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Unix Linux Systems Engineer Jobs in Illinois (NOW HIRING)

CYNET SYSTEMS

Java Technical Architect

Chicago, IL · On-site

$60 - $65/hr

Experience with UNIX/Linux-based systems. * Experience with Spring Batch. Responsibilities: * Lead ... DevOps, Cloud Platform (OCP, Kubernetes), and modern CI/CD developer tool kit (STS/IntelliJ ...

GRVTY

Mid-Level Systems Engineer

Virginia, IL

$150K - $200K/yr

The Systems Engineer is responsible the applications infrastructure across all networks. Technical ... Strong working knowledge of Linux/Unix, version control (Git), and scripting languages (Python ...

Next Step Systems

Trade Desk Operations Engineer

Chicago, IL · On-site

$71K - $96K/yr

Responsibilities: - Perform daily procedures relevant to the trading system for equity and futures ... Chicago IL Jobs, Trade Desk Operations Engineer, UNIX, Linux, Windows, Perl, Python, Ruby, SQL ...

QualiTest

Site Reliability Engineer

Riverwoods, IL · On-site

$59.25 - $78.75/hr

Python, Go, shell scripting (Unix/Linux), Java. * Experience in CI/CD pipelines preferably Jenkins ... Good experience in Systems Observability and APM tools, preferably Datadog. * Strong ability to ...

Next Step Systems

Senior Systems Engineer

Chicago, IL · On-site

$107K - $147K/yr

Keywords: Chicago IL Jobs, Senior Systems Engineer, Linux Servers, Scripting, Automation Tools, TCP/IP, Networking Concepts, Trading Infrastructure, Financial, Software Engineer, Architect ...

CDK

Staff Software Engineer

Hoffman Estates, IL · On-site +1

$150K - $185K/yr

Must be an expert in Unix/Linux systems programming including I/O, networking, file systems and database access, and shell scripting * In-depth knowledge of .NET infrastructure. * Expert level ...

P2P

Trade Systems Engineer

Chicago, IL · On-site

$130K - $250K/yr

Knowledge of Linux/Unix environments What you'll be working on * Maintaining the health and ... trading eco-system * Responding to support requests from our traders and software engineers

SonSoft

UNIX Systems Adminstrator

Naperville, IL · On-site

UNIX Systems Administrator Sonsoft, Inc. is a USA based corporation duly organized under the laws ... Linux (PAM, syslog, auditd) - IBM / AIX (authentication, syslog, audit) - Solaris (PAM, syslog ...

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Unix Linux Systems Engineer information

What is a Unix Linux systems engineer?

Unix Linux Systems Engineers are IT professionals responsible for designing, implementing, maintaining, and troubleshooting Unix and Linux-based operating systems within an organization. They ensure server reliability, security, and performance, often managing system upgrades, patching, and user permissions. Their expertise is crucial for supporting enterprise applications, automating tasks through scripting, and maintaining system backups and disaster recovery processes. These engineers frequently work with other IT teams to ensure seamless integration between hardware, software, and network resources.

What are the key skills and qualifications needed to thrive as a Unix Linux systems engineer?

To thrive as a Unix/Linux Systems Engineer, you need deep expertise in Unix/Linux operating systems, shell scripting, and system administration, often supported by a degree in computer science or related certifications such as CompTIA Linux+ or Red Hat Certified Engineer (RHCE). Familiarity with configuration management tools (like Ansible or Puppet), virtualization platforms, and monitoring systems is commonly required. Strong problem-solving abilities, attention to detail, and effective communication are standout soft skills in this role. These skills ensure the reliability, security, and optimal performance of critical IT infrastructure in diverse business environments.

What are some common challenges faced by Unix Linux systems engineers in managing large-scale server environments?

Unix Linux Systems Engineers often encounter challenges such as ensuring system uptime, managing configuration consistency across numerous servers, and applying security patches without disrupting critical services. Automating repetitive tasks and monitoring system performance are essential skills to efficiently handle scale and prevent issues before they impact users. Collaborating closely with network, security, and application teams is crucial for seamless operations and resolving complex incidents quickly.

What is the difference between Unix Linux Systems Engineer vs Network Administrator?

AspectUnix Linux Systems EngineerNetwork Administrator
Primary FocusDesign, implement, and maintain Unix/Linux systems and infrastructureManage and support network hardware, configurations, and connectivity
CertificationsLinux+, RHCE, CompTIA Server+CCNA, Network+
Work EnvironmentData centers, server rooms, cloud environmentsOffice networks, data centers, enterprise environments
Common TasksServer setup, scripting, system optimizationNetwork setup, troubleshooting, security

The Unix Linux Systems Engineer primarily focuses on managing and optimizing Unix/Linux servers and systems, while the Network Administrator handles network infrastructure and connectivity. Both roles require certifications and work in similar environments, but their core responsibilities differ significantly.

What cities in Illinois are hiring for Unix Linux Systems Engineer jobs?

Cities in Illinois with the most Unix Linux Systems Engineer job openings:

Infographic showing various Unix Linux Systems Engineer job openings in Illinois as of August 2026, with employment types broken down into 76% Full Time, and 24% Contract. Highlights an 89% In-person, and 11% Remote job distribution.

Junior Trading Systems Engineer

Chicago, IL • On-site

Hudson River Trading
See more jobs at Hudson River Tradingexternal

Full-time

Re-posted 19 days ago

Job description

Hudson River Trading (HRT) is seeking a Junior Trading Systems Engineer to join our growing Trading Systems Infrastructure team. This team designs, builds, and maintains the infrastructure that powers our global trading, and is responsible for ensuring optimal performance and uptime of the ultra low-latency operating systems, automation software, and development tools that allow our trading strategies to run worldwide 24/7.
As a Junior Trading Systems Engineer, you'll work on projects focusing on our real-time production trading environment and tackle problems that require high availability, high throughput, and ultra low-latency solutions. The ideal candidate possesses a passion for coding and automation, is eager to learn new skills to help build an elegant stack, and has the ability to handle challenging technical issues within a dynamic and fast-paced environment.
Responsibilities
  • Manage worldwide Linux-based trading infrastructure by contributing to the planning and execution of complex technical projects and tasks
  • Troubleshoot hardware and software issues across the stack
  • Plan and implement system installations and upgrades
  • Deploy, configure, and test internal and external applications
  • Improve documentation and reduce technical debt
  • Benchmark the performance of the trading stack, working with subject matter experts across the organization
  • Join an on-call rotation schedule to cover trading hours and weekend shifts, as needed

Qualifications
  • 2+ years of relevant experience managing Linux systems: you can install packages, manage users, control services, and know where to look for system logs, and you understand TCP/IP networking, default gateways, and how to debug connectivity problems
  • Familiarity installing and configuring Linux systems, from hardware and networking to kernel to applications
  • Knowledge of Debian/Ubuntu is desirable
  • Basic familiarity with configuration management tools, particularly SaltStack - some knowledge of Puppet, Ansible, Chef, or CFEngine is also desirable
  • Project Management Skills
  • Proven programming experience: you don't just know what big-O notation is, you've also built working software and can explain and defend your design
  • Basic shell (bash) scripting experience
  • Experience using JIRA
  • Strong cross-functional communication and organization skills
  • Experience with production systems, as well as some cloud experience in AWS or GCP, is desirable but not required

The estimated base salary range for this position is 120,000 to 160,000 USD per year (or local equivalent). The base pay offered may vary depending on multiple individualized factors, including location, job-related knowledge, skills, and experience. This role will also be eligible for discretionary performance-based bonuses and a competitive benefits package.
Culture
Hudson River Trading (HRT) brings a scientific approach to trading financial products. We have built one of the world's most sophisticated computing environments for research and development. Our researchers are at the forefront of innovation in the world of algorithmic trading.
At HRT we welcome a variety of expertise: mathematics and computer science, physics and engineering, media and tech. We're a community of self-starters who are motivated by the excitement of being at the cutting edge of automation in every part of our organization-from trading, to business operations, to recruiting and beyond. We value openness and transparency, and celebrate great ideas from HRT veterans and new hires alike. At HRT we're friends and colleagues - whether we are sharing a meal, playing the latest board game, or writing elegant code. We embrace a culture of togetherness that extends far beyond the walls of our office.
Feel like you belong at HRT? Our goal is to find the best people and bring them together to do great work in a place where everyone is valued. HRT is proud of our diverse staff; we have offices all over the globe and benefit from our varied and unique perspectives. HRT is an equal opportunity employer; so whoever you are we'd love to get to know you.
Please be advised: Use of AI tools during interviews or assessments is strictly prohibited, unless otherwise instructed or agreed upon. We employ various methods to evaluate the authenticity of candidate responses. If we determine that AI assistance was used during any stage of the hiring process, we reserve the right to immediately disqualify your candidacy or rescind any job offers extended.

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