Senior System Administrator

Your Job

Join Flint Hills Resources as a Senior Systems Administrator
, responsible for the full lifecycle of IT infrastructure that supports critical systems. In this dynamic role, you will manage a diverse technology landscape spanning on‑premises data centers, cloud platforms, and hybrid environments. You will take ownership of key applications and services within our IT environment, driving their deployment, configuration, monitoring, and ongoing optimization to ensure uninterrupted, secure, and high‑performance operation in a 24x7x365 mission‑critical setting.

Flint Hills Resources offers a rare environment where you'll work across the full technology spectrum. You will partner with plant operations, cybersecurity, and IT engineering to support and modernize a broad technology stack—from legacy on premises systems to cloud native services, containerization, virtualization, and enterprise storage—balancing uptime and safety with innovation. You'll advance our zero trust approach, drive infrastructure modernization for compliance and observability, and help shape the technology roadmap that strengthens Flint Hills Resources' long‑term resilience.

• Infrastructure Troubleshooting
  :
  Lead troubleshooting and resolution of complex technical issues across Windows/Linux servers, storage, virtualization, and cloud components
• Performance Monitoring & Capacity Planning
  :
  Monitor and optimize system performance with tools like PRTG and Tanium; establish baselines and perform capacity planning for growth and resilience
• Incident Response & Uptime Protection
  :
  Manage incident response processes to protect system availability and integrity
• Documentation & Compliance
  :
  Maintain detailed documentation of system/network configurations, processes, and architecture to ensure transparency and compliance
• Enterprise Storage Management
  :
  Support and maintain enterprise storage systems (e.g., Nimble Storage arrays) to ensure efficient, secure data accessibility
• Identity & Access Management (Active Directory):
  Manage Active Directory for user/group administration, authentication, and access control to support secure operations
• Cloud Infrastructure Management (AWS):
  Oversee AWS‑based infrastructure to extend and integrate cloud resources with on‑premises systems
• Containerization & Orchestration (Kubernetes):
  Deploy and manage containerized applications with Kubernetes to improve scalability and reliability
• Cross‑functional Collaboration & Support
  :
  Work with cross‑functional teams, vendors, and customers to provide on‑site and remote infrastructure support
• Strategic Multi‑Disciplinary Projects
  :
  Participate in strategic projects that span technologies, business units, and stakeholders

• Experience managing complex system, network, storage, and cloud infrastructure in 24x7x365 industrial or enterprise environments
• Experience in cloud infrastructure management, and comfortable integrating hybrid on‑premises and cloud ecosystems
• Willing and able to be on‑call as part of a rotation and respond promptly to emergencies
• Ability to travel up to 25% to support remote sites and project needs
• This role is not eligible for visa sponsorship

• Hands‑on experience in process control or industrial environments, especially petrochemical or manufacturing sectors
• Experience in server virtualization and container orchestration with Kubernetes
• Experience managing enterprise storage (Nimble or similar) and Active Directory environments

For this role, we anticipate paying $105,000 - $120,000 per year. This role is eligible for variable pay, issued as a monetary bonus or in another form.

At Koch companies, we are entrepreneurs. This means we openly challenge the status quo, find new ways to create value and get rewarded for our individual contributions. Any compensation range provided for a role is an estimate determined by available market data. The actual amount may be higher or lower than the range provided considering each candidate's knowledge, skills, abilities, and geographic…