Information Security Administrator – Mid-Level Linux

Lanlink Informática Ltda.

. Configure, administer, and maintain security policies in Linux environments, ensuring system protection and compliance with institutional guidelines.

Posted 10/22/2026full-timeRemote • BrazilMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in configuring and administering Linux environments with a strong focus on security policies, access management, and compliance. Proficient in vulnerability management, log analysis, and implementing encryption solutions to safeguard sensitive data.

Highest-signal resume keywords

Linux Environment AdministrationInformation Security ManagementVulnerability ManagementAccess Control ManagementITIL 4 Certification

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Linux AdministrationSecurity Policy ConfigurationLog AnalysisVulnerability ScanningData EncryptionFirewall ConfigurationPatchingAccess ManagementSystem HardeningSecurity Auditing

Tools & Technologies

LUKSFirewall MechanismsAudit LogsTechnical Documentation

Certifications & Qualifications

ITIL 4 Foundation CertificationLinux Professional Institute Security Essentials CertificationLinux Professional Institute LPIC-1 CertificationLinux Professional Institute LPIC-2 Certification

Industry Keywords

Information Security StandardsComplianceHigh-Availability EnvironmentsAccess PrivilegesSecurity Incident Management

Tech Stack

Tools & technologies

Linux

About the role

Key responsibilities & impact

Configure, administer, and maintain security policies in Linux environments, ensuring system protection and compliance with institutional guidelines.
Manage access controls, file permissions, groups, and user privileges on Linux servers and workstations.
Configure, administer, and monitor firewall rules and other protection mechanisms for the Linux infrastructure.
Monitor and analyze event and audit logs to identify suspicious activity, anomalous behavior, and potential security incidents.
Apply patches, security updates, and fixes to Linux operating systems.
Implement hardening practices on Linux servers and workstations.
Conduct periodic assessments of security configurations, permissions, and access privileges.
Perform vulnerability scans on Linux servers, services, and workstations, supporting remediation efforts and risk mitigation.
Support security audit processes by verifying adherence to internal policies, standards, and regulatory requirements.
Assess the use of privileged accounts and segregation of duties.
Collaborate on the investigation and handling of security incidents related to Linux environments, supporting root cause analysis and preventive actions.
Implement and administer encryption solutions to protect sensitive data, including LUKS and equivalent mechanisms.
Prepare and maintain technical documentation related to security configurations, operating procedures, and infrastructure protection standards.
Support the implementation of security controls focused on the availability, integrity, and confidentiality of information.
Work jointly with infrastructure, development, and security teams to implement improvements and ensure the compliance of Linux environments.
Contribute to the continuous improvement of information security processes, tools, and controls.
Provide operational support analysis and monitoring services in accordance with the client's standards and processes.

Requirements

What you’ll need

Bachelor's degree in Information Technology or a related field.
At least 3 (three) years of experience in the stated specialty, in critical, high-availability corporate environments.
Experience must be substantiated through records in the Brazilian Work and Social Security Card (Carteira de Trabalho e Previdência Social) or a statement from a public or private institution where the candidate has worked.
ITIL 4 training, with a minimum duration of 12 (twelve) hours.
Official ITIL 4 Foundation certification or higher.
Obtain the Linux Professional Institute Security Essentials certification within 3 (three) months of starting the position.
Obtain Linux Professional Institute LPIC-1 or Linux Professional Institute LPIC-2 certification within 3 (three) months of starting the position.
Experience administering Linux environments with a focus on information security, hardening, access management, log analysis, patching, vulnerability management, firewalls, auditing, and data encryption.
Knowledge of information security standards and best practices is a plus.

Benefits

Comp & perks

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