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Junior Java Backend Developer Jobs in Illinois (NOW HIRING)

Apex Informatics

Java Developer

Chicago, IL · Hybrid

$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

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 ...

Leidos

Mid-Level Backend Software Engineer

Madison, IL

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Roxana, IL

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Caseyville, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Hartford, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Columbia, IL

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Dupo, IL

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Maryville, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Wood River, IL · On-site

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

Leidos

Mid-Level Backend Software Engineer

Venice, IL

$87K - $157K/yr

Design, develop, test, and maintain backend application components using Java or Python * REST API ... Object-Oriented Programming: Apply object-oriented design principles to build scalable and ...

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Junior Java Backend Developer information

See Illinois salary details

$59.1K

$103.5K

$156K

How much do junior java backend developer jobs pay per year?

As of Jun 5, 2026, the average yearly pay for junior java backend developer in Illinois is $103,516.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,200.00 and $103,200.00 per year, depending on experience, location, and employer.

What are Junior Java Backend Developers?

Junior Java Backend Developers are entry-level software engineers who specialize in building and maintaining the server-side logic of web applications using the Java programming language. They work closely with senior developers to implement APIs, manage databases, and ensure smooth data flow between servers and users. Their responsibilities often include writing clean, efficient code, debugging applications, and learning new technologies as needed. Junior Java Backend Developers typically have a foundational knowledge of Java, SQL, and frameworks like Spring Boot.

What are some common challenges faced by Junior Java Backend Developers when joining a new team?

As a Junior Java Backend Developer, one common challenge is adapting to existing codebases and understanding the team's preferred coding standards and practices. You may also find it challenging to grasp complex system architectures or integrate your code with various APIs and databases. However, most teams provide onboarding support, code reviews, and mentorship to help you ramp up. Collaborating closely with senior developers and asking questions can significantly ease your transition and foster your growth in the role.

What are the key skills and qualifications needed to thrive as a Junior Java Backend Developer, and why are they important?

To thrive as a Junior Java Backend Developer, you need solid knowledge of Java programming, understanding of object-oriented design, and familiarity with backend frameworks like Spring, often supported by a degree in computer science or related field. Experience with relational databases (e.g., MySQL), version control systems (like Git), and exposure to RESTful APIs and build tools (such as Maven) are typically required. Strong problem-solving skills, attention to detail, and effective communication make someone stand out in this role. These skills and qualities are crucial for building reliable, scalable server-side applications and collaborating effectively within a software development team.
What are the most commonly searched types of Java Backend Developer jobs in Illinois? The most popular types of Java Backend Developer jobs in Illinois are:
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What cities in Illinois are hiring for Junior Java Backend Developer jobs? Cities in Illinois with the most Junior Java Backend Developer job openings:
Junior Java Backend Developer jobs near you
Infographic showing various Junior Java Backend Developer job openings in Illinois as of May 2026, with employment types broken down into 76% Full Time, 10% Part Time, 1% Temporary, and 13% Contract. Highlights an 80% Physical, 5% Hybrid, and 15% Remote job distribution, with an average salary of $103,516 per year, or $49.8 per hour.
Java Developer

Java Developer

Apex Informatics

Chicago, IL • Hybrid

$52.50 - $68/hr

Full-time

Posted 19 days ago

Job description

Core Java Developer Work Location: Chicago, IL (Hybrid Role) Must have skills: AWS, Microservices, testing, Amazon RDS or DynamoDB Roles: 1. Application Development: Design, code, test, and debug Java applications that adhere to best practices, coding standards, and architectural guidelines. 2.

AWS Integration: Utilize a variety of AWS services, such as AWS Lambda, Amazon EC2, Amazon S3, AWS RDS, and Amazon DynamoDB, to build and deploy scalable applications in the cloud. 3. Microservices Architecture: Architect and develop microservices-based applications using Java and AWS services, ensuring modularity, independence, and scalability.

4. Database Management: Design and optimize databases within AWS using services like Amazon RDS or DynamoDB, ensuring efficient data storage and retrieval. 5.

Code Quality: Write clean, maintainable, and well-documented code following industry best practices and coding standards. Conduct code reviews and offer constructive feedback to peers. 6.

Performance Optimization: Identify and address performance bottlenecks in both front-end and back-end components, ensuring optimal application speed and responsiveness. 7. Testing and Debugging: Create and execute unit tests, integration tests, and end-to-end tests to verify the correctness and reliability of the application.

Debug and resolve issues as they arise. 8. Collaboration: Work closely with cross-functional teams including designers, product managers, and other developers to translate requirements into technical solutions.

Participate in agile development methodologies.

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