Hire the Best Red Hat Administrators
in Bangladesh

I design and manage high-availability VoIP PBX and DevOps systems using Asterisk, FreeSWITCH, Kubernetes, Terraform, and AWS to deliver reliable, scalable, and secure performance. With over 12 years of hands-on experience in Linux system administration, cloud infrastructure, and real-time communications, I build platforms that stay online, scale automatically, and maintain crystal-clear voice quality even under heavy load. What I Do – VoIP & PBX Engineering: Deploy and manage Asterisk, FreeSWITCH, Kamailio, and OpenSIPS; configure SIP trunks, IVR, WebRTC, and call routing; troubleshoot jitter, latency, and NAT issues. – DevOps & Automation: Containerize applications with Docker and Kubernetes, implement Infrastructure as Code using Terraform and Ansible, and build CI/CD pipelines with Jenkins or GitLab CI. – Cloud & Infrastructure: Architect scalable environments on AWS, DigitalOcean, and Linode, integrating load balancing, auto-scaling, and failover for high availability. – Monitoring & Security: Deploy Prometheus, Grafana, and ELK/EFK stacks for proactive monitoring; apply hardening, TLS/SRTP, and firewall rules to safeguard uptime. – High Availability: Configure database replication, clustering, and backup automation to ensure continuous operation and disaster recovery. Why Clients Choose Me – Proven Track Record: Over $200K earned, 50+ successful contracts, and 9,000+ hours completed on Upwork. – End-to-End Expertise: From VoIP call-flow design to DevOps automation — I deliver fully documented, production-ready systems. – Clear Communication: Regular progress updates, transparent documentation, and dependable support across time zones. – Result-Driven Approach: My focus is not only deployment but long-term stability, cost optimization, and uptime reliability. If you’re launching, scaling, or troubleshooting a VoIP/PBX or DevOps infrastructure, let’s connect. Share your current stack and goals, and I’ll send you a short action plan within 24 hours.

* Over 5 years of On-prem work experience in TIER III datacenter * Over 3 years of Public/ Private Cloud work experience. * Cloud VM/ EC2 instances with proper networking and storage. * Windows Server with Roles and Features * Linux server OS with Mail, Web, FTP, EMAIL, DNS, DHCP, YUM, Cacti, Nagios services. * Switching: Cisco, Juniper, BDCOM, Quanta, Huawei etc * Routing: Cisco, Juniper, MikroTik, vyOS etc * Firewalls: FortiGate, PaloAlto, Juniper SRX, MikroTik, pfSense etc, * Wifi: Cambium, Ubiquiti, TP-Link, D-Link Tenda, Netgear etc * Security: WAF, Site-to-site VPN, Remote Access VPN, OpenVPN, PCI-DSS, OpenSCAP etc * Monitoring and troubleshooting of various services. Professional Experiences: * Currently working as an Assistant Manager (Systems ) at a well-reputed Data Center company doing Typical Level 3 / Core infra and system-related tasks. Professional Certifications: * Red Hat' RHCE, RHCSA * Microsoft' MCSA, Azure Administrator Associate (Az-104) * Cisco' CCNA * MikroTiks MTCNA * WHM & cPanel' CWSA also participated in Certified Ethical Hacker (CEHv9) course for cybersecurity skills. Skills haven't mentioned: * Implementing technologies protocol like VXLAN, VLANs, STP, RSTP, PVST+, inter-VLAN, SSH, IGRPv2, DHCP, OSPFv2, BGP, etc. * Providing offensive securities like HTTPS, SSL, Captcha Authentication, 2FA Authentication, DDos protection, CSRF protection, inbound/outbound email protection, etc. * Designing infrastructures in Microsoft VISIO for better security and compliance. Academic Qualification: * B.Sc. in Electrical and Electronic Engineering (EEE) at Daffodil International University. Please consider inviting me to apply for your job so that we can continue working together. Best Regards, Md Jan A Alom Beg

Currently working full time as a Server Administrator on a hosting company. Comfortable with Linux server environment and various software such as cPanel, WHM, WHMCS, Data Backup, Website Migration, and so on. I have experience working with live RHEL, Ubuntu, and other related operating systems. Delivering projects too quickly is not my main goal. I always take time to develop the best result my clients can get from the project. My services are: #Server Management # Initial Server Setup # Diagnosing and Resolving Server related issues #Hosting Environment Setup #Website Maintenance #Website Migration

Hi, I am Sazedur Rahman, working as a System Engineer for Linux/Unix-like OS Based Systems in a Reputed Financial Organization. I am new to Upwork but have more than five years of profound Experience in Linux/Unix System Administration, Configuration, Server Security and Automation. Completed various Live projects such as Authoritative DNS, DNSsec, Caching DNS, Zimbra Multi-Server Mail Solution, Multiple Web Server using Apache and NGINX, Local Repository for Linux Distributions Like- CentOS/Ubuntu & EPEL/Zimbra/RemiPHP, File Server Integrated with Windows AD for more than 8K Users, IPA Server, NTP Server, Cockpit Server, Secure File Sharing with Next Cloud. Expertise in - Linux Server Configuration- Web, Mail, DNS, Virtual Hosting, Samba, NFS, FTP, HA Cluster, Apache/NGINX with SSL/TLS, Gluster Storage (GFS2), Zimbra Mail Server, Red Hat Satellite, Spacewalk (open-source systems management), Linux System Security - Firewalld, iptables, fail2ban System Automation using- Shell Scripting, Ansible, Python Linux System Penetration Testing using OpenSCAP. Virtualization- vmware, rhev, kvm Kubernetes, Docker, Container Also certified as CCNA, RHCE, RHCVA & RHCA (Red Hat Cert ID: 160-039-582).

Client's Satisfaction, Quick & efficient Solution Delivery guaranteed. Profile: Experience of over 10 plus years in the field of Server/Network Administration with ISP, Corporate IT management. Serving as freelancer here around 10+ years. - Platforms : Linux, WINNT, VM Administration - Cloud : Amazon EC2-VPC, Loadbalancing, RDS, Route 53, S3, SNS, VPN,Firewall,Server administration / Rackspace / Azure / Digital Coean / Linode cloud administration. - DBMS technologies : MySql,Postgresql - iis/apache/tomcat/Nginx, Subversion,LAMP, LEMP - WHM / Cpanel build and administration in all sort of server platforms. - Website maintenance, migration, loadbalancing, DNS, SSL, Web Security - Email Server implementation, whitelisting, maintenance. - Jira, Confluence,Redmine administration, implementation & customization. - Mikrotik Router OS administration with ISP / WISP and total network implementation. - Web Development with PHP,AJAX,Jquery,HTML,CSS -Frameworks skill: Laravel, Flutter - 24 X 7 availability for support & critical issues.

Stop compliance failures before audits begin. I architect Zero Trust and Entra ID frameworks that secure 185K+ identities and deliver 100% audit readiness for regulated enterprises and MSPs. With 18+ years leading enterprise security, I partner with MSP/MSSP owners, CISOs, and IT Directors to align M365, Azure, and Intune with HIPAA, SOC 2, NIST SP 800-171, CIS Controls, and CMMC 2.0 standards. ✅ CREDENTIALS | AUTHORITY Status: Top Rated Plus (Top 3%) | 100% Job Success | 145 Jobs | $200K+ Earned Certifications: AZ-305 | AZ-104 | MD-102 | AZ-140 | MCSE: Cloud Platform and Infrastructure Scale: 185K+ Entra ID identities and 170K+ Exchange mailboxes migrated Security: 67K+ devices secured via Defender, SentinelOne, and Huntress Revenue: Delivered projects driving $7.7M+ revenue for a top U.S. MSP ✅ BUSINESS IMPACT Risk Reduction: Cut identity and compliance risk by 40%–60%. Cost Optimization: Reduced IT spend 17%–33% via M365 and Azure optimization. Audit Readiness: Achieved 100% HIPAA, SOC 2, NIST, CIS, and CMMC compliance. Efficiency: Cut provisioning time 60%–80% (under 30 mins) with Intune and Autopilot. Uptime Continuity: Maintained 99.99% availability with zero migration downtime. ✅ CORE CAPABILITIES Identity: Entra ID • Microsoft 365 • Exchange Online • SharePoint Online • Teams • Hybrid Identity Endpoint: Microsoft Intune • Windows Autopilot • Windows 11 • iOS • Android Security: Defender XDR • Defender for Endpoint • Sentinel • SOC • SIEM • SOAR • Zero Trust Compliance: Microsoft Purview • HIPAA • SOC 2 • NIST • CIS • CMMC 2.0 Infrastructure: Azure • AVD • Windows Server • Active Directory MSP Operations: NinjaOne, Datto, ConnectWise, HaloPSA, IT Glue ✅ PROVEN ENGAGEMENTS FINANCIAL SERVICES: STANDARDIZED 11K ENDPOINTS | SECURED $1.1M CONTRACT Challenge: Imminent audit failure from unmanaged, inconsistent branch endpoints. Architecture: Standardized Intune/Entra ID governance on NIST and CIS frameworks. Execution: Automated zero-downtime Autopilot compliance across 11,000+ devices. Outcome: Audit passed 3 weeks early, securing a $1.1M renewal. HEALTHCARE ORGANIZATION: ZERO DOWNTIME AZURE MIGRATION | 100% HIPAA COMPLIANCE Challenge: Unsecured legacy infrastructure exposed ePHI and blocked scaling. Architecture: Designed Zero Trust Azure Landing Zones with Entra PIM and Defender. Execution: Migrated workloads with full encryption and Purview DLP enforcement. Outcome: Hit 100% HIPAA compliance and cut infra spend by 33% with zero downtime. ✅ NEXT STEPS Whether you are preparing for an upcoming compliance audit, modernizing your identity and endpoint infrastructure, or executing a complex Microsoft 365 migration, I can help you deliver your project on time and with zero business disruption. Click "Invite to Job" or "Message" to schedule an initial Architecture and Compliance Discovery Call.