Systems Engineer / Mid-level / Linux / On-Site / Chicago
Chicago, Illinois
Onsite
Direct Hire
$100k - $125k
We’re partnering with a high-performance financial technology firm headquartered in downtown Chicago to find a Mid-Level Systems Engineer for their infrastructure team. This full-time, onsite position offers the chance to work on highly scalable, low-latency systems at the heart of a proprietary trading platform. Our client builds cutting-edge tech powering global financial markets—and they’re looking for engineers who thrive at the intersection of software and hardware.
Looking to solve deep, technical challenges in a performance-critical environment? This is your chance to work with some of the best systems and infrastructure minds in the industry. As a Systems Engineer, you’ll build and optimize the foundational components of a next-generation trading platform—think high-throughput messaging, kernel bypass, and performance monitoring at scale. If you love digging into the nuts and bolts of how software talks to hardware, and want to be surrounded by people who move fast, solve hard problems, and have fun doing it, this is where you’ll want to be. Expect top-tier comp, incredible benefits, and a team-first environment that prizes curiosity and ownership.
Required Skills & Experience
· 4-5 years professional experience writing system-level code in C++, C#, or similar
· Strong understanding of operating system fundamentals (Windows or Linux)
· Deep knowledge of networking protocols and internals
· Experience troubleshooting and resolving complex technical issues
· Proven ability to work independently in fast-paced environments
Desired Skills & Experience
· Experience with high-throughput and distributed systems
· Exposure to kernel bypass technologies (e.g., DPDK, RDMA)
· Background in performance tuning, garbage collection, and memory allocation
· Strong communication skills and collaborative mindset
· A genuine curiosity about how software interacts with hardware
What You Will Be Doing
Tech Breakdown
· 40% Systems-Level Software Development (C++/C#)
· 30% Distributed Infrastructure & Messaging Systems
· 30% Performance Monitoring & Troubleshooting
Daily Responsibilities
· 60% Hands-On Engineering & Debugging
· 20% Cross-Team Collaboration (DevOps & App Teams)
· 20% Independent Problem Solving & Optimization
The Offer
Looking to solve deep, technical challenges in a performance-critical environment? This is your chance to work with some of the best systems and infrastructure minds in the industry. As a Systems Engineer, you’ll build and optimize the foundational components of a next-generation trading platform—think high-throughput messaging, kernel bypass, and performance monitoring at scale. If you love digging into the nuts and bolts of how software talks to hardware, and want to be surrounded by people who move fast, solve hard problems, and have fun doing it, this is where you’ll want to be. Expect top-tier comp, incredible benefits, and a team-first environment that prizes curiosity and ownership.
Required Skills & Experience
· 4-5 years professional experience writing system-level code in C++, C#, or similar
· Strong understanding of operating system fundamentals (Windows or Linux)
· Deep knowledge of networking protocols and internals
· Experience troubleshooting and resolving complex technical issues
· Proven ability to work independently in fast-paced environments
Desired Skills & Experience
· Experience with high-throughput and distributed systems
· Exposure to kernel bypass technologies (e.g., DPDK, RDMA)
· Background in performance tuning, garbage collection, and memory allocation
· Strong communication skills and collaborative mindset
· A genuine curiosity about how software interacts with hardware
What You Will Be Doing
Tech Breakdown
· 40% Systems-Level Software Development (C++/C#)
· 30% Distributed Infrastructure & Messaging Systems
· 30% Performance Monitoring & Troubleshooting
Daily Responsibilities
· 60% Hands-On Engineering & Debugging
· 20% Cross-Team Collaboration (DevOps & App Teams)
· 20% Independent Problem Solving & Optimization
The Offer
- Bonus eligible
- Medical, Dental, and Vision Insurance
- Vacation Time
- Stock Options