José Manuel

Senior DBA & Sysadmin

Jose Pixelated

Profile

Senior DBA & Sysadmin

Professional Summary

Senior DBA with over 15 years of experience managing databases (Oracle, PostgreSQL, SQL Server, MySQL, MariaDB) and systems administration in complex on-premise and cloud environments. Expert in Oracle RAC, PostgreSQL Repmgr, AWS RDS, Azure, and Kubernetes, with a strong background as a sysadmin in Linux, VMware, and Weblogic. Seeking a Senior DBA role to lead database projects and optimize critical infrastructures.

Skills and Certifications

Databases: Oracle Database, PostgreSQL, SQL Server, MySQL, MariaDB, MongoDB Oracle RAC, Oracle Data Guard, Amazon RDS, Amazon Aurora, MySQL Cluster

Systems: Red Hat Linux, Ubuntu, CentOS, VMware vSphere, Kubernetes, Microsoft Azure, Weblogic Administration

Tools & Languages: RMAN, CommVault, Veeam, Barman, Bacula PL/SQL, Transact-SQL, FoxPro, Java, JavaScript, PHP, Python

Languages: Spanish (Native), English (C1 – Fluent, daily professional use)

Education & Certifications Summary

  • Solid academic foundation with two Higher Technical Degrees:
    • Systems Administration (2002–2004)
    • Application Development (2000–2002)
  • Specialized in advanced data management through a Master’s in Data Management at the University of Canterbury (2013–2014), with a focus on database design, performance optimization, and cloud integration.
  • Certified in core DBA and infrastructure competencies:
    • AWS Certified Solutions Architect – Associate (2023–2026)
    • Oracle Database 12c Administrator Certified Associate
    • ITIL Foundation Certification
  • Fluent in both relational and NoSQL paradigms, combining formal education with deep hands-on experience.

DBA Experience

  • Senior DBA with over 15 years of experience managing mission-critical databases in diverse environments (Oracle, PostgreSQL, SQL Server, MySQL, MongoDB).
  • Led high-availability architectures using:
    • Oracle RAC, Oracle Data Guard, PostgreSQL Repmgr, and SQL Server HA
    • Backup and recovery with RMAN, CommVault, Veeam, Barman, and Bacula
  • Extensive experience in cloud-based DB operations:
    • Designed and deployed architectures in AWS RDS, Amazon Aurora, Azure, and Kubernetes
  • Worked across critical business sectors:
    • Government (Fujitsu)
    • Aviation and Global Services (SITA)
    • Maritime logistics (Buss Data)
    • Sports betting / fintech (Optima™)
  • Known for:
    • Database migrations (e.g. SQL Server → PostgreSQL)
    • Performance tuning and query optimization
    • Automation-first mindset, integrating tools like Ansible, GitLab pipelines, and Bash scripting
  • Proven ability to reduce downtime, improve stability, and deliver under pressure in both freelance and enterprise settings.