Full-Time · Quantitative Development

Infrastructure Engineer

Simplex Trading · Chicago · $125,000 · Posted Apr 10, 2026

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Our employees are our greatest asset. We have spent years building a team of talented, dedicated technologists, data-driven traders, and expert leaders with an emphasis on our core pillars: People, Process, Trading Edge, and Technology. Simplex is an in-office organization, helping to foster a collaborative and communicative culture.

Requirements

  • 3+ years of experience as a System Administrator, Linux Administrator, or similar
  • Thorough understanding of Linux (kernel, modules, filesystems) with special emphasis on the network stack, especially multicast, and OpenOnload
  • Experience working with Linux and standard tools (bash, grep, sed, awk) and scripting languages (Python, Perl, bash)
  • Understanding of Linux concepts (kernel, modules, memory allocation, filesystems)
  • Familiarity with common server technologies (IPMI, SNMP), or software (Nagios, Ansible, dnf/rpm, git)
  • Experience troubleshooting complex performance issues
  • Ability to lift and move heavy equipment (40-50 lb regularly)
  • Annual base salary ranges from $125,000 to $200,000, and is influenced by a number of factors, including qualifications and experience. This role is also eligible for an annual discretionary bonus, of which can be a significant portion of total compensation. This full time role is also eligible for other forms of compensation and benefits including health/dental/vision insurance, and 401(k) contributions.
Apply on Simplex Trading's site