💻 Unix / Linux Infrastructure Analyst 🔐 Identity & Access Management (IAM) Operations ⚙️ Automation & DevOps Enthusiast ☁️ Expanding knowledge in Cloud Engineering
I am an infrastructure professional with experience supporting Unix/Linux enterprise environments, including IBM AIX systems, working in production environments that require stability, security and operational reliability.
My work focuses on infrastructure operations, access management and incident response, contributing to the stability of critical services and enterprise platforms.
Alongside my infrastructure background, I am expanding my skills in automation, DevOps practices, cloud technologies and security-focused engineering.
I’m currently working on hands-on projects that connect infrastructure, automation and security:
- 🔐 DevSecOps (CI/CD security pipelines)
- 🔑 Cloud IAM Security (identity and access control)
- ☸️ Kubernetes Security (container and cluster hardening)
These projects simulate real-world enterprise environments, bridging traditional infrastructure with modern cloud security practices.
CI/CD pipeline with automated security enforcement using Trivy, Gitleaks and Semgrep
🔗 https://github.com/BettinaSM/enterprise-devsecops-security-pipeline
Simulation of IAM misconfigurations, privilege escalation and least privilege design using Terraform
🔗 https://github.com/BettinaSM/cloud-iam-security-lab
Hands-on lab covering container risks, RBAC misconfigurations and network exposure scenarios
🔗 https://github.com/BettinaSM/kubernetes-security-lab
• Experience supporting critical infrastructure incidents, focusing on rapid mitigation and service continuity
• Participation in technical analysis and operational risk reduction, with conservative decision-making based on infrastructure impact
• Creation and standardization of technical documentation, operational procedures and incident response flows
• Collaboration in security-related investigations, including access validation, log analysis and hardening verification
• Positive internal feedback for technical posture, collaboration and communication in high-pressure environments
I approach infrastructure from a security-first perspective, focusing on:
- Identifying misconfigurations and potential attack paths
- Applying least privilege across systems
- Automating security within CI/CD pipelines
- Thinking beyond deployment — considering risk, impact and resilience
AIX (5.2 – 7.3) Linux: Red Hat, Oracle Linux, SUSE, CentOS, Ubuntu, Debian Unix-like systems: FreeBSD, Solaris
VMware / vCenter IBM HMC HP-SA Docker (fundamentals)
IAM / IdAM LDAP PAM Active Directory ACLs SSH security Privilege management Hardening & patching Access investigation
Shell Script (Bash) Ansible (learning and labs) Python (basic)
Zabbix Grafana Dynatrace Splunk LPAR2RRD
Incident management Change requests (CRQ) Service operations Critical escalations SLA-driven environments Operational documentation and process standardization
As part of my professional development, I am expanding knowledge in:
• DevOps practices • Infrastructure automation • Container platforms • Cloud engineering fundamentals • Cloud security and DevSecOps
Cloud platforms under study:
AWS • Azure • Google Cloud
This profile also contains practical projects developed during my learning journey in DevOps, cloud and security.
Examples include:
• Linux infrastructure automation labs • Docker container environments • Kubernetes security scenarios • DevSecOps pipeline implementations • IAM and cloud security simulations
These projects complement my infrastructure background while building practical experience with modern platform engineering and security practices.
You can explore my portfolio here:
➡️ https://bettinasm.github.io/BettinaSM/
Technical Volunteer Instructor – Python & Linux 2021 – 2025
• Delivered introductory Python courses (2 editions) • Taught basic Linux administration in internship training programs • Participated in initiatives supporting women entering technology (Girls IT) • Provided mentorship and technical guidance for beginners in IT
LinkedIn https://linkedin.com/in/bettina-santana-de-meirelles
Currently building a career path focused on:
- DevSecOps Engineering
- Cloud Security
- Platform / Infrastructure Security
Open to opportunities where infrastructure, automation and security intersect.
⭐ Always evolving from infrastructure operations to a more security-driven and automation-focused engineering mindset.