Francisco Pérez Castro

Senior Cloud & Middleware Support Engineer with 20+ years of experience delivering enterprise-level L3 support, cloud operations, middleware administration, and automation solutions across global environments. Specialized in Oracle Cloud Infrastructure (OCI), AWS EC2 environments, WebLogic, Linux, Kubernetes, RESTful integrations, and mission-critical production support for multinational organizations including Oracle, Pfizer, CitiBank, Volkswagen, Audi, and Daimler. Proven track record improving operational efficiency through automation, reducing incident resolution times, and ensuring high availability across complex distributed systems.

Strong expertise in troubleshooting, root cause analysis, cloud infrastructure, DevOps practices

PROFESSIONAL EXPERIENCE

ORACLE GLOBAL | Remote | 2024 – 2026 |Principal Fusion Middleware Engineer | Customer Success Services

Deliver enterprise-level L3 cloud and middleware support ensuring operational stability, automation, and high availability across different global Oracle environments.

• Provided L3 production support for Oracle Middleware platforms across multiple global tenancies and cloud regions.
• Automated reporting and integration processes using Python and Bash, reducing manual operational effort by more than 90%.
• Developed Python scripts that reduced integration information collection time from 2 hours to 2 minutes.
• Created Bash automation scripts that reduced ODI purging processes from one week to 8 hours.
• Managed more than 120 DBaaS environments ensuring high availability and operational continuity.
• Supported 80+ Oracle Integration Cloud (OIC) environments across multiple regions.
• Administered 50+ ATP and Oracle APEX cloud environments in enterprise production operations.

TATA CONSULTANCY SERVICES | Remote | 2023 – 2024 | Level 3 Middleware Support

Provide enterprise-level middleware and integration support for global banking operations.

• Supported more than 4,000 J2EE instances across Oracle WebLogic, WebSphere, Tuxedo, Tomcat, Apache, and IIS environments.
• Managed over 1,700 middleware servers distributed across multiple datacenters.
• Diagnosed and resolved complex RESTful API and enterprise integration issues within distributed banking environments.
• Collaborated with TIBCO teams to troubleshoot enterprise web services and API integrations.
• Managed incidents, requests, and change management processes using ServiceNow.

TATA CONSULTANCY SERVICES | Remote | 2022 – 2023 | Site Reliability Engineer

Ensure operational stability, troubleshooting, observability, and middleware reliability for Pfizer global operations.

• Supported over 5,000 J2EE instances across enterprise infrastructure environments hosted on AWS EC2 and on-premises datacenters.
• Managed more than 1,000 middleware servers across AWS EC2 regions and global datacenters.
• Diagnosed complex application integration issues involving REST APIs, Linux environments, and enterprise applications.
• Mentored offshore engineers and created operational SOPs and technical documentation.
• Managed SSL certificate renewals and production support activities across distributed AWS environments.

VOLKSWAGEN GROUP OF AMERICA | Remote | 2019 – 2022 | Senior Middleware Consultant

Support mission-critical integrations, APIs, and middleware operations for VW and Audi sales and spare parts business.

• Supported business operations involving more than 1,000 dealers and 300+ suppliers across USA and Canada.
• Identified and removed poison messages from 50K daily MQ transactions improving operational continuity.
• Supported month-end closing operations involving approximately 45K vehicle sales monthly.
• Managed integration APIs, SOAP services, IBM Integration Bus applications, and DataPower integrations.
• Performed maintenance activities for WAS Commerce instances running on Kubernetes (IBM Private Cloud)

AUDI MÉXICO | Onsite | 2018 – 2019 | Senior Oracle APEX Consultant

Develop and optimize Oracle APEX solutions supporting export control and logistics operations.

• Enhanced ECOS data loading processes reducing execution times from 12 hours to 20 minutes.
• Developed interfaces and data loaders for export control operations.
• Implemented ticketing and knowledge management systems improving software factory operations.
• Implemented version control processes and tools within development environments.

T-SYSTEMS INTERNATIONAL | 2015 – 2018 | Middleware Consultant

Deploy, maintain, and troubleshoot middleware and microservices infrastructure for Daimler backend operations.

• Deployed and maintained 120 microservices supporting enterprise backend operations.
• Troubleshot Java applications and RESTful API integrations identifying root causes of recurring incidents.
• Implemented monitoring, firewall rules, backups, and infrastructure orchestration using Puppet.
• Maintained virtual infrastructure and enterprise logistics applications.

PREVIOUS EXPERIENCE

SIEMENS ENTERPRISE NETWORKS | 2011 – 2015 |Product Lifecycle Management Consultant

Supported legacy PLM systems, SAP integrations, XML/XSL reporting, SQL debugging, and document management initiatives.

T-SYSTEMS MÉXICO | 2008 – 2011 | First Level Support Specialist

Provided SAP, Oracle hosting, infrastructure monitoring, backup, and production support activities for international customers.

DPM DRÄXLMAIER | 2008 | IT Production Advisor

Supported embedded systems, production line testing systems, logistics hardware, and industrial software configurations.

• Information Technologies Engineering | Universidad Tecnológica de Tecamachalco | 1998 – 2004
• Oracle Cloud Infrastructure 2025 Certified Generative AI Professional | Oracle University
• Oracle Cloud Infrastructure 2025 Certified AI Foundations Associate | Oracle University
• Oracle Fusion AI Agent Studio Certified Foundations Associate - Rel 1 | Oracle University | 2025
• Oracle Cloud Infrastructure 2024 Certified Foundations Associate | Oracle University
• Oracle Cloud Infrastructure 2024 Certified Observability Professional | Oracle University
• AWS Certified Cloud Practitioner | AWS | 2002
• AWS Certified Solutions Architect – Associate | AWS | 2002