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

Samprasoft

Python Developer

O Fallon, MO · On-site

$47 - $64.75/hr

Expert Python programmer in a Unix environment * With proven track record in ML pipeline design including LSF and NiFi * With experience in designing large-scale data-intensive applications * With ...

ArchKey Solutions

Senior Python Developer

Fenton, MO · On-site

$116K - $156K/yr

SR. PYTHON DEVELOPER This position is based out of our St Louis, MO office About ArchKey ArchKey is one of the nation's largest privately held specialty trade installation and integrated facility ...

ArchKey Solutions LLC

Senior Python Developer

Fenton, MO

$116K - $156K/yr

Description SR. PYTHON DEVELOPER This position is based out of our St Louis, MO office About ArchKey ArchKey is one of the nation's largest privately held specialty trade installation and integrated ...

ArchKey Solutions

Senior Python Developer

Fenton, MO · On-site

$116K - $156K/yr

SR. PYTHON DEVELOPER This position is based out of our St Louis, MO office About ArchKey ArchKey is one of the nation's largest privately held specialty trade installation and integrated facility ...

Archkey Solutions LLC

Senior Python Developer

Fenton, MO · On-site

$116K - $156K/yr

Description SR. PYTHON DEVELOPER This position is based out of our S t Louis, MO office About ArchKey ArchKey is one of the nation's largest privately held specialty trade installation and integrated ...

Varsity Tutors

Python Tutor

Saint Louis, MO · Remote

$18 - $40/hr

Ability to explain Pythonic programming conventions, decorators, and generators while preparing ... Familiar with Python curricula at introductory through advanced levels and common challenges such ...

ECS

Junior Software Developer, Applications

O Fallon, IL · On-site

$62K - $81K/yr

Experience scripting languages such as Python, BASH, Perl, Powershell * Knowledge of Configuration ... junior developers with constructive code reviews and code theory discussions

Kemper

Python Engineer Manager

Saint Louis, MO

... engineering, data analysis or a similar role Proven experience in managing technical team and mentoring. * 3+ years experience in Python development, with experience creating python-based ...

APC Integrated

Junior SQL Developer

O Fallon, MO · On-site

$62K - $81K/yr

Junior SQL Developer Position: Jr. SQL Developer Location: O'Fallon, MO (On-Site) Reports to: Implementation Manager Position Status: Exempt About Us: Automotive Product Consultants (APC) provides an ...

New

Superprof

Python Private Tutoring Jobs

Edwardsville, IL · On-site

$47.25 - $65/hr

We are looking for students, professionals, retirees or anyone with a passion to share, to join the largest community of teachers worldwide! If you have free time and want to share your knowledge, we ...

Superprof

Python Private Tutoring Jobs

Saint Louis, MO · On-site

$48.75 - $67.25/hr

We are looking for students, professionals, retirees or anyone with a passion to share, to join the largest community of teachers worldwide! If you have free time and want to share your knowledge, we ...

Pwc

GenAI Python Systems Engineer-Manager

Saint Louis, MO · On-site

$99K - $232K/yr

... DevOps pipelines with cloud services - Enhancing cloud resources for cost and performance Travel Requirements Up to 80% Job Posting End Date The salary range for this position is: $99,000 - $232,000.

Purple Drive

REACT DEVELOPER

Saint Louis, MO · On-site

Conduct code reviews, mentor junior developers, and ensure code quality. * Identify and implement ... Java, Python, Golang, C * Architecture & Patterns: MVC, Dependency Injection, Lazy Loading, API ...

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Junior Python Developer information

See Saint Louis, MO salary details

$23.3K

$86.5K

$133.7K

How much do junior python developer jobs pay per year?

As of Jun 24, 2026, the average yearly pay for junior python developer 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 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
Infographic showing various Junior Python Developer job openings in Saint Louis, MO as of June 2026, with employment types broken down into 79% Full Time, 5% Part Time, 5% Temporary, and 11% Contract. Highlights an 95% In-person, and 5% Remote job distribution, with an average salary of $86,504 per year, or $41.6 per hour.
Python Developer

Python Developer

Samprasoft

O Fallon, MO • On-site

$47 - $64.75/hr

Other

Posted 22 days ago

Job description

Mastercard Python Contractor

Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential.

The Internal AI team is looking for an experienced Python contractor to help implement our redesign of the mission critical Settlement Predictor application. The ideal candidate is highly experienced in designing large-scale data intensive applications with particular proven track record in microservice development. The candidate needs to be passionate about technical detail, must be highly motivated, intellectually curious, and analytical.

Role
  • Redesign the backlend and microservice architecture currently in production
  • Optimize scheduling and implement event-driven architecture
  • Revisit current REST architecture
  • Improve parallelization where possible to improve throughput
  • Improve fault tolerance, logging and restartability.
All About You

This position requires talent who is:

  • Expert Python programmer in a Unix environment
  • With proven track record in ML pipeline design including LSF and NiFi
  • With experience in designing large-scale data-intensive applications
  • With parallel programming experience with Python in Unix

Corporate Security Responsibility: Every person working for, or on behalf of, Mastercard is responsible for information security. All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and therefore, it is expected that the successful candidate for this position must:

  • Abide by Mastercards security policies and practices;
  • Ensure the confidentiality and integrity of the information being accessed;
  • Report any suspected information security violation or breach, and
  • Complete all periodic mandatory security trainings in accordance with Mastercards guidelines.

Open to H1B/OPT EAD/H1B transfers. For GC/USC/ H4 EAD they should be local to MO. There would be a Glider test. They must be strong in PYTHON. LOCALS ONLY AND MUST be in the office 5 DAYS A WEEK. Please email resumes to Nelson.dcosta@disys.

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