Kraków, PolandAvailable to work with your teamGamedev / Architecture / AI / XR / Unity / UE

Lead game developer / technical leader

I build games,
XR products
& tech teams.

I turn early concepts into reliable, scalable interactive products and help development teams deliver them.

Portrait of Mikołaj Musialik

Lead Game Developer and Technical Team Leader specializing in Unity, AI, XR, gameplay systems, technical architecture, cross-platform product development and workflow optimization.

7+Years in game development
Unity / C# / AI / JiraCore development stack
XR / Mobile / PCProduct platforms
Architecture & GameplayTechnical focus

Systems with
a reason to exist.

Selected product work across mixed reality, gameplay, multiplayer and technical research.

Person wearing a mixed-reality headset interacting with a virtual fire scenario in a living room
01

Mixed Reality / Healthcare / AI

CXRT

A working mixed-reality exposure therapy platform currently used by partner hospitals for clinical validation. It combines more than 10 therapeutic scenarios, a cross-platform therapist controller and a complete session-analysis dashboard.

Role
Lead Developer / Product Architect
Platforms
Meta Quest 3 / Apple Vision / iOS / Android
Collage of mobile games showing four colorful gameplay scenes and their game artwork
02

Mobile / Gamedev / Multiplayer / R&D

Mobile Games

Development across more than a dozen mobile games - from new productions and platform ports to maintenance and the continued development of live multiplayer titles, including Hunt Royale RPG, with over 15 million downloads.

Role
Game Developer / Team Lead / Architect
Platforms
Mobile (iOS / Android / Switch / HarmonyOS)
Collage of four Meta game experiences featuring colorful characters and environments
03

Meta / Gamedev / AI / XR

Meta Games

Partnered closely with Meta on the development of Meta Horizon Engine, a Unity-based platform, and built experiences showcasing its capabilities. Helped build Meta Horizon Studio, a new AI-powered engine, while developing tools and workflows for the future of game development.

Role
Team Pod Lead / Game Developer / Engine Developer
Platforms
Mobile / AR / VR / PC / Web
Winter Survival, Railbound and Hoomanz game artwork
04

Guest Performances / Consultancy / QA

Guest Performances

Guest contributions across several released titles, supporting teams through QA, development consultancy and focused feature work that added extra content and polish to each game.

Role
Game Developer / QA / Consultant
Platforms
Consoles / PC / Mobile
Roblox experiences including Hoomanz Airport, Bricks Wars, Waterpark Rumble and Delivery Rush
05

Multiplayer / Gamedev / Production Pipeline

Roblox Experiences

Designed and built an end-to-end production workflow that enabled the team to create new Roblox experiences for clients, then led the delivery of a series of releases enjoyed by players around the world.

Role
Architect / Lead Developer
Platforms
Roblox
Unreal game worlds with a Work in Progress bannerMore Info Soon
06

Unreal / Gamedev / Multiplayer / Consultancy

Unreal Games

Three original Unreal Engine projects: Rage Walker, an Indiana Jones-inspired rage game; Casual Tank, a multiplayer tank game inspired by Battle City; and Decay Strain: The Timekeeper, a steampunk horror title. Developed independently or in small teams, the projects deepened hands-on expertise across the Unreal platform.

Role
UE Developer / Consultant / Technical Support
Platforms
PC / Mobile

From first risk
to reliable system.

01Gameplay systems

Designing maintainable, production-ready systems that remain clear as mechanics and teams grow. Reducing iteration cost through focused editor tooling, automation and practical workflows.

02Technical architecture

Turning product constraints into scalable boundaries, interfaces and delivery plans.

03AI Adoption & Agentic Systems

Designing and validating reliable agentic workflows, diagnosing orchestration failures, and helping cross-disciplinary teams adopt AI through practical, production-ready integrations.

04Team & project leadership

Aligning engineering decisions, product priorities and multidisciplinary delivery.

05Cross Platform Development

Developing and shipping reliable interactive products across XR hardware, mobile, PC and console platforms.

06Prototyping & R&D

Validating the riskiest assumptions early, then evolving prototypes toward production. Hands-on use of Adobe Creative Cloud and Blender lets me contribute across the full creative production pipeline.

Experience

PeriodCompanyPositionScope
2026 -MiJaMedLead Developer / Product ArchitectCross-platform, healthcare, architecture
2023 -KoffecupPod Lead DeveloperMeta, architecture, cross-platform
2021 - 2022BoomBitSenior Unity DeveloperUnity, mobile, gameplay
2019 - 2021Cubeloop TeamTeam Leader / Lead DeveloperUnity, cross-platform, architecture
2020 - 2021A-Lan TechnologyIT Specialist / Junior DeveloperWeb apps, e-commerce, B2B
2018 - 2020Panopticon FilmsStream VisionVisual Creator / Film MakerFilm creation, postproduction
2017 - 2018VideoTesty.plDeputy Chief EditorManagement, video, B2B
For a detailed professional background, get in touch

Talks

DatePlaceSubject
2023Hackerspace Game JamHow to improve the prototyping process in Unity - Case Study
2022Digital DragonsHow to level up your prototypes in Unity
For speaking opportunities and knowledge sharing, get in touch

Education

PeriodInstitutionProgrammeFocus
2024 - 2026Jagiellonian UniversityMaster of Engineering - Computer Game ScienceGame Development, Programming, B2B
2017 - 2022DSW IDEISBachelor of Engineering - Computer Science and EconometricsGame Development, Programming, IT
For more details about my academic background, get in touch

Certificates

Type

MTA 98-361

Certificate

Software Development Fundamentals C#

Type

MTA 98-364

Certificate

Database Fundamentals

Type

MTA 98-375

Certificate

HTML5 Application Development Fundamentals

Type

MOS 77-725

Certificate

Microsoft Office Word: Core

Tools are
part of the
decision.

Core
Unity / C# / UE / AI / Architecture / XR
Platforms
Android / iOS / PC / Consoles / Meta / Roblox
Additional
C++ / TypeScript / Flutter / GitHub Actions / Adobe / Blender
Workflow
Git / Code Review / CI/CD / Agile / Technical Documentation

Engineer.
Architect.
Team lead.

I am a Lead Game Developer and Technical Team Leader focused on building reliable gameplay, AI and XR systems. My work combines hands-on development, technical architecture, product thinking and team leadership.

I am most effective in projects that require transforming an early concept into a working, scalable product, establishing strong technical foundations and helping multidisciplinary teams deliver complex interactive experiences. I also help teams adopt AI in practical, production-ready ways and optimize everyday workflows. A broad working knowledge of engineering, creative and content-production tools lets me contribute across disciplines and connect technical decisions with the wider product pipeline.

Kraków, PolandAvailable to work with your team

Let's build
something that
actually works.

For collaboration, lead and senior development roles, technical leadership, AI or XR-related projects, and speaking engagements, contact me directly.