Linux Systems Administrator; Part-time

Position: Linux Systems Administrator (Part-time)
Location: St. Louis

Savi Gurus is a consulting firm that connects experienced technology professionals with clients who need specialized expertise on a flexible basis. We are currently seeking a Senior Linux Systems Administrator to support one of our clients in a part-time, fully remote capacity. In this role you will help maintain and optimize a production Linux environment that powers a high-traffic, subscription-based web platform.

Position Overview We are looking for an experienced Senior Linux Systems Administrator to manage and optimize a production Linux environment hosted on dedicated cloud infrastructure. This role is responsible for maintaining system reliability, troubleshooting outages and performance issues, provisioning new servers, maintaining infrastructure automation, and ensuring strong operational and security practices across the environment.

Employer:

Savi Gurus (engaged on behalf of one of our clients)
Type:
Part-time, fractional / retainer engagement

Hours:

Approximately 15 hours per week

Location:

Fully remote (U.S. preferred, but open to other time zones with team overlap)
Compensation: DOE (commensurate with experience)
Team:
You will be the primary system administrator, working closely with the client's technical lead.

Responsibilities Linux Infrastructure Administration Administer and maintain multiple Debian-based Linux production systems

Provision and configure new dedicated Linux servers

Perform OS updates, patching, package management, and system hardening

Maintain system uptime, stability, and operational health

Incident Response & On-Call Support Participate in on-call support for critical production outages and major performance incidents

Respond to high-priority infrastructure issues in a timely manner

Investigate outages, instability, and degraded application performance

Perform root cause analysis and implement long-term corrective actions

Troubleshoot CPU, memory, disk I/O, networking, and service bottlenecks

Service Administration & Performance Install, configure, maintain, and optimize Apache, PHP / PHP-FPM, MySQL, Redis, Elasticsearch, and cron jobs / scheduled services. Responsibilities include performance tuning, service troubleshooting, capacity planning, and stability improvements.

Infrastructure Automation Maintain and improve Ansible-based infrastructure deployments

Automate provisioning and repeatable operational tasks

Standardize system configuration and deployment practices

Security & Access Management Maintain Linux user accounts, permissions, and access policies

Manage SSH access and authentication controls

Investigate suspicious activity and possible security threats

Apply security updates and maintain server hardening standards

Networking & Systems Operations Maintain VLAN-based networking configurations

Troubleshoot DNS, connectivity, and network-related issues

Maintain SSL/TLS certificates and secure communications

Required Qualifications Strong experience administering Debian/Ubuntu Linux systems in production

Experience supporting Apache + PHP-FPM production environments

MySQL administration and troubleshooting experience

Experience with Redis and Elasticsearch Experience using Ansible

Experience with Cloudflare Strong Linux troubleshooting and incident response skills

Familiarity with Bash/shell scripting, cron jobs, VLANs, DNS, SSH, and Linux permissions and access control

On-Call Expectations Availability to respond to critical outages and severe performance degradation

Comfortable troubleshooting live production issues

Ability to diagnose and remediate problems independently

Focus on both immediate mitigation and long-term prevention

Ideal Candidate You've managed real production Linux systems and are comfortable being responsible for uptime. You have experience troubleshooting complex infrastructure problems under pressure and understand how Apache, PHP-FPM, MySQL, Redis, and Elasticsearch interact in a production web stack. You thrive in a flexible, part-time arrangement and can work independently while collaborating remotely with a small technical team.

Savi Gurus is an equal opportunity organization. We welcome applicants of all backgrounds.

To apply , please submit your resume and a brief summary of relevant production Linux experience.e
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