Operating Systems Specialist – Linux, Wintel

Mollica IT

. Monitor and manage operating system-level alerts .

Posted 9/15/2026full-timeRemote • BrazilMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates advanced troubleshooting skills in Linux and Windows server environments, with a strong focus on performance diagnostics, log analysis, and incident management under the ITIL framework. Proficient in automation and operational maintenance within virtualized environments, ensuring system stability and connectivity.

Highest-signal resume keywords

Advanced Linux TroubleshootingAdvanced Windows Server AdministrationVirtualization Technologies (VMware, Hyper-V)ITIL Incident ManagementAutomation with Bash and PowerShell

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Linux Performance DiagnosticsWindows Server TroubleshootingSystem Log AnalysisNetworking (DNS, TCP/IP, HTTP/HTTPS)Patching and Hardening ProcessesService Recovery ManagementObservability Tools (Dynatrace, Grafana, Prometheus, ELK)Virtualization MaintenanceCPU, Memory, and I/O DiagnosticsChange Execution under ITIL

Tools & Technologies

ServiceNowVMwareHyper-VPowerShellBash

Certifications & Qualifications

Red Hat (RHCSA/RHCE)Microsoft CertificationsITIL FoundationWindows Server or Azure CertificationsObservability Certifications

Industry Keywords

IT Operations24x7 Critical EnvironmentsSystems EngineeringComputer ScienceInformation Technology

Tech Stack

Tools & technologies

AWSAzureDNSGrafanaLinuxOpenShiftPrometheusServiceNowTCP/IPVMware

About the role

Key responsibilities & impact

Monitor and manage operating system-level alerts
Perform advanced troubleshooting on Linux and Windows servers
Diagnose CPU, memory, I/O, and performance degradation issues
Analyze system logs and critical services
Resolve complex incidents and perform immediate mitigation for critical incidents
Manage service recovery and controlled restarts
Validate connectivity between systems
Execute changes under the ITIL framework
Participate in patching, updating, and hardening processes
Operate virtualized environments
Produce structured technical analyses and document runbooks
Identify opportunities for improvement
Automate tasks
Collaborate with infrastructure teams
Perform other routine activities related to the role
Work from 11:00 p.m. to 7:00 a.m., including weekend and holiday shifts

Requirements

What you’ll need

Strong experience in IT operations
Strong experience with Linux and Windows in production environments
Experience with advanced troubleshooting in critical environments
Experience working in 24x7 critical environments
Experience with virtualization and operational maintenance
Experience with patching and stability processes
Advanced knowledge of Linux, including performance diagnostics, log analysis, service troubleshooting, filesystem management, and networking
Advanced knowledge of Windows Server, including administration, troubleshooting, Performance Monitor, Event Viewer, Windows services, IIS, and PowerShell
Knowledge of virtualization technologies such as VMware, Hyper-V, or equivalent platforms
Knowledge of patching, hardening, and OS hygiene
Knowledge of networking, including DNS, TCP/IP, HTTP/HTTPS, and connectivity diagnostics
Knowledge of observability tools, including Dynatrace, Grafana, Prometheus, and ELK
Knowledge of Bash and PowerShell for automation, diagnostics, and remediation
Knowledge of ServiceNow or a similar tool
Knowledge of ITIL, including incident, problem, and change management
Bachelor’s degree in Systems Engineering, Computer Science, Information Technology, or a related field
Intermediate or advanced Spanish proficiency for conversation
Intermediate or advanced English proficiency for conversation
Preferred: knowledge of AWS, Azure, or OpenShift (OCP)
Preferred: certifications such as Red Hat (RHCSA/RHCE), Microsoft, Windows Server or Azure, VMware/Hyper-V, ITIL Foundation, and observability certifications

Benefits

Comp & perks

Amil Health Insurance subsidized by the company for the employee (dependents may be added with payroll deduction)
Amil Dental Insurance (optional; dependents may also be included)
Meal allowance on a Flash Benefícios card – BRL 35.00 per day
POP Program (Personal Guidance Program) offering psychological, legal, financial, social, and pet support at no cost to the employee and eligible dependents
Wellhub (formerly Gympass), with access to more than 700 gyms throughout Brazil
Partnerships with universities for undergraduate and graduate programs
Discounts at language schools
Support for continuous professional development
Group life insurance
Partnership with SESC for the employee and dependents
Partnerships with major consumer brands
Profit-Sharing Program (PPR)