Sales and Commercial R&L Creativo
Worked in a sales and commercial role at R&L Creativo in Otrobanda, Curaçao.
Supported the organization's commercial activities during the 2023 to 2024 period.
Leslie León
Senior Systems Administrator | DevOps Engineer | Site Reliability Engineer (SRE)
Actively looking · Member since 29 Sep 2026- Location
- Havana, Cuba
- Desired salary
- Unspecified
- Work preference
- Remote Only
- Experience level
- Senior
About
Professional summaryI am a Senior Systems Administrator, DevOps Engineer, and Site Reliability Engineer with more than 17 years of experience in systems administration, Linux infrastructure, networking, technical support, cloud platforms, and production operations.
I design, automate, monitor, and secure production environments with a focus on reliability, deployment velocity, and operational efficiency. My background includes Linux administration, virtualization, containers, cloud infrastructure, networking, and open-source technologies.
I work extensively with Docker, Kubernetes, GitOps, GitLab CI/CD, GitHub Actions, Ansible, Terraform, Bash, and Python. I build and optimize CI/CD workflows to improve software delivery processes.
I have implemented centralized observability and alerting using Prometheus, Grafana, Alertmanager, Zabbix, and Uptime Kuma. I use monitoring practices to improve incident response, reduce MTTR, and support reliable operations across Linux server environments.
I have experience integrating security tools such as SonarQube, HostedScan, Snyk, and OWASP Dependency-Check into development workflows. I also work with Nginx, Apache, PostgreSQL, MySQL, pfSense, DNS, VPN, LDAP, and Postfix.
I enjoy mentoring junior engineers and sharing knowledge through workshops and the SysAdmin Community of Cuba, a platform I founded for systems administration documentation, collaboration, and learning.
Skills
38 capabilitiesTech stack & tools
Working toolkitAnalytics
Application Hosting
Data Stores
Monitoring
Experience
Career historyIT / SRE / DevOps Engineer Avangenio
Worked as an IT, Site Reliability Engineering, and DevOps Engineer for Avangenio in Cuba. Focused on production infrastructure, automation, monitoring, security, and reliable delivery practices.
Applied experience in CI/CD, observability, Linux infrastructure, cloud platforms, containers, and DevOps tooling to support operational reliability.
IT / SRE Engineer ITGeeksFL
Worked as an IT and Site Reliability Engineer for ITGeeksFL in Miami, Florida.
Supported IT operations and reliability engineering work, drawing on systems administration, Linux infrastructure, networking, monitoring, and automation experience.
Administrator SysAdmin Community of Cuba
Founder and administrator of SysAdmin Community of Cuba, a community platform dedicated to systems administration knowledge sharing, documentation, and collaboration.
Mentors junior engineers and delivers workshops on Linux, Docker, DevOps, GitOps, and infrastructure best practices.
Education
Learning historyUniversity of Informatics Sciences
LPI Certification
LPI Certification.
Osvaldo Herrera Telecommunications Polytechnic Institute
Electronics Technician, Electronics and Telecommunications
Electronics Technician education.
Online
Professional Certifications, Open Source, Linux, GitOps, DevOps, SRE, DevSecOps, Technical Documentation, Kubernetes
Completed online certifications including Getting Started with OpenTofu, Introduction to Linux, Introduction to GitOps, Introduction to DevOps and Site Reliability Engineering, Introduction to DevSecOps for Managers, Open Source Technical Documentation Essentials, Creating Effective Documentation for Developers, and Kubernetes for Absolute Beginners.
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