[Remote] Linux Administrator

Note: The job is a remote job and is open to candidates in USA. T-Rex Solutions, LLC is seeking a skilled and experienced Linux Administrator to join their IT Operations supporting the US Department of the Treasury TCloud enterprise cloud development effort. The role involves managing and maintaining Linux systems across various cloud platforms to ensure stability, performance, and security of the multi-cloud environment.ResponsibilitiesLinux System Administration: Install, configure, and maintain Linux servers (CentOS, Ubuntu, Red Hat, etc.) in both physical and virtual environmentsPerform regular system updates, patch management, and kernel upgradesCloud Management: Deploy, configure, and manage Linux-based infrastructure in AWS, Azure, OCI, and GCPUtilize cloud-native tools and services for monitoring, scaling, and automating Linux workloadsAutomation and Scripting: Develop and maintain automation scripts using Bash, Python, and other relevant scripting languagesUtilize configuration management tools (e.g., Ansible, Puppet, Chef) to automate provisioning and configuration of Linux systemsMonitoring and Optimization: Implement and manage monitoring solutions to ensure high availability and performance of Linux systemsPerform performance tuning and optimization of Linux servers and applicationsSecurity and Compliance: Ensure systems comply with organizational and industry security standardsConduct regular security audits, vulnerability assessments, and implement remediation strategiesPerform vulnerability remediation and hardening of servers using DISA STIGs (Security Technical Implementation Guides)Backup and Recovery: Implement and manage backup and recovery solutions for Linux environmentsPerform regular testing of backup and disaster recovery processesCollaboration and Support: Work closely with security teams to support application deployment and troubleshootingProvide Tier 2/3 support for Linux-related incidents and service requestsParticipate in on-call rotationsSkillsMust be a US Citizen with the ability to obtain a Public Trust clearanceBachelors degree and four (4) years or more of related experience or Masters and two (2) or more years of related experienceProven experience managing Linux environments in multiple cloud platforms (AWS, Azure, OCI, GCP)Strong knowledge of Linux operating systems (CentOS, Ubuntu, Red Hat)Experience with cloud services and tools from AWS (EC2, S3, VPC), Azure (VMs, Blob Storage, Virtual Network), OCI (Compute, Block Volumes, Networking), and GCP (Compute Engine, Cloud Storage, VPC)Proficiency in scripting languages (Bash, Python)Familiarity with configuration management tools (Ansible Core/Tower/AAP/Galaxy, Puppet, Chef)Familiarity with Red Hat Satellite server including setup of content views to define and manage the lifecycle of content (such as RPM packages, container images, Puppet modules, and Ansible roles)Experience with monitoring tools (e.g. Prometheus, Grafana, CloudWatch, Azure Monitor)Knowledge of security best practices and compliance requirements (e.g. HIPAA, SOC 2, ISO 27001)Experience performing vulnerability remediation and hardening of servers using DISA STIGsCertifications in relevant cloud platforms (AWS Certified Solutions Architect, Microsoft Certified: Azure Administrator, Oracle Cloud Infrastructure Architect Associate, Google Professional Cloud Architect)Experience with containerization technologies (Docker, Kubernetes)Experience with CI/CD pipelines and DevOps practicesExperience with IaC (Infrastructure As Code, Terraform)BenefitsPerformance bonusesTraining and educational reimbursementTransamerica 401(k)Cigna healthcare benefitsPTO available to use immediately upon joining (prorated based on start date)Paid parental leaveIndividual and family health, vision, and dental benefitsAnnual budget for training, professional development and tuition reimbursementA 401(k) plan with company match fully vested after 60 days of employmentCompany OverviewT-Rex is a leading IT solutions provider helping the Federal government modernize, protect, and scale its systems and data efficiently and effectively. It was founded in 1999, and is headquartered in Greenbelt, Maryland, USA, with a workforce of 201-500 employees. Its website is https://www.trexsolutionsllc.com.