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Marco Antonio Ramirez

@marcoantonioramirez

Message

I build resilient multicloud database platforms for critical banking, mobility, and analytics workloads.

Mexico

Message

I've built and operated mission-critical database platforms for Mobility ADO, Banco BASE, Dun & Bradstreet, Santander, and Concepto Móvil across AWS, Azure, GCP, OCI, and hybrid environments. At Mobility ADO, I designed multicloud database architecture for ticketing, fleet tracking, and passenger-management systems, including Oracle Autonomous Database on Exadata with a 99.995% SLA.

I've reduced Cassandra P99 latency by 35% across 30+ nodes, delivered multi-region AWS disaster recovery with RTO under one hour and RPO under five minutes, and automated MongoDB and PostgreSQL provisioning with Terraform to accelerate delivery by 60%. My work spans SQL, NoSQL, Hadoop, Kubernetes, cloud migrations, security, data governance, and automation for highly available data systems.

Experience

Work history, roles, and key accomplishments

Current

Multicloud Database Architect

Current

Mobility ADO

Mar 2025 - Present (1 year 6 months)

Designed and managed database environments across multiple public clouds (OCI, Azure, AWS, Google Cloud) for critical ticketing, fleet tracking, and passenger management systems. Implemented Oracle Autonomous Database on Exadata and developed data integration architecture between OCI and Azure.

Autonomous Databases Exadata OCI Azure AWS Data Integration Real Time Analytics OLTP Microsoft Entra ID

Database Lead, Digital Transformation

Banco BASE

Aug 2023 - Mar 2025 (1 year 7 months)

Spearheaded database architecture for enterprise digital transformation, delivering critical data projects on time and within budget. Led implementation of MongoDB clusters for digital banking services and designed infrastructure-as-code templates for MongoDB and PostgreSQL environments.

MongoDB Terraform PostgreSQL Python Ansible Infrastructure as Code Automation

Big Data DBA Engineer

Indra

Jan 2022 - Jan 2023 (1 year)

Managed Cloudera/Hadoop ecosystems with strict ACL policies for financial data compliance. Optimized Apache Cassandra for low-latency banking transactions and integrated AWS Athena for ad-hoc analytics over data lakes.

Cloudera Hadoop Hive Impala Cassandra Kubernetes Helm PostgreSQL ACLs Data Compliance

Cloud Database Migration Lead

Oracle / K2 Partnering

Sep 2021 - Jan 2022 (4 months)

Migrated on-prem Oracle workloads to OCI and Azure SQL using GoldenGate and ZDM, cutting TCO by 30%. Built ETL pipelines in Azure Data Factory and automated deployments via Terraform and Jenkins.

Oracle OCI Azure SQL Goldengate Azure Data Factory Terraform Jenkins ETL

DBA Big Data SQL/NoSQL

Dun & Bradstreet

May 2018 - Jan 2022 (3 years 8 months)

Led end-to-end management of multi-datacenter Cassandra clusters (30+ nodes), reducing P99 latency by 35%. Architected and implemented AWS multi-region DR for critical NoSQL workloads, achieving RTO under 1 hour and RPO under 5 minutes.

Cassandra Multi DC Management AWS Disaster Recovery Azure SQL Hybrid cloud

Lead DBA

Concepto Móvil

Apr 2015 - May 2018 (3 years 1 month)

Managed and tuned SQL Server, MySQL, PostgreSQL, and Oracle databases in hybrid (AWS/Azure + on-prem) environments. Automated backup and recovery workflows using Ansible and custom scripts, reducing MTTR by 50%.

SQL Server MySQL PostgreSQL Oracle AWS Azure Ansible Recovery

Senior DBA

Softek (BBVA)

Apr 2013 - Apr 2015 (2 years)

Led Oracle-to-Cassandra migration POCs, demonstrating 40% improvement in write throughput for high-velocity data ingestion. Provided 24/7 support and optimization for SQL Server and Azure SQL production environments.

Oracle Cassandra SQL Server Azure SQL Migration