Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Kevin Höpfner, a technically oriented freelancer with a solid background in mechanical engineering and over five years of experience in app and AR development. I focus on interactive learning systems, technical visualization, and prototyping, and I’m driven by solving demanding technical challenges in multidisciplinary teams. I thrive in project-driven environments, manage cross-functional collaboration between external partners, and enjoy turning complex ideas into intuitive, future-facing digital experiences.…Hi, I’m Kevin Höpfner, a technically oriented freelancer with a solid background in mechanical engineering and over five years of experience in app and AR development. I focus on interactive learning systems, technical visualization, and prototyping, and I’m driven by solving demanding technical challenges in multidisciplinary teams. I thrive in project-driven environments, manage cross-functional collaboration between external partners, and enjoy turning complex ideas into intuitive, future-facing digital experiences.

Kevin Höpfner

App Developer, Project Manager, Game Developer, +5





Hi, I’m Kevin Höpfner, a technically oriented freelancer with a solid background in mechanical engineering and over five years of experience in app and AR development. I focus on interactive learning systems, technical visualization, and prototyping, and I’m driven by solving demanding technical challenges in multidisciplinary teams. I thrive in project-driven environments, manage cross-functional collaboration between external partners, and enjoy turning complex ideas into intuitive, future-facing digital experiences.…Hi, I’m Kevin Höpfner, a technically oriented freelancer with a solid background in mechanical engineering and over five years of experience in app and AR development. I focus on interactive learning systems, technical visualization, and prototyping, and I’m driven by solving demanding technical challenges in multidisciplinary teams. I thrive in project-driven environments, manage cross-functional collaboration between external partners, and enjoy turning complex ideas into intuitive, future-facing digital experiences.

Available to hire

Hi, I’m Kevin Höpfner, a technically oriented freelancer with a solid background in mechanical engineering and over five years of experience in app and AR development. I focus on interactive learning systems, technical visualization, and prototyping, and I’m driven by solving demanding technical challenges in multidisciplinary teams.

I thrive in project-driven environments, manage cross-functional collaboration between external partners, and enjoy turning complex ideas into intuitive, future-facing digital experiences.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

German

Fluent

English

Advanced

French

Advanced

Russian

Intermediate

Spanish; Castilian

Beginner

Latin

Beginner

Work Experience

Technical Project Coordinator

June 1, 2024 - Present

Interface between external development partners; conducted code reviews (React, HTML/CSS, Unreal Engine); managed feature planning; facilitated sprint meetings within a SCRUM team. Project discontinued due to insolvency.

3D Integration & UI Design Lead (Trade Show)

June 1, 2022 - September 10, 2025

End-to-end development of 3D integration and UI design for trade show presentations. AR solar panel model with live performance data; 3D world with gyroscope navigation; AR racing mini short film.

UI/UX Developer

June 1, 2021 - September 10, 2025

Educational Platform – Interactive Learning App (Prototype); UI/UX optimization, maintenance, responsive design, testing.

Developer (Community Sports App) at Nürnberg

August 1, 2019 - September 10, 2025

Development of an innovative sports brace; design and construction of a test rig for validation (LabVIEW).

Intern, Lean & Project Management at GE Power Conversion

September 1, 2015 - September 10, 2025

Education Focus: Calculation / Simulation; GPA: 1.3 (German scale) – on hold since 10/2018 due to freelancing work.

Technical Project Coordinator at Independent contractor / Berlin

June 1, 2024 - Present

Interfaces with external development partners; conducts code reviews (React, HTML/CSS, Unreal Engine); manages feature planning; facilitates SCRUM sprint meetings; contributes to cross-disciplinary AR/UI projects.

Full-stack Unity Developer at Self-employed / Berlin

June 30, 2022 - September 10, 2025

Full-stack Unity development focusing on UI/UX, AR, backend design; interactive 3D objects; live AR demos; integrates 3D environments and AR navigation; builds teacher dashboards and Firebase-based tracking; optimized for low-end devices; conducted internal beta testing.

Ionic Developer – Educational Platform (Prototype) at Berlin – Interactive Learning App

June 1, 2021 - September 10, 2025

Developed interactive learning prototype; UI/UX optimization; maintenance; ensured responsive design and testing; focused on local sports events and social networking features.

Developer – Community Sports App at Nürnberg

August 1, 2019 - September 10, 2025

Developed an innovative sports bracelet prototype; designed and built a test rig for validation (LabVIEW).

Intern – Lean & Project Management at GE Power Conversion (Berlin)

September 1, 2015 - September 10, 2025

Education focus: calculation/simulation; GPA 1.3 (German scale).

Technical Project Coordinator

June 1, 2024 - Present

Freelance technical project coordination with a focus on full-stack Unity development (UI/UX, AR, backend, feature design), interactive 3D objects, a point-based rewards system, dynamic UI, and AR learning app concepts with gamification mechanics. Served as the interface between external development partners; conducted code reviews (React, HTML/CSS, Unreal Engine), managed feature planning, and facilitated sprint meetings with a SCRUM team. Project discontinued due to insolvency.

End-to-End Developer – E-Learning Platform & AR App

June 1, 2022 - September 10, 2025

End-to-end development of 3D integration and UI design for trade show presentations. AR solar panel model with live performance data; 3D world with gyroscope navigation; AR racing mini short film.

AR Demo Projects & Trade Fair Prototypes

June 1, 2022 - September 10, 2025

AR demo projects and trade fair prototypes; designed and constructed test rigs for validation and prototyping (LabVIEW/LABVIEW-related workflows) and contributed to trade show preparations.

Intern – Lean & Project Management at GE Power Conversion

September 1, 2015 - September 10, 2025

Education-focused internship with emphasis on calculations, simulations, and Lean/PM fundamentals; GPA noted as 1.3 on German scale during the internship period.