Senior Systems Engineer – RHEL

This is a fully remote position, open to applicants in United States.

📋 Description

• Design, implement, manage, and support essential high-transaction systems that have a direct impact on customers, revenue, and compliance.

• Implement infrastructure systems and components that support business and IT applications, which encompass hardware, servers, operating systems, packaged software, configuration files, security certificates, database systems, and appliances.

• Independently conduct installations, configurations, updates, documentation, and knowledge transfer.

• Analyze, diagnose, isolate, and identify issues within systems.

• Develop short-term solutions to mitigate problem symptoms.

• Identify root causes and create or enact long-term remediation strategies.

• Engage in compliance-related activities, including reporting, establishing baselines, and conducting verifications.

• Review non-functional requirements and propose, design, and deliver supporting infrastructure for application development.

• Occasionally oversee small-scale IT projects.

• Provide technical leadership concerning architecture design and validation for the delivery of relevant systems.

• Share knowledge and mentor junior staff members.

• Advocate for and exemplify best practices in capacity, asset/inventory management, configuration, updates, procurement, and vendor engagement.

• Develop, design, test, and document improvement solutions and processes, which include scripting, automation, and workflow enhancements.

• Enhance system efficiency, reliability, scalability, and cost-effectiveness.

• Exhibit Mercury’s core values.

• Maintain professional interactions with customers, vendors, superiors, and peers.

• Perform various additional functions as necessary.

⛳️ Requirements

• Bachelor’s degree in Computer Science or a related field, or an equivalent combination of education and work experience.

• A minimum of 5 to 7 years of prior experience in systems engineering or a related field within a medium or large organization.

• Strong expertise in Red Hat Enterprise Linux administration, including systemd, package and patch management (rpm/dnf), SELinux, firewalld, cgroups, and troubleshooting with journald/auditd.

• Proficient in advanced Bash scripting for administration, automation, monitoring, and operational tooling.

• Knowledgeable in Linux security hardening and compliance, including FIPS/crypto policy, SSH keys and certificates, sudo and least-privilege service accounts, file and directory permissions, and CIS/SOX/PCI controls.

• Experience with tracking vulnerability remediation, including CVE status and needs-restarting.

• Skillful in Linux storage and performance diagnosis, including LVM and filesystems, NFS, iSCSI/FC with multipath, and interpreting /proc and PSI, I/O, memory, and CPU-steal data.

• Hands-on experience with Proxmox/KVM virtualization; VMware experience and migration between the two is preferred.

• Familiarity with enterprise networking concepts such as bastion/jump hosts, proxies, VIPs and load balancers, bonding, VLANs, and MTU.

• Experience with Git-based workflows, including branching, pull requests, code reviews, and CI/CD runners and pipelines.

• Proficient in Infrastructure as Code and configuration management using Ansible, Terraform, or comparable tools.

• Knowledge of monitoring and logging for Linux services, such as Telegraf/Prometheus/Grafana or similar tools.

• Experience supporting Linux-hosted applications and middleware platforms such as Apache, Tomcat, Kafka, and Solr.

• Ability to write clear root cause analyses and effectively manage incidents from start to finish, collaborating with security, networking, storage, and application teams.

• Regular attendance with a full-time schedule of at least 40 hours per week, including 8-hour shifts.

🏝️ Benefits

• Competitive compensation.

• Flexibility to work from any location in the United States for most positions.

• Paid time off, including vacation, sick leave, 9 paid Company holidays, and volunteer hours.

• Incentive bonus programs, including potential holiday bonuses, referral bonuses, and performance-based bonuses.

• Comprehensive medical, dental, vision, life, and pet insurance.

• 401(k) retirement savings plan with company matching.

• Engaging work environment.

• Opportunities for promotion.

• Education assistance available.

• Professional and personal development opportunities.

• Company recognition program.

• Health and wellbeing resources, including complimentary mental wellbeing therapy/coaching sessions, child and eldercare resources, and more.

• Reasonable accommodations for qualified individuals with disabilities.