Trinidad Marroquin

Practice Lead - Site Reliability Engineering & DevOps

SRE / DevOps / Platform Engineer with 25 years of information technology experience across infrastructure operations, automation, CI/CD, cloud platforms, databases, systems administration, and reliability practices, including three years leading a DevOps engineering team.

Professional Summary

Quality-driven and practical information technologist focused on making infrastructure repeatable, observable, secure, and maintainable. Experienced across Kubernetes platforms, Terraform-managed infrastructure, vSphere, image pipelines, CI/CD, Vault, Ansible, NetBox, Linux systems, cloud platforms, database operations, and production support.

I care about clear operating models: versioned changes, useful alerts, readable pipeline output, documented recovery paths, and systems that can be debugged under pressure.

Target Roles

  • Site Reliability Engineer.
  • DevOps Engineer.
  • Platform Engineer.
  • Infrastructure Automation Engineer.
  • Kubernetes / Cloud / vSphere operations roles.

Core Skills

  • Kubernetes platform operations: Rancher, RKE2, Longhorn, Calico, ingress, cert-manager, Velero, cluster autoscaler, node lifecycle, upgrade sequencing, and operational evidence collection.
  • Infrastructure as code: Terraform provisioning, module design, state organization, provider behavior, plan review, vSphere automation, and environment promotion.
  • Image and node pipelines: Packer image builds, template lifecycle, validation gates, OS template hygiene, and repeatable machine provisioning.
  • Secrets and security operations: Vault deployment, policy design, secrets engines, Kubernetes auth, PKI, transit encryption, token lifecycle, lease review, rotation patterns, audit logging, and operational guardrails.
  • Automation and inventory: Ansible remediation workflows, per-cluster inventory patterns, Vault-backed variables, NetBox ownership data, Python scripting, Bash scripting, and repeatable operational audits.
  • CI/CD and delivery: Concourse, Jenkins, Hudson, Nexus, Maven, validation stages, promotion workflows, deployment safety, and pipeline troubleshooting.
  • Observability and incident response: Prometheus, Grafana, SLOs, burn-rate alerting, dashboard design, alert routing, incident review, escalation, and evidence bundles.
  • Virtualization and platform operations: vSphere / vCenter, VM lifecycle, resource and template hygiene, CSI/CNS troubleshooting, Kubernetes node support, storage attach/mount triage, and automation integration.
  • Linux and middleware operations: Linux systems administration, patching, security maintenance, RPM packaging, Puppet, Tomcat, GlassFish, Apache HTTPD, and Oracle database administration.
  • Cloud platforms: AWS, Azure, cloud infrastructure patterns, identity, networking, monitoring, and platform operations.

Core Strengths

  • Turning messy infrastructure behavior into clear runbooks, checklists, and operational evidence.
  • Building automation that stays inspectable, reversible, and safe for production operators.
  • Connecting platform engineering practices across Kubernetes, vSphere, Terraform, Vault, CI/CD, observability, and Linux systems.
  • Writing deep technical documentation that helps engineers troubleshoot under pressure.

Certifications

  • The University of Texas at San Antonio: graduate-level Data Science Certificate coursework, 9 credit hours, 4.0 GPA. Courses included Programming for Data Science, Statistical Methods in Research, Introduction to Data Science, and Data Organization & Visualization. Transcript issued November 8, 2024.
  • Caltech Center for Technology and Management Education / Simplilearn: Post Graduate Program in DevOps, completed June 2, 2022. Certificate ID: 52288585.
  • The Linux Foundation: KCNA: Kubernetes and Cloud Native Associate. Issued February 2025, expires February 2027. Certificate ID: LF-b5hanhynvo.
  • The Linux Foundation: LFS250: Kubernetes and Cloud Native Essentials.
  • The Linux Foundation: LFS158: Introduction to Kubernetes.
  • The Linux Foundation: LFS151: Introduction to Cloud Infrastructure Technologies.
  • The Linux Foundation: LFS101: Introduction to Linux.
  • Credly profile: credly.com/users/trinidad-marroquin.
  • Previously held Credly-listed certifications: HashiCorp Certified: Terraform Associate (003), AWS Certified Cloud Practitioner.
  • Additional technical training and certifications completed over time as part of ongoing retooling across Linux, cloud, DevOps, SRE, and platform engineering. Details available upon request.

Languages

  • English
  • Spanish

Selected Proof Of Work

Experience

trinidadmarroquin.com - Site Reliability Engineering & DevOps

January 2025 - Present | Texas, United States

  • Built a public engineering log focused on SRE, DevOps, Kubernetes, vCenter, Terraform, Vault, Packer, NetBox, observability, CI/CD, security guardrails, and production operations.
  • Published field notes, project writeups, and operational references covering failure modes, runbooks, evidence collection, alerting, dashboards, secrets management, Kubernetes storage, vSphere automation, and infrastructure automation.
  • Developed companion patterns for safe operational tooling, read-only diagnostics, sanitized public technical documentation, and operator-friendly evidence collection.

Donyati - Practice Lead, Site Reliability Engineering & DevOps

April 2020 - January 2025 | Texas, United States

  • Led SRE and DevOps practice direction with hands-on leadership for infrastructure optimization, automation, documentation, and operational process improvement.
  • Led a team of DevOps engineers for three years, providing technical direction, mentoring, delivery coordination, and hands-on support across infrastructure automation, CI/CD, cloud, and reliability work.
  • Developed training programs, documentation practices, and tool evaluation frameworks for SRE and DevOps processes.
  • Standardized best practices across teams using structured documentation for tooling, incident response, infrastructure as code, and operational learning.
  • Created reusable templates for tool evaluation and post-incident reviews to improve team efficiency and knowledge sharing.
  • Facilitated collaborative learning and team-wide contribution to documentation and best practices for performance optimization and infrastructure scalability.
  • Documented deep operational insight into AWS, Azure, Terraform, Kubernetes, Prometheus, Grafana, CI/CD, automation, incident response, and related platform technologies.

Independent Consultant - Independent Consultant

March 2020 - April 2020 | San Antonio, Texas Metropolitan Area

  • Helped teams address hands-on technical problems while improving reliability, security, repeatability, and operational resilience.
  • Focused on practical guidance for robust systems, adaptable processes, and dependable infrastructure practices.

H-E-B - Lead Technical Specialist

September 2003 - March 2020

  • Worked in an infrastructure provisioning role building and configuring virtual machines from templates across development, certification, and production environments.
  • Provided input to internal cloud teams for automation and template design improvements.
  • Managed middleware platforms including Tomcat, GlassFish, and Apache HTTPD servers.
  • Worked with infrastructure teams to build environments for internally developed and commercial applications.
  • Supported monitoring, patching, and security maintenance for managed systems.
  • Developed RPM packages to maintain consistent deployments across a large number of systems.
  • Used Puppet to maintain RPM installations for distributed systems.
  • Used Jenkins, Hudson, Nexus, and Maven to move application code from development to certification to production environments.
  • Built Python and Bash scripts to automate routine tasks, support administration duties, package repeatable operations, and reduce manual toil.

Valero Energy Corporation - Oracle Database Administrator

June 2001 - September 2003

  • Supported Oracle database administration responsibilities.

Education

The University of Texas at San Antonio

Bachelor of Applied Science (BASc), Mathematics and Computer Science, 1994.

Graduate-level Data Science Certificate coursework, 2023-2024. Completed 9 credit hours with 4.0 GPA.

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