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Java Internship Jobs in St Louis, MO (NOW HIRING)

Digital Co-op

Saint Louis, MO ยท Hybrid

$21 - $30/hr

Within our Digital department, we host dozens of interns and co-ops annually. Our collegiate co ... NET, SQL, COBOL, Java, C#, typescript, Java script, HTML, CSS, MVC, Angular, PowerShell and more)

Digital Co-op

Saint Louis, MO ยท On-site

$21 - $30/hr

Within our Digital department, we host dozens of interns and co-ops annually. Our collegiate co ... NET, SQL, COBOL, Java, C#, typescript, Java script, HTML, CSS, MVC, Angular, PowerShell and more)

Digital Co-op

Saint Louis, MO ยท Hybrid

$21 - $30/hr

Within our Digital department, we host dozens of interns and co-ops annually. Our collegiate co ... NET, SQL, COBOL, Java, C#, typescript, Java script, HTML, CSS, MVC, Angular, PowerShell and more)

... work, internships, or academic projects. * Experience developing APIs and backend services ... Java * Experience building and supporting ETL/ELT pipelines and enterprise data integration ...

The purpose of the internship is to provide meaningful professional hands-on experience to students ... May code using C/C++/C#/Java to complete coding assignments * Source code management of new and/or ...

The purpose of the internship is to provide meaningful professional hands-on experience to students ... May code using C/C++/C#/Java to complete coding assignments * Source code management of new and/or ...

Java Internship information

See St Louis, MO salary details

$15

$55

$75

How much do java internship jobs pay per hour?

As of Aug 24, 2026, the average hourly pay for java internship in St. Louis, MO is $55.12, according to ZipRecruiter salary data. Most workers in this role earn between $47.69 and $61.68 per hour, depending on experience, location, and employer.

What is a Java internship?

A Java Internship is a temporary position, usually aimed at students or recent graduates, that provides hands-on experience working with Java programming in a real-world environment. Interns typically assist with software development tasks, bug fixing, and sometimes participate in designing and testing Java applications. This role helps individuals gain practical skills, industry knowledge, and professional networking opportunities that can aid in securing a full-time job in software development.

What types of projects do Java interns typically work on, and how do these projects support their learning and professional growth?

Java interns are often assigned to real-world projects such as developing web applications, enhancing existing codebases, or automating testing processes. These projects are designed to provide hands-on experience with Java frameworks like Spring or Hibernate, version control systems, and collaborative development tools. Interns usually work closely with experienced developers, participate in code reviews, and attend team meetings, which helps them gain valuable feedback and understand industry best practices. This environment not only sharpens their technical skills but also exposes them to effective teamwork and agile development methodologies, setting a strong foundation for future career opportunities.

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

To thrive as a Java Intern, you need a solid understanding of Java programming, basic knowledge of object-oriented principles, and enrollment in or completion of a computer science or related degree. Familiarity with IDEs like Eclipse or IntelliJ IDEA, version control systems such as Git, and basic database concepts is often expected. Strong problem-solving skills, eagerness to learn, and effective communication set exceptional interns apart. These skills and qualities enable interns to contribute meaningfully to projects, adapt to team workflows, and accelerate their professional growth.

What is the difference between Java Internship vs Java Developer?

AspectJava InternshipJava Developer
Required CredentialsTypically pursuing or recently completed a degree in Computer Science or related fieldBachelor's degree in Computer Science or related, often with certifications
Work EnvironmentEntry-level, training-focused, often part-time or temporaryFull-time, professional development, project-based
Employer & Industry UsageInternships offered by tech companies, startups, and organizations for trainingFull-time roles in software development companies, IT departments, or tech firms
Common Search & Comparison IntentUnderstanding entry points into Java developmentSeeking full-time Java development roles

In summary, a Java Internship is an entry-level, training-focused position designed for students or recent graduates to gain practical experience. A Java Developer is a full-time professional role requiring more experience and responsibility in developing Java applications.

Is Java still in demand?

Java remains a highly in-demand skill for software development, especially in enterprise applications, Android app development, and backend systems. Many companies seek Java developers with knowledge of frameworks like Spring and experience with cloud environments, ensuring ongoing job opportunities for Java interns and professionals.

What does a Java internship do?

A Java internship involves assisting with software development using Java programming language, often including tasks like coding, debugging, and testing applications. Interns gain experience with development tools, collaborate with teams, and improve their programming skills in a real-world environment.
Infographic showing various Java Internship job openings in St. Louis, MO as of August 2026, with employment types broken down into 6% Internship, 67% Full Time, 24% Part Time, 1% Temporary, and 2% Contract. Highlights an 88% Physical, 1% Hybrid, and 11% Remote job distribution, with an average salary of $114,656 per year, or $55.1 per hour.

Electrical Construction Business Support Intern- St. Louis

Guarantee Electrical

Saint Louis, MO โ€ข On-site

$13.50 - $18.25/hr

Internship

Retirement

Posted 6 days ago


Job description

Partner. Energize. Deliver.At Guarantee Electrical Company, we love providing students with an opportunity to gain hands-on experience through our internship program. We are currently seeking Interns who have interest in pursuing careers in Innovation and IT Solutions, Marketing, Human Resources and Safety to join our St. Louis, MO team and provide direct support to our preconstruction team, and project managers, and field/lead planners. As an intern, you will aid in a wide range of responsibilities from project development, design and estimating to the planning and supervision of installation on project sites.Guarantee seeks ambitious, innovative individuals with the ability to grow and maintain value-added relationships with our team and external customers. Click here to learn more about our internships!This internship is for Summer 2027Responsibilities: Innovation and IT SolutionsA strong interest in technology, innovation, and problem-solving.Basic understanding of IT systems, software development, and emerging technologies.Familiarity with tools like Microsoft Office Suite, Google Viewpoint, or any project management software is a plus.Excellent written and verbal communication skills.Strong analytical, problem-solving, and critical thinking abilities.Ability to work effectively both independently and as part of a team.Enthusiasm to learn and contribute to a fast-paced, dynamic work environment.Exposure to coding or programming languages (e.g., Python, Java, etc.).Previous experience with innovation processes, IT consulting, or research projects is a plus.MarketingCollaborate with the marketing team across all positions - Proposals, Digital Marketing, Communications, and administrative tasks.Asset capture and filing into Marketing Sharepoint.Event Support: Assist in planning and promoting company events, trade shows, or client meetings.Market Research: Conduct research on industry trends, competitors, and target audiences to inform marketing strategies.Data Entry - Assist with updating Quickbase with pertinent information.Human ResourcesSupport efforts in converting paper files to digitalUpdate HRIS files and information as it relates to data and data integrityDevelop, review and proof various HR documentsHelp develop recruitment materials such as job postingsAttend team meetings and other meetings that may be requiredHelp manage onboarding and offboarding processes with HR GeneralistsAssist with drafting offer letters and notifications of candidates in processAssist HR staff with company events, training, and meetings with set-up/take-down, room reservations, and food or refreshments.SafetyDevelop meaningful, lasting relationships with our workforce and the GECO safety team through the demonstrated care and compassion for their well-being and prosperity.Serve and uphold the core value of safety by supporting Guarantee's core safety and health systems.Report, file, and monitor insurance claims.Assist with OCIP/CCIP enrollments for projects as needed.Administer eCompliance system by monitoring reports, updating access for new hires/terms and share analytics from the software.Maintaining and updating injury logs.Assist with prequalification and related systems.Support training and education efforts by scheduling, tracking, and filing related documentation.Assist Fleet Safety Manager with fleet related tasks, i.e., MVR's, input auto incidents, roadside systems / telematics.Create and format safety bulletins, incident alerts, and internal messaging regarding safety initiatives and events.Preferred Skills:Excellent verbal and written communication.High level of organization.Ability to prioritize work.Must work cooperatively with others in a team environment.Can speak effectively before groups of customers or employees of the organization.Education:Must be a current student pursuing a degree in Electrical, Construction Management, Construction Technology, Electrical estimating / Engineering, Occupational Safety or similar program of study.Benefits:401k with employer matchWhat you'll gain as an Intern:Real world experience in a corporate environment.Exposure to all aspects of the construction team.Opportunities to work on real-time projects that will make an impact on our company and employees.Face time with key members of the Guarantee Electrical organization.Networking opportunities with peers and experienced operations professionals.