Geofrey R.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 specialize in Linux-based database systems. I hold the qualifications of Bachelor of Science (computer science), and have also attained RHCE (RHEL 6.0, 2012), and OCP (RDBMS, 10g). What I can offer clients is a professional solution that will meet requirements. Top Skills: * Linux systems administration: RedHat, CentOS, Ubuntu * RDBMS administration: Oracle and RAC, MySQL * RDBMS design and programming: PL/SQL, SQL performance tuning * Systems Programming: bash, Perl Comprehensive Skills: * Web Infrastructure Design and administration: Apache, Tomcat, Squid, JVM * Virtualization: Xen, KVM, VMWare Server * Firewall: Linux IPTables, Firewalld * Mail Servers: Sendmail, Postfix * Software development: Java (SE, Spring MVC), PHP, HTML, CSS, JQuery, Github, Maven, Visual Basic * Cloud: Microsoft Azure architecture design and implementation, Linode, Digital Ocean, AWS and S3 * Monitoring: Nagios, Big brother, Cacti, Zabbix * Hadoop big data