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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!

🚀 DevOps & Infrastructure Engineer | 10+ Years Experience I help businesses build secure, scalable, and high-availability systems that cut deployment times, reduce costs, and improve reliability. With deep expertise in AWS, Red Hat OpenShift, Docker/Podman, Ansible, and Linux administration, I’ve delivered production-grade solutions for fintech, hosting, telecom, and enterprise clients worldwide. ✅ What I bring to your project: Cloud Infrastructure & Automation: AWS, Azure, GCP, Ansible, CI/CD pipelines Containerization & Microservices: OpenShift, Podman, Docker, Kubernetes Monitoring & Reliability: Prometheus, Grafana, Loki, EFK stack Security & Compliance: SOC 2 alignment, DevSecOps practices Database & Networking: PostgreSQL, MySQL, HAProxy, load balancing, AMQ 💡 I’ve led projects that achieved 99.95% uptime, reduced vulnerabilities by 60%, and cut provisioning effort by 70%. Whether you need infrastructure design, automation, or ongoing reliability support, I can help you deliver results faster and safer. Let’s discuss how I can help your project succeed.

🚀 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.

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).

🚀 Ready to Grow Your Business with Digital Marketing, SEO, Social Media & AI-Powered SEO? Hi, I’m a professional Digital Marketer, SEO Expert, Social Media Manager, and AI SEO Specialist with $60K+ earned on Upwork, 3,700+ hours worked, and 72+ successful projects completed. I help businesses increase online visibility, improve Google rankings, grow social media presence, generate quality leads, and turn traffic into real customers through smart, data-driven marketing strategies. 🔥 My Core Services Include: ✅ Digital Marketing Strategy Complete online marketing plans focused on brand awareness, lead generation, audience growth, and better conversion. ✅ SEO Expert Services On-page SEO, technical SEO, keyword research, competitor analysis, website audit, content optimization, and Google ranking improvement. ✅ AI SEO & Content Strategy AI-powered keyword research, SEO content planning, search intent analysis, content optimization, and smarter organic growth strategies. ✅ Social Media Management Facebook, Instagram, LinkedIn, and other platform management, content planning, post scheduling, caption writing, engagement strategy, and brand growth. ✅ Paid Ads & Campaign Support Facebook Ads, Google Ads, YouTube Ads, audience targeting, campaign planning, and ROI-focused marketing strategy. ✅ Google Business Profile & Local SEO Google Maps visibility, local SEO, business profile optimization, and local customer growth. 💼 Why Clients Trust Me: ✔ $60K+ earned on Upwork ✔ 3,700+ hours worked with clients ✔ 72+ successful projects completed ✔ SEO + social media + digital marketing combined strategy ✔ AI-powered workflow for faster and smarter results ✔ Clear communication and timely delivery ✔ Customized marketing plan based on your business goals ✔ Focused on long-term growth, traffic, leads, and sales Whether you need better Google rankings, professional social media management, AI SEO strategy, more website traffic, or a complete digital marketing plan, I can help you build a strong online presence and grow your business. 📩 Let’s connect and create a smart marketing strategy that brings more visibility, more traffic, more leads, and more sales.

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.