Open to opportunities

Mario Marín

@mariomarn

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Platform/SRE leader optimizing CI/CD, Kubernetes, and cloud automation.

Colombia

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What I'm looking for

I am looking for a platform/SRE role where I can drive CI/CD optimization, Kubernetes and cloud automation, mentor teams, and deliver measurable velocity and cost improvements in a collaborative, security-focused environment.

I am a Platform/Site Reliability Engineer with 14 years of experience, including 3.5 years in web development, focused on CI/CD optimization, Kubernetes orchestration, and cloud infrastructure automation. I have a proven record of reducing deployment times, managing multi-cluster environments, and leading complex infrastructure migrations that improve developer velocity and operational resilience.

Throughout my career I have implemented Terraform and GitOps practices, built reusable CI/CD templates adopted across many repositories, and delivered measurable cost and performance improvements—such as a 38% CI build time reduction, 4x release velocity increase, and 25% infrastructure cost savings—while strengthening security and SOC2 readiness.

Experience

Work history, roles, and key accomplishments

Platform Engineer

Yum! Brands

Oct 2024 - Sep 2025 (11 months)

Accelerated monorepo CI/CD pipelines, reducing build times by 38% and improving developer velocity across three brands and five markets; architected reusable GitLab CI templates adopted by 25+ repos and modernized critical dependencies for maintainability.

Gitlab CI GitOps Dependency Upgrades

Senior Site Reliability Engineer

Ava

Mar 2023 - Oct 2024 (1 year 7 months)

Increased release velocity 4x by migrating critical services from Jenkins to GitHub Actions and reduced infrastructure costs by 25% via autoscaling and right-sizing; implemented AWS hardening for SOC2 and migrated services to Kubernetes using Crossplane.

Kubernetes GitHub Actions Crossplane AutoScaling Cost Optimization SOC2 CI CD

Senior Site Reliability Engineer

Bestow Life Insurance

Feb 2020 - Oct 2022 (2 years 8 months)

Administered six GKE clusters with Argo CD and cert-manager, deployed GitHub self-hosted runners using workload identities, refactored Terraform and Kustomize patterns, and established monitoring with New Relic and Open Metrics.

GKE Argo Terraform Kustomize GitHub Actions Workload Identity New Relic Monitoring

Cloud Chief Architect

Aurea Software

Jul 2017 - Jan 2020 (2 years 6 months)

Architected Kubernetes infrastructure for enterprise clients using custom Ansible modules for bare-metal clusters, centralized ELK logging on AWS, automated MongoDB replica management with controllers, and built a Go data-migration tool for acquisition consolidation.

Kubernetes Ansible AWS ELK MongoDB Go Data Migration

DevOps Engineer

Scalable Path

Jun 2014 - Jul 2017 (3 years 1 month)

Orchestrated 42 microservices on DC/OS (Mesos), pioneered early Kubernetes adoption for a fintech client, containerized Ruby and Java apps, and designed backup and disaster recovery protocols for mission-critical infrastructure.