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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 ...

Software Technology Inc

Java Developer

Maryland Heights, MO · On-site

$49.25 - $63.75/hr

... for Java EE Developers, GitHub, Jira, Jenkins, shell scripting. Requires advanced knowledge of ... software solutions. Provide mentorship and coaching to entry, junior and associate level team ...

Tanisha Systems

Java Software Developer

Saint Louis, MO · Hybrid

$50 - $55/hr

Java Software Developer III 1st Preference - St Louis - 4 days in the office 2nd Preference- Denver- 4 days in the office Pay Rate $50-55/Hr JC 158569 Domain Telecom Domain is must About the Role ...

aqua IT

Software Developer

Saint Louis, MO · On-site

Primary responsibilities will involve coding, developing, integrating, and debugging software ... Experience programming in C++, Java, Typescript, and Bash * Experience developing in the following ...

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 ...

Navstar

Junior/Mid Software Engineer

Saint Louis, MO · On-site

Software Engineer Full description are you passionate about cutting-edge technology and solving ... Proven 1-6 years experience in developing software using modern languages such as python, java, and ...

DCS Corp

Senior Level Software Developer

Saint Louis, MO

$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 ...

Samprasoft

Senior Java Developer

Saint Charles, MO

$54 - $68.75/hr

Leads software engineering projects and creates the development and delivery of enhanced software ... Object-oriented design and programming with Java, J2EE - web technologies, web framework * Solid ...

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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 Jun 19, 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 June 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $100,588 per year, or $48.4 per hour.

Junior Software Engineer

Freedom Technology Solutions Group

Saint Louis, MO • Hybrid

Other

Posted 25 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 

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