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Javascript Developer Internship Jobs in Wisconsin

Batteries Plus

IT Application Developer I

Hartland, WI · On-site

... internships) Proficiency with: Languages / Frameworks * .NET 4+, .NET Core, C# * ASP.NET, MVC, Web ... HTML, CSS, JavaScript, XML Tools / Technologies * Visual Studio (VS / VS Code) * SQL Server ...

Batteries Plus

IT Application Developer I

Hartland, WI · On-site

... internships) Proficiency with: Languages / Frameworks * .NET 4+, .NET Core, C# * ASP.NET, MVC, Web ... HTML, CSS, JavaScript, XML Tools / Technologies * Visual Studio (VS / VS Code) * SQL Server ...

Batteries Plus

IT Application Developer I

Hartland, WI · On-site

... internships) Proficiency with: Languages / Frameworks * .NET 4+, .NET Core, C# * ASP.NET, MVC, Web ... HTML, CSS, JavaScript, XML Tools / Technologies * Visual Studio (VS / VS Code) * SQL Server ...

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Javascript Developer Internship information

What are the key skills and qualifications needed to thrive as a Javascript Developer Intern, and why are they important?

To thrive as a Javascript Developer Intern, you need a solid understanding of JavaScript fundamentals, HTML, CSS, and basic programming concepts, typically demonstrated through coursework, personal projects, or a relevant degree in computer science or a related field. Familiarity with development tools such as Git, code editors (VS Code), and frameworks like React or Node.js is often expected. Strong problem-solving abilities, eagerness to learn, and effective communication make an intern stand out. These skills and qualities are crucial for adapting to real-world development environments, collaborating with teams, and contributing valuable work during the internship.

What types of projects and tasks can I expect to work on during a Javascript Developer Internship?

As a Javascript Developer Intern, you'll typically be involved in a variety of tasks ranging from building interactive web components and debugging code to collaborating on front-end features with senior developers. Interns often participate in code reviews, write unit tests, and contribute to both new and ongoing projects using modern frameworks like React, Vue, or Angular. You'll also have opportunities to learn best practices in version control (such as Git) and agile development methodologies. This hands-on experience will help you develop both technical and teamwork skills essential for a career in web development.

What does a Javascript Developer Intern do?

A Javascript Developer Intern assists in designing, developing, and testing web applications using JavaScript and related technologies. Their responsibilities often include writing code, fixing bugs, learning modern frameworks like React or Node.js, and collaborating with senior developers on various projects. Interns gain hands-on experience, improve their programming skills, and learn how to work in a professional software development environment. This role is ideal for students or recent graduates looking to start a career in web development.

What is the difference between Javascript Developer Internship vs Javascript Developer?

AspectJavascript Developer InternshipJavascript Developer
Required CredentialsTypically students or recent graduates, some coding knowledgeProfessional experience, often a degree in Computer Science or related field
Work EnvironmentInternship programs, entry-level projects, mentorshipFull-time employment, team-based projects, ongoing responsibilities
Employer & Industry UsageTech companies, startups, internships for skill developmentTech firms, software companies, industry standard role
Search & Comparison IntentLearning, entry-level opportunities, internshipsCareer advancement, full-time roles, skill application

The main difference between a Javascript Developer Internship and a Javascript Developer is the experience level and employment status. Internships are designed for students or recent graduates seeking hands-on experience, often with mentorship, while Javascript Developers are full-time professionals responsible for developing and maintaining software projects. Internships serve as a stepping stone into the industry, whereas full-time roles require more experience and responsibility.

What are the most commonly searched types of Javascript Developer jobs in Wisconsin? The most popular types of Javascript Developer jobs in Wisconsin are:
What are popular job titles related to Javascript Developer Internship jobs in Wisconsin? For Javascript Developer Internship jobs in Wisconsin, the most frequently searched job titles are:
What job categories do people searching Javascript Developer Internship jobs in Wisconsin look for? The top searched job categories for Javascript Developer Internship jobs in Wisconsin are:
What cities in Wisconsin are hiring for Javascript Developer Internship jobs? Cities in Wisconsin with the most Javascript Developer Internship job openings:
Javascript Developer Internship jobs near you
Infographic showing various Javascript Developer Internship job openings in Wisconsin as of May 2026, with employment types broken down into 63% Full Time, 20% Part Time, and 17% Contract. Highlights an 63% Physical, 4% Hybrid, and 33% Remote job distribution.
UI / Front-End Developer

UI / Front-End Developer

Metalcraft of Mayville, Inc.

Mayville, WI • On-site

Full-time

Posted 19 days ago

Metalcraft of Mayville rating

6.8

Company rating: 6.8 out of 10

Based on 24 frontline employees who took The Breakroom Quiz

Job description

Overview
Metalcraft is hiring a UI / Front-End Developer to support the development of modern, user-friendly web applications. This role will focus on building responsive user interfaces and improving the overall user experience across internal and customer-facing applications.
The UI Developer will work closely with the Software Developer and Software Architect to implement front-end features, translate design concepts into functional interfaces, and contribute to the modernization of existing applications. This position is ideal for someone with strong JavaScript and front-end framework experience who is looking to grow their career in application development.
Work is onsite only, in Mayville, Wisconsin. Not remote.
Responsibilities
  • Develop and maintain responsive, user-friendly web interfaces for enterprise applications.
  • Translate UI/UX designs and wireframes into high-quality, functional front-end code.
  • Build and maintain components using modern JavaScript frameworks such as React, Angular, or Next.js.
  • Collaborate with backend developers to integrate REST APIs and application services.
  • Assist in updating and modernizing legacy front-end code and user interfaces.
  • Ensure applications are optimized for performance, usability, and accessibility.
  • Troubleshoot and resolve front-end bugs and UI performance issues.
  • Participate in code reviews and development team collaboration.
  • Work with version control systems and issue tracking tools to manage development tasks.
  • Contribute to improving front-end development standards, reusable components, and UI consistency.
  • Support testing and deployment of applications across development and production environments.

Qualifications
  • Bachelor's degree in Computer Science, Information Systems, Web Development, or related field (or equivalent experience).
  • 1-3 years of front-end development experience or relevant internship/project experience.
  • Experience with HTML, CSS, and JavaScript.
  • Familiarity with modern front-end frameworks such as React, Angular, or Next.js.
  • Experience integrating REST APIs into front-end applications.
  • Understanding of responsive design and cross-browser compatibility.
  • Basic knowledge of version control systems (Git).
  • Strong attention to detail and interest in building intuitive user experiences.
  • Good communication skills and the ability to collaborate within a development team.
  • Experience in a manufacturing or industrial environment is a plus.
  • Prefer candidate with experience with UI frameworks or component libraries.
  • Familiarity with Azure-based application environments preferred.
  • Basic understanding of Agile or Scrum development practices, preferred.
  • Exposure to enterprise or manufacturing systems is a plus.

Equal opportunity employer - minorities/females/veterans/individuals with disabilities/sexual orientation/gender identity. PM17
Job Expectations
Physical Activity:
Lift/Carry: regularly 25 lbs routinely; 50 lbs occasionally
Push/Pull: regularly 25 lbs routinely; 50 lbs occasionally
Reach overhead: occasionally
Climb: occasionally
Squat/bend/kneel: regularly
Sit: frequently
Stand: frequently
Walk/move about: regularly
Work Environment:
While generally in an office environment, you can beregularly exposed to varying temperature conditions between 60-100 degrees Fahrenheit, loud noise, moving machinery parts, airborne particles, and fumes from production equipment.

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