Senior Linux Engineer

Responsibilities

• Oversee installation, configuration, and maintenance of Linux servers across diverse enterprise client environments.
• Serve as a senior escalation point for P1/P2 client incidents, ensuring timely SLA adherence, technical resolution, and clear communication to clients and internal stakeholders.
• Proactively maintain and develop all Linux infrastructure technology to deliver 24x7x365 uptime services.
• Perform system performance management, patching, troubleshooting, upgrades, and lifecycle management to ensure high availability and reliability.
• Implement and enforce security best practices, vulnerability management, and compliance standards (CIS, NIST, PCI-DSS, HIPAA, or client-specific frameworks).
• Support incident, change, problem, and request management processes in alignment with ITIL frameworks.
• Collaborate with cross-functional teams (Windows, Network, Security, Cloud) to deliver integrated client solutions.
• Lead or support client onboarding and migration projects by assessing Linux environments, standardizing configurations, and integrating systems into MSP monitoring and management platforms.
• Develop and refine SOPs, runbooks, and knowledge base articles to enable repeatable processes across multiple client environments.
• Implement and optimize monitoring, alerting, and logging solutions (e.g., Prometheus, Grafana, Splunk, ELK), generating reports for internal use and client presentations.
• Provide mentorship and technical guidance to junior engineers and act as a role model for best practices.
• Participate in on-call rotation, including business hours, weeknights, weekends, and holidays.

Qualifications

• Bachelor’s degree in computer science, Information Systems, or similar relevant field.
• 9+ years of hands-on experience in Linux administration (RHEL, CentOS, Ubuntu, Debian, or similar).
• In-depth knowledge of Linux systems: installation, configuration, troubleshooting, performance tuning, and system hardening.
• Proven expertise with authentication, authorization, and identity integration: user/group management, SSSD/REALMD, Kerberos, and LDAP/AD.
• Strong scripting and automation skills in Shell, Perl, Python, and experience with configuration management (Ansible, Puppet, or Chef).
• Experience with virtualization (VMware, KVM) and exposure to cloud platforms (AWS, Azure, GCP).
• Solid understanding of security and networking, DNS, NFS, SMTP, HTTP/S, SELINUX, and firewalls within Linux ecosystems.
• Familiarity with SAN/NAS storage management, LVM, and multipathing.
• Experience working in ITIL-driven environments with proven SLA accountability.
• Strong communication and client-facing skills, with the ability to explain technical concepts to both technical and non-technical stakeholders.

Good to Have

• Certifications such as RHCE, Linux Foundation Certified Engineer, CompTIA Linux+, or relevant cloud/Linux certifications preferred.
• Experience with Infrastructure as Code (Terraform, CloudFormation).
• Familiarity with CI/CD pipelines (Jenkins, GitLab CI/CD).
• Hands-on knowledge of containerization platforms (Docker, Kubernetes, OpenShift).
• Experience using MSP/PSA/RMM tools (ServiceNow, ConnectWise, SolarWinds, Datto, etc.).
• Capacity planning and cost optimization experience in hybrid or multi-cloud environments.