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Linux Kernel Developer Jobs in Chicago, IL (NOW HIRING)

Simplex Trading

Infrastructure Engineer

Chicago, IL

$110K - $145K/yr

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 ...

Geneva Trading

Mid-level Systems Engineer

Chicago, IL · On-site

$100K - $150K/yr

Geneva Trading is seeking a Mid-Level System Engineer to join our Core Infrastructure team in ... Advanced Linux: Deep knowledge of the Linux kernel, system internals, and performance profiling ...

Old Mission

C++ Software Engineer

Chicago, IL · On-site +1

$175K - $300K/yr

In-depth knowledge of the Linux kernel, systems programming * A passion for solving challenging problems * Strong systems knowledge and prefer some experience in developing low latency systems

Geneva Trading

Junior Software Engineer

Chicago, IL · On-site

$80K - $130K/yr

This role is for the curious mind-the engineer who doesn't just want to write a strategy but wants to understand exactly how the Linux kernel handles every packet that strategy sends. Core ...

Simplex Trading

Infrastructure Engineer

Chicago, IL · On-site

$125K - $200K/yr

Thorough understanding of Linux (kernel, modules, filesystems) with special emphasis on the network ... Infrastructure Engineer pay range $125,000-$200,000 USD Why us? Founded in Chicago in 2004, Simplex ...

Old Mission

C++ Software Engineer

Chicago, IL · On-site

$175K - $300K/yr

In-depth knowledge of the Linux kernel, systems programming * A passion for solving challenging problems * Strong systems knowledge and prefer some experience in developing low latency systems

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Linux Kernel Developer information

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$104.1K

$153.7K

$181.4K

How much do linux kernel developer jobs pay per year?

As of Jun 6, 2026, the average yearly pay for linux kernel developer in Chicago, IL is $153,677.00, according to ZipRecruiter salary data. Most workers in this role earn between $140,700.00 and $170,100.00 per year, depending on experience, location, and employer.

What are some common challenges Linux Kernel Developers face when integrating new features or patches?

Linux Kernel Developers often encounter challenges such as ensuring compatibility with a wide range of hardware architectures and maintaining stability across diverse distributions. Integrating new features or patches requires rigorous code review, thorough testing, and clear communication with the broader open-source community. Developers must also keep up with the kernel's fast-paced development cycles and adhere to strict coding standards, which can be demanding but offers significant opportunities for learning and professional growth.

What Does a Linux Kernel Developer Do?

A Linux kernel developer uses computer code to create a program that functions as the core of a computer operating system. Your duties can include creating kernels for open-source operating systems for desktop computers, laptops, phones, and tablets. You can also develop programs for embedded systems for routers, smart devices, or automated machinery. Linux uses C programming languages, so you often write code in C and C++. In addition to your coding responsibilities, you also test and debug your programs. Your employer may ask you to develop applications, drivers, and other tools to use with your kernel.

What does a Linux Kernel Developer do?

A Linux Kernel Developer is responsible for designing, developing, and maintaining the core part of the Linux operating system known as the kernel. Their work involves writing and reviewing code, debugging issues, implementing new features, and ensuring the kernel remains efficient and secure. They also collaborate with the open-source community to contribute patches and updates. Linux Kernel Developers play a crucial role in supporting hardware compatibility and system performance across various devices.

What are the key skills and qualifications needed to thrive as a Linux Kernel Developer, and why are they important?

To thrive as a Linux Kernel Developer, you need deep knowledge of C programming, operating system concepts, and experience with kernel development, often supported by a degree in computer science or related fields. Familiarity with tools such as Git, GDB, build systems, and patch submission processes, as well as experience contributing to open-source projects, is typically required. Strong problem-solving, attention to detail, and effective communication are critical soft skills for collaborating within the open-source community. These skills ensure high-quality code contributions, efficient troubleshooting, and successful integration with the broader Linux ecosystem.

What is the difference between Linux Kernel Developer vs Linux Device Driver Developer?

AspectLinux Kernel DeveloperLinux Device Driver Developer
Required CredentialsProficiency in C, Linux kernel development experience, often a degree in Computer Science or related fieldSimilar credentials, with focus on device-specific programming and hardware knowledge
Work EnvironmentDeveloping and maintaining core kernel components, often in a Linux environmentWriting and debugging drivers for specific hardware devices within Linux
Employer & Industry UsageTech companies, open-source projects, hardware manufacturersHardware manufacturers, embedded systems, specialized device companies

While both roles require strong C programming skills and Linux knowledge, Linux Kernel Developers focus on core kernel development, whereas Linux Device Driver Developers specialize in creating drivers for hardware components. The roles often overlap but differ in scope and focus within the Linux ecosystem.

More about Linux Kernel Developer jobs
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Linux Kernel Developer jobs near you
Software Developer - FPGA Systems

Software Developer - FPGA Systems

CultureFit

Chicago, IL • On-site

Other

Posted 8 days ago

Job description

Job Description Software Developer (FPGA/Systems) We are seeking a highly skilled Software Developer to join our Hardware Engineering team. This role sits at the intersection of hardware and software, acting as a critical link between custom FPGA-based systems and our internal trading platform. You will design and build ultra-low-latency solutions, including high-performance APIs, kernel drivers, and diagnostic tooling, to support and enhance automated trading capabilities.

The successful candidate will be a self-starter, have strong sense of ownership and be driven to provide technical and intellectual solutions to business problems. Responsibilities: Designing, developing, and maintaining high-performance APIs in C++ to integrate FPGA hardware with internal trading systems Developing and optimizing Linux kernel drivers with a focus on PCIe communication, DMA transfers, interrupt handling, and memory management to achieve ultra low-latency Partnering with FPGA engineers to support unit testing, lab bring-up, and validation of SystemVerilog/Verilog designs using software-driven test frameworks Building and maintaining diagnostic tools and automation utilities in Python and C++ for FPGA configuration, monitoring, deployment, and troubleshooting Conduct in-depth analysis of trading system performance using host logs, packet captures (PCAPs), and custom telemetry data to identify bottlenecks and optimize throughput and latency Implementing, tuning, and optimizing TCP/UDP/IP stacks and Ethernet-based communication for high frequency trading (HFT) environments Skills and Experience: 5-7+ years of relevant experience Experience in an HFT or proprietary trading environment preferred Expert level proficiency in C++ 14/17 for systems programming; strong Python skills for automation and tooling Advanced understanding of TCP/IP, UDP, Ethernet protocols, and the OSI model within low-latency systems Strong knowledge of PCIe protocols and DMA engine architecture Deep understanding of the Linux kernel, including driver development, kernel internals, interrupt handling, and kernel-bypass techniques Experience with low-level system design concepts such as cache coherency, NUMA architectures, and memory-mapped I/O Familiarity with SystemVerilog or Verilog, including the ability to read and interpret RTL Experience with network capture and analysis tools (e.g., Wireshark, Corvil) and hardware debugging tools Exposure to FPGA development toolchains such as Xilinx Vivado or Intel Quartus Ability to work in a collaborative environment Excellent written and verbal communication skills

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