Jacek Gulij, Developer in Mosina, Poland
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Jacek Gulij

Verified Expert  in Engineering

Virtual Reality (VR) Developer

Mosina, Poland

Toptal member since June 1, 2022

Expertise
Augmented RealityVirtual RealityGame DevelopmentC#GitAgile DevelopmentAndroidJavaMicrosoft DevelopmentiOSREST APIC++
Bio

Jacek is an exceptional Unity developer with 5 solid years of diverse commercial experience and 2 on leadership positions. He has vast technical knowledge of both VR/AR and mobile applications. Being a part of large-scale industrial projects, he understands the way technology facilitates commercial growth.

Portfolio

Lucid Reality Labs
C#, Augmented Reality (AR), Virtual Reality (VR), Unity, Agile, Android, iOS...
SoftServe
C#, Unity, Augmented Reality (AR), Agile, Git, C++, Code Architecture...
Setapp
Unity, Augmented Reality (AR), Virtual Reality (VR), C#, Android, iOS, Git...

Experience

  • Augmented Reality (AR) - 5 years
  • Android - 5 years
  • Unity - 5 years
  • C# - 5 years
  • Virtual Reality (VR) - 5 years
  • iOS - 5 years
  • Agile - 5 years
  • Leadership - 2 years

Availability

Part-time

Preferred Environment

Unity, Augmented Reality (AR), Virtual Reality (VR), C#, Android

The most amazing...

...project I've completed as a Unity Team Lead is a real-time 3D visualization of a real-life environment and its 5000 inhabitants.

Work Experience

Lead Unity Developer

2022 - 2024
Lucid Reality Labs
  • Directly supervised the work of six senior and regular Unity developers.
  • Implemented key features and improved the performance of existing solutions in a large legacy codebase.
  • Prioritized work and planned long-term development efforts.
  • Managed a shared codebase across multiple international teams.
  • Recruited talent and provided guidance to existing employees.
  • Introduced Agile practices and organized work in Jira.
  • Set up CI/CD with a release schedule and milestone presentations.
Technologies: C#, Augmented Reality (AR), Virtual Reality (VR), Unity, Agile, Android, iOS, Git, Mentorship, Recruitment, Java, Leadership, REST APIs, Code Architecture, Meta Quest, Optimization, Project Planning

Senior Unity Developer

2022 - 2022
SoftServe
  • Designed and implemented a Unity SDK and Editor plugin for one of the top Mixed Reality platforms on the market.
  • Applied solutions to complex problems in large legacy codebases.
  • Consulted on technical issues in an international setting.
Technologies: C#, Unity, Augmented Reality (AR), Agile, Git, C++, Code Architecture, Optimization, Project Planning

Unity Developer

2020 - 2022
Setapp
  • Designed and implemented features and architecture for multiple apps on VR and mobile platforms.
  • Managed the recruitment and mentoring of new team members and interns.
  • Optimized code, wrote shader programs, and applied code design patterns.
  • Discussed and implemented complex business requirements.
Technologies: Unity, Augmented Reality (AR), Virtual Reality (VR), C#, Android, iOS, Git, Mentorship, Recruitment, Leadership, REST APIs, Code Architecture, Digital Publishing, Agile, Java, Game Development, Meta Quest, Optimization, Project Planning

Unity Developer

2019 - 2020
Transition Technologiies PSC
  • Designed and implemented project architecture for multiple apps on VR, AR, mobile, and custom platforms.
  • Optimized code, applied code design patterns, and created prototypes for upcoming technologies.
  • Discussed and implemented complex business requirements.
Technologies: Unity, C#, Augmented Reality (AR), Virtual Reality (VR), Android, iOS, Java, HoloLens, Git, REST APIs, Code Architecture, Agile, Meta Quest, Azure, Optimization

Experience

Black Iris (Mobile Game)

I was the lead developer of a hyper-casual mobile game published on Google Play. The team consisted of four experts from various fields, and I managed their work. My key contributions were project architecture, gameplay systems, and integrations with third-party services.

AR Graph Visualization App

https://github.com/Jacykow/AR-Graph
Designed an AR app that enables data visualization in scientific papers in the form of 2D and 3D graphs. I was the lead programmer and manager in this project. My responsibilities included implementing shaders, designing the architecture, and mentoring the team.

Ice Master (Mobile Game)

https://www.gulij.com/#ice-master
I was the lead developer of a hyper-casual mobile game published on Google Play. The team consisted of six experts from various fields, and I managed their work. My key contributions were project architecture, gameplay systems, and integrations with third-party services.

Education

2021 - 2023

Master's Degree in Business Administration

Collegium Da Vinci - Poznań, Poland

2017 - 2021

Bachelor’s Degree in Computer Science

Poznań University of Technology - Poznań, Poland

Certifications

JULY 2023 - JULY 2026

Unity Certified Expert: Programmer

Unity

AUGUST 2022 - AUGUST 2025

Unity Certified Professional: Programmer

Unity

JULY 2020 - PRESENT

Microsoft Certified: Azure Fundamentals

Microsoft

Skills

Libraries/APIs

REST APIs

Tools

Git, HoloLens

Languages

C#, Java, C++

Frameworks

Unity

Paradigms

Agile

Platforms

Android, iOS, Azure

Other

Augmented Reality (AR), Virtual Reality (VR), Mentorship, Leadership, Code Architecture, Game Development, Optimization, Project Planning, Recruitment, Meta Quest, Digital Publishing

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