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Junior Java Programmer Jobs in Ballwin, MO (NOW HIRING)

Omni Inclusive

Sr Data Engineer

Saint Louis, MO · On-site

$111K - $133K/yr

Strong communication skills to work effectively with cross-functional teams and mentor junior ... Familiarity with Java and Docker is a plus.

Mastercard, Inc.

Senior Software Engineer

O Fallon, MO

$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 ...

Navstar

Software Engineer

Saint Louis, MO · On-site

Guide and mentor junior and mid-level engineers, enforce code quality, and lead peer reviews ... Python, Java, or JavaScript and Go * Front-end and Back-end Frameworks: React, Angular, Vue.js ...

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Junior Java Programmer information

See Ballwin, MO salary details

$59.3K

$103.9K

$156.6K

How much do junior java programmer jobs pay per year?

As of Jun 23, 2026, the average yearly pay for junior java programmer in Ballwin, MO is $103,878.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,400.00 and $103,600.00 per year, depending on experience, location, and employer.

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

To thrive as a Junior Java Programmer, you need a solid understanding of Java programming, object-oriented concepts, and a relevant degree or coursework in computer science. Familiarity with development environments like Eclipse or IntelliJ IDEA, version control systems such as Git, and basic knowledge of databases are typically required. Strong problem-solving skills, attention to detail, and the ability to communicate effectively within a team are important soft skills. These competencies are crucial for delivering clean, maintainable code and collaborating efficiently on software projects.

What are Junior Java Programmers?

Junior Java Programmers are entry-level software developers who specialize in writing, testing, and maintaining code using the Java programming language. They typically work under the supervision of more experienced developers and assist in developing applications, debugging issues, and learning best practices in software development. Their responsibilities often include understanding project requirements, writing clean code, and collaborating with team members to deliver high-quality software solutions. This role is ideal for individuals who have foundational knowledge of Java and are looking to gain professional experience in the field.

What types of projects or tasks can a Junior Java Programmer expect to work on in their first year?

As a Junior Java Programmer, you can expect to work on a variety of tasks such as debugging existing code, writing unit tests, developing small features, and assisting with backend development on larger projects. You'll often collaborate closely with senior developers and participate in code reviews to learn best practices. Many organizations assign juniors to maintenance tasks or simpler modules at first, gradually increasing responsibility as you build confidence and technical skills. This hands-on experience is invaluable for understanding software development workflows and improving your coding abilities.

What is the difference between Junior Java Programmer vs Java Developer?

AspectJunior Java ProgrammerJava Developer
Required CredentialsBasic Java certifications, some programming experienceAdvanced Java certifications, multiple years of experience
Work EnvironmentEntry-level projects, supervised tasksDesign, develop, and maintain complex applications
Employer & Industry UsageTech companies, startups, IT departmentsSoftware firms, enterprise solutions, large-scale projects

While Junior Java Programmers focus on learning and executing basic Java tasks under supervision, Java Developers handle more complex development responsibilities, including designing and implementing software solutions. The roles differ mainly in experience level and scope of work, but both require a solid understanding of Java programming.

Junior Java Programmer jobs near you
Infographic showing various Junior Java Programmer job openings in Ballwin, MO as of June 2026, with employment types broken down into 1% Internship, 69% Full Time, 8% Part Time, 5% Temporary, 16% Contract, and 1% Nights. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $103,878 per year, or $49.9 per hour.

Journeyman Software Engineer

Freedom Technology Solutions Group

Saint Louis, MO • Hybrid

Other

Posted yesterday

Job description

Freedom Technology Solutions Group is seeking a Software Engineer to support our client's intelligence analysis products and capabilities. This position involves providing software development capabilities to enhance existing and emerging client capabilities, including design and development, modernization of existing applications and services, and operations and sustainment. The role focuses on driving the client's adaptation of higher levels of automation and operational efficiency through agile development methodologies, rapid prototyping, and modern technology stacks. 

 The Journeyman Software Developer independently applies expertise to multiple, complex backend development assignments. This role requires originality in developing solutions and provides latitude in designing methodologies and approaches. 

 Responsibilities: 

  • Design, develop, and enhance backend services using Java, JavaScript, and Python.
  • Build and maintain secure, automated DevSecOps pipelines for CI/CD.
  • Lead containerized solution deployments across hybrid and cloud (AWS) environments.
  • Implement and optimize geospatial data processing and API integrations.
  • Troubleshoot, debug, and improve system performance.
  • Mentor junior developers and review code contributions.
  • Contribute to system architecture discussions and recommend improvements.
  • Provide input on deliverables, schedules, and performance metrics.
  • Participate in rapid prototyping to quickly iterate and improve solutions
  • Utilize modern technology stacks to meet client needs
  • Implement CI/CD pipelines using GitLab
  • Collaborate with cross-functional teams to deliver high-quality software solutions 

Key Technologies:

  • Linux
  • Java, JavaScript, Python
  • Containerization (Docker, OpenShift, Kubernetes, ...)
  • AWS Services
  • GitLab
  • Apache Spark, Glue, and other ETL processes/procedures
  • Data Types: Structured and Unstructured, Parquet, JSON, XML, etc. 

Required Qualifications:

  • Active TS/SCI clearance (eligible for CI Poly).
  • 3-8 years software development experience.
  • Strong proficiency in Java, JavaScript, and Python.
  • Experience with DevSecOps pipelines, Agile methodologies, and CI/CD tools (e.g., GitLab).
  • Hands-on experience with AWS services (Lambda, ECS, S3, RDS, etc.).
  • Skilled in containerization technologies (Docker, Kubernetes, OpenShift).
  • Experience with geospatial data frameworks and APIs (e.g., GeoServer, PostGIS, ArcGIS).
  • Using GitLab for code source repository and using GitLab CI/CD
  • Developing customized code, scripts, modules, macro procedures, or libraries for specialized spatial analysis functions using languages such as Python, Java, JavaScript, PHP, C, C++, C#, Perl, or similar 

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