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Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates expertise in managing and optimizing IT infrastructure across hybrid, on-premises, and cloud environments, with a strong focus on Linux and Windows server administration, network management, and automation. Proficient in vulnerability management, incident response, and mentoring junior staff while ensuring adherence to best practices in security and system performance.
Highest-signal resume keywords
Linux Server AdministrationWindows Server AdministrationCloud Infrastructure Management (GCP/AWS)Network Security (OPNsense/pfSense)Scripting and Automation (Bash/PowerShell)
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
RHEL-like Linux DistributionsDebian/UbuntuActive DirectoryTCP/IP NetworkingVPN ConfigurationVMware/Proxmox/Hyper-VZabbix/Prometheus/GrafanaPythonIncident ManagementCapacity Planning
Soft Skills
MentoringIndependent Decision-MakingProblem-Solving
Tools & Technologies
GLPIJira Service ManagementIaC ToolsMonitoring SolutionsFirewall Management
Industry Keywords
Identity and Directory ServicesVulnerability ManagementBackup Strategy (3-2-1)Incident ResponseITSM
Tech Stack
Tools & technologiesApacheAWSDNSFirewallsGoogle Cloud PlatformGrafanaITSMLinuxMariaDBMySQLNGINXPHPPrometheusPythonSQLTCP/IPVMware
About the role
Key responsibilities & impact- Design, operate, and continuously improve IT infrastructure in hybrid, on-premises, and cloud environments
- Administer physical, virtualized, and cloud-based Linux and Windows production servers, including hardening, patching, and capacity planning
- Manage identity and directory services, including AD/Samba AD, LDAP, and SSO, as well as the account and access lifecycle
- Operate and enhance the corporate network, including highly available OPNsense/pfSense firewalls, VPNs, VLANs, routing, and QoS
- Administer resources in GCP and/or AWS, with a focus on IAM, costs, networking, and backup
- Maintain monitoring and alerting, defining metrics, thresholds, and incident responses
- Lead vulnerability management and remediation efforts
- Automate recurring tasks and standardize configurations using scripts, IaC, and pipelines
- Document architecture, procedures, and runbooks, and handle Level 3 support tickets through ITSM
- Participate in migration and upgrade projects, as well as the evaluation of new technologies
- Mentor mid-level and junior analysts
- Work independently when making technical decisions and take end-to-end ownership of critical incidents
Requirements
What you’ll need- Experience and knowledge of RHEL-like Linux distributions (AlmaLinux/Rocky) and Debian/Ubuntu
- Knowledge of systemd, LVM, and SELinux/AppArmor
- Troubleshooting experience with CPU, memory, I/O, and networking issues
- Experience with Windows Server and Active Directory
- Knowledge of GPO, DNS, DHCP, PKI/ADCS, and Linux–AD integration (SSSD/Kerberos)
- Knowledge of TCP/IP, VLANs, static and dynamic routing, NAT, and VPNs (IPsec, WireGuard/OpenVPN)
- Hands-on experience installing, upgrading, and administering OPNsense/pfSense firewalls in production
- Knowledge of VMware, Proxmox, or Hyper-V
- Practical experience with GCP or AWS, including IAM, VPC, compute, storage, and security
- Knowledge of Zabbix, Prometheus/Grafana, or an equivalent solution
- Proficiency in Bash and PowerShell
- Python is a strong plus
- Knowledge of hardening (CIS), TLS certificates, OpenVAS/Nessus, least privilege, and MFA
- Knowledge of the 3-2-1 backup strategy, restore testing, and defining RPO/RTO
- Knowledge of Nginx/Apache, PHP-FPM, MySQL/MariaDB, and SQL Server for basic administration and troubleshooting
- Knowledge of ticket, change, and incident management using GLPI, Jira Service Management, or a similar tool
Benefits
Comp & perks- Flexible benefits card (Meals, Mobility, Culture, Health, and Home Office) provided through a SWILE card
- Health insurance with full coverage for the employee and no copayments (Bradesco Nacional)
- Support for continuing education through courses, training, specialization programs, and language assistance
- Hybrid work model combining remote and in-office work (2 remote days)
- Extended maternity and paternity leave, among other benefits