Hire the Best VMware Administrators in Colombo, LK

I am an enthusiastic and high-achieving IT professional with a Bachelor of Computer Science, currently completing my Master of Networking Systems and Administration. I have exceptional technical and analytical skills, with over 5 years’ experience in Technical Support Level 3, database management, information system support and security, and network and server support. In my previous roles I have performed installation and configuration of software and hardware, Configuring and troubleshooting Microsoft Exchange 2003, 2007, 2010, 2013 and O365, router and switch administration, and worked extensively with Windows and Active Directory. I have helped clients both on site and remotely, and have always demonstrated a keen ability to problem-solve and troubleshoot.

Senior System Administrator specializing in Microsoft 365, Active Directory, AWS, and enterprise infrastructure reliability. For the past 4 years, I've been the sole infrastructure consultant supporting production systems for Revalize LLC (USA), managing customer-facing enterprise environments where downtime directly impacts revenue. Alongside this long-term enterprise infrastructure ownership, I've delivered migration and remediation projects for 20+ organizations across SaaS, manufacturing, and professional services. Core expertise: - Microsoft 365 migrations & hybrid Exchange - Active Directory & Windows Server administration - AWS cost optimization & infrastructure reliability - PowerShell automation & process optimization - Disaster recovery & business continuity Clients typically bring me in when: → Migration projects have stalled or lack expertise → Active Directory or mail infrastructure becomes unstable → Production environments lack documentation or monitoring → Infrastructure costs are growing unexpectedly → Internal teams cannot safely troubleshoot production systems Recent project outcomes: → Migrated 500+ users from Exchange 2016 to Microsoft 365 with zero email downtime during 72-hour cutover → Reduced AWS infrastructure costs by 30% ($47K annually) through EC2 rightsizing and Reserved Instance strategy → Restored multi-site Active Directory replication affecting 450+ users across 3 locations within 8 hours → Recovered a non-booting domain controller with SYSVOL/DFSR failures in 6 hours, preventing an authentication outage → Automated user onboarding workflows, reducing provisioning time from 2 hours to 10 minutes Microsoft 365 & Exchange - Exchange Online & hybrid Exchange migrations - Tenant-to-tenant migrations - Hybrid identity (Entra ID / Azure AD) - SharePoint & Teams administration - SPF / DKIM / DMARC configuration - Intune device management & endpoint compliance policies - MFA enforcement, Conditional Access, and Microsoft 365 governance - Exchange sync troubleshooting & mailbox recovery Active Directory & Windows Infrastructure - Domain controller recovery & SYSVOL/DFSR replication repair - Multi-site domain controller deployments - Group Policy management & troubleshooting - FSMO role management & transfer - Hybrid AD environments (on-premises + Entra ID) - Windows Server 2012 R2 through 2022 administration AWS & Cloud Infrastructure - Cost optimization & infrastructure analysis (40-60% average reduction) - EC2 rightsizing & Reserved Instance strategy - RDS performance tuning & elastic pool optimization - CloudWatch monitoring & proactive alerting - VPC design & auto-scaling configuration Infrastructure Reliability & Operations - Disaster recovery planning & backup validation - Production change management & operational handoff - 24/7 emergency support for production infrastructure incidents - Flexible timezone coverage (US, UK, Australian business hours) Additional experience includes VMware vSphere, Hyper-V, Fortinet/pfSense networking, Veeam/Commvault backup solutions, and enterprise ITSM platforms including ServiceNow and JIRA. Certifications: → AWS Certified Solutions Architect – Associate → Microsoft 365 Certified: Fundamentals (2024) → MCSA: Windows Server 2016 → Fortinet NSE 1 & NSE 2 Network Security Clients value reliability, communication, and operational accountability just as much as technical execution. If you need an experienced infrastructure engineer to stabilize, migrate, optimize, or maintain production systems, send me: → Current infrastructure overview (platform, user count, pain points) → Project goals and timeline → Any existing documentation or error logs I respond within 24 hours with a project assessment and approach. Available for scheduled migrations, infrastructure remediation, and urgent production recovery engagements.

As a seasoned IT professional with over a decade of experience, I specialize in managing and supporting Microsoft 365, Azure environments, server infrastructures, and user end support. My strengths lie in my ability to design, implement, and maintain complex IT systems, ensuring seamless operations and business continuity. I am proficient in PowerShell scripting, Active Directory, Group Policy, Intune, SCCM, and various backup solutions like Veeam and StorageCraft. I've successfully handled numerous projects involving server migrations, cloud deployments, and user onboarding/offboarding processes, making sure to align technology with business needs. My educational background includes a Bachelor of Science in Computer Networks, supplemented by industry-recognized certifications in Azure, Microsoft, and ITIL®. I am committed to delivering high-quality solutions and exceptional support, ensuring that every client's technical needs are met with precision and efficiency. Let’s work together to bring your IT projects to life!

Microsoft 365 Architect | Exchange Online | Intune | Entra ID | Defender | Purview Helping businesses securely migrate, manage, and optimize Microsoft 365 environments. Hello, I'm Kesavan, a Microsoft Certified Microsoft 365 and Security Specialist with experience helping organizations modernize their IT environments using Microsoft technologies. I work with businesses of all sizes, from small organizations to enterprise environments, delivering secure, reliable, and scalable Microsoft 365 solutions. My focus is helping clients improve security, simplify administration, strengthen compliance, and maximize the value of their Microsoft 365 investment. Services I Provide Microsoft 365 Deployment, Administration & Migrations • Microsoft 365 tenant setup, configuration, and management • Exchange Online, Microsoft Teams, SharePoint Online, and OneDrive administration • Migrations from Exchange Server, Google Workspace, GoDaddy, Zoho, and other platforms • User onboarding, licensing, and Microsoft 365 optimization Microsoft Intune & Endpoint Management • Microsoft Intune deployment and configuration • Windows Autopilot implementation • Device compliance and security policies • Mobile Device Management (MDM) and Mobile Application Management (MAM) • Application deployment and endpoint security management Identity & Access Management • Microsoft Entra ID (Azure AD) • Multi-Factor Authentication (MFA) • Conditional Access Policies • Privileged Identity Management (PIM) • Hybrid Identity and Azure AD Connect Security & Compliance • Microsoft Defender for Endpoint, Office 365, and Defender XDR • Microsoft Purview Information Protection and Data Loss Prevention (DLP) • Sensitivity Labels, Retention Policies, and Compliance Solutions • Security Assessments and Microsoft Secure Score Improvement • Security hardening and best-practice implementation Technical Support & Consulting • Microsoft 365 troubleshooting and administration • Exchange Online mail flow and migration support • Teams, SharePoint, and OneDrive support • Security and compliance consulting • Ongoing Microsoft 365 managed services Why Clients Work With Me ✔ Microsoft Certified Professional with expertise across Microsoft 365, Security, Identity, and Compliance ✔ Proven experience delivering migration, security, and endpoint management projects ✔ Strong focus on security, reliability, and business outcomes ✔ Clear communication, responsive support, and professional project delivery ✔ 100% Job Success Score with successful project delivery across multiple industries Certifications • MS-102 – Microsoft 365 Certified: Administrator Expert • SC-300 – Microsoft Certified: Identity and Access Administrator Associate • SC-400 – Microsoft Certified: Information Protection Administrator Associate • SC-401 – Microsoft Certified: Information Security Administrator Associate • MS-700 – Microsoft Teams Administrator Associate • MS-900 – Microsoft 365 Certified: Fundamentals Whether you need to migrate to Microsoft 365, strengthen security, deploy Intune, implement compliance controls, or optimize your existing environment, I can help you achieve a secure and efficient solution that supports your business goals. Let's discuss your requirements and build the right Microsoft 365 solution for your organization.

Cloud and Systems Engineer with over 15 years of experience IT industry and blend expertise within Microsoft 365, Azure Cloud Solutions, LAN, WAN, Systems such as Windows and Linux. Code Version Management. Kubernetes orchestration and Docker container management experience. I have worked for various international companies, including software development companies, educational institutes, banking, and stock exchanges. On-premises, public cloud, private cloud, and hybrid design and operations expertise. Large AWS, Azure, and Google Cloud deployments and migrations Technology savvy, more into open-source and networking solutions. Certifications: Microsoft Certified Azure Solutions Architect Expert Microsoft Certified Azure Administrator ITIL version 3 Cisco Certified Network Associate Cisco Certified Network Professional - Routing Microsoft Certified Professional I have strong skills in the following areas: - Design and deploy solutions in cloud platforms (Azure, AWS) - Office 365 Administration - Providing Support for the global level for M365 - Administrating Windows Client OS - Windows 10/11 - Windows Server 2008 - 2022 Configurations - Pfsense Firewall, IPSec VPN Configuration - Network Infrastructure Design, Deployment, Ongoing Administration / Maintenance, Migration, Optimization/Tuning - System Administration in operating systems such as Centos, Ubuntu, and Windows - Firewall configuration and Administration - MySQL and MS SQL Database Administration - Virtual Server infrastructure (HyperV, VM Ware, etc.) - Network and Server Monitoring - CPanel and Web Hosting panels Installation & management - Windows RDS Solution Provider, RDS Licensing, RDS Wep Apps Solution Provider

✅ Self-motivated Linux Server Administrator and Network Administrator with more than 10+ years of working experience with different Cloud providers. Ready to take up any challenge. ✅ Expert on, 💎 AWS, Google Cloud, Azure, DigitalOcean or onPrem server management. 💎 Setting up and manage different environment Web Server, Database Server, Mail Server, Load Balancer, Optimization and Security. 💎 Designing Web Server - Building web server based on Apache, Nginx, Nginx/php-fpm, Varnish as backend with high performance tuning and major security issues. 💎 Learning Management Systems – Moodle (Expert) including mobile app (Android & Apple IoS) customization 💎 Document Management Systems – Nextcloud (Expert) and onlyoffice 💎 Security - Malware removal, server hardening using firewall rules, restriction in server login, Web security, Security auditing, fail2ban, mod_security for web attack, mod_evasive DDOS attack prevention, Firewall setup CSF, UFW and iptables. Prevention from mail attack, SSL Certificate installation. 💎 Database Server - Building MySQL, Mariadb database server with high performance , troubleshoot database server problems, tweaking MySQL variables for performance. 💎 Scripting - Bash Scripting for monitoring servers, auto backup. 💎 Mail server- Building mail server for sending and receiving mails postfix, sendmail, setup mail client Roundcube, SquirrelMail, Rainloop, Horde. Dovecot for POP & IMAP, troubleshoot mail issues, configure mail for delivery in inbox. 💎 Monitoring services and servers – LibreNMS, Nagios monitoring tools, tweaking as per requirement, monitor servers using bash script, Tripwire. 💎 Amazon - AWS EC2 server setup, Security. 💎 Cloud Servers & Panel - Management of Ubuntu, Centos, Cpanel, CWP, WHM, Plesk, Webmin, Diretadmin, ISPConfig, JustHost, Godaddy, Linode, Rackspace, Amazon. 💎 Migration - Server migration, website migration, database server migration, mail server migration. 💎 VOIP Solutions - Asterix based PBX (Eg: VitalPBX) 💎 Video conferencing - Zoom (including on premise setup), Jitsi, BigBlueButton 💎 Virtualization Technology - VMware VSphere Esxi, KVM, Xen Server 💎 Networking (CCNP R&S and SP certified) - Hands on experience with CISCO, HP, Extreme, Juniper devices including wireless. 💎 Firewall configurations - Hands on experience with Palo Alto, Check point and Cisco ASA firepower. ✅ Please do not hesitate to contact me to discuss your project in detail and determine how my skills will positively contribute to your team.