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Java Junior Jobs in Roxana, IL (NOW HIRING)

Peraton

Test Systems Engineer

Saint Louis, MO

$112K - $179K/yr

Guides Mid-level and Junior-level system engineers performing test and evaluation across the ... Java, Bash, Curl, XML, JSON, SQL, Python, Javascript, and AWS and C2S. * Experience with ...

Peraton

Test Systems Engineer

Saint Louis, MO

$112K - $179K/yr

Guides Mid-level and Junior-level system engineers performing test and evaluation across the ... Java, Bash, Curl, XML, JSON, SQL, Python, Javascript, and AWS and C2S. * Experience with ...

Peraton

Test Systems Engineer

Saint Louis, MO · On-site

$112K - $179K/yr

Guides Mid-level and Junior-level system engineers performing test and evaluation across the ... Java, Bash, Curl, XML, JSON, SQL, Python, Javascript, and AWS and C2S. * Experience with ...

Boeing

Senior Software Engineer-DevSecOps

Berkeley, MO · On-site

$115K - $151.60K/yr

Mentors and advises junior teammates and development teams on best practices in DevSecOps ... Bachelor's Degree * 7+ years of experience with C, C++, C#, Java, or Python * 6+ years of ...

Boeing

Lead Software Engineer-Developer

Berkeley, MO · On-site

Mentor and coach junior engineers in software development * Interface with various software ... with Java and/or C++ object-oriented programming * 3+ years of experience leading software ...

Boeing

Lead Software Engineer-Developer

Berkeley, MO · On-site

Mentor and coach junior engineers in software development * Interface with various software ... with Java and/or C++ object-oriented programming * 3+ years of experience leading software ...

Boeing

Senior Software Engineer-DevSecOps

Berkeley, MO

$114.70K - $151.20K/yr

Mentors and advises junior teammates and development teams on best practices in DevSecOps ... Bachelor's Degree * 7+ years of experience with C, C++, C#, Java, or Python * 6+ years of ...

Boeing

Senior Software Engineer-DevSecOps

Berkeley, MO · On-site

$115K - $151.60K/yr

Mentors and advises junior teammates and development teams on best practices in DevSecOps ... Bachelor's Degree * 7+ years of experience with C, C++, C#, Java, or Python * 6+ years of ...

Boeing

Senior Software Engineer-DevSecOps

Berkeley, MO

$115K - $151.60K/yr

Mentors and advises junior teammates and development teams on best practices in DevSecOps ... Bachelor's Degree * 7+ years of experience with C, C++, C#, Java, or Python * 6+ years of ...

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$58.5K

$102.4K

$154.4K

How much do java junior jobs pay per year?

As of May 31, 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 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 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 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
Software Engineer

Software Engineer

Reinventing Geospatial, Inc. (RGi)

Saint Louis, MO

Full-time

Posted 3 days ago

Job description

Reinventing Geospatial (RGi) is a leading expert in geospatial solutions for Defense, Intelligence, and Federal clients. We enhance situational awareness for soldiers and analysts by integrating software development with geospatial intelligence. Our projects range from data collection to advanced deep learning, leveraging tools like Python, Java, and ArcGIS.
 
We don't just fill roles we build teams of high performers and leaders who make an immediate impact. At our core, we're driven by innovation and powered by people who work at the intersection of passion and performance. Here, you'll collaborate with bold thinkers, leverage cutting edge technology, and tackle meaningful challenges from day one.
 
Our culture is defined and anchored by three pillars:
 
Energy: We bring passion, purpose, and urgency to our work.
Edge: We take initiative, embrace growth, and step outside our comfort zone.
Execution: We get things done smartly, decisively, and with real results.
 
If you're the kind of person who leads with initiative, thrives in a fast-paced environment, and is eager to create real impact, we want you on our team.
 
Clearance:
Active Top Secret clearance with an ability to obtain SCI access and willingness to obtain CI Polygraph
US Citizenship Required 
As a Software Engineer, you will...
  • Lead full-stack software development of enterprise applications and services supporting our customer’s GEOINT mission.
  • Design and implement secure, scalable microservices in cloud environments such as AWS GovCloud or C2S.
  • Guide and mentor junior and mid-level engineers, enforce code quality, and lead peer reviews.
  • Build and deploy applications using DevSecOps pipelines, container orchestration, and Infrastructure-as-Code tools.
  • Collaborate with cross-functional teams including analysts, UI/UX designers, DevOps engineers, and product owners.
  • Translate mission requirements into technical implementations that meet security, performance, and scalability needs.
  • Ensure compliance with our customer and IC cybersecurity and accreditation standards (e.g., RMF, STIGs).
Software Engineer Qualifications...
  • Bachelor's degree in Computer Science, Software Engineering, or related field and 6+ years experience.
  • Strong proficiency with: HTML, CSS, JSON, Ajax, and REST APIs
  • Object-oriented Programming: Python, Java, or JavaScript and Go
  • Front-end and Back-end Frameworks: React, Angular, Vue.js, jQuery, Spring Boot, Django, Node.js, Flask, or Svelte.
  • A strong working knowledge of: AWS, Azure, or similar cloud platforms, MySQL, PostgreSQL, or SQL Server
  • Hands on experience with: Windows, Linux, Git
  • Deep understanding of modern software design patterns and coding standards.
  • Experience architecting, developing, and delivering complex software systems into production.
  • Hands on experience developing containerized applications with Docker and Kubernetes.
  • Experience deploying to and developing in classified cloud environments (e.g., C2S, AWS GovCloud).
  • Familiarity with DevSecOps tools and practices (e.g., GitLab CI/CD, Jenkins, SonarQube, Nexus, Terraform).
  • Solid understanding of Agile methodologies and secure software lifecycle principles.
  • Strong, self-motivated desire to learn new programming languages, tools, frameworks, and techniques.
Additional Skills We'd Like to See:
  • Frontend Web Development: UI/UX
  • NoSQL Database: OpenSearch/Elasticsearch.
  • Cloud Exposure: AWS, IBM, Google, Azure, and Oracle and S3, SQS, SNS, EC2, CloudFormation and RDS.
  • Knowledge of geospatial data formats, tools, and standards (e.g., OGC, GeoServer, PostGIS, ESRI).
  • Experience with IC enterprise environments and tools (e.g., Keycloak, Vault, CloudFormation)
  • Certifications such as AWS Certified Developer, CISSP, Security+, SAFe Agile or similar.
Who we are:
Reinventing Geospatial, Inc. (RGi) is a fast-paced small business that has the environment and culture of a start-up, with the stability and benefits of a well-established firm. We solve complex problems within geospatial software development and national defense to make an Immediate Impact for our nation’s soldiers and analysts.

We pride ourselves on giving employees an exceptional life experience, where creativity thrives, and challenges are simply part of the fun. We provide truly excellent benefits, including:

·        100% paid employee healthcare & dental insurance
·        Paid parental leave
·        401k with matching
·        Escalating vacation time
·        Referral bonuses
·        Tuition reimbursement
·        Professional development training
·        Free beverages and snacks
·        Weekly catered lunches and breakfast on Fridays
 
Grow to be our next leader:
At RGi, fostering a strong and organic corporate culture is paramount and serves as a compass on the decisions we make and how we operate the company. We believe our culture of camaraderie, innovation, and collaboration reflects the caliber of our employees and their dedication to the mission of providing quality software to our customers. As such, we want our employees to feel empowered to seek growth and leadership opportunities within the company and position us to maintain our culture as we grow. RGi provides opportunities, resources, training, and mentorship to all our employees to let them take control of their careers and become a leader or a crucial member of our company. If this is what you are looking for in a company, then you are what we are looking for in an employee.

Reinventing Geospatial, Inc. is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, sex, national origin, age, veteran status, disability, or any other protected class. U.S. Citizenship is required for all positions.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.