Senior Linux Systems Administrator

Lanlink Informática Ltda.

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

Posted 10/22/2026full-timeRemote • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in administering and managing enterprise Linux environments, ensuring high availability, security, and performance. Proficient in implementing automation and DevOps solutions while providing technical support and documentation for Linux systems.

Highest-signal resume keywords

Enterprise Linux AdministrationHigh Availability EnvironmentsITIL 4 CertificationLPIC-3 CertificationDevOps Solutions Implementation

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Linux Operating SystemsInfrastructure MonitoringSecurity UpdatesIncident ResolutionProxy ConfigurationFirewall AdministrationAutomation ToolsServer Infrastructure ManagementTechnical DocumentationPerformance Optimization

Tools & Technologies

Monitoring ToolsContent-Filtering SolutionsVirtualizationContainersObservability Tools

Certifications & Qualifications

ITIL 4 Foundation CertificationLPIC-3Red Hat Certified System Engineer (RHCSE)

Industry Keywords

Information TechnologyEnterprise EnvironmentsCritical SystemsOperational EfficiencyTechnology Transformation

Tech Stack

Tools & technologies

FirewallsLinux

About the role

Key responsibilities & impact

Administer and manage enterprise Linux environments, ensuring service availability, performance, security, and continuity.
Manage the computing resources of servers integrated with infrastructure monitoring and management platforms.
Install, configure, upgrade, and maintain Linux operating systems, components, and services, including high-availability environments.
Diagnose, analyze, and resolve complex incidents and issues related to the Linux platform and its services.
Apply fixes, security updates, and vendor patches, assessing their impacts and risks.
Define and administer naming standards for users, groups, and security structures.
Configure and provide support for proxy and content-filtering solutions.
Configure, monitor, and troubleshoot infrastructure and service monitoring tools.
Configure and support the administration of firewalls, IPS, and other security controls.
Define, structure, and administer shared resources on servers, including directories, permissions, and file shares.
Provide technical support for hardware, operating systems, and services running on Linux servers.
Participate in infrastructure projects, contributing information on server architecture, characteristics, and sizing.
Prepare technical documentation, operating procedures, and best-practice guides for Linux in production and high-availability environments.
Track and support tickets with vendors and manufacturers involving highly complex issues.
Research, evaluate, and technically specify Linux-based infrastructure solutions.
Maintain, enhance, and continuously improve DevOps solutions.
Work with development teams to improve performance, security, and automation.
Implement and administer modernization, automation, and operational-efficiency tools.
Support technology transformation initiatives and propose infrastructure solutions.
Contribute to standards, processes, and architectures for supporting and evolving the Linux platform.

Requirements

What you’ll need

Bachelor’s degree in Information Technology or a related field.
At least five (5) years of experience in the specified specialty, working in critical enterprise and high-availability environments, demonstrated through employment records or a statement from a public or private institution.
ITIL 4 training, with a minimum duration of 12 hours.
Official ITIL 4 Foundation certification or higher.
LPIC-3 or Red Hat Certified System Engineer (RHCSE) certification.
Solid experience administering enterprise Linux environments, high availability, information security, monitoring, automation, DevOps, networking, and server infrastructure.
Knowledge of proxies, firewalls, IPS, virtualization, containers, observability tools, and automation will be considered an advantage.

Benefits

Comp & perks

Hapvida, Bradesco, or Unimed health insurance (available depending on the region)
Hapvida Odonto or Bradesco Dental insurance
Meal or food allowance
Life insurance fully paid by Lanlink
Transportation allowance
Gympass
Auster
Pharmacy benefits program
Partner university benefits
Corporate Education Platform
Welcome-to-the-World Baby Kit
Moodar Platform