Hire the Best Red Hat Administrators
in Romania

Overview Seasoned Linux Systems Engineer with 20+ years of hands-on experience managing complex server environments, cloud infrastructures, and network systems. I specialize in building robust, scalable infrastructure solutions with a focus on performance optimization, security, and automation. Available for 24/7 operational support with proven expertise in incident management and SLA enforcement. What I Offer I deliver end-to-end Linux infrastructure solutions including: - High-Performance Web Hosting Infrastructure: Apache, Nginx, LiteSpeed with LS Cache optimization, WHM/cPanel management - Database Administration: MySQL, MariaDB, PostgreSQL with replication, clustering, and performance tuning - Virtualization & Cloud Architecture: Proxmox, Virtuozzo, XenServer, KVM, VM migration - Email Systems: Postfix, Exim, Qmail with security solutions (Spamassassin, ClamAV) and authentication (SPF, DKIM, DMARC) - Infrastructure as Code: Ansible, Salt, Git-based deployment pipelines - Comprehensive Monitoring: Prometheus, Grafana, Icinga, Check_mk, Nagios - Backup Solutions: Custom rsync/scp systems, R1Soft, JetBackup, S3 integration - Network Administration: BGP, OSPF routing, VLANs, QoS, VPNs, security policies - Automation & Scripting: Bash, Python, PHP for system automation and deployment tooling Recent Projects - Implemented comprehensive monitoring infrastructure using Prometheus, Grafana and Icinga for a managed VPS provider - Designed and executed a multi-location backup strategy incorporating AWS S3 storage, local backups, and automated verification - Led infrastructure migration following company acquisition, ensuring zero downtime during transition - Implemented configuration management using Salt and Ansible for a fleet of 500+ servers - Created custom monitoring and alerting solutions for specialized business requirements Work Approach I believe in proactive infrastructure management with a focus on: - Building systems that are reliable, secure, and scalable - Implementing automation to reduce human error and increase efficiency - Maintaining comprehensive documentation for all systems and procedures - Regular security audits and updates to minimize vulnerabilities - Clear communication and transparency throughout the project lifecycle With expertise across multiple Linux distributions (CentOS, Alma/Rocky, Ubuntu, CloudLinux, Debian, Slackware) and a proven track record of managing critical infrastructure, I can help your business implement robust, secure, and efficient systems that support your technology goals.

Your Linux server is down, misconfigured, or leaking security gaps - I'll fix it fast and make sure it stays fixed. I specialize in setting up and hardening production Linux environments: VPS configuration, Nginx + SSL, Docker deployments, automated backups, and monitoring with Prometheus & Grafana. I don't just apply fixes - I document everything so you understand what changed and why. What I can help you with: → VPS setup and security hardening (SSH, firewall, fail2ban) → Nginx configuration + SSL certificates (Let's Encrypt) → Docker containerization and deployment → MySQL / PostgreSQL setup and maintenance → Monitoring and alerting (Prometheus + Grafana) → Incident troubleshooting and root cause analysis I've resolved 40+ real-world Linux failure scenarios on SadServers (Master certificate), built production-ready server environments from scratch, and completed a full DevOps lab covering Docker, Kubernetes, ArgoCD GitOps, and Prometheus monitoring. I respond quickly, communicate clearly, and document my work. If you have a server issue or need reliable Linux infrastructure set up properly - send me a message.

I make cloud infrastructure cheaper and safer. 25 years running production systems, remote since 2010 — I fix what's broken and keep it from breaking in the first place. Recent: I audited a multi-account AWS + Azure + OCI environment and cut ~30% off the addressable monthly cloud spend — killing orphaned resources, right-sizing, and shutting down workloads running 24/7 for no reason. Another five-figure annual saving identified and documented on top. What I do: — Cloud cost optimization — AWS / Azure / OCI. Find the waste, right-size, set guardrails so it stays down. — Infrastructure & security audit — what's exposed, what's misconfigured, what breaks if one component fails. — NIS-2 / compliance gap analysis — risk-management measures, vendor & supply-chain security, incident readiness for EU entities that now have to comply. — NOC monitoring & emergency response — 24/7, <4h SLA. — Migration, hardening, backup & DR — multi-cloud, VMware / Hyper-V, networking, firewalls. I've worked with clients across the US, Canada, EU, and the Middle East. I don't do tier-1 support. I don't read runbooks written by someone else. I know your stack because I've built stacks like it. Top Rated Plus. 100% Job Success. 9,900+ hours logged. One client relationship ran 10 years and 5,600+ hours. I'll tell you the truth even when it's not what you want to hear — including when a "fix" isn't worth doing. If you want the leaks found and closed, let's talk.

i am a System Administrator with more than 15 years experience. - specialized in Cloud, AWS, Linux, Rackspace. - i can offer a wide area of expertise from small installs to complex deploys, geographically distributed, - i can offer full IT services - monitoring services, active/proactive monitoring, alerting, security audit, IDS, production architecture design and implementation.

✅ Formerly employed by: IBM, Ericsson, MetroAG, Upwork ► Linux, Unix: +19 years. ► AWS: +10 Years. ► DevOps: +9 years . ► SRE: +7 Years. ► Upwork Talent Cloud Member I love Vim/TMUX and split keyboards. Currently I can only accommodate long-term projects. For European clients VAT Reverse Charge may apply. Thank you very much for reading my profile. I'm looking forward to meeting you! Aldo

11 years Linux expertise, passionate about all IT areas and projects. Software, Networking and Hardware skilled.