Grzegorz Górnisiewicz

Available to hire

I'm Grzegorz Górnisiewicz, a Senior Unity Developer with over 10 years of hands-on experience building mobile apps and games for Android and iOS, with a strong focus on AR and gamified user experiences.

About

I’m Grzegorz Górnisiewicz, a Senior Unity Developer with over 10 years of hands-on experience building mobile apps and games for Android and iOS, with a strong focus on AR and gamified user experiences. I design, implement, and optimize Unity-based solutions, collaborating with UX/UI designers and backend teams to deliver polished products with solid performance.

I’m passionate about turning complex requirements into reliable software, improving production stability, and maintaining high code quality across the entire lifecycle of applications. I have successfully boosted AR performance (up to about 400% in AR mode) and have deep experience with AR Foundation, ARKit, ARCore, and Vuforia, as well as performance profiling, memory and GC optimization, and scalable architecture.

  • 16 years' experience
  • Joined July 2025

Industry experience

  • Software & Internet
  • Media & Entertainment
  • Other
  • Gaming
  • Education

Work experience· 8 roles

Unity Developer · Kings of PolandJan 2025 – Present · 1 yr 11 mos

Educational mobile application with gamified presentation of historical content; card-based UI and user engagement mechanics; Android deployment.

Unity Developer · Words FestSep 2024 – Present · 2 yrs 3 mos

Mobile gamified learning application; integration of external services, including AI-generated speech; end-to-end development and release on Android.

Unity Developer · Hololoot ARMar 2023 – May 2023 · 3 mos

Mobile AR app development with gamified interaction mechanics and UI overlays; integration with external systems and APIs; deployed to Android and iOS.

Unity Developer · Nuwa AROct 2022 – Sep 2023 · 1 yr
Senior Unity Developer · ViSULiZR (UK)Jan 2019 – Jan 2025 · 6 yrs 1 mo
iOS Developer, IoT Specialist (Contract) · Locky sp. z o.o.Oct 2017 – Jan 2019 · 1 yr 4 mos
Senior Unity Developer / Senior Software Engineer · Self-employed / ContractorJan 2010 – Present · 16 yrs 11 mos
Freelance Software Developer (Unity, AR, Games, IoT, Mobile) · FreelancerJan 2010 – Present · 16 yrs 11 mos

Education

Multi-disciplinary studies in Computer Science, Nuclear Physics, Mechanical Engineering and Robotics · AGH University of Cracow1995 – 2002

Certifications and awards

WO2020260405A1 - Image Cropping Method and System2030 – 2026
PL236117B1 - Method for Detection of the Lock Locking State and Device for Detecting Change of the Lock Locking State2030 – 2026
WO2020260405A1 – Image Cropping Method and System2030 – 2026
PL236117B1 – Method for Detection of the Lock Locking State2030 – 2026

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