Senior System Administrator

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, automates processes, and collaborate with teams to enhance system efficiency. Strong expertise in Windows administration, virtualization, and IT security is essential.

Responsibilities 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. 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.). Project & Risk Management Develop and implement project plans, risk assessments, and contingency plans. Assist with hardware, firewall, and software vendor evaluation and negotiations. Support & Maintenance Provide after-hours support for infrastructure emergencies and occasional weekend maintenance. Maintain inventory and asset configuration documentation. 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.

About: CoreStack provides a NextGen Cloud Governance platform that empowers enterprises to increase top-line revenues and gain a competitive edge through AI-powered real-time cloud governance on autopilot.

CoreStack is successfully deployed with companies across multiple industries such as Healthcare, Financial Services, Retail, Education, Technology, and Government. CoreStack has a stellar leadership team, creative investors, and backed by industry-leading advisors. Gartner recognized CoreStack in the 2020 Cloud Computing Platforms Magic Quadrant. CoreStack is also a recent recipient of the 2021 Gold Stevie American Business Awards in the Cloud Infrastructure category and 2021 Gold Globee Winner of the Most Innovative Company of the Year in IT Cloud/SaaS, Tech Ascension Award 2022, CoreStack Wins DataCloud Global Award 2022 and 19th Annual 2023 Silver Globee Winner® Cybersecurity Awards.