Database · Data Modeling · DataOps Engineer

Data to power
your business

Hi, I'm Carlos Villanueva — Sr. Database Administrator & Data Management Engineer for Oil & Gas Exploration & Production.

Twenty-plus years building the systems that move, model and safeguard data at enterprise and national scale — from legacy Oracle migrations to modern DataOps platforms.

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Carlos Villanueva, Database and Data Management Engineer, standing with arms crossed
Oracle 8 → 19c 20+ years in production

Oracle Mastery

Oracle 8 through 19c — PL/SQL, RAC, RMAN, ASM, Active Data Guard & Golden Gate.

Data Governance

Lifecycle, observability & auditability frameworks that keep E&P data trustworthy.

DataOps & ETL

Automated, observable pipelines across Azure & GCP with AI-driven agents.

Global Scale

15,000+ users, 14 countries and 5 continents consolidated into single repositories.

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Years in data engineering
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Users supported at KOC
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Countries consolidated
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Continents served
01 — About

A data engineer's story

I'm a senior database and data management engineer with more than 20 years building the systems that move, model and protect data at enterprise and national scale. My core specialty is Oracle — from version 8 through 19c — paired with two decades of PL/SQL development, custom ETL engineering and ER data modeling across the Export-Import and Oil & Gas industries.

For over 15 years I delivered information solutions in upstream E&P with Schlumberger, migrating legacy data into the Finder and Seabed models and administering complex data ecosystems for some of the world's largest national oil companies. I led the world's first national Finder-to-Seabed migration for PEMEX, served as a global subject-matter expert on the Seabed data model, and ran mission-critical Oracle environments supporting 15,000+ users. Twenty-five years on UNIX and Linux underpin all of it.

Today I design DataOps platforms that bring enterprise-grade governance, observability and automation to growing businesses — combining Oracle, PostgreSQL, MySQL and SQL Server with cloud infrastructure on Azure and GCP, and integrating AI-driven agents into automated workflows.

02 — Skills

Skills & Technologies

A cyan dot marks tools at Expert proficiency.

Databases

  • Oracle DB (8 · 8i · 9i · 10g · 11g · 12c · 19c)
  • MS SQL Server
  • PostgreSQL
  • MySQL

Languages

  • PL/SQL
  • PERL
  • Python
  • Java
  • JavaScript
  • HTML / CSS

DBA & Data Tools

  • Oracle APEX
  • TOAD
  • SQL Developer
  • SQL Developer Data Modeler
  • Oracle Data Modeler
  • Power Designer
  • RMAN
  • Golden Gate
  • Active Data Guard
  • Oracle ASM
  • Database Failover Tool (DFT)

Cloud & Infrastructure

  • VMware
  • VirtualBox
  • Microsoft Azure
  • Google Cloud Platform
  • Oracle Cloud Infrastructure
  • Linux
  • Solaris
  • n8n

Oil & Gas E&P

  • Seabed E&P Model
  • ProSource Suite
  • Petrel Studio
  • Drill DB / FINDER
  • DECIDE!
  • OFM
  • Avocet

Practices & Delivery

  • DataOps
  • ETL Pipelines
  • Data Modeling
  • Data Warehousing
  • Data Governance
  • AI-Driven Agents
  • JIRA
  • Confluence
  • MS Project
03 — Experience

Two decades, node by node

Engineering data pipelines across the world's largest energy operators.

  1. Apr 2026 — Present

    Senior Data Platform Engineer

    Ultra Business Intelligence — DataOps Engineering & Consulting

    • Lead the architecture and implementation of the ultra-biz.com cloud-based ERP platform: data modeling, backend services, infrastructure deployment and operational automation.
    • Deploy and manage cloud infrastructure across Azure and GCP — compute, storage, networking, IAM, monitoring and security hardening.
    • Build DataOps pipelines with n8n and integrate AI-driven agents for autonomous decision-making and dynamic orchestration.
    • Deliver reliable, scalable, auditable data platforms across Oracle, PostgreSQL, MySQL and SQL Server.

  2. Sep 2025 — Mar 2026 · 7 months

    Senior Data Management Engineer

    Schlumberger Data & Infrastructure — Khafji, Saudi Arabia

    • Supported Oracle-based data ingestion, classification and metadata organization with Oracle SQL Developer and Oracle Data Modeler.
    • Developed Sentinel, a Data Governance & Observability Framework defining lifecycle stages, components and governance structures.
    • Designed Oracle APEX interfaces for data observability, diagnostics and workflow visualization.
    • Applied DataOps practices to improve repeatability, documentation and operational clarity across teams.

  3. Feb 2024 — Aug 2025 · 1 yr 6 mos

    Senior DevOps Oracle Database Administrator

    HCL Technology (PayPal) — Guadalajara, Mexico

    • Managed enterprise-scale Oracle and MySQL databases in GCP and OCI, ensuring high availability for critical financial operations.
    • Administered Oracle ASM, Golden Gate replication and Active Data Guard for high availability and disaster recovery.
    • Performed switchover/switchback operations with the Database Failover Tool to maintain continuous operations.
    • Documented operational procedures, SOPs and issues in JIRA for governance and knowledge transfer.

  4. Mar 2022 — Feb 2024 · 2 yrs

    Senior Software Engineer

    Kwan Technology — Yucatán, Mexico

    • Provided worldwide technical support for TIBCO DataSynapse GridServer to financial institutions including Fidelity, Barclays, Bank of Montreal and Santander.
    • Recreated full client environments on Linux and Windows VMs (on-prem and GCP) to reproduce defects and validate fixes.
    • Diagnosed complex issues across logs, JVM behavior, DB queries, Java/Python/.NET drivers and network/security configurations.
    • Built automation scripts (Shell, Batch) and helper tools (Java/Python) to streamline environment setup and troubleshooting.

  5. Mar 2016 — Jan 2022 · 6 yrs 10 mos

    Information Management Engineer

    Schlumberger SIS (KOC E&P IM Team) — Kuwait

    • Managed the Oracle database ecosystem for KOC's national operations, supporting 15,000+ users across Production, Testing and Developer environments.
    • Led the full-scale KOC Finder-to-Seabed migration: Linux OS upgrade, Oracle 12c install, ProSource Enterprise deployment and DOV-based data loaders.
    • Built Falcon Eye, an autonomous system to monitor real-time database health with dashboards and alerts aligned to High Availability standards.
    • Developed DATEX ETL workflows and the Al Danah Data Warehouse with Golden Gate real-time replication for analytics and reporting.

  6. Dec 2015 — Feb 2016 · 3 months

    Information Management Engineer

    Schlumberger SIS (Geochemistry Project) — Kuwait

    • Designed and implemented a new Geochemistry section in the ProSource-Seabed Data Model to capture previously unavailable data for KOC.
    • Built DOVs in PL/SQL for insert, update and delete operations, ensuring accurate ingestion of historical and ongoing datasets.
    • Created staging processes to clean, validate and prepare historical geochemistry data before loading into the extended Seabed model.

  7. Aug 2014 — Dec 2015 · 1 yr 2 mos

    Information Management Engineer

    Schlumberger SIS (KUFPEC H.Q.) — Kuwait

    • Consolidated production data from 14 countries across 5 continents into a centralized Oracle 11g ProSource environment.
    • Built Perl-based parsing and ML-style scripts to extract data from Excel, PDFs and plain-text files of varying formats and quality.
    • Designed and deployed 30+ DOVs with PL/SQL triggers, plus custom loaders for Daily, Allocation, Sales, Budget and Forecast datasets.
    • Installed and administered Oracle 11g with RMAN backup and recovery; customized and extended the Seabed Model for KUFPEC.

  8. Mar 2012 — Jul 2014 · 2 yrs 5 mos

    Seabed Services Engineer

    Schlumberger SIS Houston Technology Center — Houston, Texas, USA

    • Maintained and evolved the global Seabed Data Model, evaluating and implementing change requests via PL/SQL, schema evolution and interface regeneration.
    • Delivered all Seabed model extensions required by ADNOC during their Finder-to-Seabed migration — over 500 changes for full schema alignment.
    • Served as QA engineer validating every model change against ProSource: DOVs, triggers, staging structures, ingestion and end-to-end workflows.
    • Administered Oracle 9i/10g/11g (including RAC) and managed Linux VMs hosting Seabed versions 2009.1–2013.1.

  9. Jul 2008 — Feb 2012 · 3 yrs 8 mos

    Service Delivery Engineer — National DBA

    Schlumberger SIS H.Q. (PEMEX) — Mexico City, Mexico

    • Led the world's first national Finder-to-Seabed migration, establishing the blueprint later used for Schlumberger's global Seabed strategy.
    • Consolidated three regional Finder databases (Oracle 9i) into a single National Seabed Database (Oracle 10g) for PEMEX.
    • Developed 20+ Data Object Views with triggers for controlled insert/update/delete on national-scale datasets.
    • Worked one-on-one with Seabed's lead architect and acted as the technical bridge between PEMEX, Seabed and ProSource engineering teams.

  10. Mar 2007 — Jun 2008 · 1 yr 4 mos

    Technical Consulting Regional DBA

    Schlumberger SIS Marine Region — Paraíso, Tabasco, Mexico

    • Owned the database setup, management and ETL workflow for drilling well-intervention and production data integration.
    • Designed an automated interface to transfer data between the Finder Model and Landmark legacy EDM, improving workflow reliability and accuracy.
    • Built prototype ETL interfaces from PROMSO to Avocet Data Capture and from DECIDE! to the Finder Model for visualization in DecisionPoint.

  11. Apr 2006 — Feb 2007 · 11 months

    Technical Consulting Regional DBA

    Schlumberger SIS South Region — Villahermosa, Tabasco, Mexico

    • Designed and managed the end-to-end data integration process from the Peloton Model to the Finder Model for drilling and well-intervention data.
    • Developed PL/SQL and PERL ETL mechanisms to clean and complete data, applying Finder Model business rules before ingestion.
    • Maintained a staging control model to track synchronization, control duplicates and ensure data integrity and timely delivery.
04 — Projects

Selected Projects

Schlumberger · PEMEX

PEMEX National Data Repository

Led the world's first national-level migration of an oil & gas data repository from Finder to Seabed, consolidating three regional Oracle databases into a single National Data Repository. The project became the foundation for Schlumberger's global Seabed adoption strategy.

  • Oracle 9i
  • Oracle 10g
  • PL/SQL
  • DOVs
  • Seabed Model
  • Linux

Schlumberger · KSA

Sentinel — Data Governance & Observability

Designed a modular, scalable governance framework for KJO's E&P data ecosystem, defining lifecycle stages, components and governance structures with real-time observability surfaced through Oracle APEX to improve data integrity and auditability.

  • Oracle APEX
  • Oracle Data Modeler
  • Metadata Mgmt
  • DataOps
  • UML

Schlumberger · KOC

Falcon Eye & Al Danah Warehouse

Built an autonomous monitoring system tracking real-time health across all KOC databases with High-Availability dashboards and alerts, alongside the Al Danah Data Warehouse with Golden Gate replication and transformation logic for analytics and reporting.

  • Oracle 12c
  • Golden Gate
  • ETL
  • Data Warehouse
  • HA Monitoring

Ultra Business Intelligence

ultra-biz.com Cloud ERP Platform

Architecting a cloud-based ERP platform that brings enterprise-grade governance, observability and automation to growing businesses — with DataOps pipelines in n8n and AI-driven agents orchestrating automated workflows across Azure and GCP.

  • Azure
  • GCP
  • n8n
  • AI Agents
  • Oracle
  • PostgreSQL
05 — Contact

Get In Touch

Let's build something reliable.

Open to senior data engineering, DBA and DataOps opportunities. The fastest way to reach me is by email.

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