Jacek is available for hire

Jacek Gulij

Verified Expert in Engineering

Virtual Reality (VR) Developer

Mosina, Poland

Toptal member since June 1, 2022

Expertise

Augmented Reality Virtual Reality Game Development C#Git Agile Android Java HoloLens iOS REST APIs C++

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, Virtual Reality, Unity, Agile, Android, iOS, Git...

SoftServe

C#, Unity, Augmented Reality, Agile, Git, C++, Code Architecture, Optimization...

Setapp

Unity, Augmented Reality, Virtual Reality, C#, Android, iOS, Git, Mentorship...

Experience

Augmented Reality - 5 years Android - 5 years Unity - 5 years C# - 5 years Virtual Reality - 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, Virtual Reality, 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, 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, Virtual Reality, 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, Virtual Reality, Android, iOS, Java, HoloLens, Git, REST APIs, Code Architecture, Agile, Meta Quest, Azure, Optimization

Experience

Black Iris (Mobile Game)

https://play.google.com/store/apps/details?id=com.playmogulgames.blackiris&hl=pl

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, Virtual Reality, Mentorship, Leadership, Code Architecture, Game Development, Optimization, Project Planning, Recruitment, Meta Quest, Digital Publishing

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