Fernando Alfonso C.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I have been working as a Linux System Administrator since the year 2000, obtaining solid knowledge in the world from open source. I have participated in the development and implementation of infrastructure Linux for final users. Develop tools for administration and process automation. Monitoring of infrastructure, error analysis and debugging. Installation and maintains of SMTP / POP / IMAP servers, HTTP Servers / Antispam, NFS / Samba, Mysql / Postgres databases. Create and migrate implementations with Docker containers and auto-deployment using Jenkins. Monitoring infrastructure with tools as: Nagios / Munin / Zabbix / Prometheus / Grafana I have experience development app with Flask / Python / SQLAlchemy / Bootstrap3 Design and Develop webpage from scratch. Programming in Bash / Shell Script, Python, PHP, C. Knowledge in Xen, Docker, LXC, Ceph Storage, Ansible and more.