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Java Junior Jobs in Saint Louis, MO (NOW HIRING)

AG Technologies

Junior JAVA Devloper

Chesterfield, MO · On-site

$300/wk

Experience in Java development This position requires a TS/SCI clearance with a polygraph. Qualifications Bachelors / Masters Degree in Technical field such as Computer Science, Computer Engineering ...

AG Technologies

Junior JAVA Devloper

Chesterfield, MO · On-site

$300/wk

Experience in Java development This position requires a TS/SCI clearance with a polygraph. Qualifications Bachelors / Masters Degree in Technical field such as Computer Science, Computer Engineering ...

Artius Solutions

Lead Java Engineer

Saint Louis, MO · On-site

$140K - $150K/yr

Mentor and support junior engineers; take part in hiring, onboarding, and technical knowledge ... Java 21 preferred): including lambda expressions, Stream API, CompletableFuture, Virtual Threads ...

CYNET SYSTEMS

Java Technical Lead

Saint Louis, MO · On-site

$55 - $60/hr

... applications using Java. * Minimum of 3-5 years of experience building web services and cloud ... Facilitates code reviews and mentors junior developers. * Uses object-oriented techniques and ...

Staffingine LLC

Automation Engineer

Saint Louis, MO · On-site

... junior team members and share best practices in test automation and quality assurance Skills Mandatory Skills : API/Microservices RestAssured Testing, Appium-Java -Testing, Playwright Java testing ...

Mastercard, Inc.

Senior Software Engineer

O Fallon, MO · On-site

$114K - $151K/yr

This role is hands-on and requires deep expertise in Java and Spring-based platforms, strong ... Mentor junior engineers and contribute to a culture of technical excellence and ownership. All ...

MasterCard

Senior Software Engineer

O Fallon, MO

$114K - $151K/yr

This role is handson and requires deep expertise in Java and Springbased platforms, strong ... Mentor junior engineers and contribute to a culture of technical excellence and ownership. All ...

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All JobsJava JobsJava Junior JobsJava Junior Jobs in Saint Louis, MO

Java Junior information

See Saint Louis, MO salary details

$59.3K

$103.9K

$156.5K

How much do java junior jobs pay per year?

As of Aug 11, 2026, the average yearly pay for java junior in Saint Louis, MO is $103,858.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,400.00 and $103,500.00 per year, depending on experience, location, and employer.

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.

Are Java Junior jobs still in demand?

Java Junior jobs remain in demand as Java is widely used in enterprise applications, Android development, and backend systems. Employers seek candidates with foundational Java skills, often complemented by knowledge of frameworks like Spring and basic understanding of version control tools such as Git.

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 most commonly searched types of Java jobs in Saint Louis, MO? The most popular types of Java jobs in Saint Louis, MO are:
Java Junior jobs near you
Infographic showing various Java Junior job openings in Saint Louis, MO as of July 2026, with employment types broken down into 84% Full Time, 7% Part Time, 8% Contract, and 1% Nights. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $103,858 per year, or $49.9 per hour.

Junior JAVA Devloper

AG Technologies

Chesterfield, MO • On-site

$300/wk

Full-time

Medical, Dental, Vision, Retirement

Re-posted 20 days ago

Job description

Company Description

AG Technologies was founded as a software solutions company in 2008 & has its corporate headquarters at Chesterfield, Missouri with branches within the US and India. Over the years the organization has expanded into various market segments & activities including "Consultancy services" of technical personnel in large and multi-national organizations. Over the last five years, our client base of Fortune 100 companies has expanded dramatically

Job Description

 0- 2 years' experience in the development, engineering, interfacing, integration of hardware and software systems to include an understanding of requirements elicitation, analysis and functional allocation, concepts of operation, interface standards, and system architectures. 


* Basic understanding of Object Oriented and Structured development methodologies and languages. 


* Developing documentation required to support a program's technical issues and training situations. 


* Experience in Java development This position requires a TS/SCI clearance with a polygraph. 

Qualifications

Bachelors / Masters Degree in Technical field such as Computer Science, Computer Engineering, Math or Information Systems from an accredited university or equivalent work experience in lieu of degree.


A minimum of 2 years of relevant work experience with Java/J2EE application development.


Additional Information

Free training program.

Free accommodation during the training and until an employee gets placed on the project. 

Full time in house attorney available for legal formalities.

Medical benefits provided - health, dental, vision insurances.

Company is E-verified to get an OPT STEM Extension. 

We are an Equal Employment Opportunity Employer. 

Company Files H1B for the employees.

One time travel expenses paid (Maximum $300 will be reimbursed once you are on project).

Salary hikes after every 6 months.

Strong and motivated marketing team to place an employee on the project

401k-Plan

529k-Plan

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