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Junior Software Development Jobs in Missouri (NOW HIRING)

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Senior Software Development Engineer

O Fallon, MO · On-site +1

$114K - $151K/yr

Title and Summary Senior Software Development Engineer Overview The Senior Software Development ... Mentor junior developers and support onboarding activities. Troubleshoot and resolve complex ...

Stellar IT Group

Software Engineer

Saint Louis, MO · On-site

Drive best practices in coding standards, architecture, and software development processes. * Mentor junior engineers and contribute to team growth through knowledge sharing and technical guidance.

H&R Block

*Software Engineer

Kansas City, MO · On-site

Responsible for the end-to-end development of software components including making independent ... and mentor junior team members on debugging and unit testing strategies. Develop scalable full ...

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Junior Software Development information

See Missouri salary details

$19.2K

$74K

$138.9K

How much do junior software development jobs pay per year?

As of Jul 25, 2026, the average yearly pay for junior software development in Missouri is $73,986.00, according to ZipRecruiter salary data. Most workers in this role earn between $51,381.00 and $88,829.00 per year, depending on experience, location, and employer.

What are some typical challenges faced by junior software developers in their first year, and how can they overcome them?

Junior software developers commonly encounter challenges such as adapting to new codebases, understanding team workflows, and managing task priorities. It can be overwhelming to navigate complex projects or unfamiliar tools, but seeking guidance from senior team members and actively participating in code reviews can help. Proactively asking questions, utilizing company documentation, and setting aside time for continuous learning are effective strategies to overcome these hurdles. Embracing a growth mindset and viewing mistakes as learning opportunities will also contribute to a smoother transition into the role.

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

To thrive as a Junior Software Developer, you need a solid understanding of programming fundamentals, problem-solving abilities, and a relevant degree or coding bootcamp experience. Familiarity with languages such as Java, Python, or JavaScript, and version control systems like Git, is typically required. Strong communication, teamwork, and a willingness to learn are crucial soft skills for growth in this role. These skills and qualities are essential for delivering effective software solutions, collaborating with team members, and adapting to evolving technologies.

What is a Junior Software Developer?

A Junior Software Developer is an entry-level professional who assists in designing, coding, testing, and maintaining software applications under the supervision of more experienced developers. They typically work as part of a development team, learning best practices and gaining experience with various programming languages and tools. Junior developers are responsible for writing basic code, fixing bugs, and participating in code reviews while building their technical skills and knowledge of software development processes.

What is the difference between Junior Software Development vs Junior Web Developer?

AspectJunior Software DevelopmentJunior Web Developer
Required SkillsProgramming languages, software design, debuggingHTML, CSS, JavaScript, basic backend knowledge
Work EnvironmentSoftware companies, tech startups, IT departmentsWeb agencies, tech companies, freelance projects
CertificationsComputer Science degree, coding bootcampsWeb development courses, certifications like HTML, CSS
Common UsageDeveloping software applications, systemsBuilding websites, web applications

Junior Software Development and Junior Web Developer roles share foundational programming skills and often require similar certifications. However, Junior Software Developers typically work on broader software projects across various platforms, while Junior Web Developers focus specifically on website and web application development. Both roles are common entry points in the tech industry, with overlapping skills but different specialization areas.

What are the most commonly searched types of Software Development jobs in Missouri? The most popular types of Software Development jobs in Missouri are:
What cities in Missouri are hiring for Junior Software Development jobs? Cities in Missouri with the most Junior Software Development job openings:
Junior Software Development jobs near you
Infographic showing various Junior Software Development job openings in Missouri as of July 2026, with employment types broken down into 1% As Needed, 85% Full Time, 12% Part Time, and 2% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $73,986 per year, or $35.6 per hour.

Junior Software Engineer 621

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 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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