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I'm a professional Senior Linux Systems Engineer with over 14 years of hands-on experience in managing, securing, and optimizing Linux-based servers and infrastructure. If you're a startup, entrepreneur, web agency, or enterprise looking for rock-solid server performance, automation, and security, you're in the right place. I work closely with clients to build stable, scalable, and secure Linux environments What I Can Help You With: Linux Server Setup & Management: Debian, Ubuntu, CentOS, AlmaLinux, RHEL etc Installation, Disk partitioning, LVM, RAID, system hardening Performance tuning and troubleshooting Web Server Deployment: Apache2, Nginx, PHP-FPM, SSL/TLS, Let's Encrypt Virtual Hosts, Rewrite Rules, Reverse Proxy configuration Mail Server Configuration: Postfix, Dovecot, Zimbra, Roundcube etc SMTP, IMAP, SPF, DKIM, DMARC setup Email deliverability and spam protection DNS & Control Panels: BIND, PowerDNS, DNS record management Webmin, ISPConfig, CyberPanel, Virtualmin, Vestacp etc setups Cloud & DevOps Integration: Infrastructure automation using Bash and Ansible Server provisioning, patching, user/group management, cron jobs Experience with various cloud platforms Cloud server setup and management VPN & Proxy Services: Squid, 3proxy, WireGuard, OpenVPN, Anyconnect, PPTP, Ipsec IP rotation, IPv4/IPv6 support, authentication Monitoring & Logging: Zabbix, Nagios, Grafana, Cacti ELK Stack: Elasticsearch, Logstash, Kibana Virtualization & Containers: KVM, Proxmox, VMware ESXi Docker containers, Docker Compose, orchestration Database & Backup: MySQL/MariaDB setup, optimization, replication, backup & restore Rsync, Rclone, cloud/offsite backup strategies Custom backup scripting and automation If you’re looking for a trusted Linux expert to support or transform your infrastructure, let’s connect and discuss how I can help!

With 12+ years of experience, I specialize in Windows, Linux, Network & Virtualization including VMware, Hyper-v, Proxmox and enterprise IT management to deliver secure, high-performance, and scalable infrastructures. 💻 Services that, I Provide: 1️⃣Windows Server, Active Directory, Entra ID, Intune, Microsoft 365 & G Suite 🔹 Windows Server (2012, 2016, 2019, 2022)- Active Directory setup and administration, Users/Groups, OU design, GPO, trusts 🔹 Core services: DNS/DHCP, WSUS, WDS, File/Print servers, permissions/ACLs, SMB shares 🔹 High availability: Failover Clustering, HA/DR planning and implementation 🔹 Identity & access: Microsoft Entra ID tenant management, identity integration (hybrid identity), conditional access basics 🔹 Endpoint management: Microsoft Intune device enrollment, compliance policies, configuration profiles, app deployment, security baselines 🔹 Security & certificates: AD CS / PKI, certificate services, SSL/TLS configuration and hardening 🔹 Microsoft 365 and Google Workspace (G-Suite) admin support (accounts, policies, mail flow basics, and tenant operations) 🔹 Active Directory Certificate Services (AD CS) & Public Key Infrastructure (PKI) – Deployment & Management 🔹 Web & app hosting: IIS installation/configuration, IIS Load Balancing, IIS WebFarm ARR, SSL binding, security hardening, and IIS troubleshooting 2️⃣ Linux & Web Server Administration 🔹 Linux Administration – RHEL, Ubuntu, Debian, CentOS 🔹 Service Management – Samba Server, Mail server, Zimbra, GIT, NFS, ISCSI, FTP, SFTP, Elasticsearch, Redis, LDAP, Docker, Nodejs, Express, NIC teaming 🔹 Database Management – MySQL, MariaDB, MongoDB, Percona, XtraBackup, PostgreSQL, Mirroring/High Availability. 🔹 Web Servers – NGINX / Apache (LEMP/LAMP), HAProxy, reverse proxy, SSL/TLS 🔹 Security: FirewallD, SELinux, UFW, ACL, SSH, hardening 🔹 Automation ( Bash, CHEF, Ansible, Terraform, Python ) 3️⃣VMware, Proxmox & Hyper-V Virtualization Expertise 🔹 VMware ESXi, vCenter, NSX, vSAN & Horizon deployment and management 🔹 High Availability, DRS, vMotion, D-Switch, VLANs,& AD integration in VMware 🔹 Proxmox with LXC/KVM, Live Migration, Ceph storage & HA cluster configuration 🔹 Hyper-V setup with clustering, Live Migration, Storage Spaces Direct & Azure hybrid integration 🔹 iSCSI/Fibre Channel SAN, snapshot management & storage optimization 🔹 Strong in VM hardening, disaster recovery & performance tuning 4️⃣ Backup, Storage, Database, & Disaster Recovery 🔹 Veeam Backup & Replication, hardened Linux repo, offsite backup strategy, immutability planning 🔹 Veeam Cloud Connect, Veeam Cloud Connect Replication, Veeam Service Provider, Veeam Backup as a Service (BaaS), Veeam DR as a Service (DRaaS) 🔹 Expertise in Synology NAS, QNAP, TrueNAS, & Nextcloud for secure storage 🔹 Backup, replication, failover, & DR strategies for BCP 🔹 Database admin for MSSQL, MySQL, PostgreSQL,MariaDB, Percona, Mirroring/High Availability, XtraBackup 5️⃣Networking, Firewalls, VPN & Security 🔹Routing & Switching (Cisco, Juniper, MikroTik , Huawei) 🔹 Routing/switching concepts, VLANs, trunking, NAT, LAN/WAN 🔹L4/L7 Firewall Policy Configuration (SonicWall, Sophos, Cisco ASA, Fortinet) 🔹VPN (IPSec, OpenVPN, WireGuard), Load Balancing & HA 🔹SD-WAN Deployment & NSX / NSX-T Micro-Segmentation 🔹Network Monitoring & Optimization using SNMP, NetFlow, Syslog 6️⃣ System Hardening, Security posture, endpoint/SOC tooling & Cloud 🔹 AWS: EC2, S3, IAM, VPC, Security Groups/NACLs, Route 53, Load Balancer, RDS, SNS/SQS 🔹 Skilled in SSL/TLS, clustering, & thread pool tuning 🔹 Strong in log analysis, performance tuning & system hardening 🔹 EDR: SentinelOne, CrowdStrike (deployment support, policy alignment, troubleshooting) 🔹 SIEM / Log management: Wazuh, GrayLog, Splunk, ManageEngine Log360 (log ingestion basics, alerting workflows, dashboard/reporting support) 🔹 Baseline hardening & hygiene: patching approach, access control, audit readiness, and incident-support workflows 🔹 Hardening Windows/Linux systems with Windows Firewall, Firewalld, IPTables, GPOs 🔹 Implementing NIST & CIS benchmarks, audits, patch and ISO-27001,PCI-DSS, HIPAA compliance 🔹 Python/PowerShell/Bash/Ansible scripting for automation 7️⃣ Monitoring, RMM + Documentation 🔹 Monitoring: Zabbix, Grafana/Prometheus, Nagios, AppDynamics & New Relic 🔹 RMM & MSP tooling: Syncro, ConnectWise (Automate/Manage where applicable), NinjaOne (Ninja RMM) for endpoint monitoring, patching, alerting, and remote support workflows 🔹 Strong focus on clear documentation, diagrams, SOPs, Change Management, reporting, and security posture documentation (controls, checklists, and runbooks) 🚀 Why Choose Me? ✔ 12+ years of enterprise IT experience in Windows, Linux, Virtualization & Cloud ✔ Proven expertise in troubleshooting & optimizing IT infrastructures ✔ Strong security focus – Ensuring system stability & compliance ✔ Efficient automation – Using Python, PowerShell & Bash scripting

* 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

I am an Open Source software solution professional and Linux System expertise with over 9+ years of extensive experience. I am also an Information Security professional with over 4 years of diverse Information Security experience; from the evolving enterprise needs of large and complex organizations to the development of large public web properties, and protecting their applications, data and infrastructure from attack. I have good ability to deliver solutions tied to organizational development and systems/network optimization. Ready to start working at your project right now with my skills set – # Operating System - RedHat, CentOs, Ubuntu, Debian, SUSE # Managed Cloud Platform - AWS, Azure, GCP, DigitalOcean, Linode # DevOps - Docker, Ansible, Puppet, Jenkins, CHEF, GIT, Kubernetes, Nagios # Managed VPS - On demand robust server setup # Managed Hosting - cPanel/WHM, Plesk, Webmin, DirectAdmin, GoDaddy, Rackspace, Linode, DigitalOcean, Hosting Setup, Backup & Migration # Web Service & Load Balance - Apache, Apache Tomcat, Nginx, Varnish, PHP-FPM, MemcacheD, phpMyAdmain, HAProxy # Database - MySQL, MariaDB, PostgreSQL # Mail Service - Zimbra, Postfix, Dovecot, Mail in a box, Spamassasin, ClamAV # SSL Certificate - DigiCert, Sectigo, Entrust, Geotrust, Thawte, GlobalSign, RapidSSL, Letsencrypt (install in any platforms) # Linux Administration - IPTables & CSF Host based firewall, Open Source WAF Setup, SSH Service Hardening, SSH Tunnel, File System Management, Rkhunter, Chkrootkits, TCP Wrapper, Fail2ban, PAM, RSync Backup, OS Optimization # Open Source Software - ProFTP, VSFTP, OwnCloud, NextCloud, UrBackup, OTRS Ticket Management, Monitoring Tools (Nagios, Cacti, Zabbix, Munin), GLPI, SugarCRM

🚀 Top Rated DevOps & Cloud Engineer | 50+ Jobs Completed | 8+ Years Experience Experienced in Windows/Linux, Cloud, DevOps, Docker & Kubernetes. I design, automate, and secure multi-cloud systems across AWS / Azure / GCP with IaC (Terraform/CloudFormation/ARM), Kubernetes (EKS/AKS/GKE), GitOps (ArgoCD/Flux), and CI/CD (GitHub Actions, GitLab CI, Jenkins, Azure DevOps, CircleCI, GCP Cloud Build, AWS CodeDeploy/Pipelines). Deep experience with Prometheus, Grafana, ElasticSearch, Nginx, Cloudflare, Shell/Bash, REST APIs, JavaScript/Angular, SQL, and Agile delivery (Confluence, Jira, Scrum). 💡 What I Do 🌐 Cloud & Server Platforms -AWS / Azure / GCP architecture: VPC/VNets, IAM/AAD, EC2/Compute, RDS/SQL/Cloud SQL, S3/Blob/Cloud Storage, ELB/ALB/NLB, CDN (CloudFront/Azure CDN/Cloud CDN). -Windows & Linux (Ubuntu, Debian, CentOS, AlmaLinux, RHEL) administration, patching, hardening, backup & DR. -Cost optimization, HA/auto-scaling, blue/green & canary deployments. 🐳 DevOps, Containers & IaC -Docker, Docker Compose, Portainer, Watchtower; Kubernetes (bare-metal & managed: EKS/AKS/GKE). -IaC: Terraform, CloudFormation, ARM; GitOps: ArgoCD, Flux v2. -CI/CD: GitHub Actions, GitLab CI, Jenkins, Bitbucket Pipelines, Azure DevOps, CircleCI, GCP Cloud Build, AWS CodePipeline/CodeDeploy. -Microservices design, secrets, configs, service meshes (Istio/Envoy), Helm/Kustomize. 📬 Email & SMTP Infrastructure (Deliverability First) -PowerMTA, Postfix, Exim, Mail Transfer tuning, rDNS, SPF/DKIM/DMARC, TLS, BIMI. -Inbox placement & warm-up, domain/IP rotation, reputation monitoring. -Stacks: MailWizz, Mautic, Acelle, Postal, Sendgrid/SES integration, bounce/complaint handling. -Google Workspace / Microsoft 365 setup & hybrid routing. 🔒 Networking & Security -Network design: subnets/VLANs, routing, VPNs (WireGuard/OpenVPN/IPSec). -Proxies/LBs: Nginx, HAProxy, Envoy; Gateways: AWS ALB/NLB, Azure App Gateway. -DNS & Zones: Cloudflare, Route 53, BIND; WAF, rate-limit, bot protection. -SSL/TLS (Let’s Encrypt/ZeroSSL), malware & backdoor cleanup, Fail2Ban/CSF, SSH hardening, compliance best-practices. 🧰 Control Panels & Self-Hosted Apps -Panels: cPanel/WHM, DirectAdmin, Plesk, CyberPanel, aaPanel. -Billing/CRM: WHMCS (automation, invoicing, provisioning). -Collaboration & apps: n8n workflows (ETL, alerts, integrations), Nextcloud, Matomo, ERPNext, LibreChat, Discourse. 📊 Observability & Logging -Prometheus + Grafana dashboards & alerts; ELK/EFK (ElasticSearch, Logstash/Fluentd/Fluent-bit, Kibana); Datadog, CloudWatch/Monitor. -SLO/SLA monitoring, incident response, on-call playbooks. 🧪 Scripting & Automation Bash, Python, Go, JavaScript for ops tooling, migrations, backup/restore, and repeatable runbooks. Cron/Timers, health checks, auto-healing, chat-ops. ⚡ Why Hire Me -Multi-cloud + Kubernetes + IaC end-to-end ownership—from design to day-2 ops. -Email deliverability expertise (warm-up, PowerMTA/Postfix/Exim, SPF/DKIM/DMARC) few DevOps cover well. -Networking & Security depth: VPNs, WAF, SSL/TLS, malware/backdoor remediation. -Proven track record: Top Rated, 50+ jobs, consistent 5-star outcomes. -Business-first delivery: Clear communication, documentation, and measurable results. 🔧 Tech Snapshot Cloud: AWS, Azure, GCP • Containers: Docker, K8s (EKS/AKS/GKE) • IaC: Terraform, CloudFormation, ARM • GitOps/CI/CD: ArgoCD, Flux, GitHub Actions, GitLab, Jenkins, Azure DevOps, CircleCI, GCP/AWS native • Networking: Nginx, HAProxy, Envoy, Cloudflare, Route53, BIND, VPNs • Email: PowerMTA, Postfix, Exim, MailWizz, Mautic, Acelle, SES/SendGrid • Observability: Prometheus, Grafana, ELK/EFK, Datadog, CloudWatch • Langs/Tools: Bash, Python, Go, JS/TS, REST APIs, Angular • Process: Agile/Scrum, Confluence, Jira. Let’s automate, scale, and secure your stack. Message me to kick off a quick discovery and roadmap.

Technical Security Expertise: - Vulnerability Assessment and Penetration Testing (Nessus, OpenVAS, Acunetix) - Security Operations (Wazuh XDR & SIEM, AzureAD PAM & DLP, Darktrace NDR & EDR) - FortiADC Load balancer with WAF & Barracuda Email Security Gateway. - Network Security (FortiGate Firewall, Cisco FTD) - Backup and Recovery (Veeam, Azure Site Recovery, Symantec Backup Exec, DPM) Cloud Expertise: - Architected and supported secure, scalable cloud solutions across AWS and Oracle Cloud Infrastructure (OCI) using core compute, networking, storage, and IAM services. - Designed and implemented multicloud architectures (AWS–OCI) with secure VPN/IPSec connectivity, workload optimization, and high availability. - Applied cloud security best practices, including IAM least privilege, network segmentation, encryption, logging, and compliance aligned with CIS benchmarks. - Optimized performance, availability, and cost through capacity planning, monitoring, automation (IaC concepts), and cloud best-practice frameworks. System Administration: - Active Directory, Group Policy, Exchange Hybrid (On-Prem & O365) - VMware VCenter, Citrix XenDesktop, Postfix Email Gateway, Squid Proxy - SCCM Auto push installation & MDT (Microsoft Deployment Toolkit) Automation and Tools: - Powershell, Scripting (Python), Docker (Guacamole, BookStack) - JIRA, Freshdesk Ticketing System, RD Web for remote platform Soft Skills: - Leadership and Team Management - Meticulous Reporting and Documentation - Cross-functional Collaboration