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Freelance Open Source Developer Jobs in Chicago, IL

Join our infrastructure team as a Linux Systems Engineer, where your expertise in Python, Bash, and ... Build monitoring solutions using open-source tools. Implement infrastructure-as-code with Ansible.

Senior Java Developer

Chicago, IL

$59 - $75.25/hr

... open source, SOA, SaaS Soft skills: communication, presentation Communication and Presentation Problem solving Resourcefulness Team player Familiarity with Agile Qualifications Spring/Hibernate ...

DevOps (Agile/Scrum)

Northbrook, IL

$53.50 - $73.25/hr

Experience in DevOps (Agile/Scrum) using Jenkins, Git, Maven, JMeter and/or similar DevOps tool ... Basic understanding of open source development frameworks/principles (AngularJS, ReactJS ...

Senior AI Developer

Mettawa, IL · On-site

$62.50 - $82.50/hr

Collaborate with data scientists and ML engineers to prepare data and infrastructure for fine-tuning open-source or proprietary Large Language Models (LLMs) and optimizing them for performance and ...

Java Developer (Apache Camel)

Chicago, IL · On-site

$52.50 - $68/hr

At least 2 years of experience with open source ESB or any vendor product -Apache ServiceMix or RedHat JBoss Fuse is preferred At least 2 years of experience with Enterprise Integration patterns and ...

Java Developer (Apache Camel)

Chicago, IL · On-site

$52.50 - $68/hr

At least 2 years of experience with open source ESB or any vendor product -Apache ServiceMix or RedHat JBoss Fuse is preferred At least 2 years of experience with Enterprise Integration patterns and ...

Ability to build trusted executive relationships while aligning product, sales, marketing, engineering and operations teams * Insight into open source, Ubuntu, enterprise infrastructure, cloud, AI ...

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

... Open Source, and Relational Database (RDBS) technologiesDevelops web presentation logic and components using Angular/Typescript and/or Java Server Faces (JSF)/RichFacesDevelops REST-API services ...

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

... Open Source, and Relational Database (RDBS) technologiesDevelops web presentation logic and components using Angular/Typescript and/or Java Server Faces (JSF)/RichFacesDevelops REST-API services ...

Canonical is a leading provider of open source software and operating systems to the global ... Experience in Enterprise IT Programs, Process Improvement, and Software Engineering Project ...

Operating large-scale open-source storage, enterprise storage, tuning Linux systems for performance ... Partner with engineering teams to deliver reliable, well-architected data solutions with a focus on ...

Showing results 41-60

Freelance Open Source Developer information

See Chicago, IL salary details

$9

$23

$71

How much do freelance open source developer jobs pay per hour?

As of Aug 22, 2026, the average hourly pay for freelance open source developer in Chicago, IL is $23.66, according to ZipRecruiter salary data. Most workers in this role earn between $19.33 and $19.33 per hour, depending on experience, location, and employer.

What are the most commonly searched types of Open Source Developer jobs in Chicago, IL?

The most popular types of Open Source Developer jobs in Chicago, IL are:

Linux Systems Engineer

SG Cap Trading

Chicago, IL • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 9 days ago


Job description

SG is a boutique technology company founded in 2004. We use technology and big data to solve real world financial puzzles. Our competitive advantage is a true meritocracy minimizing politics and rewarding results. The foundation of our culture is continuous improvement.
Join our infrastructure team as a Linux Systems Engineer, where your expertise in Python, Bash, and automation will directly impact our growing systems. This role offers opportunities for hands-on learning, collaboration, and professional growth in open-source technologies and infrastructure-as-code.
Responsibilities:
Develop and maintain Python automation scripts for infrastructure management.
Build monitoring solutions using open-source tools.
Implement infrastructure-as-code with Ansible.
Troubleshoot Linux system issues and assist with hardware maintenance.
Set up desktops, laptops, and virtual machines (Linux, Windows, Mac).
Support SQL database management, including queries and table creation.
Design and document scalable infrastructure solutions.
Requirements:
Proficiency with Linux command line environments (Ubuntu/Debian, CentOS/RHEL)
Strong Python programming skills for automation.
Experience with Bash scripting and configuration management.
Familiarity with Git version control and code review processes.
Understanding of core Linux services (systemd, SSH, DNS, DHCP).
Basic networking and network monitoring knowledge.
What we offer:
Work-Life Balance - no excessive overtime
Mentorship from senior engineers
Experience with enterprise-level tools (VMware, Ansible, monitoring systems)
Opportunity to propose and lead technical projects
Competitive market-based pay with results based rewards
Solid benefit package including 401(k), medical, dental, vision, and more
Generous time off including holidays and vacation
Fully stocked break room, weekly lunches, volunteer opportunities, and more!
Authorization to work in the U.S. for this position is required. SG will not sponsor candidates for the position.