Lead System Administration

CoreStack; Chennai District; On-site; INR 1,200,000 - 1,800,000; Full time

Benefits offered by this job

Competitive compensation package

Performance bonus

Stock options

Generous Paid Time Off

Collaborative work culture

Job summary

CoreStack in Chennai is seeking a Lead System Administrator to manage and maintain IT infrastructure, ensuring optimal performance and security. Responsibilities include configuring systems and networks, implementing security protocols, and providing technical support.

The ideal candidate will have strong expertise in Windows administration, 6+ years in System Administration, and comprehensive knowledge of Azure and M365 security features. Join a fast-growing company with a competitive compensation package.

Qualifications

• 6+ years of experience in System Administration.
• Strong understanding of LAN/WAN networking, VLANs, and IP subnetting.
• Hands-on expertise in M365 security features.

Responsibilities

• Design and configure internal-facing servers and networks.
• Monitor M365 security alerts and manage compliance standards.
• Provide after-hours support for infrastructure emergencies.

Skills

System Administration

LAN/WAN networking

Azure & Local Active Directory

Patch and vulnerability management

M365 security features

Analytical and problem-solving

Communication skills

Collaboration

Security knowledge

Job description

Job Title: Lead System Administrator

Location: Chennai, Tamil Nadu
Employment Type: Full-Time

Job Summary

You will be responsible for managing and maintaining the organization’s IT infrastructure, ensuring optimal performance, security, and reliability. This role involves configuring and troubleshooting servers, networks, and enterprise applications, as well as implementing security protocols and system upgrades. You will also provide technical support, automate processes, and collaborate with teams to enhance system efficiency. Strong expertise in Windows administration, virtualization, and IT security is essential.

Responsibilities

1. Infrastructure Management
   • Design, install, and configure internal-facing servers, virtual environments, networks, and firewalls.
   • Proactively maintain and manage server, network, and firewall systems.
   • Troubleshoot LAN/WAN and backbone infrastructure issues.
2. Security & Compliance
   • Monitor M365 security alerts, logs, and reports to detect and respond to security incidents.
   • Ensure IT infrastructure aligns with ISO 27001 and SOC 2 Type 2 security and compliance standards.
   • Manage patching and vulnerability remediation for end‑user machines, ensuring security updates are tested and deployed efficiently.
   • Conduct security assessments and audits of M365 configurations and permissions.
   • Implement security controls in M365, Azure AD, Microsoft Defender, and Azure Information Protection.
   • Work with security tools (SIEM, IDS/IPS, DLP, endpoint security solutions like Falcon, Endpoint Protector, etc.).
3. Project & Risk Management
   • Develop and implement project plans, risk assessments, and contingency plans.
   • Assist with hardware, firewall, and software vendor evaluation and negotiations.
4. Support & Maintenance
   • Provide after‑hours support for infrastructure emergencies and occasional weekend maintenance.
   • Maintain inventory and asset configuration documentation.
5. Collaboration & Training
   • Mentor and cross‑train team members on existing and new technologies.
   • Interact with customers and staff at a technical level as required.
   • Develop and implement security awareness training programs for end‑users.

Required Skills

• 6+ years of experience in System Administration
• Strong understanding of LAN/WAN networking, VLANs, IP subnetting, and 802.1Q trunks.
• Experience with Azure & Local Active Directory user and group administration.
• Experience in patch and vulnerability management, including OS updates, application patching, and security hardening.
• Knowledge of ISO 27001 and SOC 2 Type 2 compliance, including security controls, risk assessments, and audit requirements.
• Hands‑on expertise in M365 security features and tools.
• Strong analytical and problem‑solving abilities for assessing security issues.
• Excellent communication and collaboration skills.
• Ability to work independently and manage tasks in a fast‑paced environment.

This role requires a mix of technical expertise, security knowledge, problem‑solving skills, and teamwork to ensure a secure and efficient IT infrastructure.

Why Join CoreStack?

• Be part of a fast‑growing, innovative company and the leader in cloud governance. Work with a talented and passionate team of professionals.
• High‑impact role with significant influence over company growth trajectory and expanding market presence.
• A mission‑driven culture that values and rewards collaboration and innovation.
• Competitive compensation package, including performance bonus and stock options.
• Generous Paid Time Off and Holidays.