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System Administrator

Job Description - System Administrator

1. Active Directory (AD)

  • Manage and
    maintain Active Directory (AD) infrastructure, including creating and
    managing users, groups, and organizational units (OUs).

  • Configure
    and enforce Group Policies (GPOs) to ensure security and compliance.

  • Implement
    and maintain AD roles, including DNS, DHCP, and Certificate Services.

  • Monitor
    replication and resolve AD synchronization issues between domain
    controllers.

  • Perform
    periodic audits of AD permissions, accounts, and roles to ensure
    compliance.

  • Plan and
    execute domain migrations or integrations during organizational changes.

2. Exchange Server

  • Install,
    configure, and manage Microsoft Exchange Server environments.

  • Monitor
    email flow, queues, and mailbox databases for performance and health.

  • Configure
    and manage email security policies, spam filters, and data loss prevention
    (DLP).

  • Perform
    Exchange migrations, including on-premises to Office 365 or hybrid setups.

  • Manage
    email archiving, retention policies, and compliance requirements.

  • Troubleshoot
    issues related to mail delivery, access, or synchronization across
    devices.

3. Virtualization

  • Deploy
    and manage virtualization platforms, such as VMware vSphere, Microsoft
    Hyper-V, Nutanix AHV and OLVM.

  • Monitor
    and optimize the performance of virtual machines (VMs) and hosts.

  • Create
    and manage virtual networks, storage, and resource pools.

  • Perform
    VM backups and recoveries, ensuring business continuity.

  • Implement
    high-availability and disaster recovery solutions for virtualized
    environments.

  • Plan and
    execute upgrades of hypervisors and virtual infrastructure.

4. Linux Administration

  • Install,
    configure, and maintain Linux servers (e.g., Oracle Linux, Ubuntu, Red
    Hat).

  • Manage
    user accounts, permissions, and secure access using SSH or PAM.

  • Monitor
    Linux system performance.

  • Configure
    and manage Linux-based services, such as web servers (Apache), databases,
    and DNS.

  • Apply
    patches, updates, and security hardening.

5. Backup Administration

  • Configure
    and manage enterprise backup solutions (Veeam).

  • Develop
    and maintain backup policies.

  • Ensure
    backups are tested regularly for recoverability and compliance with
    RTO/RPO.

  • Manage
    tape backups, offsite storage, and replication to disaster recovery sites.

  • Integrate
    database-specific backup tools like Oracle RMAN.

  • Monitor
    backup jobs and troubleshoot failures or performance bottlenecks.

6. Storage Management

  • Manage
    and monitor SAN/NAS/VSAN storage systems and ensure optimal performance.

  • Configure
    RAID levels (e.g., RAID 1, RAID 5) for redundancy and performance.

  • Allocate
    and manage storage volumes and LUNs for server and application needs.

  • Monitor
    storage capacity and plan for future expansions.

  • Implement
    data deduplication, compression, and replication where applicable.

7. Monitoring

  • Deploy
    and manage monitoring tools, such as ManageEngine tools.

  • Configure
    alerts and notifications for critical system, network, or application
    metrics.

  • Monitor
    CPU, memory, disk usage, and network performance for anomalies.

  • Analyze
    logs to identify trends, potential issues, or security breaches.

  • Generate
    and distribute reports on system health, performance, and capacity
    planning.

  • Automate
    monitoring tasks using scripts.



Requirements

  • Qualifications
    and Skills:

    1. Educational Qualifications:

    • Bachelor’s
      degree in Computer Science, Information Technology, or a related field.

    2. Work Experience:

    • At
      least
      3
      years
      of hands-on experience in the field.

    • Experience
      in Microsoft based operating systems, Active Directory, DNS, DHCP,
      Exchange Server, Enterprise Backup Soulitions and Linux Administrator.

    3. Technical Skills:

    • Problem-Solving
      and Administration.

    • Cloud
      computing.

    • Proficiency
      in managing virtualization platforms (VMware, AHV, OLVM and micrsoft
      hyper-v).

    • Expertise
      in Oracle Linux installation, configuration, and administration.

    • Knowledge
      of RAID configurations (RAID 1, RAID 5).

    • Hands-on
      experience with backup tools (Veeam, Oracle RMAN).

    • Strong
      understanding of networking concepts, protocols, and firewalls.

    • Familiarity
      with storage systems, including SAN, NAS,iSCSI and VSAN.

    • Vendor
      Management: Work with third-party vendors and ensure SLA compliance.

    • RFP
      Preparation: Draft RFPs, evaluate bids, and recommend solutions.

    • Analysis:
      Perform cost-benefit analysis and recommend improvements.

    4. Certifications (Optional but Preferred):

    • Red Hat
      Certified System Administrator (RHCSA).

    • Microsoft
      Certified: MCSE.

    5. Soft Skills:

    • Strong
      analytical and problem-solving abilities.

    • Excellent
      communication and documentation skills.

    • Ability
      to manage multiple tasks and priorities in a dynamic environment.

    • Team-oriented
      with a collaborative mindset.



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