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Java Junior Jobs in Edwardsville, IL (NOW HIRING)

Equifax, Inc.

Senior Data Engineer

Saint Louis, MO · On-site

$103K - $140K/yr

Act as a mentor to junior engineers within the Data Platform team and also the broader D&A ... Experience programming in Java * Experience scaling Airflow * Experience with dbt * DevOps / CICD ...

Leidos

Mid-Level Software Engineer

Collinsville, IL · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Madison, IL · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Deloitte

Guidewire PolicyCenter Sr Developer

Saint Louis, MO · On-site

$53 - $70/hr

In addition to contributing through hands-on development, you will help guide junior practitioners ... A strong Java, Gosu (Guidewire), EJB, BPEL, UNIX background Experience with Business Process ...

Leidos

Mid-Level Software Engineer

Bridgeton, MO · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

South Roxana, IL · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Boeing

Senior DevSecOps Engineer

Berkeley, MO · On-site

$107K - $147K/yr

Mentors and advises junior teammates and development teams on best practices in DevSecOps ... C++, C#, Java, or Python * Experience with cloud platforms * Experience with Agile software ...

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Java Junior information

See Edwardsville, IL salary details

$57.2K

$100.2K

$151.1K

How much do java junior jobs pay per year?

As of Aug 22, 2026, the average yearly pay for java junior in Edwardsville, IL is $100,229.00, according to ZipRecruiter salary data. Most workers in this role earn between $70,800.00 and $99,900.00 per year, depending on experience, location, and employer.

What is a Java Junior?

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 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 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 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 cities near Edwardsville, IL are hiring for Java Junior jobs?

Cities near Edwardsville, IL with the most Java Junior job openings:

Java Junior jobs near you

Senior Test Systems Engineer 112-204

IC-CAP LLC

Saint Louis, MO • On-site

Full-time

Re-posted 28 days ago

Job description

Senior-level Test Systems Engineers assist in leading Application, System and Integration Testing teams performing test and evaluation across the National System of Geospatial-intelligence (NSG), Allied System of Geospatial-intelligence (ASG) and Federal Agencies to ensure timely and accurate GEOINT.
Duties may include:
  • Guides Mid-level and Junior-level system engineers performing test and evaluation across the National System of Geospatial-intelligence (NSG), Allied System of Geospatial-intelligence (ASG) and Federal Agencies.
  • Performs testing of applications and application programming interfaces (APIs) in DevOps pipelines utilizing quality assurance measures established by the government and industry best practices.
  • Performs independent integration testing on the system software or hardware to determine the systems compliance with specified requirements.
  • Plans and executes manual tests, and automated test scripts using scripting and programming languages.
  • Supports technical investigations for defects discovered during test activities.

Education and Experience
Required:
  • Bachelors degree or higher in Engineering, Computer Science, Information Technology, Management Information Systems, or related STEM degree program, or 12+ years of experience as a Test Systems Engineer.
  • 12+ years of experience with test management and defect tracking tools.
  • Experience with three or more of the following; JMeterand, Jenkins, Docker, Postman, Swagger, Nexus, Apigee or GitHub/GitLab (or equivalent software packages), Java, Bash, Curl, XML, JSON, SQL, Python, Javascript, and AWS and C2S.
  • Experience with traditional, Agile, and DevOps development practices and associated testing strategies.

Desired:
  • Masters degree in Computer Science, Information Technology, Management Information Systems, or related STEM degree program.
  • Working knowledge of Model Based Systems Engineering, processes, tools and languages.
  • Working knowledge of Software Development Frameworks.

Security Clearance:
  • Active TS/SCI clearance and the willingness to sit for a CI polygraph, if needed

IC-CAP provides equal employment opportunities (EEO) to all applicants for employment without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status.

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