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Java Junior Jobs in Roxana, IL (NOW HIRING)

CACI

Senior Application Developer

Saint Louis, MO · On-site

$75K - $158K/yr

Mentor mid-level and junior developers and contribute to engineering standards. Qualifications ... Expert-level development in Java, Python, or both, including modern web frameworks. Experience ...

CACI

Software Engineer

Saint Louis, MO · On-site

Develop, test, and maintain software applications using Java and/or Python. Design and implement ... Mentor junior developers and provide technical guidance within the development team as needed.

CACI

Software Engineer

Saint Louis, MO · On-site

Develop, test, and maintain software applications using Java and/or Python. Design and implement ... Mentor junior developers and provide technical guidance within the development team as needed.

D2 Technical Services

AWS Cloud Engineer

Saint Louis, MO · On-site

$130 - $140K/hr

Mentoring junior developers * Writing and reading unit tests; understanding code-quality analysis ... Python, Ruby, or Java) * Experience with Go programming language * Familiarity with HTML, CSS ...

Abile Group, Inc.

Cloud Engineer

Saint Louis, MO · On-site

$54.25 - $72.50/hr

Mentors junior developers. * Writes and reads unit tests; understanding code-quality analysis ... Python, Ruby, or Java). * Experience with Go programming language. * Familiarity with HTML, CSS ...

D2 Technical Services

AWS Cloud Engineer

Saint Louis, MO · On-site

$130 - $140K/hr

Mentoring junior developers * Writing and reading unit tests; understanding code-quality analysis ... Python, Ruby, or Java) * Experience with Go programming language * Familiarity with HTML, CSS ...

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Java Junior information

See Roxana, IL salary details

$58.5K

$102.4K

$154.4K

How much do java junior jobs pay per year?

As of Sep 9, 2026, the average yearly pay for java junior in Roxana, IL is $102,442.00, according to ZipRecruiter salary data. Most workers in this role earn between $72,400.00 and $102,100.00 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 are popular job titles related to Java Junior jobs in Roxana, IL?

For Java Junior jobs in Roxana, IL, the most frequently searched job titles are:

What cities near Roxana, IL are hiring for Java Junior jobs?

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

Java Junior jobs near you

Test engineer with Security Clearance

Saint Louis, MO • On-site

CEdge Software Consultants
11 - 50 employees
Learn more about CEdge Software Consultantsexternal

Other

Re-posted 14 days ago

Job description

CEdge has an opportunity for a Test Systems Engineer , located in St Louis, MO. If you are ready to work alongside World Renowned Technology experts, and carry the skills below, this is the opportunity that will inevitably take your career to unbelievable levels! ***This position requires a TS/SCI Security Clearance*** TO01, Test Systems Engineer Responsibilities 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 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 system’s 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. Required: · Bachelor’s degree or higher in Engineering, Computer Science, Information Technology, Management Information Systems, or related STEM degree program, or 6 years of experience as a Test Systems Engineer. · 6 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. · TS/SCI clearance adjudication or ability to obtain SCI and pass a polygraph. Desired: · Master’s 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.

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