EXPLORE


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$20 USD / Hour
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Costa Rica (3:25 PM)
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Joined on December 8, 2011
$20 USD / Hour
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I am Carlos Porter, a Costa Rica-based Senior Site Reliability Engineer with 15 years of Linux/Unix experience and 7 years supporting Azure and cloud workloads. My strongest work is practical reliability engineering: stabilizing systems, cleaning up messy environments, automating repeatable operations, and leaving behind clear documentation so the next person can maintain the setup. I specialize in Linux server administration, production troubleshooting, operating system migrations, infrastructure automation, monitoring, storage work, virtualization, web hosting recovery, and cloud/VPS operations. I work with RHEL, AlmaLinux, SLES, Ubuntu, HP-UX, Solaris, AIX, Azure, AWS, IONOS, Hetzner, Hostinger, DigitalOcean, cPanel/WHM, Plesk, WHMCS, Docker, Kubernetes, KVM, Libvirt, Proxmox, VMware, MySQL, MariaDB, PostgreSQL, and DB2. I have handled 20-30 RHEL Leapp upgrades from RHEL 7 through 10, 20-30 SLES migrations from SLES 11 to 15, 5-10 AlmaLinux migrations from 8 to 10, Ubuntu 18.04 to 24.04 migrations, production fleets from a handful to hundreds of machines, Ansible and parallel Bash automation, high-availability sites handling thousands of connections per minute, delicate LVM2 storage migrations, Plesk/WHMCS recovery, and incident coordination with hosting-provider platform teams. I also work with practical AI infrastructure and local/self-hosted model tooling. My AI-related work includes Ollama, Open WebUI, LiteLLM, vLLM, SGLang, llama.cpp, SurfSense, JupyterLab, Caddy, Nginx, remote GPU hosts, OpenAI-compatible gateways, SSH tunnels to remote model servers, local model workflows, token-usage monitoring, AI gateway routing, coding-agent integration, Qwen/Ollama behavior control, prompt harness design, debug visibility, and compliance/retry loops. My work style is direct, practical, and evidence-based. I clarify the goal, inspect the environment, identify risks, build or fix in focused steps, test in realistic conditions when possible, deploy carefully, validate the result, and document the handoff path. I communicate clearly, prefer reliability over hype, and am fluent in English and Spanish. I am a strong fit for Freelancer.com projects involving Linux reliability, migrations, server recovery, hosting-provider infrastructure, Ansible/Bash automation, production troubleshooting, monitoring cleanup, self-hosted AI infrastructure, local model tooling, and practical workflow automation.
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Qualifications
CompTIA Linux+ Powered by LPI
2014
CompTIA
Overview: This certification, developed in partnership with the Linux Professional Institute (LPI), validates the competencies required of an early career system administrator supporting Linux systems. Key Areas Covered: It encompasses foundational skills in Linux system administration, covering areas such as system configuration, command line interface, scripting basics, network settings, and security fundamentals.
2014
Red Hat Certified System Administrator (RHCSA)
2014
Red Hat
Overview: RHCSA is a widely recognized certification from Red Hat, focused on Red Hat Enterprise Linux (RHEL). It validates skills in Red Hat system administration. Key Areas Covered: It covers Red Hat-specific system administration skills including installation and configuration of Red Hat Enterprise Linux systems, understanding of the command line, and the ability to handle files, directories, and documentation.
2014
Linux Foundation Certified System Administrator (LFCS)
2014
Linux Foundation
Overview: The LFCS is a vendor-neutral certification from the Linux Foundation that demonstrates a user's proficiency in basic system administration tasks on Linux systems. Key Areas Covered: This certification includes a wide range of Linux system administration skills, including system setup, command-line interface proficiency, user and group management, filesystem and storage management, and basic networking.
2014
Verifications
Accept rate
100%