Job Title: Windows System Administrator – Level 3

Job Title: Windows System Administrator – Level 3

Location: Vadodara, Gujarat (On-Site) Job Type: Full-Time | Permanent | On-Roll

About the Role

We are seeking a highly experienced Windows System Administrator – Level 3 to join our growing IT infrastructure team supporting global MSP clients.The Level 3 Administrator will serve as a senior technical escalation point responsible for resolving complex infrastructure issues, designing and optimizing enterprise environments, leading technical projects, and providing technical direction to L1 and L2 teams.The ideal candidate will have deep expertise in Windows Server, Active Directory, networking, virtualization, Microsoft 365, Azure/AWS, security, PowerShell automation, backup, disaster recovery, and infrastructure architecture.This is a senior, client-facing technical role requiring strong ownership, analytical thinking, technical leadership, and the ability to operate independently in complex multi-client environments.

Key Responsibilities

1. Senior Technical Escalation & Root-Cause Analysis

• Act as the highest technical escalation point for complex infrastructure incidents.
• Resolve critical and business-impacting issues escalated from L1/L2 teams.
• Perform advanced troubleshooting and root-cause analysis across Windows, networking, virtualization, cloud, and security environments.
• Lead major incident investigations and coordinate technical recovery activities.
• Identify recurring issues and implement permanent corrective actions.
• Provide technical recommendations to improve system reliability, performance, and security.

2. Advanced Windows Server & Active Directory

• Design, implement, administer, and optimize enterprise Windows Server environments.
• Provide advanced administration of Active Directory, DNS, DHCP, Group Policy, Certificate Services, and related infrastructure.
• Troubleshoot complex AD replication, authentication, trust, DNS, GPO, and identity issues.
• Design and implement Group Policy and security configurations.
• Perform server architecture reviews, capacity planning, upgrades, and lifecycle management.
• Develop standards and best practices for Windows infrastructure across client environments.

3. Network & Infrastructure Architecture

• Troubleshoot and design solutions for complex LAN/WAN, VPN, firewall, routing, DNS, DHCP, VLAN, and connectivity environments.
• Work with network and security teams to resolve cross-platform infrastructure issues.
• Review network architecture and recommend improvements.
• Support complex firewall, VPN, and hybrid connectivity implementations.
• Coordinate with ISPs, vendors, and third-party technical teams during critical incidents.

4. Cloud & Hybrid Infrastructure

• Design, implement, and optimize Azure and AWS infrastructure.
• Manage cloud compute, networking, storage, backup, identity, monitoring, and security services.
• Support hybrid environments integrating on-premises Active Directory with cloud identity platforms.
• Design and troubleshoot hybrid connectivity and migration solutions.
• Perform cloud infrastructure assessments and recommend cost, performance, security, and reliability improvements.
• Lead complex cloud migration and modernization initiatives.

5. Virtualization & Enterprise Infrastructure

• Design, administer, and optimize VMware vSphere/ESXi and Microsoft Hyper-V environments.
• Troubleshoot complex virtualization, storage, networking, and performance issues.
• Plan and execute virtualization upgrades, migrations, and infrastructure changes.
• Develop capacity and availability strategies for virtual infrastructure.
• Evaluate infrastructure performance and recommend optimization initiatives.

6. Security, Hardening & Incident Response

• Lead technical implementation of infrastructure security controls.
• Perform advanced vulnerability remediation and system hardening.
• Investigate and respond to infrastructure-level security incidents.
• Analyze security logs and system events to identify potential threats.
• Implement security best practices across Windows, Active Directory, cloud, virtualization, and endpoint environments.
• Support security assessments, audits, compliance requirements, and remediation programs.
• Work closely with security teams during major incidents.

7. Backup & Disaster Recovery

• Design and maintain enterprise backup and disaster recovery strategies.
• Review backup architecture, retention policies, replication, and recovery objectives.
• Lead disaster recovery testing and recovery validation.
• Troubleshoot complex backup and restore failures.
• Develop and maintain business continuity and recovery procedures.
• Recommend improvements to improve recovery time and recovery point objectives.

8. PowerShell & Automation

• Develop advanced PowerShell scripts and automation solutions.
• Automate infrastructure provisioning, monitoring, reporting, remediation, and administrative processes.
• Develop reusable tools and scripts for L1/L2 teams.
• Integrate automation with RMM and monitoring platforms.
• Identify repetitive operational processes and develop scalable automation solutions.

9. Monitoring & Infrastructure Optimization

• Design and maintain proactive monitoring strategies across client environments.
• Develop monitoring thresholds, alerts, and automated remediation processes.
• Analyze infrastructure trends and proactively identify capacity or performance risks.
• Review RMM/monitoring policies and improve alert quality.
• Drive proactive infrastructure improvements before issues impact clients.

0. Architecture, Projects & Migrations

• Lead infrastructure projects including server upgrades, datacenter migrations, virtualization projects, cloud adoption, Microsoft 365 migrations, and hybrid infrastructure implementations.
• Develop technical designs, implementation plans, rollback plans, and validation procedures.
• Assess technical risks and dependencies before project execution.
• Coordinate with clients, vendors, project managers, and internal technical teams.
• Ensure successful implementation with minimal business disruption.
• Conduct post-project reviews and document lessons learned.

1. Technical Leadership & Mentorship

• Provide technical leadership and mentoring to L1 and L2 administrators.
• Review complex technical escalations and provide guidance on troubleshooting approaches.
• Develop internal standards, procedures, and technical documentation.
• Conduct technical training and knowledge-sharing sessions.
• Identify skills gaps within the team and recommend training initiatives.
• Participate in continuous improvement of MSP processes and technical services.

2. Client Advisory & Technical Consulting

• Act as a senior technical contact for key MSP clients.
• Participate in technical discussions, infrastructure reviews, and solution planning.
• Translate business requirements into practical technical solutions.
• Provide recommendations around security, performance, scalability, availability, and modernization.
• Build strong technical relationships with client stakeholders.

Qualifications & Experience

• Education: Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field preferred.

Experience: Minimum 5–7+ years of experience in Windows infrastructure/system administration, with significant enterprise or MSP experience.

• Proven experience handling complex infrastructure environments.
• Prior experience in an MSP or multi-client environment is highly desirable.
• Strong client-facing and international technical support experience is preferred.

Certifications – Preferred

• Microsoft Certified: Azure Administrator Associate
• Microsoft Certified: Azure Solutions Architect Expert
• Microsoft 365 / Identity certifications
• VMware VCP or equivalent
• CompTIA Security+
• Relevant cloud, networking, or security certifications

Technical Proficiency

• Advanced Windows Server administration and troubleshooting.
• Advanced Active Directory, DNS, DHCP, GPO, and identity management.
• Strong networking and infrastructure troubleshooting.
• Advanced Microsoft 365 administration.
• Strong Azure/AWS infrastructure knowledge.
• Advanced VMware/Hyper-V administration.
• Backup and disaster recovery architecture.
• Advanced PowerShell scripting and automation.
• Infrastructure monitoring and RMM platforms.
• Security hardening and incident response.
• Infrastructure design, migration, and optimization.

Soft Skills & Competencies

• Excellent verbal and written communication skills in English.
• Strong technical leadership and decision-making ability.
• Exceptional troubleshooting and analytical skills.
• Ability to manage critical incidents under pressure.
• Strong client-facing and consulting skills.
• Ability to independently own complex technical problems from identification through resolution.
• Strong documentation and knowledge-sharing skills.
• Ability to mentor technical teams and drive continuous improvement.

Preferred Candidate Profile

• Senior infrastructure professionals with strong Windows and enterprise systems experience.
• Candidates with significant MSP/multi-client experience are highly preferred.
• Experience supporting global clients and handling international voice-based technical escalations is an advantage.
• Proven experience leading infrastructure projects and complex migrations.
• Strong problem-solving mindset with a focus on permanent solutions rather than temporary fixes.
• Candidates who can provide technical leadership while remaining hands-on are strongly encouraged to apply.Join our team as a senior technical leader and help design, maintain, secure, and optimize enterprise infrastructure environments supporting global clients