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

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 ...

Apex Systems

DevOps Engineer

Saint Louis, MO · On-site

$50 - $68.50/hr

Provide guidance and mentorship to junior team members as needed * Ensure Platform Performance and ... Experience with scripting or programming languages (e.g., Java, Python, Groovy) * Experience with ...

GRVTY

Senior Data Scientist

Saint Louis, MO · On-site

You will leverage senior-level Python programming skills to build production-ready tools, automate ... Experience mentoring junior data scientists or leading technical modernization initiatives.

nimble

Data Engineer

Chesterfield, MO · On-site +1

$113K - $136K/yr

... Python or Scala code for complex transformations and data processing Support Power BI and analytics ... Maintain 99.5%+ pipeline uptime; mentor junior engineers; drive architectural improvements for ...

Nimble Solutions

Data Engineer

Chesterfield, MO · On-site

$113K - $136K/yr

... Python or Scala code for complex transformations and data processing • Support Power BI and ... Maintain 99.5%+ pipeline uptime; mentor junior engineers; drive architectural improvements for ...

Nimble Solutions

Data Engineer

Chesterfield, MO · On-site +1

$113K - $136K/yr

... Python or Scala code for complex transformations and data processing • Support Power BI and ... Maintain 99.5%+ pipeline uptime; mentor junior engineers; drive architectural improvements for ...

GRVTY

Senior Data Scientist

Saint Louis, MO

You will leverage senior-level Python programming skills to build production-ready tools, automate ... Experience mentoring junior data scientists or leading technical modernization initiatives.

GRVTY

Senior Data Scientist

Saint Louis, MO · On-site

You will leverage senior-level Python programming skills to build production-ready tools, automate ... Experience mentoring junior data scientists or leading technical modernization initiatives.

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Junior Python Developer information

See Saint Louis, MO salary details

$22.8K

$84.3K

$130.3K

How much do junior python developer jobs pay per year?

As of Jul 19, 2026, the average yearly pay for junior python developer in Saint Louis, MO is $84,343.00, according to ZipRecruiter salary data. Most workers in this role earn between $63,500.00 and $82,500.00 per year, depending on experience, location, and employer.

What is a Junior Python Developer job?

A Junior Python Developer is an entry-level software developer who specializes in writing, testing, and maintaining code using the Python programming language. They typically work under the guidance of senior developers and assist in building applications, fixing bugs, and improving performance. Their responsibilities may include writing scripts, working with databases, and integrating third-party services. Strong problem-solving skills, knowledge of Python frameworks like Django or Flask, and familiarity with version control systems like Git are often required. Junior developers are expected to learn quickly and contribute to the development team while gaining hands-on experience.

What are the key skills and qualifications needed to thrive in the Junior Python Developer position, and why are they important?

To thrive as a Junior Python Developer, you need a solid foundation in Python programming, an understanding of computer science fundamentals, and often a relevant degree or coursework. Familiarity with version control systems like Git, basic experience with web frameworks such as Flask or Django, and knowledge of databases are commonly expected, while certifications like PCEP can be advantageous. Attention to detail, a willingness to learn, effective problem-solving, and strong communication skills are essential soft skills for this role. These competencies ensure you can contribute efficiently to software development projects, adapt to new challenges, and collaborate well within a development team.

What are the typical daily responsibilities of a Junior Python Developer?

As a Junior Python Developer, your daily tasks may include writing and testing code, fixing bugs, and participating in code reviews alongside more experienced developers. You'll often work on modules or features under the guidance of senior team members, attend stand-up meetings, and update project documentation as needed. Collaboration with frontend developers, QA testers, and project managers is common, especially when integrating systems or implementing new features. Over time, you can expect to take on more complex tasks and gradually build your expertise through mentorship and hands-on project work.

What are the most commonly searched types of Python Developer jobs in Saint Louis, MO? The most popular types of Python Developer jobs in Saint Louis, MO are:
What are popular job titles related to Junior Python Developer jobs in Saint Louis, MO? For Junior Python Developer jobs in Saint Louis, MO, the most frequently searched job titles are:
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What cities near Saint Louis, MO are hiring for Junior Python Developer jobs? Cities near Saint Louis, MO with the most Junior Python Developer job openings:
Junior Python Developer jobs near you
Entry Level Software Developer

Entry Level Software Developer

Leidos

Saint Louis, MO • On-site

$57K - $104K/yr

Full-time

Posted 12 days ago

Leidos rating

8.4

Company rating: 8.4 out of 10

Based on 149 frontline employees who took The Breakroom Quiz

56th of 451 rated business services

Job description

The Leidos Maritime ASET team has an opening for a junior (entry level) software developer to work on the design and coding with software solutions for 6 month - temporary to permanent hire position. 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.

Primary Responsibilities

  • Applicant must possess competence with Python and 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.

Basic Qualifications

  • Requires bachelors degree and 0+ years of prior relevant experience.

  • 0+ years of experience with Python.

  • 0+ years of experience with modern JavaScript development framework.

  • 0+ years of 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.

  • Organizational Skills: Can plan and prioritize work. Follows tasks to their logical conclusion and makes sure that everything has been done to the right standard. Good attention to detail.

  • Communications: Ability to communicate clearly and efficiently to team members and clients, verbally and in writing. Able to present ideas in a variety of ways depending upon audience and context.

  • US Citizenship required.

  • Ability to obtain and maintain a TS/SCI with Polygraph clearance.

Preferred Qualifications

  • 0+ years of experience with Optical Character Recognition (OCR) and/or Computer Vision (CV) Technologies (AWS Textract, Tesseract, OpenCV).

  • 0+ 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).

  • Active TS/SCI with Polygraph clearance.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:July 9, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:Pay Range $57,850.00 - $104,575.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

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About Leidos

Sourced by ZipRecruiter

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

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