Windows Systems Development Engineer

4 days ago

Bengaluru, India InstaSafe Technologies Private Limited Full time

Job Description About InstaSafe InstaSafe is a Zero Trust cybersecurity leader, empowering enterprises to secure applications, data, and endpoints across hybrid and cloud environments. Our Zero Trust Network Access (ZTNA), Identity & Access Management (IAM), and Multi-Factor Authentication (MFA) solutions protect over 500,000 endpoints globally, including some of the world’s largest enterprises. We are seeking a Windows Systems Engineer to design and develop security agents and authentication modules for Windows endpoints. This includes the ISA Windows Agent , ZTA Windows Agent , Windows Credential Provider , and Windows MFA integrations , which are key to enforcing Zero Trust access on enterprise desktops and servers. Role Overview The Windows Systems Engineer will build low-level Windows system agents and authentication components that interact directly with Win32 APIs, Windows Registry, Active Directory APIs, and Windows Credential Providers . This role requires deep experience with C/C++/C# , Windows Service development, and secure integration into Windows authentication and networking layers. Duties & Responsibilities Agent Development : Design and maintain Windows endpoint agents that enforce Zero Trust access policies. Authentication Integration : Implement and extend Windows Credential Provider APIs , Active Directory APIs , and MFA workflows (RADIUS, LDAP, AD). Service Development : Build and manage Windows Services that run securely in enterprise environments. Networking & Security : Integrate with VPN/ZTNA protocols (OpenVPN, IPSec) and ensure secure communication using TLS/SSL . System-Level Work : Work with Windows Registry , COM Interfaces, and packaging/distribution using MSI installers . Debugging & Troubleshooting : Use advanced debugging tools (WinDbg, Process Explorer, SysInternals suite). Cross-Platform Collaboration : Work with Linux/Mac agent teams to ensure consistent features across platforms. Continuous Improvement : Stay current with Windows security advancements, hardening practices, and APIs. Requirements Qualifications & Skills Education & Experience: Bachelor’s/Master’s degree in Computer Science, Engineering, or equivalent. 4–7 years’ experience in Windows system-level programming. Core Technical Skills (with links for TA reference): C Programming / C++ / C# Win32 APIs Windows Service Development Windows Registry Programming Active Directory APIs Windows Credential Provider APIs COM Interfaces MSI Packaging OpenVPN / IPSec integration Debugging with WinDbg , SysInternals Preferred/Good-to-Have: Experience with Windows MFA SDKs and RADIUS/LDAP integrations. Familiarity with Azure AD/Entra ID APIs for modern authentication. Experience with endpoint security software or VPN clients . Exposure to Agile/CI/CD development workflows. Benefits Career Value Proposition Build mission-critical Windows agents used in enterprise environments worldwide. Work directly with core Windows authentication flows to deliver cutting-edge Zero Trust solutions. Collaborate with top engineers across security, networking, and OS platforms. Gain expertise in enterprise-grade Windows security engineering .

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