Administrateur Systèmes au sein de Ciril GROUP, hébergeur Cloud, avec expertise en infrastructures et sécurité. Assurant l’exploitation des serveurs et participant à des projets d’optimisation des services.
IT
Hybrid Senior Linux Administrator
Posted 2 weeks ago
About the role
- Senior Linux Administrator supporting the US Census Bureau’s Unix Management Branch. Responsible for maintaining RHEL infrastructure and providing operational support to ensure data processing success.
Responsibilities
- Manage the complete lifecycle (provisioning, patching, upgrading, decommissioning) of all RHEL servers supporting the enterprise.
- Develop and maintain automation using Ansible, Bash, and/or Python to ensure consistent and rapid deployment of enterprise-wide changes.
- Deploy and maintain servers in clustered environments.
- Proactively monitor and tune the performance of the RHEL environment to support high-throughput, low-latency data processing and ingestion.
- Perform kernel-level tuning (sysctl), I/O optimization, and network performance analysis.
- Troubleshoot and resolve complex performance bottlenecks related to CPU, memory, storage, and networking.
- Serve as an escalation point for both the Operations Center and other Unix team members.
- Triage and resolve infrastructure issues, providing root cause analysis.
- Work closely with application, storage, and network teams to resolve cross-domain service issues.
- Work with the Backup team to ensure consistent backups of all Linux servers.
- Implement and maintain system security in accordance with federal standards (NIST, FISMA, and DISA STIGs).
- Manage user access and system entitlements, including SSSD/LDAP/Active Directory integration.
- Troubleshoot and resolve SELinux problems.
- Participate in security audits and provide remediation for findings.
- Participate in an on-call rotation for 24/7/365 operational support.
Requirements
- Must be a U.S. Citizen.
- Must be able to pass a background investigation to obtain and maintain a Public Trust security clearance.
- Bachelor's degree in Computer Science, Information Technology, or a related field (or 7+ additional years of equivalent experience).
- 10+ years of dedicated experience as a Linux/RHEL Engineer or Administrator.
- Strong experience in Linux performance tuning, kernel parameter analysis (sysctl), and troubleshooting with tools like vmstat, iostat, sar, and perf.
- Expert-level scripting with Bash and strong proficiency with Ansible for configuration management and automation.
- In-depth knowledge of Linux storage (LVM, XFS, NFS, CLVM) and networking (TCP/IP, DNS, bonding).
- Expertise across RHEL 7, 8, and 9 environments.
Benefits
- 401(k) with matching and 100% Vested
- Health Insurance - 3 plans to select from
- Dental insurance
- Vision Insurance
- Health savings account
- Life insurance
- Short Term Disability
- Long Term Disability
- AD&D
- Paid time off
- Professional development assistance
- Training
- Tuition reimbursement
- Flexible schedule
- Flexible spending account
- Referral program
- Paid Legal Plan
- and more....
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
Tech skills
Location requirements
Systems Administrator managing OnBase ECM platform, supporting manufacturing operations in the US. Collaborate to streamline document management and optimize workflows.
IT System Administrator responsible for server administration and user management in a hybrid environment. Leading IT projects and providing 1st and 2nd level support in a renowned engineering company.
Telephony Systems Administrator overseeing daily operations of telephony systems for call center in Phoenix, AZ. Liaising with teams to ensure high service levels for customers.
Telephony Systems Administrator ensuring Call Center telephony systems operate smoothly. Providing technical support, managing integrations, and overseeing IVR functionality for optimal customer service.
System Administrator maintaining NFPA's Windows and Linux environments while managing Azure resources. Collaborating with development teams for CI/CD and DevOps integration efforts.
Systems Administrator to support CACI's Service Desk team, responsible for end - user applications and hardware/software troubleshooting. Covers a 24 - hour help desk, including evenings and weekends.
Senior Linux Systems Administrator at Boeing supporting ArgonST programs with Linux infrastructure. Involves technical leadership, DevSecOps principles, and collaboration with cross - functional teams.
Yardi Administrator managing the accounting and operations system for Housing Trust Group. Designing processes and training associates on the use of Yardi while ensuring system performance in Miami, FL.
Senior Systems Administrator optimizing Epic Systems within Northwest Permanente’s medical informatics department. Leading technical projects and collaborating with healthcare teams to enhance patient care.