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MMD Services

Sr. Linux System Engineer

MMD Services, Chicago, Illinois, United States, 60290

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This range is provided by MMD Services. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range

$140,000.00/yr - $165,000.00/yr Our client is a well-established financial services organization experiencing rapid growth. They are committed to delivering innovative, customer-centric solutions while maintaining a strong focus on operational excellence and technology advancement. With an expanding national footprint, the company offers a dynamic environment where talented professionals can contribute to meaningful transformation and long-term success. Position Summary

Architect, implement, and maintain office and production IT infrastructure. Lead in the troubleshooting, deployment, and lifecycle management of Linux systems (Ubuntu, Debian, RHEL). Implement and maintain configuration management and infrastructure-as-code practices using tools like Ansible and Terraform. Ensure high availability, scalability, and security of critical systems through clustering, redundancy, and proactive monitoring. Automate system provisioning, patching, and deployments to reduce manual overhead and increase reliability. Manage enterprise authentication, directory services, and access control solutions (Active Directory, LDAP, MFA). Optimize system performance by tuning kernels, storage, and networking for large-scale workloads. Partner with teams on containerization strategies and orchestration platforms (Docker, Kubernetes). Build and maintain monitoring, logging, and alerting solutions using Wazuh, Prometheus, Grafana, or similar platforms. Serve as an escalation point for advanced troubleshooting of Linux servers, networking, and security issues. Mentor junior engineers and share expertise through documentation, training, and peer collaboration. Evaluate emerging technologies and make recommendations for system improvements and adoption. 5+ years of experience administering enterprise-scale Linux systems (Ubuntu/Debian/RHEL preferred). Strong command-line expertise and advanced knowledge of shell scripting and automation (Bash, Python, Ruby). Deep understanding of core protocols and services: TCP/IP, DNS, HTTP/S, SMTP, IMAP, VPNs, and firewalls. Hands-on experience with virtualization and cloud platforms (VMware, AWS). Demonstrated expertise in system hardening, patch management, and backup/restore strategies. Proficiency with infrastructure automation frameworks (Terraform, Ansible, Puppet, or similar). Strong troubleshooting, diagnostic, and performance-tuning skills. Excellent communication skills and experience leading or mentoring technical teams. MMD Services Inc. is an equal opportunity employer. All applicants are considered for all positions without regard to race, religion, color, sex, gender, sexual orientation, pregnancy, age, national origin, ancestry, physical/mental disability, medical condition, military/veteran status, genetic information, marital status, ethnicity, alienage or any other protected classification, in accordance with applicable federal, state, and local laws. Seniorities

Mid-Senior level Employment type

Full-time Job function

Information Technology Industries

Financial Services and Credit Intermediation This description reflects the required responsibilities and qualifications for the role. It does not include extraneous job market data or unrelated notices.

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