ZipRecruiter

Log In

1

Junior Software Developer Java Jobs in Saint Charles, MO

TriOptus LLC

Senior Software Engineer - Java Developer

MO · On-site

$53.50 - $68.25/hr

Senior Software Engineer (Java Developer) Location: O'fallon, Missouri Duration: 24 months Experiece: 7+ years Skills summary: • Advanced in with Linux and Java development (JDK 1.7 or greater ...

Leidos

Software Developer

Saint Louis, MO · On-site

$107K - $195K/yr

The Leidos Spatial Solutions Division has an exciting opportunity for an experienced Software ... Experience programming in C++, Java, Typescript, and Bash * Experience developing in the following ...

DCS Corp

Senior Level Software Developer

Saint Louis, MO · On-site

$53 - $70/hr

We are seeking a Software Engineer to support our client's intelligence analysis products and ... Java, JavaScript or Python enterprise application development. Web services architecture, design ...

ACI Infotech

Java Developer

Lake Saint Louis, MO · On-site

$48.25 - $62.50/hr

Onsite Sr. Java Developer Location: St. Louis, MO In short, I require ::-- Java , spring boot ... software development practices • Collaborate with other teams as needed to build enterprise ...

Apex Informatics

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

St Louis, MO * 10+ years of hands-on software engineering experience * Excellent hands-on experience in Java * Experience in developing REST services. * Experience in unit test frameworks. * Ability ...

The Timberline Group

Senior Software Developer

Saint Louis, MO · On-site +1

$53 - $70/hr

Senior Software Developer(s) to design custom software solutions based on client requirements. This ... with Java services and an Angular user interface. Individuals will apply advanced theoretical ...

SV Tech Systems Inc

Senior Java Software Engineer.

Clayton, MO · On-site

$116K - $153K/yr

Senior Java Software Engineer. Location: Weldon or Clayton, MO Duration: Long term Contract Face to Face interview. Responsibilities As a Senior Software Engineer on the Vehicle Management Team, you ...

next page

Showing results 1-20

All JobsSoftware Developer Java JobsJunior Software Developer Java JobsJunior Software Developer Java Jobs in Saint Charles, MO

Junior Software Developer Java information

See Saint Charles, MO salary details

$57.4K

$100.6K

$151.6K

How much do junior software developer java jobs pay per year?

As of Jul 11, 2026, the average yearly pay for junior software developer java in Saint Charles, MO is $100,588.00, according to ZipRecruiter salary data. Most workers in this role earn between $71,100.00 and $100,300.00 per year, depending on experience, location, and employer.

What are some common challenges faced by Junior Software Developers working with Java, and how can they overcome them?

Junior Software Developers working with Java often encounter challenges such as understanding complex codebases, managing version control with tools like Git, and applying best practices for clean and efficient code. To overcome these obstacles, it's helpful to actively participate in code reviews, seek guidance from senior developers, and make use of online resources and documentation. Joining stand-up meetings and collaborating closely with teammates can also accelerate learning and help new developers adapt to the team's workflow.

What are the key skills and qualifications needed to thrive as a Junior Software Developer (Java), and why are they important?

To thrive as a Junior Software Developer (Java), you need a solid understanding of Java programming, algorithms, and object-oriented principles, often supported by a degree in computer science or related field. Familiarity with development tools like Eclipse or IntelliJ IDEA, version control systems such as Git, and knowledge of build tools like Maven or Gradle is often required. Strong problem-solving abilities, willingness to learn, and effective communication skills help junior developers collaborate and adapt quickly. These skills are crucial for building reliable software, integrating smoothly into development teams, and growing within the role.

What is the difference between Junior Software Developer Java vs Junior Software Developer Python?

AspectJunior Software Developer JavaJunior Software Developer Python
Required CredentialsBachelor's in CS or related field, Java certifications (optional)Bachelor's in CS or related field, Python certifications (optional)
Work EnvironmentEnterprise applications, backend development, large-scale systemsData analysis, scripting, web development, AI/ML projects
Employer & Industry UsageFinancial services, enterprise software, telecomTech startups, data science firms, research institutions
Common Search & ComparisonYesYes

Both roles typically require a bachelor's degree in computer science or related fields. Java developers often work on enterprise-level applications in industries like finance and telecom, while Python developers focus on data analysis, scripting, and AI projects in startups and research. The choice depends on your career interests and industry focus.

What does a Junior Software Developer Java do?

A Junior Software Developer Java is an entry-level programmer who specializes in building, testing, and maintaining software applications using the Java programming language. They typically work under the supervision of senior developers and contribute to coding, debugging, and documentation. Their responsibilities often include fixing bugs, writing unit tests, and collaborating with team members to deliver functional software solutions. This role is ideal for individuals who have a basic understanding of Java and are eager to gain professional experience in software development.
What are popular job titles related to Junior Software Developer Java jobs in Saint Charles, MO? For Junior Software Developer Java jobs in Saint Charles, MO, the most frequently searched job titles are:
What job categories do people searching Junior Software Developer Java jobs in Saint Charles, MO look for? The top searched job categories for Junior Software Developer Java jobs in Saint Charles, MO are:
What cities near Saint Charles, MO are hiring for Junior Software Developer Java jobs? Cities near Saint Charles, MO with the most Junior Software Developer Java job openings:
Junior Software Developer Java jobs near you
Infographic showing various Junior Software Developer Java job openings in Saint Charles, MO as of July 2026, with employment types broken down into 81% Full Time, 8% Part Time, 1% Temporary, and 10% Contract. Highlights an 82% Physical, 3% Hybrid, and 15% Remote job distribution, with an average salary of $100,588 per year, or $48.4 per hour.

Junior Software Engineer 621

Freedom Technology Solutions Group

Saint Louis, MO • Hybrid

Other

Re-posted 17 days ago

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 Junior Software Developer applies expertise to multiple 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.
  • 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).
  • 0-3 years software development experience.
  • 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 

Apply