Hire the Best Bash Shell Scripting Specialists

⭐ 100% Job Success | 🌟 Rising Talent | 🚀 Linux & DevOps Engineer I help founders and developers deploy, fix, and scale their infrastructure. From broken Docker containers and Nginx issues to full VPS deployments with SSL and CI/CD — I focus on solving real infrastructure problems fast and cleanly. What I work with: • Docker & Docker Compose • Linux / Ubuntu servers • Nginx & reverse proxies • CI/CD pipelines • Cloud & VPS deployments • FastAPI & PostgreSQL • Kubernetes basics • Infrastructure troubleshooting I already have hands-on experience maintaining Linux infrastructure, deploying web services, configuring SSL, and troubleshooting production issues. If your app needs deployment, debugging, or a stable server setup — I can help.

Docker Linux Nginx Backend Deployment Support VPS Setup Basic Server Configuration Troubleshooting App Deployment Assistance

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).

Your server's down, your Docker containers won't start, or your deployment pipeline breaks every push. I fix that — fast. What I've built and managed: → Ran a hosting startup with 100+ active servers, client domains, and the 2am emergencies that comes with it. → Deployed an IoT energy platform at Avrio Energy: Dockerized backend, JWT auth APIs, CI/CD pipelines, NGINX + HTTPS - still running in production. → Daily work: Linux administration, bash automation, AWS/GCP infrastructure, Kubernetes clusters, Terraform deployments. I respond within hours, document everything, and don't ghost mid-project. Server broken? Deployment stuck? Message me what's wrong.

## Professional Experience ### DevOps / Infrastructure Engineer Yeesshh 2018 – Present Sole DevOps/SRE responsible for full production infrastructure of ~50 web services and internal systems in digital advertising environment. **Infrastructure:** * 6 dedicated bare-metal servers hosted in OVHcloud * Proxmox single nodes and Proxmox cluster, altogether with ~30 virtual machines * Proxmox Backup Server, Custom NFS-based backup storage * Multi-region deployment (EU + Canada) * Internal VPN via Pritunl * Docker-based service deployments **Reliability & Operations:** * 24/7 on-call (30-minute critical SLA response) * ~99%+ uptime across production systems * Full Proxmox node disaster recovery (including restoration from backups) * Centralized monitoring via Zabbix * Centralized logging via Graylog * Security monitoring via Wazuh * Incident management via PagerDuty * Post-incident reporting and preventive improvements **Security & Compliance:** * DNS management (SPF, DKIM, DMARC) * DDoS mitigation using CSF/LFD, ModSecurity, mod_evasive * PCI compliance validation via Qualys (minimal adjustments required) * Regular patching & monthly backup validation **CI/CD & Automation:** * GitHub repositories * Jenkins pipelines for controlled deployments * Staging → testing → manual production release workflow * Limited Ansible automation (update & small maintenance scripts) **Modernization:** * Legacy OS upgrades * Partial containerization of services * Kubernetes - self-hosted proof-of-concept deployment (non-production) --- ### CloudOps / SysOps Engineer LCloud 2021 – 2023 Worked in AWS Partner environment supporting global enterprise and mid-size clients as L1 support. Environment: Amazon Web Services Responsibilities: * 24/7 production support (L1) * EC2, RDS, S3, IAM troubleshooting * Backup & restore procedures * Log analysis & incident escalation * Execution of infrastructure changes according to documentation * Exposure to IaC-managed environments --- ### Independent Linux Infrastructure Consultant 2012 – 2021 Provided infrastructure and system administration services for up to 100 international clients including web hosting providers. Experience includes: * Web hosting environments (Canada & Italy) * Email servers (Postfix/Exim) * DNS management * CMS deployments (WordPress, Drupal, Joomla) * Monitoring (Nagios, Zabbix) * Virtualization (Proxmox) * Security cleanup & WordPress malware removal * Redmine & GitLab environments --- ### Early Career (Condensed) Senior Linux Administrator – Retail network (250 employees) Network design, Linux desktop environment (60+ machines), POS equipment support, server infrastructure management. Additional system & network administration roles (2007–2012). --- ## Personal Technical Projects * Self-hosted AI workflow automation using n8n * Local LLM experimentation (LLaMA-based models compiled via llama.cpp) * Raspberry Pi lab (media server, backup storage, surveillance systems) * Mobile app development(dart) and backend infrastructure (Dockerized Node.js backend) --- ## Languages Ukrainian – Native Russian – Native English – Professional working Polish – Limited working Spanish - Learning

Interested in automation, opensource, unix/linux, AI, networking, developing command line tools, web applications, APIs. Learned basics of information security