Flexsin Technology

2 weeks ago

Noida, Uttar Pradesh, India Flexsin Inc. Full time ₹ 1,04,000 - ₹ 1,30,878 per year

Job Description
We are seeking a Windows C Developer with strong expertise in C programming for the Windows platform.

The Ideal candidate should carry strong proficiency in TCP/IP socket programming, Windows networking APIs, and Packet manipulation.

Should have hands-on experience with Windows Firewall APIs or equivalent packet-filtering frameworks with a strong background in building MSI installers/uninstallers (WiX Toolset, InstallShield, or similar).

Responsibilities
Network Programming :

  • Develop, maintain, and optimize C-based applications with TCP/UDP socket programming.
  • Implement secure and efficient communication protocols for Windows environments.
  • Debug and optimize network performance under various load conditions.

Firewall & Security Programming

  • Design and implement Windows firewall rule management via C-based APIs.
  • Integrate custom security modules for packet filtering, intrusion detection, and connection validation.
  • Work with low-level Windows APIs for firewall and networking control.

Build & Compilation

  • Configure and maintain CMake build scripts for cross-platform and Windows-specific builds.
  • Manage Visual Studio solutions/projects to ensure reliable compilation and deployment.

Installer / Uninstaller Development

  • Build MSI packages for application installation and uninstallation using WiX Toolset or equivalent.
  • Automate installer builds with CMake and Visual Studio integration.
  • Ensure MSI packages meet enterprise deployment requirements (silent install, digital signing, rollback).

Code Quality & Maintenance

  • Write clean, modular, and well-documented code following industry best practices.
  • Conduct code reviews and unit testing.
  • Maintain version control (Git) and participate in CI/CD workflows.

Required Skills & Experience

  • Candidate must have a Bachelor's degree in Technology/software programming.
  • 4+ year experience and strong proficiency in C programming for Windows platforms.
  • Proven experience in TCP/IP socket programming, Windows networking APIs and Packet manipulation.
  • Hands-on experience with Windows Firewall APIs or equivalent packet-filtering frameworks.
  • Proficiency in CMake and Microsoft Visual Studio build environments.
  • Strong background in building MSI installers/uninstallers (WiX Toolset, InstallShield, or similar).
  • Solid understanding of Windows OS internals and debugging tools (WinDbg, Process Monitor, etc.
  • Experience with secure coding practices and network security fundamentals.
  • Familiarity with source control systems (Git, SVN).

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