Senior Operating Systems Administrator – Application Servers

Lanlink Informática Ltda.

. Plan, develop, deploy, and continuously execute technical support activities for ICT users and infrastructure support services .

Posted 11/5/2026full-timeRemote • BrazilSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in ICT infrastructure support, including server configuration, performance tuning, and security management. Proficient in administering Linux systems and developing automation scripts to enhance operational efficiency.

Highest-signal resume keywords

JBoss Server ConfigurationOpenShift AdministrationLinux System AdministrationITIL Foundation V4 CertificationRed Hat Certified JBoss Administration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Performance TuningCapacity StudiesBash ScriptingInfrastructure Version ControlTechnical Documentation

Soft Skills

Problem SolvingCustomer SupportCommunication

Tools & Technologies

TomcatSyslogCrontabGit

Certifications & Qualifications

ITIL Foundation V4 CertificationRed Hat Certified JBoss AdministrationOpenShift PaaS Administration

Industry Keywords

ICT SupportMiddleware PlatformsHigh-Availability ArchitecturesJudiciary Applications

Tech Stack

Tools & technologies

LinuxOpenShift

About the role

Key responsibilities & impact

Plan, develop, deploy, and continuously execute technical support activities for ICT users and infrastructure support services
Guide users, answer questions, receive, record, analyze, diagnose, and address customer requests
Resolve issues, implement services, perform migrations, and conduct knowledge transfers
Execute periodic procedures and control and update ICT infrastructure support documentation
Configure and tune JBoss and Tomcat servers integrated with OpenShift, including JVMs, inter-instance communication, datasources, and authentication/login modules
Apply performance tuning and design scalability configurations for applications supporting the Judiciary
Propose and implement security patches and version migrations for middleware platforms
Conduct capacity studies and propose high-availability architectures using clusters, load balancing, and redundancy
Monitor intermittent issues, failures, and slowdowns, and issue technical reports identifying root causes and definitive solutions
Administer Linux systems, including permissions, secure SSH, files, processes, services, and apt packages
Develop Bash scripts and schedule tasks using crontab
Architect, centralize, and manage structured logs via Syslog, including filtering, routing, retention, and forensic auditing
Manage configuration and infrastructure version control using Git
Participate in IT projects, contributing to application server sizing and architecture
Produce technical articles and documentation to support training for the court’s internal teams

Requirements

What you’ll need

Bachelor’s degree in Information Technology (IT) or a related field
Demonstrated professional experience through employment records or a statement from a public or private organization where the candidate has worked in the specified specialty
Official ITIL Foundation V4 certification or higher
Official RHCJA (Red Hat Certified JBoss Administration) certification or completion of the official JBoss Application Administration I course
OpenShift: PaaS Administration in Containers course, or equivalent, with at least 20 hours of instruction

Benefits

Comp & perks

Hapvida, Bradesco Saúde, or Unimed health insurance, subject to local availability
Hapvida Odonto or Bradesco Dental insurance
Alelo meal or food allowance
Life insurance fully paid by Lanlink
Transportation allowance
Pharmacy benefit
Partner university benefits
TotalPass
Internal education platform
Moodar platform (therapy platform)