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Java Junior Jobs in Illinois (NOW HIRING)

Yochana

Lead API Developer (Java)

Lisle, IL · On-site

Provide technical leadership and mentorship to junior developers and contractors. Required Skills & Experience * 8+ years of experience in Java/J2EE development, including JSP, Servlets, and Spring ...

Capgemini

Junior SDET (Java)

Chicago, IL · On-site

$43K - $105K/yr

About the job you're considering We are seeking a highly motivated Junior Software Development Engineer in Test (SDET) with strong Java coding skills to join our Quality Engineering team. This role ...

United Airlines

Junior SDET (Java)

Chicago, IL · On-site

$43K - $105K/yr

About the job you're considering We are seeking a highly motivated Junior Software Development Engineer in Test (SDET) with strong Java coding skills to join our Quality Engineering team. This role ...

Cogent Infotech Corp

Senior Java Developer

Chicago, IL · On-site

$59 - $75.25/hr

Senior Java Developer Experience: 5-10 Years Employment Type: Full-time Work Location: On-site ... Guide junior developers when required and support team-level technical growth. * Use AI tools ...

Kanak Elite Services Inc

Java Full Stack Developer

Chicago, IL · On-site

$54 - $69.75/hr

Role: JAVA FULL STACK DEVELOPER Location: Chicago, IL Hybrid (Locals only) Job Summary: We are ... Lead code reviews and mentor junior developers. * Write unit, integration, and automation tests to ...

SynergisticIT

Entry Level Backend Java Developer

Chicago, IL · On-site

$52 - $67.50/hr

Currently, we are looking for entry-level software programmers, IT enthusiasts, and Java developers ... it's a junior or entry-level position. The additional skills are the only way a candidate can be ...

COGENT Infotech

Senior Java Developer

Chicago, IL · On-site

$59 - $75.25/hr

They are seeking Senior Java Developers with 5 to 10 years of strong hands-on experience in ... junior developers when required and support team-level technical growth. • Use AI tools ...

Kaav Inc.

Java Lead Engineer

Chicago, IL · On-site

As a java lead Engineer you will contribute to design, development and deployment of our Client's ... junior developers. * 9. Communicates with end users and internal customers to help direct ...

SynergisticIT

JAVA FULL STACK DEVELOPER

Chicago, IL · On-site

$54 - $69.75/hr

Entry-Level Software Programmers, IT Enthusiasts, Python/Java Developers, Data Analysts/Data ... Please understand skills are required by clients for selection even if it's a junior or entry level ...

Mojo Trek

Lead Java Software Engineer

Chicago, IL

$70 - $80/hr

Mentors junior developers. Communicates with end users and internal customers to help direct ... Strong Java 17+ Backend development is a MUST SpringBoot framework Message streaming solutions ...

AceStack LLC

Full Stack with Java Exp

Chicago, IL · On-site

$54 - $69.75/hr

Full Stack With Java Exp Location: Louisville, KY/ Chicago, IL/ Dallas, TX / Arlington, VA (ONSITE ... junior and mid level developers, helping raise overall technical maturity of the team. • ...

Mojo Trek

Senior Software Engineer (Java)

Chicago, IL

$50 - $70/hr

Mentors junior developers. Communicates with end users and internal customers to help direct ... Strong Java 11 Backend development is a MUST SpringBoot framework Message streaming solutions, such ...

SynergisticIT

Full Stack/Java Developer(REMOTE)

Chicago, IL · On-site

$54 - $69.75/hr

Currently, we are looking for entry-level software programmers, Java full stack developers, Python ... if its junior or entry level position the additional skills and project work with hands on ...

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All JobsJava Junior JobsJava Junior Jobs in Illinois

Java Junior information

What is the difference between Java Junior vs Java Developer?

AspectJava JuniorJava Developer
Required Experience0-2 years2+ years
CertificationsOptional, entry-level certificationsOptional, advanced certifications
Work EnvironmentTraining, mentorship-focusedProject-driven, independent
ResponsibilitiesLearning, basic coding tasksDesign, develop, maintain Java applications

Java Junior roles are entry-level positions focused on learning and supporting Java projects, often requiring minimal experience. Java Developers have more experience, handle complex tasks, and contribute to project design and implementation. The transition from Java Junior to Java Developer involves gaining skills, experience, and certifications over time.

What are some typical challenges a Java Junior might face when starting out, and how can they overcome them?

As a Java Junior, you may encounter challenges like understanding complex codebases, adapting to agile development practices, and debugging unfamiliar issues. It's common to feel overwhelmed at first, but asking questions, participating in code reviews, and pairing with more experienced developers can accelerate your learning. Regularly practicing coding, studying documentation, and using collaboration tools will also help you quickly become a productive member of the team.

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

To thrive as a Java Junior, you need a solid understanding of Java programming, object-oriented principles, and a relevant degree or coursework in computer science. Familiarity with development tools like Eclipse or IntelliJ IDEA, version control systems (such as Git), and basic knowledge of databases are typically expected. Strong problem-solving abilities, eagerness to learn, and good communication skills help juniors excel in collaborative and fast-paced environments. These skills enable efficient coding, effective teamwork, and smooth adaptation to evolving project requirements.

What are Java Junior developers?

Java Junior developers are entry-level software engineers who specialize in programming using the Java language. They typically have a foundational understanding of Java syntax, object-oriented programming concepts, and basic software development practices. Java Juniors often assist with coding, debugging, and testing under the supervision of more experienced developers, while continuously learning and building their technical skills. Their responsibilities may also include maintaining existing applications and writing simple features as part of a development team.
What are the most commonly searched types of Java jobs in Illinois? The most popular types of Java jobs in Illinois are:
What are popular job titles related to Java Junior jobs in Illinois? For Java Junior jobs in Illinois, the most frequently searched job titles are:
What job categories do people searching Java Junior jobs in Illinois look for? The top searched job categories for Java Junior jobs in Illinois are:
What cities in Illinois are hiring for Java Junior jobs? Cities in Illinois with the most Java Junior job openings:
Java Junior jobs near you

Lead API Developer (Java)

Yochana

Lisle, IL • On-site

Other

Posted 12 days ago

Job description

Role: Lead API Developer (Java)
Location: Lisle, IL (Onsite)
Type: Fulltime/Contract
Job description:
We are seeking a highly skilled and hands-on Lead Developer to drive the design and implementation of APIs for our VIN-based parts catalog. This role will lead the technical development of a modular, scalable, and secure eCommerce platform, integrating with Azure API Management (APIM) and leveraging the existing architecture and Java-based backend systems.
Key Responsibilities
  • Lead the design and development of RESTful APIs to support VIN-based parts lookup, shopping cart, and order processing workflows.
  • Integrate Azure APIM to manage, secure, and monitor APIs across development and production environments.
  • Collaborate with cross-functional teams to modernize the existing Java/J2EE-based catalog system using modular JavaScript and microservices architecture.
  • Translate business requirements into scalable technical solutions using tools such as SOAP/REST, and secure SSO flows (ADFS, SAML).
  • Oversee the migration of legacy scripts into modular components and ensure seamless integration with International's platforms
  • Ensure secure and performant API design, including token-based authentication, TLS encryption, and SOAP header security
  • Provide technical leadership and mentorship to junior developers and contractors.
Required Skills & Experience
  • 8+ years of experience in Java/J2EE development, including JSP, Servlets, and Spring Framework.
  • Proven experience designing and deploying RESTful APIs and SOAP-based services.
  • Strong knowledge of Azure API Management (APIM), including policy configuration, gateway deployment, and analytics.
  • Experience with RequireJS, jQuery, Bootstrap, and modular JavaScript architecture
  • Experience with Oracle or SQL Server databases and WebSphere environments.
  • Strong understanding of secure transport (SSL/TLS), WS-Security, and SOAP fault handling
Preferred Qualifications
  • Exposure to CI/CD pipelines and DevOps practices in Azure environments.
  • Knowledge of VIN decoding, parts master data, and related automotive domain concepts.

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