C# Developer

Responsibilities

• Design, develop, and maintain desktop applications and internal tools using C# and .NET
• Build and maintain software installers (e.g., MSI, EXE) using tools such as WiX, InstallShield, or similar
• Develop automation utilities to support deployment, configuration, and diagnostics
• Collaborate with DevOps and QA to improve build, release, and deployment pipelines
• Troubleshoot installation issues and ensure reliable upgrade and rollback mechanisms
• Write clean, maintainable, and well-documented code
• Participate in code reviews and contribute to best practices
• Optimize performance and reliability of tools and installer processes
• Work with product teams to understand requirements and translate them into technical solutions

Requirements

• 3–5 years of professional experience in software development
• Strong proficiency in C# and .NET (Framework or .NET Core/5+)
• Experience building Windows desktop applications (WinForms, WPF, or similar)
• Hands-on experience with installer technologies (WiX preferred, or InstallShield/NSIS)
• Solid understanding of Windows OS, file systems, registry, and services
• Experience with version control systems (e.g., Git)
• Strong debugging and problem-solving skills
• Strong attention to detail, especially in reliability and edge cases
• Ability to work independently and manage priorities
• Good communication skills and ability to collaborate across teams

Preferred Qualifications

• Experience with PowerShell or scripting for automation
• Familiarity with CI/CD pipelines (Azure DevOps, GitHub Actions, Jenkins, etc.)
• Knowledge of packaging and deployment best practices
• Experience with MSI customization, custom actions, and upgrade strategies
• Exposure to security practices related to installers and system-level tools
• Basic understanding of networking or system administration concepts
• Experience with driver or low-level system integrations
• Familiarity with virtualization or endpoint environments
• Experience working on security-focused or enterprise software tools

About the Company

ThreatLocker® is a leader in endpoint protection technologies, providing enterprise-level cybersecurity tools to improve the security of servers and endpoints. The ThreatLocker® platform provides Application Allowlisting, Ringfencing™, Storage Control, and other leading solutions to block the exploits of application vulnerabilities.