Senior Linux Platform Engineer

Senior Linux Platform Engineer

Salary: open + bonus

Location: Chicago, IL / Kansas City, MO / New York, NY

Hybrid: 4 days onsite, 1 day remote

*We are unable to provide sponsorship for this role*

Qualifications

• 5+ years of experience in Linux systems administration and infrastructure/platform engineering.  
• Production experience managing Kubernetes, preferably in bare-metal or on-premises environments (e.g., with kubeadm, RKE, or OpenShift).  
• Hands-on experience with cloud platforms (AWS, Azure or Google Cloud Platform) in production environments.
• Strong scripting and automation skills in Python and Bash.  
• In-depth knowledge of Linux internals, kernel tuning, and performance diagnostics.  
• Hands-on experience with SaltStack (preferred), Puppet, or Ansible for configuration management.  
• Familiarity with observability tools such as Prometheus, Grafana, or Loki.  
• Solid understanding of core infrastructure protocols and services (TCP/IP, DNS, NTP/PTP, DHCP, etc.).  
• Experience managing CI/CD pipelines with tools such as Jenkins, GitLab, or similar.

Responsibilities

• Managing and improving our Linux-based infrastructure with a focus on performance, reliability, and scalability.  
• Designing, deploying, and maintaining on-premises Kubernetes clusters and containerized workloads.  
• Developing and maintaining system-level software, middleware, and APIs to support internal platforms and services.  
• Automating system workflows and infrastructure tasks using Python, Bash, and configuration management tools like SaltStack.  
• Building and maintaining RPM packages and internal software repositories. 
• Collaborating with Application Support (SRE), Development, and Security teams to ensure secure, automated CI/CD and platform integration.  
• Diagnosing and resolving complex system-level issues involving the OS, network, or container runtime.  
• Implementing hardened security configurations, including system hardening, secure communications, and identity/access integration. 
• Participating in an on-call rotation to support critical infrastructure services. 
• Documenting architectures, tools, and operational processes to support long-term maintainability.