Senior Systems Administrator

About LiquidPiston LiquidPiston is a technology-driven engineering company developing advanced rotary engines based on a new thermodynamic cycle.

Our team of ~40 engineers and professionals is solving some of the most challenging problems in modern propulsion.

We’re seeking a Network Administrator to manage and enhance our IT infrastructure, ensuring secure, reliable connectivity across our hybrid Windows and Linux environment.

This is a hands-on role for someone who enjoys working independently, supporting a high-performing engineering team, and building resilient systems from the ground up.

This position will operate as a one-person IT shop, responsible for all aspects of IT and network management across the organization.

Key Responsibilities Design, implement, and maintain a secure and scalable network infrastructure, including routers, switches, firewalls, and wireless access points Monitor network performance, troubleshoot connectivity issues, and optimize reliability and uptime Manage and support Windows and Linux servers, virtual environments, and user workstations Oversee Active Directory, DNS, DHCP, and Microsoft 365 administration Collaborate with leadership to identify, procure, and deploy IT and networking assets Ensure compliance with cybersecurity frameworks, including NIST 800-171 and CMMC 2.0 Implement and maintain network segmentation, VPNs, and encryption protocols Manage data backup, disaster recovery, and endpoint protection systems Support licensing and connectivity for engineering tools such as SolidWorks, ANSYS, and MATLAB Develop automation scripts (e.g., Bash, PowerShell, or Ansible) to improve system efficiency Required Qualifications Bachelor’s degree in Information Technology, Computer Science, or a related field (MS preferred) 5+ years of experience managing enterprise or small-company IT / network infrastructure Strong proficiency in both Linux and Windows Server environments In-depth understanding of TCP / IP, VLANs, VPNs, firewalls, routing, and switching Hands-on experience with Microsoft 365, Active Directory, Exchange, DNS, and SSO Familiarity with NIST 800-171 / CMMC 2.0 compliance requirements Proven ability to work independently as a one-person IT department Excellent troubleshooting, communication, and documentation skills Preferred Qualifications Networking certifications such as CCNA, CompTIA Network+, or equivalent Experience managing High-Performance Computing (HPC) or lab network environments Familiarity with containerization (Docker, Kubernetes) or DevOps workflows Scripting experience (Python, Bash, PowerShell, or Ansible) for automation and system management Knowledge of MySQL or relational database management Benefits & Perks Flexible PTO :

• We value work-life balance and encourage time to rest and recharge.

Health & Wellness :

Equity Participation :