Sr Systems / Networking Engineer / Woodridge, IL / Onsite

A rapidly growing, technology-focused trading firm is looking to add a hands-on Systems Engineer to its infrastructure team in Woodridge, IL. This is a full-time, onsite role centered on Linux systems, physical infrastructure, and network engineering, supporting a multi-data center environment. The team operates close to the hardware, focusing on performance, reliability, and scalability rather than cloud-first solutions.

This is an opportunity to join a lean, evolving team where this role represents an expansion into deeper systems + networking capability. The environment is highly dynamic, with active infrastructure redesign efforts underway, particularly across networking. The ideal candidate is a mid-level engineer who is strong in Linux systems, has exposure to networking, and wants to deepen their skillset in a trading or low-latency environment. This is not a purely cloud or DevOps role, it's built for someone who enjoys working directly with servers, switches, and system-level optimization. Required Skills & Experience

• Strong hands-on experience with Linux systems administration (production environments)
• Experience working with on-prem / bare metal infrastructure (not cloud-only)
• Solid understanding of networking fundamentals (routing, switching, troubleshooting)
• Experience operating in data center environments or with physical hardware
• Ability to troubleshoot both system and network layers
• Comfortable in fast-paced, evolving environments

Desired Skills & Experience

• Experience in trading, financial services, or low-latency environments (strongly preferred)
• Exposure to Linux kernel-level tuning or system optimization
• Hands-on work with switches, routers, firewalls, or VPNs
• Experience with Ansible or similar automation tools
• Familiarity with multi-data center infrastructure

What You Will Be Doing Tech Breakdown

• 65% Linux Systems (bare metal, performance tuning)
• 25% Networking (routing, switching, redesign support)
• 10% Windows / Microsoft ecosystem (M365, identity)

Daily Responsibilities

• 70% Hands-On Engineering (systems + infrastructure)
• 20% Project Work (network redesign, scaling initiatives)
• 10% Team Collaboration

The Offer You will receive the following benefits:

• Competitive base salary
• Medical, Dental, and Vision Insurance
• Paid Vacation Time
• Opportunity to gain specialized experience in trading infrastructure

Applicants must be authorized to work in the U.S. on a full-time basis now and in the future.

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