Celso Maluana

Summary

System and Database Administrator with extensive experience in mission-critical banking and telecom environments. Expert in Linux, Windows Server, Active Directory, and automation using Python, Bash, and Ansible. Proficient in deploying and managing open-source solutions, including PostgreSQL, MariaDB, ClickHouse, Metabase, Zabbix, Keycloak, Nextcloud, OS Ticket, OpenRPA, Joget, Apache Camel, Grafana, Prometheus, Elasticsearch, Kibana, Docker, Apache Kafka, among others. At my current organization, I designed and developed a Web-Based Expense Requisition Management System using Python (Flask) with MariaDB, featuring Active Directory authentication, multi-department approval workflows, automated email notifications, and integrated document management. Skilled in high availability architectures, database replication and tuning, disaster recovery planning, Core Banking T24 administration, and zero-downtime critical migrations.

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