Raelina Michelle Ferrera Perez
Santo Domingo,RD
Summary
Detail-oriented System Administrator and Junior DevOps Engineer with hands-on experience managing Linux and Windows Server infrastructures, automating workflows with Python, and deploying scalable cloud environments. Skilled in Terraform, Docker, and GitLab CI/CD, with a strong foundation in monitoring, security, and incident response using Grafana and cloudnative tools. Experienced in database management (MySQL, PostgreSQL, SQL Server) and performance optimization. Passionate about leveraging automation and DevOps practices to enhance reliability, security, and deployment efficiency across systems.
Overview
5
5
years of professional experience
1
1
Certification
Work History
DevOps & Information Systems Administrator
Green Earth Investments Ltd.
01.2023 - Current
- Manage and automate infrastructure provisioning using Terraform, ensuring scalable and secure environments in Google Cloud Platform (GCP).
- Build and maintain CI/CD pipelines with GitLab CI, GitHub Actions, and Jenkins for continuous integration and deployment of internal applications.
- Implement containerization and manage environments with Docker and Kubernetes, improving deployment consistency and reducing downtime.
- Develop Python and C# scripts for automation, data processing, and API integrations.
- Administer Windows and Linux servers, configuring domain controllers, Active Directory, and system policies.
- Monitor infrastructure health and application performance using Wazuh SIEM and GCP Cloud Monitoring, setting up alerts for key metrics.
- Maintain and optimize databases (PostgreSQL, MySQL, and SQL Server) for high availability and secure access.
- Collaborate with development teams to integrate DevOps practices, improve version control workflows, and ensure reliable release management.
System Administrator
Grupo Pagés BBDO
04.2021 - 12.2022
- Installed, configured, and maintained Windows, Linux, and macOS operating systems, ensuring stability, performance, and security across enterprise environments.
- Managed server infrastructure, including virtualization, storage, and network configuration, optimizing resource utilization and uptime.
- Administered Active Directory, group policies, and domain services to enforce secure authentication and access management.
- Configured and maintained network equipment such as routers, switches, and firewalls to ensure resilient and secure connectivity.
- Implemented infrastructure security measures, including password policies, endpoint restrictions, and system hardening practices.
- Performed preventive maintenance and system monitoring, ensuring high availability and reliability of critical services.
- Participated in infrastructure modernization projects, focusing on automation, scalability, and cross-platform integration.
Education
Associate Degree - Cybersecurity
Instituto Tecnológico de las Américas (ITLA)
Skills
- Cloud Infrastructure & Virtualization (GCP, AWS)
- CI/CD Automation (GitLab CI/CD, Jenkins, GitHub Actions)
- Infrastructure as Code (Terraform)
- Containerization (Docker, Kubernetes)
- System Administration (Linux, Windows Server, AD)
- Scripting & Automation (Python, Bash)
- Monitoring & Security (Wazuh SIEM, Cloud Logging, Linux Hardening)
- Version Control (Git, GitHub, GitLab)
- Google Cloud Platform (GCP)
- Basic AWS
- Power Automate (RPA)
- Apache Airflow
- Docker Compose
- Wazuh SIEM
- Snort
- Suricata
- Cloud Monitoring
- Access Control Policies
- Grafana
- Windows Server (Active Directory, GPOs)
- Linux Server (domain controllers)
- C
- C#
Certification
- Instituto Tecnológico de las Americas Advanced Python
- Instituto Tecnológico de las Americas Windows Server Administration
- Instituto Tecnológico de las Americas Linux Server Administration
- Cisco Network Fundamentals (CCNA1)
- Cisco Switching and Routing Fundamentals (CCNA2)
- Academia de Savitar Hacking Web
- Cisco Cybersecurity
References
- Ronaldo Matos, IT Manager - Grupo Pagés BBDO, ronaldomatos@gmail.com, +1 (829) 898-9380
- Juan Herrera, Delivery Manager- Cabicash Solutions S.R.L., jjh@gmail.com, +1 (829) 935-0432
Tools And Platforms
- Terraform
- Docker
- Kubernetes
- Jenkins
- GitLab CI/CD
- GitHub Actions
- GCP
- Wazuh SIEM
- Python
- Grafana
Timeline
DevOps & Information Systems Administrator
Green Earth Investments Ltd.
01.2023 - Current
System Administrator
Grupo Pagés BBDO
04.2021 - 12.2022
Associate Degree - Cybersecurity
Instituto Tecnológico de las Américas (ITLA)