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Freelance Open Source Developer Jobs in Chicago, IL

Sonsoft Inc

Java developer with ( 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 ... Experience and understanding of in Production support and performance engineering. Qualifications ...

IMC

Data Engineer - Infrastructure

Chicago, IL

$110K - $145K/yr

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 ...

Canonical

Telco Cloud Field Engineer

Chicago, IL · On-site +1

This transformation is driven by open source software, cloud computing and the move to VNF / CNF ... As part of the Canonical Field Engineering organization, you will lead customers through the design ...

Jobsbridge

Java Front End Developer

Chicago, IL

Be it core Java, full-stack Java, Web/UI designers, Big Data or Cloud or Mobility developers ... with Open Source tools and technologies is REQUIRED. Expertise in use case analysis and ...

SG Cap Trading

Linux Systems Engineer

Chicago, IL · On-site

Linux Systems Engineer ID: 1018 Location: Chicago, IL More about this job > Description SG is a ... Build monitoring solutions using open-source tools. Implement infrastructure-as-code with Ansible.

Canonical

Senior Software Engineer - MAAS

Chicago, IL

$126K - $166K/yr

Canonical is a leading provider of open source software and operating systems to the global ... AI, engineering innovation, and IoT. Our customers include the world's leading public cloud and ...

Tror AI for everyone

AI Developer

Mettawa, IL · On-site

$80/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 ...

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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:

Freelance Open Source Developer jobs near you

Core Java Developer (Apache Camel)

Sonsoft Inc

Chicago, IL • On-site

Full-time

Re-posted 28 days ago

Job description

Company Description

SonSoft is an IT Staffing and consulting firm and duly organized under the laws of the Commonwealth of Georgia. We are growing at a steady pace specializing in the fields of Software Development, Software Consultancy and Information Technology Enabled Services.

Job Description
  • At least 2 years of Core Java/Spring experience
  • Expert knowledge and strong hands on experience with integration design & implementation using Apache Camel framework.
  • 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 SOA patterns.
  • Strong Message Queuing solution knowledge- IBM MQ experience is needed
  • At least 2 years of experience with Fault Handling, Compensation Handling and Transactional Boundaries.
  • At least 2 years of experience with Restful API design, development and documentation.
  • Solid understanding of various container architecture like Apache Tomcat, Red hat Fuse, EAP, WebSphere etc.
  • Knowledge on Gradle build scripting and continuous integration using TeamCity.
  • In depth knowledge on various open source libraries needed for a standard integration project.
  • At least 1 year experience with test driven development
  • Ability to break up complex design into phased approaches.
  • At least 2 years of experience in translating functional/non-functional requirements to system requirements.
  • At least 2 years of experience in software development life cycle.
  • Experience and understanding of in Production support and performance engineering.
Qualifications
  • Bachelor's degree or foreign equivalent required from an accredited institution. Will also consider three years of progressive experience in the specialty in lieu of every year of education.
  • At least 2 years of experience with Information Technology.
Additional Information

** U.S. citizens and those authorized to work in the U.S. are encouraged to apply. We are unable to sponsor at this time.

Note:-

  1. This is a Full Time job opportunity for you
  2. Only US Citizen, Green Card Holder, GC-EAD, H4-EAD, L2-EAD can apply.
  3. No OPT-EAD, TN Visa & H1-B consultans please.
  4. Please mention your Visa Status in your email or resume.
Sonsoft logo

About Sonsoft

Sourced by ZipRecruiter

Sonsoft , Inc. is a USA based corporation duly organized under the laws of the Commonwealth of Georgia. Sonsoft Inc. is growing at a steady pace specializing in the fields of Software Development, Software Consultancy and Information Technology Enabled Services.

Industry

It services

Company size

51 - 200 Employees

Headquarters location

Alpharetta, GA, US

Year founded

2007

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