Are you an experienced Linux System Administrator looking to work in a challenging and dynamic Data Center environment? Here’s your opportunity to join one of North India’s most established IT system integration companies — SST Infotech India Pvt. Ltd.
SST Infotech is actively hiring for the position of System Administrator – Linux L2 (Data Center) at its Noida office. This full-time, permanent role offers exposure to cutting-edge hosting technologies, virtualization, and cloud infrastructure management. If you have hands-on experience with Linux systems, VMware, cPanel, DNS, and email servers, this position could be the perfect next step in your IT career.
About SST Infotech India Pvt. Ltd.
Founded over 16 years ago, SST Infotech (I) Pvt. Ltd. has become a trusted tier-2 system integrator in the Delhi NCR region. Headquartered in Noida with a registered office in Gurgaon, the company specializes in IT system integration, office automation, cloud hosting, and data center solutions.
SST Infotech serves a mix of domestic and international clients, offering secure cloud platforms and managed hosting services. Its in-house data center and hosting division — DC10G — provides businesses with robust, scalable, and secure infrastructure for critical applications.
Job Overview
| Category | Details |
|---|---|
| Company Name | SST Infotech India Pvt. Ltd. |
| Job Role | System Administrator – Linux L2 (Data Center) |
| Department | Technical |
| Reporting To | Manager – Technical |
| Experience Required | 2–4 years |
| Job Location | Noida |
| Employment Type | Full-Time, Permanent |
| Industry | IT Services & Consulting / Data Center Operations |
| Education | B.Tech / B.E. or Technical Degree |
| Preferred Candidates | Male, residing in or around Noida |
| Official Websites | www.sstinfotech.com, www.dc10g.com |
Job Purpose
As a System Administrator (Linux L2), you’ll play a critical role in managing the technical operations and support for SST Infotech’s data center customers. You’ll be responsible for maintaining uptime, ensuring system security, and resolving escalated server and application issues efficiently.
This role requires both technical depth and customer focus — ensuring 100% client satisfaction through proactive support, timely troubleshooting, and system optimization.
Key Responsibilities
The Linux L2 System Administrator will manage core technical operations in a multi-tenant data center and cloud hosting environment. Below are the primary responsibilities:
System Management
- Install, configure, and maintain Linux (CentOS, Ubuntu, AlmaLinux) and Windows Server systems.
- Perform regular OS updates, kernel patches, and security hardening.
- Manage VMware ESXi/vCenter, including VM creation, snapshots, and resource allocation.
- Administer cPanel/WHM, Plesk, Apache, Nginx, IIS, and other hosting control panels.
- Configure SSL/TLS certificates, reverse proxies, redirects, and load balancers.
Hosting & DNS Administration
- Host and maintain multiple client websites and applications, ensuring uptime and performance.
- Manage DNS records (A, MX, CNAME, TXT, PTR, SPF, DKIM, DMARC) via BIND or control panels.
- Troubleshoot web, DNS, and email-related issues effectively.
Database & Mail Management
- Administer MySQL, MariaDB, and Microsoft SQL Server databases — including backups, replication, and query optimization.
- Configure and manage Zimbra Mail Server and Proxmox Mail Gateway for spam filtering and email delivery.
- Resolve SMTP, IMAP, and POP3 issues while maintaining email security and compliance.
Automation & Scripting
- Create Bash, Python, or PowerShell scripts for automation of routine tasks like backup, monitoring, and maintenance.
- Implement system backup solutions using rsync, JetBackup, R1Soft, or Acronis.
- Use monitoring tools like Zabbix, Nagios, Grafana, or Netdata to ensure infrastructure health.
Security & Compliance
- Conduct system hardening, log analysis, and vulnerability scans.
- Maintain security compliance and ensure servers meet company standards.
- Manage user permissions, SSH keys, and file system quotas.
- Follow IT policies for backup, change management, and incident reporting.
Support & Documentation
- Provide L2/L3 support for server, hosting, DNS, and database issues.
- Handle support tickets, maintain documentation, and perform root cause analysis (RCA).
- Collaborate with internal teams for complex issue resolution.
- Monitor daily backups, SSL renewals, DNS synchronization, and server resource usage.
Optimization & Planning
- Participate in capacity planning, performance tuning, and service optimization.
- Assist in migrations, deployments, and version upgrades of hosted applications.
- Ensure high availability (HA) and redundancy for critical systems.
- Support after-hours calls as part of on-call rotation when required.
Technical Skills Required
To succeed in this role, you should have hands-on expertise across multiple server and networking technologies:
- Linux Administration: CentOS, Ubuntu, AlmaLinux
- Virtualization: VMware ESXi / vCenter, Proxmox
- Control Panels: cPanel/WHM, Plesk
- Web Servers: Apache, Nginx, IIS
- Monitoring Tools: Zabbix, Nagios, Grafana, Netdata
- Databases: MySQL, MariaDB, MSSQL
- Email Systems: Zimbra, Proxmox Mail Gateway
- Networking: DNS, SMTP, IMAP, POP3, NAT, Routing, Firewalls
- Automation: Bash, Python, PowerShell scripting
- Backup Tools: rsync, JetBackup, Acronis, R1Soft
- Security: SSL configuration, system hardening, log analysis
Preferred Skills:
Proxmox, SSL management, database replication, Zimbra Mail Administration, Grafana dashboards, DNS troubleshooting, and Linux server performance tuning.
Soft Skills & Personality Traits
Beyond technical skills, SST Infotech values professionals who are dependable, communicative, and proactive:
- Strong communication and presentation abilities.
- Ability to lead or assist a team in complex support environments.
- Time management and ability to work under pressure.
- Self-motivated, detail-oriented, and customer-focused.
- Willingness to work 24×7 shifts when needed.
- Fluent in English; professional attitude and problem-solving mindset.
Experience & Qualifications
- Education: Bachelor’s Degree (B.Tech / B.E.) or equivalent technical degree.
- Experience: Minimum 2–4 years in Linux System Administration or Data Center operations.
- Proven record in technical support, server management, or hosting environments preferred.
Role & Career Growth
At SST Infotech, you’ll not only manage servers — you’ll contribute to innovation in data center operations. As part of the Technical Department, you’ll collaborate closely with other teams to enhance hosting efficiency, system reliability, and customer satisfaction.
Your contributions will directly influence service delivery quality, uptime, and the company’s reputation for reliability.
Outstanding performers can look forward to:
- Team leadership opportunities.
- Exposure to cloud hosting and virtualization projects.
- Participation in international client projects.
- Continuous technical learning and certifications.
