Sr Systems / Networking Engineer / Woodridge, IL / Onsite

Kelly Services Inc.
Chicago, United States of America
2 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior

Job location

Chicago, United States of America

Tech stack

Microsoft Windows
Microsoft Online Services
Program Optimization
Data Centers
Linux
DevOps
Virtual Private Networks (VPN)
Network Layer
Linux kernel
Linux System Administration
Networking Basics
Routing
Performance Tuning
Ansible
Network Routers
Firewalls (Computer Science)
Low Latency
Bare Metal

Requirements

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)

Benefits & conditions

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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