ZipRecruiter

Log In

1

Core Java Jobs in Chicago, IL (NOW HIRING)

Concord IT Systems

Core Java Developer

Chicago, IL · Hybrid

Core Java Developer Position Responsibilities Core Java Developer Work Location: Chicago, IL (Hybrid Role) Must have skills: AWS, Microservices, testing, Amazon RDS or DynamoDB Roles: 1. ** ...

SonSoft

Core Java Developer

Chicago, IL

Core Java Developer 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 ...

Sonsoft Inc

Core Java Developer

Chicago, IL · On-site

Preferred At least 4 years of experience working on Core Java/Spring . Atleast 4 years of experience with TDD based development and re-engineering of existing application to incorporate unit tests ...

Sonsoft Inc

Core Java Developer

Chicago, IL

Preferred At least 4 years of experience working on Core Java/Spring . Atleast 4 years of experience with TDD based development and re-engineering of existing application to incorporate unit tests ...

SonSoft

Core Java Developer with Spring

Chicago, IL

Core Java Developer With Spring 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 ...

next page

Showing results 1-20

People also search for

All JobsCore Java JobsCore Java Jobs in Chicago, IL

Core Java information

See Chicago, IL salary details

$40

$61

$84

How much do core java jobs pay per hour?

As of Jun 3, 2026, the average hourly pay for core java in Chicago, IL is $61.78, according to ZipRecruiter salary data. Most workers in this role earn between $52.02 and $69.38 per hour, depending on experience, location, and employer.

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

To thrive as a Core Java Developer, you need strong proficiency in Java programming, object-oriented principles, data structures, and a relevant degree in computer science or a related field. Familiarity with tools such as Eclipse or IntelliJ IDEA, version control systems like Git, and frameworks like Spring is typically required, along with certifications such as Oracle Certified Professional Java Programmer (OCPJP) being advantageous. Excellent problem-solving abilities, attention to detail, and effective communication skills help set standout developers apart. These skills ensure robust, maintainable code and efficient collaboration within software development teams.

What are some typical challenges Core Java developers face when working on large-scale enterprise applications?

Core Java developers working on large-scale enterprise applications often encounter challenges such as managing complex codebases, ensuring thread safety in concurrent environments, and optimizing application performance. They may also need to integrate with legacy systems and maintain code readability for long-term support. Collaborating effectively with cross-functional teams, including QA, DevOps, and business analysts, is essential to meet project goals and maintain high software quality.

What are Core Java developers?

Core Java developers are software professionals who specialize in building applications using the fundamental features and libraries of the Java programming language. They focus on core concepts such as object-oriented programming, data structures, multithreading, exception handling, and the Java API. Core Java is the foundation for other Java technologies like Java EE, and developers in this role often create desktop, server-side, or foundational components of larger systems. Their expertise is critical in ensuring robust, scalable, and maintainable Java applications.

What is the difference between Core Java vs Java Developer?

AspectCore JavaJava Developer
FocusFundamental Java programming, core APIs, basic application developmentBuilding, testing, and maintaining Java applications, including web and enterprise solutions
SkillsJava syntax, OOP principles, basic APIsCore Java, frameworks (Spring, Hibernate), web technologies
Work EnvironmentLearning and understanding Java fundamentalsDeveloping full applications, debugging, deployment

Core Java refers to the fundamental Java programming language and its core APIs, essential for understanding Java basics. Java Developer, on the other hand, applies these fundamentals to develop complete applications, often using frameworks and additional tools. While Core Java is foundational, Java Developers build on this knowledge to create real-world software solutions.

What are popular job titles related to Core Java jobs in Chicago, IL? For Core Java jobs in Chicago, IL, the most frequently searched job titles are:
What job categories do people searching Core Java jobs in Chicago, IL look for? The top searched job categories for Core Java jobs in Chicago, IL are:
Core Java jobs near you
Infographic showing various Core Java job openings in Chicago, IL as of May 2026, with employment types broken down into 71% Full Time, 2% Part Time, 24% Contract, and 3% Nights. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $128,496 per year, or $61.8 per hour.

Core Java Developer

Concord IT Systems

Chicago, IL • Hybrid

Other

Posted 16 days ago

Job description

Position Title* Core Java Developer Position Responsibilities
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

Apply