Infrastructure Engineer

Simplex is looking for smart, curious, and driven individuals to join our technology team. What will you be doing? Develop and maintain monitoring and deployment systems (Systems and Network) Triage and respond to issues Prepare and execute changes to the Linux environment Maintain and deploy servers and workstations Projects will be completed both independently and as part of a team when necessary This is an in-office position, with occasional onsite work at several colocation facilities in Chicago, Aurora, and New Jersey Infrequent evening/weekend work to allow for change execution outside of trading hours Other opportunities as assigned Skills and Experience 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. Eligibility for a discretionary bonus and additional compensation and benefits including health/dental/vision insurance and 401(k) contributions. Benefits The Office: stocked kitchen, daily breakfast and lunch stipends Tuition Reimbursement available for professional development Employee Discounts to gyms, national brands, and more Access to a building gym and full cafeteria (Federal Reserve building) Charity Match up to $2,000 a year Fun Events: in‑person happy hours, celebrations, game nights, etc. Simplex is an Equal Opportunity Employer #J-18808-Ljbffr