Sr Systems Engineer - RHEL

• →BS Computer Science or a related field or equivalent combination of education and work experience.

• Minimum 5 to 7 years of prior working experience in systems engineering or related in a medium or large organization

• Strong Red Hat Enterprise Linux administration: systemd, package and patch management (rpm/dnf), SELinux, firewalld, cgroups, and journald/auditd troubleshooting.
• Advanced Bash scripting for administration, automation, monitoring, and operational tooling.
• Linux security hardening and compliance: FIPS/crypto policy, SSH keys and certificates, sudo and least-privilege service accounts, file and directory permissions, and CIS/SOX/PCI controls. Vulnerability remediation tracking (CVE status, needs-restarting) is part of this.
• Linux storage and performance diagnosis: LVM and filesystems, NFS, iSCSI/FC with multipath, and reading /proc and PSI, I/O, memory and CPU-steal data to work out whether a slow host is its own problem or its hypervisor's.
• Virtualization and hosts: hands-on Proxmox/KVM (clusters, HA, backup with PBS), ideally with VMware experience and migration between the two.
• Enterprise networking concepts: bastion/jump hosts, proxies, VIPs and load balancers, bonding, VLANs and MTU.
• Git-based workflows (GitHub or similar): branching, pull requests, code review, and CI/CD runners and pipelines.
• Infrastructure as Code and configuration management (Ansible, Terraform or comparable), with repeatable, reviewed, auditable deployment practices.
• Monitoring and logging for Linux services: Telegraf/Prometheus/Grafana or similar, with an understanding of log retention requirements.
• Supporting Linux-hosted application and middleware platforms: Apache, Tomcat, Kafka or other messaging, Solr, etc.
• Writing clear root cause analyses and working incidents end to end, partnering with security, networking, storage and application teams.

At Mercury, we have been guided by our purpose to help people reduce risk and overcome unexpected events for more than 60 years. We are one team with a common goal to help others. Everyone needs insurance and we can’t imagine a world without it.

Our team will encourage you to grow, make time to have fun, and work together to make great things happen. We embrace the strengths and values of each team member. We believe in having diverse perspectives where everyone is included, to serve customers from all walks of life.

We care about our people, and we mean it. We reward our talented professionals with a competitive salary, bonus potential, and a variety of benefits to help our team members reach their health, retirement, and professional goals.

Learn more about us here: https://www.mercuryinsurance.com/about/careers

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