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Web Developer Internship Jobs in O Fallon, MO (NOW HIRING)

CACI

Junior Systems Integrator

Saint Louis, MO · On-site

$58K - $115K/yr

Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph ... Exposure to databases, APIs, or web technologies. Coursework or projects involving GIS or ...

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How much do web developer internship jobs pay per hour?

As of Sep 4, 2026, the average hourly pay for web developer internship in O'Fallon, MO is $42.21, according to ZipRecruiter salary data. Most workers in this role earn between $32.40 and $51.06 per hour, depending on experience, location, and employer.

What is a web developer internship?

A Web Developer Internship is a temporary position designed for students or recent graduates to gain practical experience in building and maintaining websites and web applications. Interns typically work under the supervision of experienced developers and may assist with coding, testing, debugging, and designing web pages. This role provides valuable hands-on exposure to industry tools, programming languages, and best practices while helping interns develop their technical and teamwork skills. Successful completion of a web developer internship can enhance a candidate's resume and increase their chances of securing a full-time web development role.

What is a web developer internship?

In a web developer internship, you work with professional developers, designers, and project managers to support the development of a website and learn the skills of the trade. As an intern, you may assist with coding under the direction of a professional computer programmer, test existing code, format graphics for web use, or communicate with clients about the project. Your responsibilities may also involve testing new technology for potential use in the web development project. Some interns perform additional clerical duties as needed.

What are the typical projects and tasks assigned to a web developer intern, and how do they contribute to the overall team?

Web developer interns often work on a variety of tasks such as assisting with website updates, debugging code, creating new web pages, and implementing design changes under the guidance of senior developers. These projects allow interns to gain hands-on experience with web technologies like HTML, CSS, JavaScript, and sometimes frameworks like React or Angular. Interns usually collaborate closely with designers, back-end developers, and project managers, contributing to real-world projects that impact the organization's digital presence. This collaborative environment helps interns develop both technical skills and an understanding of professional workflows, setting a strong foundation for future career growth.

What are the key skills and qualifications needed to thrive as a web developer intern, and why are they important?

To thrive as a Web Developer Intern, you need a solid understanding of HTML, CSS, JavaScript, and a foundational grasp of web development principles, often supported by coursework or self-taught projects. Familiarity with version control systems like Git and exposure to frameworks such as React or Angular are highly beneficial. Strong problem-solving abilities, willingness to learn, and effective communication skills help interns collaborate and adapt in team environments. These skills are crucial for contributing to real-world projects, learning quickly, and building a successful foundation for a web development career.

Can I be a web developer internship with no experience?

Web developer internships often do not require prior professional experience and are designed for beginners. Candidates typically need basic knowledge of HTML, CSS, and JavaScript, and demonstrating a portfolio or personal projects can improve chances of acceptance.

How to get a web developer internship?

To secure a web developer internship, build a portfolio showcasing your projects, learn relevant skills such as HTML, CSS, JavaScript, and frameworks, and apply to internships through company websites, job boards, or university career centers. Having a basic understanding of version control tools like Git and a willingness to learn are also beneficial.
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Web Developer Internship jobs near you
Infographic showing various Web Developer Internship job openings in O'Fallon, MO as of August 2026, with employment types broken down into 1% Internship, 78% Full Time, 16% Part Time, 1% Temporary, and 4% Contract. Highlights an 82% Physical, 4% Hybrid, and 14% Remote job distribution, with an average salary of $87,792 per year, or $42.2 per hour.

Software Engineer I - Full Stack

Midtown Home Improvements, Inc.

Wentzville, MO • On-site

$45K - $60K/yr

Full-time

Medical, Retirement, PTO

Re-posted 15 days ago

Job description

Software Engineer I - Full Stack
Location: Wentzville, MO - ON SITE
Job Type: Full-Time
Salary: $45,000-$60,000 per year, based on relevant experience and demonstrated skills
Build Real Software. Grow Fast.
Midtown Home Improvements is a fast-growing roofing and general contracting company with more than 300 employees and five locations.
Our Technology Department builds proprietary software used throughout the company every day. We are looking for a Software Engineer I - Full Stack (Junior Full-Stack Developer) who has a solid foundation in software development and wants the opportunity to grow by working on real production applications.
This is not an internship, and you will not spend your time doing practice projects. You will contribute to software used by real employees, solve real business problems, and work directly with experienced developers who can help you grow.
This position is 100% on site in Wentzville, Missouri. Applicants must already live within reasonable commuting distance of Wentzville. This position is not remote and relocation candidates will not be considered.
What You'll Do
  • Build and improve features for internal business applications.
  • Develop frontend interfaces using Vue and Nuxt.
  • Build backend APIs and business logic using Node.js and NestJS.
  • Work with PostgreSQL, Prisma, and Redis.
  • Fix bugs, troubleshoot production issues, and improve existing applications.
  • Use Git, pull requests, testing, and code review as part of normal development.
  • Work directly with internal users to understand problems and build practical solutions.
  • Learn unfamiliar technologies when a project requires them.

You are not expected to already be an expert in every technology we use.
Our Stack
Our primary stack includes:
  • TypeScript / JavaScript
  • Vue 3 / Nuxt
  • Node.js / NestJS
  • Prisma
  • PostgreSQL
  • Redis
  • Tailwind CSS
  • Docker
  • Git
  • AI-assisted development tools

Experience with all of these is not required.
If you have experience with React, Angular, Express, Fastify, another SQL database, or similar technologies, those skills transfer well to our environment.
AI-Assisted Development
AI-assisted development is a normal part of our workflow.
We use approved AI tools for research, coding, debugging, documentation, testing, and problem-solving. We expect developers to use these tools effectively while still understanding, reviewing, testing, and taking responsibility for the work they ship.
Who We're Looking For
This role is designed for an early-career developer who can already build working software but still has plenty to learn.
You may be a good fit if you:
  • Have around 0-2 years of professional software development experience.
  • Have completed a strong coding bootcamp, computer science program, or substantial self-directed development work.
  • Have built meaningful web applications beyond basic tutorials.
  • Understand JavaScript or TypeScript fundamentals.
  • Have worked with at least one modern frontend framework.
  • Have some backend and database experience.
  • Understand basic Git workflows.
  • Can debug problems instead of immediately giving up when something breaks.
  • Are comfortable asking questions, receiving feedback, and learning from more experienced developers.
  • Want meaningful responsibility instead of being limited to tiny isolated tasks.
  • Currently lives within reasonable commuting distance of Wentzville, MO and is able to work on-site full-time.
What We Don't Expect
You do not need:
  • Five years of experience.
  • Prior professional experience with our exact technology stack.
  • A computer science degree.
  • To already know every tool we use.
  • To be able to design an entire enterprise application by yourself on day one.

We would rather hire someone with strong fundamentals, curiosity, and good judgment than someone who simply knows the right buzzwords.
Why Work at Midtown?
  • $45,000-$60,000 annual salary, based on relevant experience and demonstrated skills
  • 100% employer-paid health insurance for the employee
  • 401(k) matching
  • Paid time off
  • Paid holidays
  • Annual international company trip - Mexico, Jamaica, and more
  • Work on real software used every day throughout the company.
  • Direct access to users and decision-makers.
  • A modern development stack.
  • Significant hands-on experience across frontend, backend, databases, APIs, infrastructure, and AI-assisted development.
  • A small team where your work will actually matter.

For someone early in their development career, this role provides an opportunity to gain a large amount of practical production experience quickly.
How to Apply
Please send:
  • Your resume.
  • A GitHub profile, portfolio, or examples of software you have built, if available.
  • A short note telling us what you have built and why this position interests you.

Important: This is an on-site position in Wentzville, Missouri. Only applicants who already live within reasonable commuting distance of Wentzville will be considered.
Midtown Home Improvements is an Equal Opportunity Employer.

Apply