Intern Java Developer Banking Jobs in Dayton, OH

Currently enrolled in an accredited associate's, bachelor's, or technical certificate?

Part-time, 20+ hrs/week during standard business hours, In-office (Covington, OH)

Write code that ships to real clients. While you're still in school!

Most internships hand you a sandbox project that gets deleted when you leave. This one doesn't.

As a Software Developer Intern at Marias Technology, you'll contribute to actual client work — software solutions, system integrations, and data extraction tools built for insurance companies that depend on them running correctly. Your code goes through real review, real testing, and real deployment.

You'll learn what school can't easily teach: how professional software actually gets built. Version control discipline. Code review as a two-way conversation. Writing something maintainable enough that the person who inherits it six months from now isn't cursing your name.

What you'll work on

Working closely with the Software Services team and under the supervision of senior developers, you'll:

• Assist in developing software solutions and system integrations for insurance company clients
• Learn to build solutions that let multiple systems communicate and share data effectively
• Complete assigned coding tasks in Java, SQL, TypeScript, JavaScript, and other technologies — with support and code review from the team
• Read and interpret technical specifications, business requirements, and system documentation to understand project scope
• Write clean, maintainable code that meets quality standards
• Test and debug your work with guidance from senior developers
• Document code, solutions, and technical processes clearly for the team
• Gain exposure to RESTful APIs, webhook integrations, and data exchange between systems
• Learn about cloud platforms (Azure/AWS) and observe deployment and monitoring practices
• Practice Git version control best practices and participate in basic CI/CD workflows
• Shadow experienced developers during code reviews and technical discussions
• Attend weekly mentoring sessions with the Software Services Manager

The mentorship is the point

You'll have a standing weekly one-on-one with the Software Services Manager. Not a check-the-box meeting — actual time to ask what you didn't understand, get direction on what to learn next, and talk through the technical challenges you're stuck on.

Beyond that, you'll sit in on code reviews and technical discussions with developers who have been doing this for years. You'll be expected to ask questions when you're stuck. We'd far rather answer them than debug the consequences of a guess.

What you need

Required

• Currently enrolled in or recently completed an Associate's or Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related technical field
• Completed foundational coursework in programming, data structures, and algorithms
• Coursework or academic projects using one or more of: Java, Python, JavaScript/TypeScript, C#, SQL
• Solid grasp of core programming concepts — variables, loops, functions, objects, basic data structures
• Availability for a minimum of 20 hours per week during standard business hours

Nice to have

• Exposure to or coursework in APIs, databases, and object-oriented programming principles
• Familiarity with Git, or the ability to pick up version control quickly
• Willingness to learn additional languages and frameworks as needed (Java, VB.NET, Python, PHP, Angular, Node.js)
• Curiosity about cloud platforms (Azure/AWS), CI/CD workflows, and modern development practices
• Personal coding projects, hackathons, or open-source contributions — we genuinely look at these

Who tends to thrive here

• You ask when you're stuck. Not after three days of silent struggling
• You care about quality, not just whether it compiles
• You take feedback well. Code review isn't criticism, it's how the work gets better
• You think through problems logically before reaching for help
• You communicate. Status, blockers, and questions — before they become surprises
• You're reliable. When you commit to a deadline, you either hit it or flag it early
• You actually want to do this for a living. This isn't a checkbox on a graduation requirement

What you get

• $22–$24/hour, paid semi-monthly via direct deposit
• Weekly one-on-one mentoring with the Software Services Manager
• Real production experience across multiple languages, frameworks, and cloud platforms — the kind that fills a resume with substance instead of coursework
• Employee store discounts: Glacier View Coffee (10%), Pacific Coast Surf Shop (25%), Elias & Oliver Boutique (25%)
• A schedule built around students — 20+ hours a week during business hours
• A genuine path to full-time. This internship is designed with the potential to transition into a full-time Software Developer role

Please note: as a part-time internship, this position is not eligible for medical, dental, vision, or PTO benefits.