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Software Engineer Internship Jobs in O Fallon, MO

BAI

Software Engineer

Saint Louis, MO · On-site +1

$75K - $95K/yr

Software Engineer Reports To: Manager, Software Engineering BAI and RMA have come together as ProSight Financial Association, a leading industry organization whose purpose is to empower financial ...

CACI

Software Engineer

Saint Louis, MO · On-site

Software Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of ...

CACI

Software Engineer

Saint Louis, MO · On-site

Software Engineer Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of ...

ApplyMint

Software Engineer

Saint Louis, MO · On-site

$100 - $125/hr

The Software Engineer - Full Stack builds and supports web applications, APIs, business-tier components, and database solutions using Microsoft platform technologies and modern web development ...

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All JobsSoftware Engineer JobsSoftware Engineer Internship JobsSoftware Engineer Internship Jobs in O'Fallon, MO

Software Engineer Internship information

See O Fallon, MO salary details

$12

$23

$36

How much do software engineer internship jobs pay per hour?

As of Sep 7, 2026, the average hourly pay for software engineer internship in O'Fallon, MO is $23.78, according to ZipRecruiter salary data. Most workers in this role earn between $19.33 and $26.97 per hour, depending on experience, location, and employer.

What is a software engineer internship?

A Software Engineer Internship is a temporary position where students or entry-level professionals gain hands-on experience in software development. Interns typically work on real projects, write code, debug issues, and collaborate with engineering teams. The internship helps develop technical skills, knowledge of software development processes, and familiarity with industry tools. It also provides networking opportunities and can lead to full-time job offers.

What kinds of projects or tasks do software engineer interns typically work on during their internship?

Software Engineer Interns are often assigned to real-world projects that may include developing new features, fixing bugs, writing automated tests, or improving documentation. They usually work as part of a development team under the mentorship of experienced engineers, which allows them to participate in code reviews, agile meetings, and collaborative problem-solving sessions. The exact responsibilities may vary, but interns are regularly exposed to the full software development lifecycle and are encouraged to ask questions and contribute ideas. This hands-on experience not only builds technical skills but also prepares interns for full-time roles after graduation.

What are the key skills and qualifications needed to thrive in the software engineer internship position, and why are they important?

To thrive as a Software Engineer Intern, you need a solid understanding of programming languages (such as Java, Python, or C++), algorithms, data structures, and typically be pursuing or have a degree in computer science or a related field. Familiarity with version control systems like Git, integrated development environments (IDEs), and sometimes issue tracking tools is often expected. Strong problem-solving abilities, a willingness to learn, and effective communication are key soft skills that help interns excel in collaborative environments. These skills ensure interns can contribute meaningfully to technical projects, integrate well with engineering teams, and grow rapidly within the organization.

What are the most commonly searched types of Software Engineer jobs in O'Fallon, MO?

The most popular types of Software Engineer jobs in O'Fallon, MO are:

What cities near O'Fallon, MO are hiring for Software Engineer Internship jobs?

Cities near O'Fallon, MO with the most Software Engineer Internship job openings:

Software Engineer Internship jobs near you
Infographic showing various Software Engineer Internship job openings in O'Fallon, MO as of August 2026, with employment types broken down into 82% Full Time, 14% Part Time, and 4% Contract. Highlights an 85% Physical, 4% Hybrid, and 11% Remote job distribution, with an average salary of $49,456 per year, or $23.8 per hour.

2027 Summer Intern: Software Engineer

Vibehackers

Maryland Heights, MO • On-site

$250/hr

Other

Posted yesterday

New

Job description

Explicitly references "Vibe coding" and mentions AI-assisted coding environments — you'll use AI-driven tools for pattern analysis and development.

About the Role

Spectrum is hiring a paid, full-time software engineering intern for an 11-week summer program running May 26–August 6, 2027. The role involves building features across web, API, database and cloud stacks, working with AI-assisted tools, and participating in professional development, mentorship, and team projects.

Job DescriptionRole

Paid, full-time 11-week Software Engineer internship (May 26–August 6, 2027) contributing to workforce management, technician scheduling, and dispatch tools that support Spectrum’s field operations. Interns work on real business problems across web applications, APIs, databases, and cloud services while using modern development tools including AI-assisted coding environments.

Key Responsibilities
  • Build features across the full technology stack (web apps, APIs, databases, cloud services).
  • Use AI-assisted coding environments and AI-driven tools for pattern analysis and solution development.
  • Participate in the complete software development lifecycle: requirements, design, development, testing, and deployment.
  • Collaborate with experienced engineers and work within both a department team and an intern cohort.
  • Spend ~80% of time on department/team projects and ~20% on internship experiences (kickoff conference, professional development, networking, community service, cross-functional projects, final presentations).
Required Qualifications
  • Rising senior with expected graduation between December 2027 and May 2028.
  • Currently enrolled in an accredited college/university pursuing a bachelor’s degree.
  • Authorization to work in the U.S. without restrictions or need for future sponsorship.
  • Ability to travel locally to Spectrum intern development events and activities.
Preferred Qualifications
  • Experience with Python and/or Java.
  • Exposure to AI; the posting explicitly references “Vibe coding” and AI-assisted development.
  • Professional development sessions, mentorship, networking opportunities, and cohort-based experiences.
  • Opportunities for cross-functional projects, community service, and final presentations.
  • Spectrum indicates a comprehensive pay and benefits package for employees.

Python Java Databases Web applications APIs Cloud services AI-assisted coding environments AI / AI-driven tools Vibe coding

Skills

Software Development Full-Stack Development Software Development Lifecycle Testing Deployment Collaboration Communication Problem Solving Pattern Analysis AI-assisted Development Mentorship & Learning Networking

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