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Junior Software Developer Java Jobs in Florissant, MO

Worky

Senior Software Developer

O Fallon, IL · On-site

$110K - $120K/yr

We are seeking a Java Developer with experience developing Web applications to be part of the ... As a Senior Software Developer, the selected individual will work hands‑on with developer and ...

Meridian Systematics

Software Developer

Saint Louis, MO · On-site

$90K - $110K/yr

Software Developer - Enterprise Geospatial Solutions Location: On-Site About the Role Join our ... Advanced proficiency in at least one modern language (Python, Java, JavaScript, React, or .NET)

Meridian Systematics

Software Developer

Saint Louis, MO · On-site

$90K - $110K/yr

Software Developer - Enterprise Geospatial Solutions Location: On-Site About the Role Join our ... Advanced proficiency in at least one modern language (Python, Java, JavaScript, React, or .NET)

Meridian Systematics

Software Developer

Saint Louis, MO · On-site

$90K - $110K/yr

Vision insurance Software Developer - Enterprise Geospatial Solutions Location: On-Site About the ... Advanced proficiency in at least one modern language (Python, Java, JavaScript, React, or .NET)

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 ...

Pangaea

Java Software Engineer

Saint Louis, MO · On-site

$50.25 - $69/hr

Java Software Engineer We are currently in search of an experienced Software Engineer with a degree in Computer Science and 5+ years' experience developing JavaFX and/or Swing applications. The ...

Argyle Infotech

Senior Java Developer

Saint Louis, MO · On-site

$55.75 - $71/hr

Senior Java Developer St Louis, MO (Onsite from day 1) Interview Process: 3 rounds will be Zoom ... Grasp of software engineering skills in modular design, data structures, algorithms. Deep knowledge ...

Argyle Infotech

Senior Java Developer

Saint Louis, MO · On-site

$55.75 - $71/hr

Senior Java Developer St Louis, MO (Onsite from day 1) Interview Process: 3 rounds will be Zoom ... Grasp of software engineering skills in modular design, data structures, algorithms. Deep knowledge ...

The Timberline Group

Senior Software Developer

Saint Louis, MO · On-site

$51.75 - $68.25/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 ...

Ports North

Senior Software Engineer -Java

O Fallon, MO · On-site

$60 - $80/hr

Ensure software designs align with Mastercard's Enterprise Architecture and leverage enterprise ... Title Sr Java Developer Location O'Fallon, MO Client Industry Finance Compensation $60-80/hr #J ...

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Junior Software Developer Java information

See Florissant, MO salary details

$56.3K

$98.5K

$148.5K

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

As of Sep 13, 2026, the average yearly pay for junior software developer java in Florissant, MO is $98,520.00, according to ZipRecruiter salary data. Most workers in this role earn between $69,600.00 and $98,200.00 per year, depending on experience, location, and employer.

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 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 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 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 are popular job titles related to Junior Software Developer Java jobs in Florissant, MO?

For Junior Software Developer Java jobs in Florissant, MO, the most frequently searched job titles are:

What cities near Florissant, MO are hiring for Junior Software Developer Java jobs?

Cities near Florissant, 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 Florissant, MO as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 11% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $98,520 per year, or $47.4 per hour.

Senior Software Developer

O Fallon, IL • On-site

Worky
See more jobs at Workyexternal

$110K - $120K/yr

Other

Posted 26 days ago

Job description

Everforth ECS is seeking a Senior Software Developer to work in our O’Fallon, IL office.

ECS Federal LLC is looking for a Senior Software Developer who possesses and applies expertise on multiple complex work assignments. The ECS Team provides development and support of GATES, a mission-critical application providing cargo and passenger manifesting and in transit visibility requirements for the DoD. We are seeking a Java Developer with experience developing Web applications to be part of the larger team. Assignments may be broad in nature, requiring originality and innovation in determining how to accomplish tasks. Operates with appreciable latitude in developing methodology and presenting solutions to problems. Contributes to deliverables and performance metrics. As a Senior Software Developer, the selected individual will work hands‑on with developer and systems administrators to integrate our solutions and products for our government customer. Key responsibilities are to deliver DevSecOps pipeline solutions and proof of concepts for Continuous Integration/Configuration, Continuous Development, Continuous Delivery/Deployment, Continuous Testing, Continuous Security and Continuous Monitoring. The DevSecOps Engineer is also responsible for driving solutions that meet the customers' technical, financial and business requirements, and supporting a legacy system in the process of being modernized while being hosted in the cloud utilizing DevSecOps processes.

Salary Range: $110,000 - $120,000

General Description of BenefitsQualifications
  • Bachelor's Degree
  • Java, HTML5 technologies, Angular, Spring, RHEL, SQL, Oracle RDBMS, JavaScript, XML, Agile methodologies, WebLogic, Tomcat, Gradle/Maven/Ant, Python
  • Experience with DevSecOps pipeline
  • Secret Clearance
  • Security + Certification or the ability to obtain immediately following employment.
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