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Full-Stack Programmer | DevOps & Cloud Engineer | API & Automation Expert I’m a results-driven programmer and DevOps engineer with strong experience building, deploying, and maintaining modern systems — from lightweight automation scripts to full production-grade cloud infrastructure. Over the past few years, I’ve worked on projects involving: - Backend Development: Python, PHP, Node.js, FastAPI, Flask, Express - DevOps & Cloud: Docker, Nginx, Linux, SSH, CI/CD, Git, VPS setup, server hardening - API Integration: Binance, Telegram, Deriv, REST, WebSocket - Database & Storage: MySQL, SQLite, Redis, S3, FTP automation - Automation & Bots: Trading bots, file synchronization, monitoring scripts, and API clients I specialize in end-to-end system building — from idea → backend logic → cloud deployment → ongoing optimization. Whether you need to deploy Docker apps, manage Linux servers, automate tasks, or debug backend issues — I’ll deliver clean, reliable, and documented solutions. * Tech Stack Highlights: Python | PHP | Node.js | FastAPI | Flask | MySQL | Docker | Linux | Git | Nginx | REST API | WebSocket | Cloud VPS

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!

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!

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).

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..!

DevOps Engineer with 5+ years of experience helping businesses build secure, scalable, and highly available infrastructure. I specialize in AWS, Linux, Docker, Kubernetes, CI/CD, and automation, enabling teams to deploy applications faster and more reliably. I have hands-on experience designing, deploying, and maintaining production environments for startups and growing businesses. Whether you need to migrate to the cloud, automate deployments, optimize Linux servers, or troubleshoot production issues, I can deliver reliable solutions. My Expertise ✔ AWS (EC2, VPC, IAM, Route53, RDS, S3, CloudFront) ✔ Linux Administration (Ubuntu, Debian, CentOS, RHEL) ✔ Docker & Kubernetes ✔ CI/CD (Jenkins, GitHub Actions, GitLab CI) ✔ Nginx & Apache ✔ Reverse Proxy (Nginx, HAProxy) ✔ Infrastructure Automation ✔ SSL & Let's Encrypt ✔ DNS & Email Server Configuration ✔ Monitoring (Zabbix, Nagios, Grafana) ✔ Backup & Disaster Recovery ✔ Bash & Python Scripting ✔ VMware ESXi & KVM I Can Help You With - Cloud Migration - Server Deployment - Dockerization - Kubernetes Cluster Setup - CI/CD Pipeline Automation - Performance Optimization - Security Hardening - Troubleshooting Production Servers - High Availability Infrastructure - Backup & Disaster Recovery Why Work With Me? ✅ 100% Job Success ✅ Fast Communication ✅ Clean Documentation ✅ Reliable & Secure Solutions ✅ Long-Term Support Let's build reliable, secure, and scalable infrastructure for your business.