About Me

Justin T. Radler
Freelance Frontend Developer
I have 5 years of development experience and a B.Eng. in User Experience from Hochschule Aalen.
I don't start a project by diving straight into code and hoping for the best. First, I want to understand what the application does or needs to do, how its internal processes fit together, and where I can best involve the user in those workflows.
These questions belong at the start, not after implementation. The answers lay the foundation for an interface that helps users get their work done without unnecessary steps. The application should make day-to-day work easier, not waste time and money.
This approach is one of my greatest strengths, especially when working on complex technical applications. It combines what I learned during my degree in User Experience with my hands-on development experience. I consider technical processes and users' needs together, rather than in isolation.
My Focus
Frontend Development
I build new frontends and extend existing applications with React and TypeScript. API integration is part of that work.
React, TypeScript, Next.js, API integration
Interface Design
I structure an application's workflows and turn them into an interface concept. I can take on both the prototype and the implementation.
Workflows, prototypes, navigation, feedback
Modernization
I get to grips with existing software and the domain logic behind it. Then I improve its structure and usability, not just its appearance.
Understanding code, improving structure and usability
Collaboration
I clarify open requirements, incorporate feedback, and consider where the product is heading. I care about the overall result, not just whether a feature has been coded.
Communication, feedback, product understanding
I have also built and extended mobile apps with React Native and Expo, as well as interactive 3D and desktop applications. These experiences complement my focus on frontend development.
Experience & Education
2024 to present
Freelance Software Developer
Independent
Custom web and mobile applications, API integration, and modernization of existing software, from planning through delivery.
2022 to 2024
Software Developer
INNEO Solutions GmbH
Contributed to desktop and web software for processing and publishing 3D data, alongside mobile development for clients.
2020 to 2021
Software Development Internship
Studioo GmbH
Developed a Flutter application for iOS and Android.
2018 to 2022
B.Eng. in User Experience
Hochschule Aalen
Product design, user research, prototyping, and usability testing, supported by software development coursework.
Have a project in mind?
Let's discuss what you need and where I can help.