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Core Java Jobs in Chicago, IL (NOW HIRING)

Sonsoft Inc

Java + Elastic Search

Chicago, IL · On-site

$52.50 - $68/hr

Experience in Core Java, Spring, RESTFul services, SOAP services * Experience in API development, exposing services * Experience in Oracle DB and writing PL/SQL * Experience in wirting Unit Test ...

Addison Group

Lead Java Developer

Addison, IL · On-site

JUnit, JMeter, Selenium etc.) You have in depth experience with server side design, development and building highly concurrent and throughput applications using Core Java, JSPs, Servlets, XML/XSL ...

Avance Consulting Services

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

... : 1. Core Java 2. Spring MVC / core 3. JPA 4. Restful webservices 5. Jquery 6. Oracle - sql/ plsql 7. Messaging - queue and topics 8. Html,CSS 9. SSL - 2 way 10. Spring Security Additional ...

Avance Consulting Services

Java Developer

Chicago, IL · On-site

$52.50 - $68/hr

... : 1. Core Java 2. Spring MVC / core 3. JPA 4. Restful webservices 5. Jquery 6. Oracle - sql/ plsql 7. Messaging - queue and topics 8. Html,CSS 9. SSL - 2 way 10. Spring Security Additional ...

Jobsbridge

Senior Java Developer

Chicago, IL · On-site

$59 - $75.25/hr

Required Skills: core java, JSP/servlet, Spring/IOC, JUNIT, OOAD, hibernate, xml, JDBC, SQL, UML, design patterns, JMS, JAXB, annotations Good to Have: castor, spring-WS, spring-security, AJAX, open ...

Addison Group

Lead Java Developer

Addison, IL · On-site

JUnit, JMeter, Selenium etc.) • You have in depth experience with server side design, development and building highly concurrent and throughput applications using Core Java, JSPs, Servlets, XML/XSL ...

blueStone

Sr. Java Architect

Chicago, IL · On-site

Strong hands on Core Java and J2EE experience * Significant experience with Spring framework, high volume, high concurrency applications * Skilled with MQ, CTG, and tool like Akka are preferable

Sonsoft Inc

Java Developer with" Elastic Search"

Chicago, IL · On-site

$52.50 - $68/hr

Experience in Core Java, Spring, RESTFul services, SOAP services * Experience in API development, exposing services * Experience in Oracle DB and writing PL/SQL * Experience in wirting Unit Test ...

Sonsoft Inc

Java Developer (Apache Camel)

Chicago, IL · On-site

$52.50 - $68/hr

Preferred 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 ...

Sonsoft Inc

Java Developer (Apache Camel)

Chicago, IL

$52.50 - $68/hr

Preferred 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 ...

Rewards Network

Senior Software Engineer (Java)

Chicago, IL · On-site

$128K - $169K/yr

Understands, articulates, and conforms to core OOP principles * Understands, utilizes, and leverages core Java architecture * 8+ years of web-based development experience * Experience with J2EE ...

Rewards Network

Senior Software Engineer (Java)

Chicago, IL · On-site

$128K - $169K/yr

... core OOP principles Understands, utilizes, and leverages core Java architecture 8+ years of web-based development experience Experience with J2EE design and implementation, Spring Core (Dependency ...

Rewards Network

Senior Software Engineer (Java)

Chicago, IL · On-site

$128K - $169K/yr

... core OOP principles Understands, utilizes, and leverages core Java architecture 8+ years of web-based development experience Experience with J2EE design and implementation, Spring Core (Dependency ...

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Core Java information

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How much do core java jobs pay per hour?

As of Jul 15, 2026, the average hourly pay for core java in Chicago, IL is $61.73, according to ZipRecruiter salary data. Most workers in this role earn between $52.02 and $69.33 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 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 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 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
Java + Elastic Search

Java + Elastic Search

Sonsoft Inc

Chicago, IL • On-site

$52.50 - $68/hr

Full-time

Re-posted 17 days ago

Job description

Company Description

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.

Job Description

Mandatory Skills:-

  • Strong J2EE development (8+ years) in enterprise applications
  • Experience in Core Java, Spring, RESTFul services, SOAP services
  • Experience in API development, exposing services
  • Experience in Oracle DB and writing PL/SQL
  • Experience in wirting Unit Test cases

Secondary Skills:-

  • Working experience in Elastic Search
Additional Information

** U.S. Citizens and those who are authorized to work independently in the United States are encouraged to apply. We are unable to sponsor at this time.

This is a Full-Time / Permanent job opportunity.

Only US Citizen & Green Card Holder can apply.
Please submit Driving Licence & LinkedIn ID as mandatory.

** All your information will be kept confidential according to EEO guidelines.


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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