Infrastructure support for an IBM Internal application with over 120k users built with Ruby on Rails. Kubernetes clusters implementation and management. Prometheus infrastructure and application monitoring. Postgresql HA clusters management and implementation with Patroni and Etcd. Metrics based application performance analysis and refactor. Development of CI/CD Chatops controlled pipelines with Travis, ArgoCD and HuBot Capacity planning and performance of regular DR test exercises.
AIX, Linux, Solaris and HP-UX servers administration and capacity planning. Oracle database HA clusters setup and administration. Backup systems implementation and administration. Applications development for bespoke monitoring and resource metering for customer billing purposes.
Developing and administration of a class 5 distributed softswitch with Asterisk and Opensips. Integration with the PSTN network via SS7 and GSM protocol gateways. Development of a prepaid and postpaid customer billing system with Ruby.
AIX, Linux, Solaris and HP-UX servers administration and capacity planning. Oracle database performance Backup systems implementation and administration.