Senior Windows Systems Administrator

Job Description

• This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Windows Systems Administrator in India. This role is part of a global infrastructure environment supporting enterprise-scale systems across AWS, on-premises platforms, and Microsoft technologies. You will be responsible for ensuring the stability, performance, and security of complex Windows Server ecosystems that underpin critical business applications. The position requires deep technical expertise in Windows administration, Active Directory, and hybrid cloud environments, along with the ability to troubleshoot high-impact issues. You will work closely with cloud, security, and application teams to deliver reliable and scalable infrastructure services. The role also emphasizes automation, leveraging PowerShell and AI-assisted tools to improve operational efficiency. As a senior-level professional, you will act as a technical reference point and mentor for junior administrators while contributing to continuous infrastructure improvements. This is a hands-on, high-ownership role in a fast-paced, globally distributed environment.
• Accountabilities You will be responsible for managing, optimizing, and evolving enterprise Windows-based infrastructure across cloud and on-prem environments while ensuring high availability and operational excellence. Design, implement, administer, and maintain enterprise Windows Server environments across AWS and on-premises infrastructure Manage Active Directory services including domain controllers, replication, sites and services topology, and directory-level troubleshooting Administer Windows Server workloads on AWS, including EC2 provisioning, AMI deployment, storage management, and AD integrations Maintain and support DNS and DHCP services, ensuring reliability, performance, and correct configuration across environments Support Microsoft Exchange environments, including Exchange Online and on-prem versions, mailbox migrations, and troubleshooting Manage Windows file services including DFS namespaces, permissions, and enterprise-level storage structures Develop and maintain PowerShell automation scripts to improve system reliability and operational efficiency Implement and manage patching processes using WSUS and related update management tools Monitor system performance, troubleshoot complex infrastructure issues, and ensure service stability Participate in incident, change, and problem management processes using ServiceNow Collaborate with cloud, security, and application teams to ensure secure, reliable infrastructure operations Contribute to operational improvements, documentation, and infrastructure standardization initiatives Provide technical guidance and mentorship to junior system administrators Participate in on-call rotation and support global infrastructure operations Requirements The ideal candidate brings strong enterprise Windows administration experience combined with deep knowledge of hybrid cloud environments and automation practices. 5+ years of hands-on experience in Windows Server administration within enterprise environments Strong expertise in Active Directory, including domain controllers, replication, Sites and Services, and troubleshooting tools Solid experience with Windows Server 2016–2025 environments Deep understanding of DNS architecture, including AD-integrated zones, forward/reverse lookups, and zone management Strong experience with DHCP administration, including failover, scope configuration, and load balancing Experience managing enterprise file services, including DFS namespaces and large-scale storage environments Advanced PowerShell scripting skills for automation, troubleshooting, and operational improvements Hands-on experience with AWS infrastructure, particularly Windows EC2 provisioning and management Experience supporting Microsoft Exchange Online and on-prem Exchange environments Familiarity with Microsoft 365 and Entra Connect (AD Sync) Experience using ServiceNow for incident, change, and problem management Strong troubleshooting, analytical thinking, and problem-solving abilities Excellent communication skills and ability to collaborate across technical teams Ability to work independently while supporting mission-critical systems in a global environment Bachelor’s degree in IT, Computer Science, or equivalent experience Benefits Competitive compensation package aligned with experience Fully remote work flexibility (as per role structure) Opportunity to work on large-scale enterprise Windows and cloud infrastructure Exposure to AWS, hybrid environments, and Microsoft enterprise technologies Career development in a global, technology-driven organization Collaborative and inclusive work culture On-call compensation and structured rotational support model Learning opportunities in automation, AI-assisted operations, and cloud modernization
• How Jobgether works: We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team. We appreciate your interest and wish you the best! Why Apply Through Jobgether? Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time. #LI-CL1
• We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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