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Junior Python React Jobs in Saint Louis, MO (NOW HIRING)

Leidos

Entry-Level Software Developer

Saint Louis, MO · On-site

$57K - $104K/yr

The Leidos FS2 Aero team has an opening for a junior (entry level) software developer to work on ... The applicant must possess competence with Python and should have working knowledge JavaScript ...

Leidos

Mid-Level Software Engineer

Fenton, MO · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Maryville, IL · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Saint Louis, MO · On-site

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Saint Louis, MO · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Collinsville, IL · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Madison, IL · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

South Roxana, IL · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Bridgeton, MO · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Maryland Heights, MO · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Arnold, MO · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Ballwin, MO · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

Leidos

Mid-Level Software Engineer

Dupo, IL · On-site

$87K - $157K/yr

Participate in code reviews and mentor junior developers as needed. * Resolve various tasks as ... Python, Java, or JavaScript * Advanced Programming: Go * Front-end and Back-end Frameworks: React ...

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All JobsPython React JobsJunior Python React JobsJunior Python React Jobs in Saint Louis, MO

Junior Python React information

See Saint Louis, MO salary details

$23.3K

$86.5K

$133.7K

How much do junior python react jobs pay per year?

As of Aug 28, 2026, the average yearly pay for junior python react in Saint Louis, MO is $86,504.00, according to ZipRecruiter salary data. Most workers in this role earn between $65,100.00 and $84,600.00 per year, depending on experience, location, and employer.

What does a junior Python React developer do?

A Junior Python React developer is responsible for assisting in building web applications using Python for the backend and React.js for the frontend. Their duties often include writing and maintaining code, fixing bugs, and collaborating with senior developers to implement new features. They may also help with testing, troubleshooting, and optimizing application performance. Typically, they are still learning best practices and are expected to grow their technical skills on the job.

What are the key skills and qualifications needed to thrive as a junior Python React developer?

To thrive as a Junior Python React Developer, you need a solid understanding of Python programming, JavaScript, and fundamental web development concepts, often supported by a relevant degree or coding bootcamp experience. Familiarity with frameworks and tools like Django or Flask for Python, React.js, version control systems like Git, and basic RESTful API integration is typically required. Strong problem-solving abilities, eagerness to learn, and effective teamwork and communication skills help you stand out in this role. These skills are crucial for building reliable, scalable web applications and contributing effectively to collaborative software development projects.

What are some common challenges a junior Python React developer might face when working on full-stack projects?

As a Junior Python React developer, one common challenge is efficiently integrating the backend (often using Python frameworks like Django or Flask) with the frontend built in React. This requires clear understanding of RESTful APIs, asynchronous data handling, and managing state in React applications. Additionally, adapting to collaborative workflows, such as version control with Git and participating in code reviews, can be a learning curve. However, these challenges are great learning opportunities that help you improve your technical and teamwork skills.

What is the difference between Junior Python React vs Junior JavaScript Developer?

AspectJunior Python ReactJunior JavaScript Developer
Required CredentialsBasic Python and React knowledge, possibly some certificationsJavaScript fundamentals, HTML, CSS, and related certifications
Work EnvironmentWeb development, data-driven applications, full-stack projectsFront-end web development, UI/UX design, client-side scripting
Employer & Industry UsageTech companies, startups, SaaS providersWeb agencies, tech firms, startups
Search & Comparison IntentJob roles involving Python and React skills at entry levelEntry-level JavaScript roles focusing on front-end development

Junior Python React roles typically focus on combining Python backend skills with React frontend development, suitable for full-stack projects. In contrast, Junior JavaScript Developer roles mainly emphasize front-end development using JavaScript, HTML, and CSS. Both roles are common in web development environments but differ in technical focus and required skills.

What are popular job titles related to Junior Python React jobs in Saint Louis, MO?

For Junior Python React jobs in Saint Louis, MO, the most frequently searched job titles are:

What job categories do people searching Junior Python React jobs in Saint Louis, MO look for?

The top searched job categories for Junior Python React jobs in Saint Louis, MO are:

Junior Python React jobs near you
Infographic showing various Junior Python React job openings in Saint Louis, MO as of August 2026, with employment types broken down into 1% Internship, 87% Full Time, 4% Part Time, and 8% Contract. Highlights an 81% Physical, 5% Hybrid, and 14% Remote job distribution, with an average salary of $86,504 per year, or $41.6 per hour.

TS/SCI -Entry-Level Software Developer (Python Required)

Saint Louis, MO • On-site

Bailey Information Technology Consultants
Guided Missile and Space Vehicle Manufacturing • 1 - 10 employees
Learn more about Bailey Information Technology Consultantsexternal

$47 - $65/hr

Full-time

Posted 29 days ago

Job description

Entry-Level Software Developer (Python Required)
Location: St. Louis, MO
Clearance: HSPD-12 / ability to obtain TS/SCI w/ Poly
Required Certifications: DD8140 compliant Certification (Security+) w/in 3 months
Level: T1 (Target)
Job Description:
The BIT, LLC is recruiting for a junior (entry level) software developer to work on the design and coding with software solutions for the Aeronautical Navigation Office.The ideal candidate has a familiarity with and a baseline understanding of software development concepts, developing coding skills using different tools, and ambition towards future projects in support of the mission.
Responsibilities:
The applicant must possess competence with Python and should have working knowledge JavaScript/TypeScript.Other duties include working with Docker, AWS Cloud, and familiarity with JSON APIs. This role includes creation and documentation of new and existing functionality within software version control repositories (GitLab) and utilizing DevOps principals and tools to deliver new features within an Agile construct. Participate in program Agile software development initiatives (standup, planning, Increment planning) to support innovation and enhancement of custom applications through iteration/functionality testing. Primary responsibilities will involve developing configurations and features for processing Safety of Navigation (SoN) data through an Optical Character Recognition (OCR), Machine Learning (ML) application. This role includes API development and database integration for interaction with React frameworks, using various open-source packages for visualization and data filtering and code modifications that shall apply best practices in unit and build testing. Participate and collaborate with team members to assess tickets to ensure proper testing and delivery of functionality per User Story Acceptance Criteria
Core Qualifications:
  • Minimum 1 year of experience with Python.
  • Experience with modern JavaScript development framework.
  • Experience with unit testing, continuous integration tools, and Gitlab version control
  • Proactive self-starter demonstrates a positive, willing attitude and excellent oral and written communication skills.
  • Experience in either software development projects or software integration projects in a service-oriented environment (Cloud, SOA, Web-Services) or virtualization environment.
  • Requires BS degree and 2+ years of prior relevant experience or Masters with less than 2 years of prior relevant experience; OR 4 years of related experience.
  • Organizational Skills: Can plan and prioritize work. Follow tasks to their logical conclusion and make sure that everything has been done to the right standard. Good attention to detail.
  • Communications: Ability to communicate clearly and efficiently with team members and clients, verbally and in writing. Able to present ideas in a variety of ways depending upon audience and context.

Preferred Qualifications:
  • At least 1 year of experience with Optical Character Recognition (OCR) and/or Computer Vision (CV) Technologies (AWS Textract, Tesseract, OpenCV)
  • At least 1 year of experience with DoD Aeronautical Datasets
  • At least 2 years of experience with AWS cloud formation templates and/or AWS CDK.
  • Experience with 2D data (HTML Canvas, OpenLayers, Leaflet, GeoJSON, Godot)
  • AWS Solutions or DevOps certification
  • Team Collaboration tools (Jira, Confluence)
  • Ability to obtain TS/SCI with Polygraph

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