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Trainee Junior Javascript Developer Jobs in Missouri

Staffingine LLC

WCS Developer

Springfield, MO · On-site

Provide technical leadership and mentoring to junior engineers Required Skills: * Minimum 8 years ... HTML/HTML5,J2EE,Java,JavaScript,MySQL,Apache Struts, HCL Commerce, Java Server Pages (JSP ...

Tech Consulting

Be Seen First

Junior Data Engineer

Dexter, MO · On-site

$30 - $35/hr

Entry-Level Python Developer Fulltime Candidate Must be open to relocate We are looking for a ... Knowledge of HTML, CSS, and JavaScript is a plus. * Strong analytical and problem-solving skills.

New

Leidos

Entry Level Software Developer

Saint Louis, MO · On-site

$57K - $104K/yr

The Leidos Maritime ASET team has an opening for a junior (entry level) software developer to work ... Applicant must possess competence with Python and JavaScript/TypeScript. Other duties include ...

Deloitte

CyberArk Senior Consultant

Kansas City, MO · On-site

$53 - $70.25/hr

... programming using languages such as Java, Python, or JavaScript/TypeScript. • Experience with ... junior or mid-level developers, leading code reviews, and providing development feedback. • ...

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Trainee Junior Javascript Developer information

What types of projects can a Trainee Junior Javascript Developer expect to work on during their first year?

As a Trainee Junior Javascript Developer, you will typically start by assisting with smaller tasks such as bug fixes, writing unit tests, or implementing basic features under the guidance of senior developers. Over time, you'll gain exposure to collaborative projects like developing user interfaces, integrating APIs, or maintaining front-end codebases using frameworks such as React or Vue.js. These projects help you build technical skills while learning best practices in code review, version control, and agile workflows. Regular mentorship and code feedback are common, fostering rapid professional growth in a supportive team environment.

What does a Trainee Junior Javascript Developer do?

A Trainee Junior Javascript Developer is an entry-level professional who assists in building and maintaining web applications using JavaScript. They typically work under the guidance of more experienced developers, learning to write clean code, debug simple issues, and use frameworks like React or Node.js. This role is designed to help individuals develop foundational programming skills and gain practical experience in real-world software development projects.

What is the difference between Trainee Junior Javascript Developer vs Junior Web Developer?

AspectTrainee Junior Javascript DeveloperJunior Web Developer
Required CredentialsBasic coding knowledge, often in training or bootcampSome experience or formal education in web development
Work EnvironmentInternship or entry-level training programFull-time role in a development team
Employer UsageTraining programs, startups, or companies hiring entry-levelEstablished companies, agencies, or startups

In summary, a Trainee Junior Javascript Developer is typically in training or an internship, focusing on learning JavaScript basics, while a Junior Web Developer has more experience and handles broader web development tasks. Both roles serve as entry points but differ in experience level and responsibilities.

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

To thrive as a Trainee Junior Javascript Developer, you need a solid understanding of JavaScript fundamentals, HTML, CSS, and a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, basic knowledge of frameworks such as React or Node.js, and exposure to development environments are typically required. Strong problem-solving skills, eagerness to learn, and effective communication set candidates apart in this role. These skills and qualities are crucial for adapting to fast-paced development teams and building a foundation for future growth in software engineering.
What are popular job titles related to Trainee Junior Javascript Developer jobs in Missouri? For Trainee Junior Javascript Developer jobs in Missouri, the most frequently searched job titles are:
What job categories do people searching Trainee Junior Javascript Developer jobs in Missouri look for? The top searched job categories for Trainee Junior Javascript Developer jobs in Missouri are:
What cities in Missouri are hiring for Trainee Junior Javascript Developer jobs? Cities in Missouri with the most Trainee Junior Javascript Developer job openings:
Trainee Junior Javascript Developer jobs near you
Infographic showing various Trainee Junior Javascript Developer job openings in Missouri as of July 2026, with employment types broken down into 85% Full Time, 3% Part Time, 1% Temporary, and 11% Contract. Highlights an 82% Physical, 3% Hybrid, and 15% Remote job distribution.

Junior Software Engineer 621

Freedom Technology Solutions Group

Saint Louis, MO • Hybrid

Other

Re-posted 23 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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