve automation across mainframe platforms and integrate solutions into internal tools and platforms.

United States Full-time Senior Systems Engineer
$85k-$148k
Agile GitHub JIRA Kanban Scrum
38 minutes ago
Ensono

Senior Systems Programmer - Storage

Ensono 1K-5K IT Services

Ensono is hiring an experienced Mainframe Disaster Recovery Systems Programmer to support a large-scale z/OS disaster recovery drill focused on mainframe storage operations.

United States Full-time Senior Systems Engineer
2 hours, 53 minutes ago
Ensono

Senior Mainframe Systems Programmer - z/OS

Ensono 1K-5K IT Services

Ensono is seeking a Senior Mainframe Systems Programmer to support installation, maintenance, troubleshooting, and implementation of z/OS operating systems and related system software in a large enterprise environment.

United States Full-time Senior Systems Engineer
$85k-$148k
1 day, 17 hours ago
Veeam Software

Senior Sales Systems Engineer (VCSP)

Veeam Software 1K-5K Internet Software & Services

Veeam is hiring a VCSP Pre-Sales Systems Engineer to advise service provider partners on resilient, secure data architectures and cyber recovery solutions across hybrid, multi-cloud, and SaaS environments.

Canada Full-time Senior Sales Engineer Systems Engineer
$178k-$330k
AWS Azure GCP Kubernetes Linux LLM Machine Learning
5 days ago

You're on a roll! Sign up now to keep applying.

Sign Up

Already have an account? Log in

Used by 14,729+ remote workers