Senior Linux Systems Administrator

Lanlink Informática Ltda.

. Administer and manage corporate Linux environments, ensuring service availability, performance, security, and continuity.

Posted 11/9/2026full-timeRemote • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in administering and managing Linux environments, focusing on service availability, security, and performance. Proficient in implementing automation and modernization solutions while collaborating with development teams to enhance infrastructure efficiency.

Highest-signal resume keywords

Linux AdministrationHigh-Availability EnvironmentsITIL 4 CertificationLPIC-3 CertificationInfrastructure Monitoring

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Hard Skills

Linux Operating SystemsServer ConfigurationIncident DiagnosisSecurity UpdatesFirewall ConfigurationInfrastructure TroubleshootingTechnical DocumentationDevOps SolutionsAutomation ToolsPerformance Monitoring

Soft Skills

Collaborative Problem-SolvingTechnical Support

Tools & Technologies

Infrastructure Monitoring PlatformsProxy SolutionsContent-Filtering SolutionsIPSTicketing Systems

Certifications & Qualifications

ITIL 4 FoundationLPIC-3Red Hat Certified System Engineer

Industry Keywords

Information TechnologyService AvailabilitySecurity ControlsOperational EfficiencyTechnology Transformation

Tech Stack

Tools & technologies

Linux

About the role

Key responsibilities & impact

Administer and manage corporate Linux environments, ensuring service availability, performance, security, and continuity.
Manage server computing resources in an integrated manner with infrastructure monitoring and management platforms.
Install, configure, update, and maintain Linux operating systems, components, and services, including high-availability environments.
Diagnose, analyze, and resolve complex incidents and problems related to the Linux platform and its services.
Apply fixes, security updates, and patches released by manufacturers, assessing their impact and risks to the environment.
Define and administer naming standards for users, groups, and security structures.
Configure and provide support for proxy and content-filtering solutions used in the corporate environment.
Configure, monitor, and troubleshoot infrastructure and service monitoring tools.
Configure and support the administration of firewall, IPS, and other infrastructure security controls.
Define, structure, and administer shared server resources, including directories, permissions, and shares.
Provide technical support for issues related to hardware, operating systems, and services running on Linux servers.
Participate in infrastructure projects, providing technical information on the architecture, characteristics, and sizing of servers and their components.
Prepare technical documentation, operating procedures, and best-practice guides for using the Linux platform in production and high-availability environments.
Track and support the handling of tickets with suppliers and manufacturers to resolve highly complex issues.
Conduct research, evaluation, and technical specification of Linux-based infrastructure solutions.
Contribute to the maintenance, evolution, and continuous improvement of DevOps solutions used by the organization.
Work collaboratively with development teams to implement improvements in infrastructure performance, security, and automation.
Implement and administer tools that contribute to the modernization, automation, and operational efficiency of the technology environment.
Support technology transformation initiatives by proposing solutions aligned with infrastructure needs and industry best practices.
Contribute to defining standards, processes, and architectures focused on supporting and evolving the Linux platform.

Requirements

What you’ll need

Bachelor’s degree in Information Technology or a related field.
Proven experience administering and supporting corporate Linux environments, preferably in critical and high-availability environments, documented through professional records or an experience statement issued by a public or private institution.
ITIL 4 training of at least 12 hours.
Official ITIL 4 Foundation certification or higher.
LPIC-3 or Red Hat Certified System Engineer (RHCSE) certification.

Benefits

Comp & perks

Hapvida, Bradesco, or Unimed health insurance (depending on the region)
Hapvida Odonto or Bradesco Dental insurance
Meal or food allowance
Transportation allowance
Life insurance fully paid by Lanlink
TotalPass
Auster
Pharmacy partnership
Higher education institution partnerships
Corporate Education Platform
Welcome-to-the-World Baby Kit
Moodar Platform
Preferential position for people with disabilities (PwD)