Kiran Kumar K
IT Infrastructure & Security Administrator
Bangalore
Summary
Experienced IT Executive, System Administrator, and Microsoft Security Professional with 7+ years of expertise managing enterprise IT infrastructure and cloud environments for 2,000+ users, specializing in Microsoft 365 administration (Exchange Online, SharePoint Online, Teams, OneDrive) and identity management using Active Directory and Microsoft Entra ID, with strong capabilities in user provisioning, SSO, and license management; skilled in endpoint protection and cloud security operations using advanced tools like Microsoft Defender for Endpoint, Microsoft Defender for Cloud, and Azure Firewall, along with hands-on experience in vulnerability management, real-time threat monitoring, and incident response; proficient in network security including firewall administration (FortiGate, SonicWall, Sophos), VPN configuration, Zscaler, LAN/WAN/Wi-Fi monitoring, and MDM solutions such as Microsoft Intune and Samsung Knox; experienced in handling P1/P2 incidents, root cause analysis, and collaborating with Microsoft and vendors, while ensuring compliance, optimizing security posture, and maintaining highly available, secure, and resilient IT environments aligned with business and regulatory requirements.
Overview
12
12
years of professional experience
2
2
Certifications
Work History
IT Executive and System Administrator
Global Green Company Ltd
04.2023 - Current
- Manage Azure AD (Entra ID) users, groups, licenses, SSO issues, and Conditional Access policies.
- Managed Microsoft Defender for Endpoint security portal, analyzing alerts, device timelines, and threat analytics to identify suspicious activities.
- Investigated Attack Surface Reduction (ASR) alerts in Microsoft Defender for Endpoint to identify suspicious script execution, credential theft attempts, and malicious Office macro activities.
- Monitored and investigated security alerts from Microsoft Defender for Cloud and Microsoft Entra ID, analyzing suspicious activities, risky sign-ins, and cloud security recommendations to ensure secure Azure environments.
- Utilized Microsoft Defender Threat and Vulnerability Management (TVM) to identify security weaknesses and coordinate remediation with infrastructure teams.
- Managed endpoint security using Microsoft Defender for Endpoint, Trellix ePO, SCCM, and Azure, ensuring real-time threat detection and remediation.
- Monitored and responded to security alerts across Defender for Cloud, Azure AD, and Sapphire; triaged Sev 1–Sev 4 incidents in collaboration with the SOC and cloud teams.
- Provide advanced support for Microsoft Teams (meetings, calling issues, policies, and app access).
- Perform Active Directory administration: user lifecycle (joiner, mover, leaver), GPOs, and access provisioning.
- Monitor enterprise infrastructure using Zabbix NMS for network devices, servers, IIS services, and public IPs.
- Review alerts, triggers, and notifications; take proactive actions to prevent outages.
- Manage SNMP monitoring for routers, switches, firewalls, and critical network components.
- Configure and maintain firewalls (FortiGate, SonicWall, Sophos), and monitor network security.
- Design, manage, and troubleshoot VPN connectivity for remote users, and site-to-site connections.
- Configure and deploy laptops and desktops for new joiners; install required software, and security tools.
- Integrate monitoring tools with ticketing systems, and automate incident creation.
- Generate daily, weekly, and monthly performance and availability reports for management.
- Collaborated cross-functionally with Microsoft, Trellix, and internal teams to maintain endpoint compliance and reduce enterprise-wide vulnerabilities.
Network Engineer - Infrastructure, Organizational IT
Atria Convergence Technologies (ACT)
07.2021 - 04.2023
- Provided VPN and technical support for 3,500+ users, ensuring secure and reliable connectivity.
- Managed helpdesk operations via FAVEO for timely issue resolution.
- Set up laptops and software for new employees to streamline onboarding.
- Enforced network security policies and internet access controls for 3,000+ users.
- Deployed and maintained Wi-Fi infrastructure with 70+ APs (Huawei, Cambium, Ruckus).
- Performed LAN/WAN/VPN audits and server administration via NMS portals.
- Handled biometric access systems and endpoint protection using Kaspersky Admin Console.
- Configured SonicWALL firewalls, VPN tunnels, and 2FA for secure data center connectivity.
- Supported 5,500+ mobile devices via Samsung Knox (MDM, OS updates, geolocation).
- Developed and maintained IT policies and documentation to ensure compliance.
Network Engineer
Randstad (ACT Fibernet)
10.2020 - 06.2021
- Provided VPN and technical support for 3,500+ users, ensuring secure and reliable connectivity.
- Managed helpdesk operations via FAVEO for timely issue resolution.
- Set up laptops and software for new employees to streamline onboarding.
Technician
Roto Power Project LTD (3M INDIA LTD)
06.2016 - 07.2019
- Responsible for the efficient operation of maintenance department.
- Ensure all records are maintained properly from maintenance team daily and recording the same in maintenance system and forwarding it to higher authority.
- Hand's on experience on CCTV Installation and Network configuration.
- Coordinated to vendors on company project works.
- Coordinated to IT Team and attended LAN Issues on HUB room and server room.
Technician
ISS Facility Services (3M India PVT LTD)
07.2014 - 05.2016
- Inspect, maintain, and troubleshoot electrical systems, wiring, switchboards, and lighting.
- Monitor and maintain UPS, batteries, and power distribution units.
- Attend electrical breakdowns and ensure quick restoration of power.
- Coordinate with vendors for electrical repairs and AMC activities.
- Diagnose and resolve EPABX call issues, line faults, and handset problems.
- Coordinate with service providers for telephone line issues and EPABX AMC support.
Education
B.E - EEE
DR. Sri Sri Sri ShivaKumar Mahaswamy Collage of Engineering
Karanataka08.2020
DIPLOMA - undefined
RES Polytechnic
Bangalore01.2012
SSLC - undefined
ST. Mary's English High School
Bangalore04.2009
Skills
- Security Platforms & Tools
- Scripting & Automation
- PowerShell
- Support & Remote Tools
Accomplishments
- Star performer award, 2021-22, ACT
- Award for VPN issue resolved
- Award for Switch replaced on All branches in Bangalore and resolved network issues
- Award for MDM (On time mobile configuration and issuance to end user)
- Award for taking ownership of service managing
- CEO appreciation cash prize award for Handling all the IT infra during covid-19
Certification
SOC Analyst Training, 2022-04-01
Personal Information
- Passport Number: P9035101
- Father's Name: Krishnamurthy DK
- Date of Birth: 1994-05-15
- Gender: Male
- Nationality: Indian
- Marital Status: Married
- ID Type: Passport
- ID Number: P9035101
Devices And Platforms
Microsoft Azure, Office 365, SonicWALL 4600, Fortigate 100D, Cambium, Ruckus, Omada controller, Samsung Knox, FAVEO Helpdesk, True
Timeline
IT Executive and System Administrator
Global Green Company Ltd
04.2023 - Current
Network Engineer - Infrastructure, Organizational IT
Atria Convergence Technologies (ACT)
07.2021 - 04.2023
Network Engineer
Randstad (ACT Fibernet)
10.2020 - 06.2021
Technician
Roto Power Project LTD (3M INDIA LTD)
06.2016 - 07.2019
Technician
ISS Facility Services (3M India PVT LTD)
07.2014 - 05.2016
DIPLOMA - undefined
RES Polytechnic
SSLC - undefined
ST. Mary's English High School
B.E - EEE
DR. Sri Sri Sri ShivaKumar Mahaswamy Collage of Engineering