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Freelance Linux System Engineer Jobs in Chicago, IL

Apex Fintech Solutions

Sr Systems Engineer

Chicago, IL · On-site

$107K - $147K/yr

In this role you will build, implement and maintain Linux based application systems in a developing DevOps culture. You will collaborate with other members of our team to ensure availability ...

IMC

Data Engineer - Infrastructure

Chicago, IL · On-site

$110K - $145K/yr

Tune Linux systems for I/O throughput and overall performance * Automate configuration and ... Partner with engineering teams to deliver reliable, well-architected data solutions with a focus on ...

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 ...

Next Step Systems

Senior Trading Systems Engineer

Chicago, IL · On-site

$107K - $147K/yr

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

IMC

Data Engineer - Infrastructure

Chicago, IL · On-site

$175K - $225K/yr

Tune Linux systems for I/O throughput and overall performance * Automate configuration and ... Partner with engineering teams to deliver reliable, well-architected data solutions with a focus on ...

IMC

Data Engineer - Infrastructure

Chicago, IL · On-site

$175K - $225K/yr

Tune Linux systems for I/O throughput and overall performance * Automate configuration and ... Partner with engineering teams to deliver reliable, well-architected data solutions with a focus on ...

Scalp Trade LLC

Trading Platform Engineer

Chicago, IL · On-site

$90K - $130K/yr

... Engineer to join our team. This role is pivotal to one of our core missions: developing cutting ... Administer the underlying Linux systems and troubleshoot connectivity between the Chicago office ...

Atria Group LLC

SQL DBA/Oracle DBA

Chicago, IL · On-site

$51.50 - $64.50/hr

Linux System Admin experience NICE TO HAVE: * Bachelor's Degree or higher in IT related field * Microsoft Certified Database Administrator (MCDBA) * Microsoft Certified Systems Engineer (MCSE ...

Geneva Trading

System Operations Engineer

Chicago, IL · On-site

$75K - $90K/yr

Role: System Operations Engineer Company: Geneva Trading (Chicago) About the Role As a System ... Familiarity with Linux (RHEL/Ubuntu/CentOS) administration. * AI Tools: Awareness of the ...

Infobahn SoftWorld Inc

Systems Engineer

Elgin, IL · On-site

The ideal candidate will have 1-3 years of experience in system-level design, requirements ... VMWARE or virtual machine skill, UNIX/Linux skills. Additional details: Top 3 soft skills: Team ...

Aquatic Capital Management

Systems Engineer

Chicago, IL · On-site

$150K - $300K/yr

Diagnose and resolve the hardest, most obscure system issues that others cannot get to the bottom ... Deep Unix/Linux expertise across multiple distributions; comfortable at every layer of the stack.

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Freelance Linux System Engineer information

See Chicago, IL salary details

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How much do freelance linux system engineer jobs pay per hour?

As of Aug 10, 2026, the average hourly pay for freelance linux system engineer in Chicago, IL is $61.53, according to ZipRecruiter salary data. Most workers in this role earn between $49.52 and $69.09 per hour, depending on experience, location, and employer.

What is the difference between Freelance Linux System Engineer vs Freelance Network Administrator?

AspectFreelance Linux System EngineerFreelance Network Administrator
CertificationsLinux certifications (e.g., LPIC, RHCE)Network certifications (e.g., CCNA, CompTIA Network+)
Work EnvironmentServer management, cloud platforms, Linux-based systemsNetwork infrastructure, routers, switches, firewalls
Industry UsageIT companies, hosting providers, cloud servicesTelecom, enterprise networks, data centers
Search & ComparisonFocus on Linux expertise, server setup, scriptingFocus on network setup, security, troubleshooting

While both roles involve technical skills and working with IT infrastructure, a Freelance Linux System Engineer specializes in Linux server environments, system configuration, and scripting. In contrast, a Freelance Network Administrator focuses on managing and securing network infrastructure. The choice depends on whether your expertise is more aligned with server management or network operations.

What are common challenges freelance Linux system engineers face when managing multiple client environments?

Freelance Linux System Engineers often juggle a variety of client systems, each with unique configurations, security requirements, and update schedules. This can make it challenging to keep track of different environments, ensure compatibility, and maintain consistent documentation. Effective time management, strong organizational skills, and setting up standardized processes for monitoring and patching are key to overcoming these challenges. Building clear communication channels with clients also helps in addressing urgent issues quickly and maintaining long-term relationships.

What skills and qualifications are needed to thrive as a freelance Linux system engineer?

To thrive as a Freelance Linux System Engineer, you need advanced knowledge of Linux operating systems, scripting languages (like Bash or Python), and strong troubleshooting abilities, typically supported by a degree in computer science or relevant certifications such as RHCE or CompTIA Linux+. Familiarity with configuration management tools (e.g., Ansible, Puppet), virtualization technologies, and cloud platforms is essential for managing diverse client environments. Excellent communication, time management, and client relationship skills help set top freelancers apart. These competencies ensure reliable system performance, efficient project delivery, and positive client interactions in a dynamic freelance setting.

What does a freelance Linux system engineer do?

A Freelance Linux System Engineer is an IT professional who works independently to design, implement, maintain, and troubleshoot Linux-based systems for clients. They handle tasks such as server setup, system monitoring, security hardening, automation, and providing technical support. Freelance engineers often work remotely or on a contract basis, helping businesses optimize their Linux infrastructure according to specific project needs.
What are the most commonly searched types of Linux System Engineer jobs in Chicago, IL? The most popular types of Linux System Engineer jobs in Chicago, IL are:
What are popular job titles related to Freelance Linux System Engineer jobs in Chicago, IL? For Freelance Linux System Engineer jobs in Chicago, IL, the most frequently searched job titles are:
What job categories do people searching Freelance Linux System Engineer jobs in Chicago, IL look for? The top searched job categories for Freelance Linux System Engineer jobs in Chicago, IL are:
Freelance Linux System Engineer jobs near you

Sr Systems Engineer

Apex Fintech Solutions

Chicago, IL • On-site

$107K - $147K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 27 days ago

Job description

WHO WE ARE
Apex Fintech Solutions (Apex) powers innovation and the future of digital wealth management by building tech-forward solutions that help simplify, automate, and facilitate access to financial markets for all. Our robust suite of fintech software enables us to support clients such as Stash, Betterment, SoFi, Webull, and eToro, amongst many others; collectively, Apex powers access to the stock market for over 22+ million end customers.
At Apex, we are changing how the securities industry operates by reinventing the status quo, which was manual, slow, and accessible only by the ultra-wealthy. We're digitizing and democratizing systems so that everyone has an opportunity to invest.
When you're at Apex, you drive this change. You're part of a global team with a clear vision: to be the trusted technology that powers the digital economy. Our offices in Austin, Dallas, Chicago, New York, Portland, Belfast, and Manila are home to over 1,000 employees.
Together, we're shaping the future of financial innovation. Embrace change. Solve big. Win together. And be G.R.E.A.T. - grit, results, empathy, accountability, and teamwork - with Apex.
We're proud to be recognized for the innovative work we do, the purpose-driven nature of our work, and the collaborative culture we've created. Here are just a few of the many awards we've recently received:
Best Places to Work
2026, 2025, 2024, 2023 - Presented by BuiltIn
WealthTech of the Year
2025 - Presented by US FinTech Awards
The World's Top 250 Fintech Companies
2024 - Presented by CNBC
ABOUT THIS ROLE
We have an exciting opening for a bright, talented and passionate Senior Systems Engineer to join our infrastructure team. In this role you will build, implement and maintain Linux based application systems in a developing DevOps culture. You will collaborate with other members of our team to ensure availability, performance, reliability, and security for our users and clients.
Duties/Responsibilities
  • Operate and continuously improve Linux systems engineering and administration.
  • Deployment and automation of applications via Salt & Ansible.
  • Troubleshoot, diagnose and resolve server events and user incidents relating to Linux systems.
  • Engage in detailed planning, change control and thorough testing to ensure performance, availability and stability.
  • Security related activities, system hardening, patching, vulnerability threat management and mitigation.
  • Manage and deploy system monitoring and management tools such as DataDog, LogicMonitor, Sentinel One, SNMP, etc.
  • Design and create automation to execute tasks and/or processes using scripting languages (Shell Scripting, Powershell, PERL, Python).
  • Create and maintain clear and accurate system documentation.
  • Ensure high performance and reliability of production systems by performing system monitoring and analysis, performance tuning, and troubleshooting system hardware, software, and applications.
  • Partner with Software Engineering teams to develop proactive maintenance plans, schedule maintenance windows, implement the changes, and follow-up.
  • Maintain non-proprietary application stack (Kubernetes, Docker, Kafka, MongoDB, RabbitMQ, Zookeeper).
  • Oversee infrastructure environment (VMWare, Storage, Backups, etc).

Education and/or Experience
  • Bachelor's degree in Computer Science or other technical field (or equivalent work experience) required; advanced degree preferred
  • 5+ years of experience in a similar role with experience in Cloud environments (i.e. cloud migration, cloud management, cloud architecture) and hand on Linux Engineering and Administration.
  • Experience with infrastructure related software, including VMWare, noSQL databases (e.g. MongoDB), containerization (e.g. docker), orchestration (e.g. Kubernetes), SAN storage and backup
  • Experience with code management tools such as Git.
  • Experience with TCP/IP networking troubleshooting and tools
  • Experience with configuration management tools (Ansible and SaltStack).
  • Experience writing and maintaining python/powershell/shell scripts/other scripts that automate tech operations.
  • Experience with Dell server hardware.

Required Skills/Abilities
  • Excellent organizational and follow-up skills with strong attention to detail.
  • Ability learn new skills to keep up with cutting edge technologies and evolving skill sets.
  • Ability to work in a team environment with much collaboration.
  • Ability to operate with a sense of purpose and urgency.
  • Be passionate about troubleshooting, debugging, and automation.
  • Must possess excellent verbal and written communication skills.
  • Expected to respond to alerts and outages; participate in periodic 24x7 on-call schedule.
  • Skill in providing top notch, responsive customer service to internal and external clients.

Work Environment
  • This job operates in a hybrid, office environment 3 days per week.
  • This job may require flexible shifts and days of the week including weekends and holidays, as needed.
  • This job may require travel, as needed (up to 10%).

#IT #mid-senior #full-time #LI-LN1 #APEX
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.
Our Rewards
We offer a robust package of employee perks and benefits, including healthcare benefits (medical, dental and vision, EAP), competitive PTO, 401k match, parental leave, and HSA contribution match. We also provide our employees with a paid subscription to the Calm app and offer generous external learning and tuition reimbursement benefits. At AFS , we offer a hybrid work schedule for most roles that allows employees to have the flexibility of working from home and one of our primary offices.
Salary Range
$115,000-$143,750
The annual base salary range for this position is noted above. Exact compensation offered may vary depending on job-related knowledge, skills, experience, and office location.
EEO Statement
Apex Fintech Solutions is an equal opportunity employer that does not discriminate on the basis of race, color, religion, sex (including pregnancy, sexual orientation, and gender identity), national origin, age, disability, veteran status, marital status, or any other protected characteristic. Our hiring practices ensure that all qualified applicants receive fair consideration without regard to these characteristics.
Disability Statement
Apex Fintech Solutions is committed to creating an inclusive and accessible workplace for all candidates, including those with disabilities. We are dedicated to ensuring equal employment opportunities and providing reasonable accommodations to qualified individuals with disabilities. If you require reasonable accommodations to participate in the application or interview process, please submit your request via the Candidate Accommodation Requests Form. We will work with you to provide the necessary accommodations to ensure your full participation in our hiring process.

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