Senior Linux Systems Administrator

Full job description

Convergent Science is a rapidly growing computational fluid dynamics (CFD) company. Our flagship product, CONVERGE, is a state-of-the-art CFD software suite used by industry and research organizations around the world to simulate turbulent reacting flows in complex geometries. Convergent Science is headquartered in Madison, Wisconsin, USA, with additional offices in the USA, Europe, and India.

We are seeking a Senior Linux Systems Administrator for our headquarters in Madison, WI. While this role has a wide variety of duties, the primary responsibility will be provisioning and maintaining various Linux based servers and other infrastructure across our headquarters in Madison, as well as our 3 U.S. offices and 2 branch offices abroad.

The Madison office also hosts an HPC cluster of roughly 10,000 cores with a mix of CPUs and networking, along with over a petabyte of various storage systems. We don’t expect any HPC system administration experience, but this is a great opportunity to expand your IT experience in a fast-growing, ever-evolving industry where we support some of the most cutting‑edge research and software development in HPC.

The Senior Linux Systems Administrator will be joining a team of four other system administrators, including the IT Manager, to whom this position will report. All IT personnel are located in the Madison office, and we’re looking for a candidate who will hit the ground running, fully supported by your fellow system admins in a team atmosphere. The ideal candidate will be able to take direction from management, but also be able to look at our environment, suggest changes, and take the initiative to see them through independently.

• Linux system administration: provisioning new servers and maintaining, updating, and troubleshooting existing servers
• Network administration: setting up new switches, VLANs, routing, and VPNs, and troubleshooting networking issues
• Network File Storage administration
• Maintenance and expansion of our 10,000 core cluster
• Administration of our backup scheme
• Support and troubleshooting of our Linux desktops.

• Various switch operating systems:
  Mikrotik, Quanta, Dell, HP
• DHCP, DNS, routing, subnets, VLANs, VPN
• RHEL & derivatives (Rocky, CentOS, etc), Ubuntu
• Windows and Windows Server
• FreeIPA, LDAP, Active Directory
• NFS, Samba, BeeGFS
• VMWare, Proxmox
• bash, python, perl, PHP scripting
• Ansible, Rundeck, Gitlab
• Slurm, MPI’s (IntelMPI, HPC-X, mpich, openmpi).

We don’t expect candidates to have knowledge of all these technologies, but some familiarity with Linux, Windows, and general networking is required.

• A 2-year or 4-year degree is preferred
• 5 years experience
• Some heavy lifting (