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Junior Software Developer Java Jobs in Florissant, MO

ECS

Junior Software Developer, Applications

O Fallon, IL · On-site

$62K - $81K/yr

Everforth ECS Federal is looking for a Junior software developer that develops, creates, and ... Basic Knowledge of Java, HTML5 technologies, Spring, RHEL, SQL, JavaScript, XML, Agile ...

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 ...

Argyle Infotech

Java Developer

Saint Louis, MO · On-site

$49.50 - $64.25/hr

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

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All JobsJunior Software Developer Java JobsJunior Software Developer Java Jobs in Florissant, MO

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 Jun 19, 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 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 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 June 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $98,520 per year, or $47.4 per hour.
Junior Software Developer, Applications

Junior Software Developer, Applications

ECS

O Fallon, IL • On-site

$62K - $81K/yr

Full-time

Posted 3 hours ago

Job description

Everforth ECS Federal is looking for a Junior software developer that develops, creates, and modifies general computer applications software or specialized utility programs. Analyze user needs and develop software solutions. Design software or customize software for client use with the aim of optimizing operational efficiency. May analyze and design databases within an application area, working individually or coordinating database development as part of a team. May collaborate directly with customers on requirements gathering and software issues. Assists with software manual creation and maintenance. Work is performed under supervision
  • CompTIA Security+ Certification (or ability to obtain within 6 months)
  • 0-3 years of development experience
  • Bachelor's degree or work experience substitute
  • Basic Knowledge of Java, HTML5 technologies, Spring, RHEL, SQL, JavaScript, XML, Agile methodologies, WebLogic, Gradle/Maven/Ant, Python.
  • Experience with or ability to learn ticketing system (ServiceNow)
  • Ability to follow documented processes, SOPs and escalation procedures
  • Basic troubleshooting skills and logical problem-solving ability
  • Knowledge of DoD transportation data and business practices
  • Ability to Design, Code and Test requirements usingLinux and Windows operating systems,
  • Knowledge of Server technologies like WebLogic, Tomcat and Apache and Container technologies like Docker, Kubernetes
  • Familiar with Version control systems like Git, Build and deployment orchestration tools like Jenkins and Build and package managers like Gradle and Artifactory
  • Experience scripting languages such as Python, BASH, Perl, Powershell
  • Knowledge of Configuration Management tools like Ansible, Puppet, Chef, Terraform
  • Experience writing Java, JavaScript, and SQL or PL/SQL
  • Experience developing Infrastructure as Code (IaC) and Configuration as Code (CaC)
  • Strong understanding of test-driven development and test automation to ensure adequate test coverage (unit, integration, system, load, functional and exploratory)
  • Able to work with the development manager and lead architect on architecture changes and understanding process and application design including grooming requirements in the architecture that were not provided in detail or not fully defined
  • Ability to manage workloads and the creation of program specifications from which the developers work and add them to the work tracker adding flowcharts, class diagrams, Entity Relationship Diagrams (ERDs), and a variety of other visual techniques (mockups) to clearly convey the meaning to the developer.
  • Able to work with development manager to manage backlogs, estimates and other SDLC requirements for development, provide estimates on requirements for iteration/build planning, and Integrate and deploy software in a complex architecture
  • Capable to review code, perform code reviews and code check-ins to ensure the integrity of commits, builds, etc.
  • Ability to learn, understand and refine the capabilities of other developers on the team including ability to mentor and coach intermediate and junior developers with constructive code reviews and code theory discussions

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