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Freelance Java Backend Developer Jobs in Chicago, IL

Apex Informatics

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

Core Java Developer Work Location: Chicago, IL (Hybrid Role) Must have skills: AWS, Microservices ... Identify and address performance bottlenecks in both front-end and back-end components, ensuring ...

Apex Informatics

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

Identify and address performance bottlenecks in both front-end and back-end components, ensuring ... other developers to translate requirements into technical solutions. Participate in agile ...

Deloitte

Senior Java Developer

Chicago, IL

$59 - $75.25/hr

Architect and implement backend solutions using Java/J2EE and Spring Boot for distributed claims ... Mentor Java developers and enforce best practices in secure coding and microservices architecture.

New

Laksan Technologies

Java Fullstack Developer

Chicago, IL · On-site

$54 - $69.75/hr

Java Fullstack Developer Location: Chicago, Illinois Job Type: C2C Onsite Long-term We are looking ... The ideal candidate will have strong expertise in Java-based back-end development and React-based ...

COGENT Infotech

Senior Java Developer

Chicago, IL · On-site

$59 - $75.25/hr

Responsibilities : • Design, develop, and maintain scalable enterprise applications using Java as the core programming language. • Build and support back-end services using Spring Boot, Spring ...

ELEKS

Senior Scala Developer

Chicago, IL · On-site

$124K - $161K/yr

Responsibilities : • Design, develop, and maintain scalable backend services using Scala and Java ... cross-functional engineering teams on solution design and implementation • Participate in ...

ELEKS

Lead Java Developer

Chicago, IL · On-site

ELEKS is a software development and engineering company seeking a Lead Java Developer. The role ... 17+ and backend development • Experience developing scalable software applications using ...

Photon

Android Developer

Deerfield, IL · On-site

$56.75 - $74.50/hr

Evaluate compatibility of applications with existing APIs, backend systems, and mobile device ... Strong proficiency in Kotlin and/or Java. * Experience with Android SDK, Android Studio, and ...

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How much do freelance java backend developer jobs pay per hour?

As of Jul 12, 2026, the average hourly pay for freelance java backend developer in Chicago, IL is $56.28, according to ZipRecruiter salary data. Most workers in this role earn between $50.00 and $64.86 per hour, depending on experience, location, and employer.
What are the most commonly searched types of Java Backend Developer jobs in Chicago, IL? The most popular types of Java Backend Developer jobs in Chicago, IL are:
What cities near Chicago, IL are hiring for Freelance Java Backend Developer jobs? Cities near Chicago, IL with the most Freelance Java Backend Developer job openings:
Freelance Java Backend Developer jobs near you
Backend Java Developer plus QA [208702]

Backend Java Developer plus QA [208702]

Aquent Talent

Chicago, IL • On-site

$65 - $72/hr

Temporary

Medical, Dental, Vision, Retirement

Re-posted 26 days ago

Job description

We’re partnering with a global leader dedicated to advancing the worldwide marketplace and serving critical risk management needs for customers across various industries. This organization is at the forefront of developing secure, scalable, and reliable technology solutions that underpin global financial stability. Joining their team means becoming an integral part of a mission-critical environment, where your expertise will directly contribute to shaping the future of market infrastructure and empowering global commerce.

Are you a highly skilled and passionate technologist ready to make a significant impact? We are seeking an experienced engineer to design and implement cutting-edge solutions that drive innovation and maintain the integrity of our client’s robust platforms. In this dynamic role, you will leverage your full-stack capabilities to build secure, high-performance applications, directly influencing the stability and efficiency of systems that operate on a global scale. Your work will ensure the continuous delivery of advanced technological solutions, playing a crucial part in advancing our client’s position as a market leader.

This is a hybrid role, working 2 days per week onsite in our client’s Chicago office, 40 hours per week total

What You’ll Do:

  • Engineer secure, scalable, and reliable technology solutions with a high degree of autonomy.
* Develop clean, modular, and production-ready code for critical applications.
* Design and implement application modules and comprehensive unit tests.
* Contribute to the debugging and design of automated test frameworks.
* Conduct thorough system-wide and integration testing to ensure robust performance.
* Apply strong language proficiency to design with guidance and code independently.
* Create and maintain essential test artifacts, facilitating artifact reviews.

Must-Have Qualifications:

  • At least 5 years of professional experience in software development.
* Strong expertise in core Java and backend development.
* Proven industry experience with Core Java and Multithreading.
* Solid UNIX knowledge.
* Experience with automation testing, specifically using Cucumber.
* Demonstrated experience working in a Continuous Integration environment, utilizing tools like Jenkins and Ansible.

Nice-to-Have Qualifications:

  • Experience with cloud platforms, particularly Google Cloud.

About Aquent Talent:

Aquent Talent connects the best talent in marketing, creative, and design with the world’s biggest brands.
Our eligible talent get access to amazing benefits like subsidized health, vision, and dental plans, paid sick leave, and retirement plans with a match.  More information on our awesome benefits!
Aquent is an equal-opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics. We’re about creating an inclusive environment-one where different backgrounds, experiences, and perspectives are valued, and everyone can contribute, grow their careers, and thrive.

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