How to get hired
Most sysadmins in India pick a lane early: Linux (often called "Unix/Linux admin"), Windows (often called "Wintel" in services firms), or virtualisation and storage. Job posts are written by lane, so your CV and certification should be too.
Getting the first admin role
- Promotion from the service desk. The most common route. L1 support engineers who learn Active Directory, Group Policy and basic server tasks get moved to L2 Windows admin. Tell your lead you want server work, and volunteer for patching weekends.
- Fresher hiring in infrastructure services. Large IT services and managed-services firms hire graduates into infrastructure batches and train them on Windows, Linux or VMware before placing them on client accounts.
- Small companies and hosting firms. Hosting providers, data centres and mid-size companies hire junior admins who handle everything: servers, backups, email, firewall. Lower pay, but you touch every system.
The Linux lane
Learn Red Hat Enterprise Linux (or Rocky or Alma Linux, which are close). Employers expect users and permissions, systemd services, LVM and filesystems, networking, SELinux basics, package management, cron, log reading, and shell scripting.
The certification employers name most is RHCSA (exam EX200). It is fully hands-on: you get live systems and tasks, and you are scored on whether the systems end up correctly configured, so memorising answers doesn't work. The current exam is based on RHEL 10. RHCE follows, focused on Ansible automation. The Linux Foundation's LFCS is a vendor-neutral alternative.
The Windows lane
Active Directory (users, groups, OUs, FSMO roles, replication), Group Policy, DNS and DHCP on Windows Server, file servers and permissions, patching with WSUS, SCCM or Intune, and more and more Microsoft Entra ID and Microsoft 365 administration. Microsoft's Windows Server Hybrid Administrator Associate (AZ-800 and AZ-801) and Azure Administrator Associate (AZ-104) are the certificates that match, and Microsoft renews them free each year through an online assessment.
Virtualisation, backup and storage
VMware vSphere skills still appear in many posts, alongside Hyper-V and backup tools. Ask employers which platform they run before paying for vendor training; licensing changes have pushed some companies to move platforms.
What interviews ask
- Linux: "The server says disk full but du shows space free." (Deleted files still held open by a process.) The boot process, how to extend an LVM volume, how to find what is using port 8080.
- Windows: "Group Policy is not applying to one OU", "A user can't log in, others can", how DNS and AD depend on each other, how you'd seize a FSMO role.
- Patching and change: how you patch a hundred servers safely, what a change request needs, how you roll back.
- Backup: the difference between backup and replication, and how you know your backup actually restores.
- Scripting: a Bash or PowerShell script to clean old logs or report disk usage across servers.
Lab
Build a home lab on your laptop with VirtualBox or Hyper-V: two Linux VMs, a Windows Server domain controller and a client. Join the client to the domain, push a Group Policy, set up a file share, script a backup. Interviewers can tell when you've done this yourself.
First titles
System Administrator L1, Junior Linux Administrator, Windows Administrator, Wintel Engineer, System Engineer, Infrastructure Engineer, Server Support Engineer.
Weekends, patches and pagers
Admin work happens when users are away: patch windows on weekends and nights, quarterly DR drills, and late calls when a server dies. Managed-services accounts usually run rotational shifts with on-call. In return, the job is less target-driven than development and you learn how every piece of a company's IT fits together.
The ladder runs L1, L2, L3 or SME, then Infrastructure Lead or Architect. Pay jumps when you add automation (Ansible, PowerShell), cloud (Azure or AWS administration) or move into DevOps; see our cloud and DevOps guide for that step.