Hire the Best vtiger Administration Specialists
in Bangladesh

With 19+ years of hands-on experience, I help businesses reduce infrastructure risk and improve system reliability by designing, securing, and maintaining production-grade Linux environments, blockchain and crypto exchange systems, and automated trading solutions. I also specialize in building and supporting scalable SMS and VoIP infrastructure using Telnyx, Twilio, and VoIP.ms, engineered for stability, performance, and long-term operational reliability. Upwork Client's feedback: "A complete expert in Linux. Very collaborative freelancer." "Honest and reliable freelancer. A joy to work with." "Good and hardworking worker. Very honest as well." "Highly skilled Linux engineer, with a deep understanding of the ins and out of drivers and the essence of the OS" With extensive hands-on experience delivering mission-critical infrastructure, I focus on stable systems, fast troubleshooting, and enterprise-grade execution. Let’s discuss your requirements on upwork and define the right technical solution for your project.

I am a Linux & Windows System Administrator and DevOps Engineer with over 8 years of experience, specializing in server management, automation, and cloud infrastructure. I help businesses maintain secure, high-performance, and scalable IT environments. My expertise includes: ✔ Linux & Windows Server Administration: Linux: Debian, CentOS, Ubuntu, RHEL – maintenance, troubleshooting, and optimization. Windows Server: Active Directory, Group Policy, IIS, Remote Desktop Services, DNS, DHCP, and PowerShell automation. ✔ DevOps & Automation: CI/CD pipelines, Ansible, Docker, Kubernetes, Terraform, Jenkins, and GitLab CI/CD. ✔ Cloud & Virtualization: AWS, Google Cloud, DigitalOcean, Azure, VMware, and KVM-based solutions. ✔ Web Servers & Performance Tuning: Apache, Nginx (with PHP-FPM/FastCGI), MySQL, Varnish, Memcached. ✔ Odoo ERP: Deployment, configuration, maintenance, and troubleshooting. ✔ Networking & Security: iptables, rsync, BIND, OpenVPN, Windows Firewall, network troubleshooting. ✔ Email Servers & Deliverability: Exim, Dovecot, Postfix, Microsoft Exchange, MailEnable – setup and troubleshooting. ✔ Backup & Migration: Secure and seamless server, database, and email migration. ✔ Control Panels: WHM/cPanel, Virtualmin, Plesk – installation and management. ✔ Monitoring & Logging: Zabbix, Munin, Nagios, ELK Stack (Elasticsearch, Logstash, Kibana), Windows Event Viewer. ✔ Lost Data Recovery: Helping recover critical data from both Linux & Windows environments. I am committed to providing secure, efficient, and scalable solutions for businesses. If you need assistance with server management, DevOps automation, Windows/Linux support, or performance optimization, feel free to reach out!

✨ Cold email / Mail server: Rapid, Robust high volume - ✅ Full DNS: MX, DKIM, SPF & DMARC with MailTester verification - ✅ All protocol: SMTP, IMAP & POP with SSL/TLS security - ✅ Your domains, unlimited email accounts - ✅ Deliverability optimization with 10/10 score - ✅ Cold mail infrastructure (high-deliverability outreach systems) - ✅ Migration from shared hosting to dedicated mail infrastructure ✨ Private Cloud: Office 365 / Google Workspace alternative: - ✅ Online document management - ✅ Online drive with collaboration - ✅ Instant messaging like Slack - ✅ Meeting: Video, audio, whiteboard & chat - ✅ Enterprise grade email service - ✅ HTTPS secured access ✨ Your own IT Infrastructure - ✅ Enterprise grade private server (Linux) & maintenance - ✅ Web Servers (Apache, NginX) with SSL security - ✅ Database (MySQL, MariaDB & PostgreSQL) - ✅ Control Panels: cPanel, Control WebPanel, CloudPanel, etc. - ✅ Providers: Hetzner, Brixly, Digital Ocean, SSD Nodes, AWS, Azure, etc. - ✅ DNS & Domain Management (CloudFlare, GoDaddy, NameCheap, etc.) ✨ Achievements - ⭐ 500+ Enterprise grade mail server deployment - ⭐ Infrastructure orchestration & security implementation - ⭐ Terabyte MySQL management with IoT real time data - ⭐ Remote IT support ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💼 WHAT MAKES WORKING WITH ME DIFFERENT ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🗣️ Communication Excellence: Clear & professional English communication. No language barriers. No misunderstandings. 🧠 Developer + Sysadmin Perspective: Very long PHP/MySQL web development background of 20+ years. Development needs to infrastructure, I understand both worlds. 🤝 Trust-Based Collaboration: I deliver results, not time sheets. 🌍 Proven International Track Record: Managing infrastructure for companies in USA, Sweden and Australia, with past engagements in Switzerland and Bahrain. I maintain US East hours by default but flexibly collaborate across all timezones. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 LET'S WORK TOGETHER ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 👉 If you need: • A complete private cloud solution to reduce SaaS costs • A robust, deliverable mail server that won't land in spam • Cold mail infrastructure for high-conversion outreach campaigns • Infrastructure that scales with your business • A long-term partner who treats your systems like their own ...then let's talk. I'm available for long-term engagements and prioritize building lasting client relationships. 📩 Send me a message with your project details; I typically respond within 0-4 hours.

I'm a DevOps and Linux System Engineer, and I'd want to introduce myself. I have extensive experience as a Software and System Architect, as well as an extensive understanding of Open Source Projects. I am mentioning a few experiences with different technologies and tools: Orchestration: Docker, Swarm Kubernetes Cloud Computing: AWS, GCP, Azure, DO, Linode... Virtualization: VMware, Hyper-V, ESXi, Proxmox, FreeNAS Linux Distro: RHEL based distros, Debian based distros, FreeBSD and alpine Web Server: Apache, Nginx, Caddy, Traefik, NodeJSHosting: CMS, SSL, Domain, Cpanel, WHMCS, Plesk, Vesta DB: MySQL/MariaDB, MongoDB, PostgreSQL, Radis, SQLite, Oracle Development: VueJS, NuxtJS, React, NextJS, Electron, Express, Shell Scripting Mail Server: Zimbra, iRedMail, MailCow, Spam mail issue resolving Migration/Deployment: WordPress, Ghost, Django, React, Vue, Express, Ruby on Rails, Laravel Open Source: Owncloud/NextCloud, Mattermost, Rocket.Chat, Jitsi, Bitwarden, Metabase, Botpress, Authentik.... any Open Source projects CI/CD: Gitlab, Github, Jenkins Network solution | Security | Each and every Linux issue resolving You can directly order some services: Jitsi Meet, Mattermost, Rocketchat, Matrix, Nextcloud, ownCloud, cPanel, Plesk, Vesta, Bitwarden, Metabase, Botpress, Gitlab, Zimbra, iRedMail, Mailcow, WordPress Ping me to discover new edge, together we can achieve more..!

I have 9+ years of experience in Linux/Windows Server/System Administration, System Security Analysis and hardening, Virtualization (VMware, Proxmox, Hyper-V) Management, Website, Cloud Server, Video Streaming Server, Database System performance optimization for speed, CDN, Email System, Anti-SPAM and DNS Administration. Skills: - Virtualization Platforms: VMware, Proxmox, OpenStack, OpenNebula, Xen, KVM, LXC, Docker - Cloud: AWS, DigitalOcean, Google Cloud, AliBaba Cloud, Microsoft Azure Cloud - Performance Optimization: Linux OS, Apache, Nginx, MySQL, MariaDB, Website, WordPress - Expertise in security solutions like Firewalls, Anti-Spam Solutions, VPN (OpenVPN, WireGuard, OpenConnect, WebSock), Security Gateways, IDS/IPS (Suricata, Snort, pfSense, OPNsense, Palo Alto, SOPHOS UTM). - Expert in Email Servers and Anti-Spam Gateways (Postfix, Exim, Barracuda, Zimbra, Proxmox Gateway, SOPHOS) - Disaster Recovery, DLP, Data Backup solutions. - Database Administration and tuneup for higher performance & query. - Knowledge in IP-PBX, VoIP, WebRTC, RTMP, Wowza - BigBlueButton & Scalelite Custom Video Conferencing, Video streaming solutions with LMS integration. - Expertise in WordPress, Website Performance/Security Optimization. - Hosting Control Panels: cPanel, VestaCP, DirectAdmin etc. - Knowledge of Cross-platform mobile app development using React-Native. - Desktop software development using Java and React-Native-Windows - Integrate any hardware with software using SDK (Java, PHP) I can adapt myself with new technology, products as per company needs. I can develop new products and drive excellent growth and positive revenue. I'm fluent/native in the English language. I'll deliver your project on time with quality and excellence.

⭐⭐⭐⭐⭐𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐄𝐱𝐩𝐞𝐫𝐭 𝐨𝐧 𝐒𝐞𝐫𝐯𝐞𝐫, 𝐒𝐭𝐨𝐫𝐚𝐠𝐞, 𝐕𝐢𝐫𝐭𝐮𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧, 𝐁𝐚𝐜𝐤𝐮𝐩 & 𝐃𝐢𝐬𝐚𝐬𝐭𝐞𝐫 𝐑𝐞𝐜𝐨𝐯𝐞𝐫𝐲, 𝐋𝐢𝐧𝐮𝐱, 𝐖𝐢𝐧𝐝𝐨𝐰𝐬, 𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬, 𝐂𝐈/𝐂𝐃, 𝐃𝐞𝐯𝐎𝐩𝐬, 𝐌𝐮𝐥𝐭𝐢-𝐂𝐥𝐨𝐮𝐝 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭 🏆𝟏𝟐+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 | 𝐈𝐓 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞, 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 & 𝐃𝐞𝐯𝐎𝐩𝐬 | 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭 I’m a 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝘆 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁 with over 12 years of hands-on experiences on IT infra design, deployment, implementation, configuration, migration, support services with below key skill include - 🏆 Enterprise Storage, Server, Backup & Recovery Architecture and Implementation 🏆 Dell EMC, HITACHI, NetApp, HPE, IBM, Pure, Huawei, Lenovo, Fujitsu, SAN/NAS Storage, Administration, Replication, Migration Technologies 🏆 Backup Recovery solution with Commvault, Veritas NetBackup, Backup Exec, Veeam, Acronis, EMC Networker, Data Domain, Avamar, IDPA 🏆 System and Data Migration with SAN Copy, vMotion, P2V, V2P, Rsync, RClone 🏆 Cisco MDS and Brocade SAN Fabric / FC Switch 🏆 Rack and Modular Chassis Server Implementation and Administration 🏆 Synology, QNAP, TrueNAS, Isilon NAS Storage & Open Source Platform deployment 🏆 Linux/Unix, Ubuntu, CentOS Install, Update, File System, LVM, ACL, SSL, Apache, Nginx Web Server Configuration 🏆 Windows Server Install, Active Directory Domain Contoller, DNS, RDS, DHCP, FTP, Web Server, IIS, File Server, Failover Cluster configuration 🏆 Microsoft Hyper-V Install, Replication, HA Cluster, Nutanix, Proxmox, VirtualBox virtualization setup 🏆 VMware ESXi, vCenter Install, Virtual Machine, vSAN Cluster, HA Cluster, vMotion, Workstation setup 🏆 Oracle, MySQL, SQL Database configuration & management 🏆 Azure, GCP, AWS, IBM, OCI, DigitalOcean, Public Cloud resource management, AutoScaling, Load Balancer, VPC, Platform migration, configuration 🏆 Docker, Kubernetes cluster seup, container management, deployement, Azure DevOps, GitHub Actions, GitLab CI, Jenkins, ArgoCD, CI/CD pipeline 🏆 Network Switch, Router, Firewall, Gateway, Access Point, Wireless device configuration with Cisco, Juniper, Fortinet, MikroTik, D-Link, TP-Link, HPE Networking, Aruba, Avaya, Ubiquity, UniFi, Dell Networking PowerSwitch, F5, VPN, Proxy, Packet Tracer Network Design and Configuration 🏆 Batch, PowerShell and Bash Scripting ✅ ＭＹ ＣＯＲＥ ＥＸＰＥＲＴＩＳＥ 💾 Server, Storage & SAN ✔ Dell EMC PowerMax, VMAX, Unity, PowerStore, VxRail, Isilon/PowerScale ✔ Hitachi VSP, HNAS, G-Series, USP, HUS ✔ NetApp AFF, FAS, ASA, EF Series, StorageGRID ✔ HPE 3PAR, Nimble, Primera, Alletra, StoreOnce, MSA ✔ IBM FlashSystem, SVC, DS Series ✔ Pure Storage, Huawei OceanStor/Dorado, Fujitsu, Lenovo, Oracle ZFS ✔ SAN/NAS Design, Storage Migration, Replication, Performance Optimization ✔ Cisco MDS & Brocade SAN Fabric Administration 🗃️Backup, Disaster Recovery & Data Protection ✔ Commvault Backup & Recovery ✔ Veeam Backup & Replication ✔ Veritas NetBackup & Backup Exec ✔ Dell EMC Avamar, Networker, Data Domain, DPS ✔ Cohesity, Acronis, AWS/Azure/GCP Backup ✔ Kubernetes Backup using Kasten K10, Velero ✔ DR Design, Replication, Failover & Recovery Testing 🖥️Virtualization Infra ✔ VMware ESXi, vCenter, vSphere, vSAN, HA, DRS, vMotion ✔ Microsoft Hyper-V, Failover Cluster, Replication ✔ Nutanix AHV ✔ Proxmox VE ✔ P2V, V2V, Live Migration & Infrastructure Consolidation 🐧💻Linux & Windows System Administration ✔ Ubuntu, RedHat, CentOS, Rocky Linux, Debian ✔ Windows Server ✔ Active Directory, DNS, DHCP, IIS, RDS, File Server ✔ Apache, Nginx, SSL, LVM, ACL, Bash & PowerShell Scripting ✔ Server Hardening & Security Best Practice ☁ 𝗠𝘂𝗹𝘁𝗶-𝗖𝗹𝗼𝘂𝗱 & 𝗖𝗹𝗼𝘂𝗱 𝗣𝗹𝗮𝘁𝗳𝗼𝗿𝗺𝘀 ❒ Azure – AKS, AVM, App Services, App Gateway, Key Vault, Defender, Sentinel, SQL, Cosmos DB, Blob Storage, Functions, ExpressRout ❒ AWS – EC2, EKS, ECS, Lambda, RDS, DynamoDB, S3, CloudFront, Route53, API Gateway, CloudFormation, IAM, VPC, Direct Connect ❒ GCP – Compute Engine, GKE, Cloud Run, Cloud Functions, BigQuery, Cloud SQL, Firestore, Pub/Sub, Cloud Storage, VPC, VPC peering, Interconnect ❒ OCI – OKE, Compute, Autonomous DB, Exadata, Object Storage, FastConnect, Load Balancer, Vault ❒ Hybrid / Multi-Cloud Networking (VPN, ExpressRoute, Direct Connect, Interconnect) ❒ Hybrid & Multi-Cloud Architecture, Cloud Migrations & Disaster Recovery ⚙ 𝗗𝗲𝘃𝗢𝗽𝘀 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 ❒ CI/CD Pipelines: Helm, ArgoCD, GitOps, GitHub Actions, GitLab CI, Jenkins ❒ IaC: Terraform, Ansible, ARM, CloudFormation ❒ Docker & Kubernetes (AKS, EKS, GKE, OKE, On-Prem K8s) 🔐 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 & 𝗖𝗼𝗺𝗽𝗹𝗶𝗮𝗻𝗰𝗲 ❒ IAM, RBAC, Conditional Access, SSO, Key Vault / KMS ❒ Multi-Cloud Security Monitoring (Defender for Cloud, AWS GuardDuty, GCP SCC) ❒ Compliance (SOC2, NIST, ISO 27001, HIPAA, PCI DSS) ❒ DevSecOps & Automated Security Scanning 👉 Let’s connect!