Tobias W. - Senior Game Developer (Unity/C# & Web Full Stack)

Berlin, Germany

Experience

Sep 2025 - Present

4 months

Freelance Unreal Engine/C++ Developer

Nachtalb UG

Added features and fixed bugs in an Unreal Engine 5 card game using C++ and Unreal Engine 5

Aug 2025 - Present

5 months

TypeScript/WebGL Developer

kijufi

Turn game concepts and graphics from young workshop participants into actual web games using PlayCanvas and Phaser
Web development with JavaScript, TypeScript, WebGL, PlayCanvas, Phaser, React, MobX, HTML5, CSS

Mar 2025 - Jun 2025

4 months

Freelance Unity Developer

Playing History

Developed a screen reader compatible audio guide and a 2D game for museum context in Unity (C#, Unity, UGUI, UI programming, Mobile development, Android, Accessibility)
Worked with designers and artists to implement functional UI
Onboarded client’s programmer for future development

Sep 2024 - Nov 2024

3 months

Freelance Web Development Consultant

Resleeve

Consulted on technology selection for a specific web application
Provided ongoing support and answered development questions
Technologies: JavaScript, WebGL, PixiJS, HTML5

Jun 2024 - Mar 2025

10 months

Freelance Unity Developer

Gil Naamati

Developed prototype for a 2D bartending game with fluid mechanics using C#, Unity, Shaders

Sep 2023 - Oct 2024

1 year 2 months

Freelance Unity Developer

EXPOZE

Main programmer on Google Photorealistic 3D Tiles map app with rich-text WYSIWYG editor, cloud saving via Firebase Firestore
Integrated Cesium library for 3D Tiles
Designed database schema, security rules, Firebase integration
Developed rich-text editor with formatting, drag-and-drop, undo/redo
Added day/night slider, moving scene elements (aircraft, birds with flocking)
Implemented AssetBundle loading for client-specific content
Contributed marker recognition functionality and health sector project rework

Aug 2023 - Sep 2024

1 year 2 months

Freelance Unity Developer

DAS

Added multiplayer capabilities to VR application Apollo using Mirror Networking
Synced scenario selection, user positions, avatars, voice chat, annotation tools
Planned integration, implemented core functionality, trained team on concepts

Jul 2021 - Jul 2021

1 month

Freelance Arduino Engineer

Private Customer

Developed electronic puzzle using Arduino: display instructions and QR codes, jumper cable inputs
Created Arduino program and circuit diagram for client self-rebuild
Features: instruction display, QR code presentation, interactive jumper cable connections

May 2021 - Jun 2023

2 years 2 months

Lead Programmer / Freelance Full-stack TypeScript/WebGL Developer

cultures interactive

Led programming team of 4: planned tasks, reviewed code, selected technologies
Set up architecture for client/server, map editor, game, networked data pipelines, undo/redo, localization
Optimized game and editor performance, loading times, thumbnail generation
Implemented isometric depth sorting for entities
Developed multiple editors: map editor, node-based logic editor, asset and animation editors
Enabled real-time collaborative editing
Bugfixing across all components

Mar 2021 - May 2021

3 months

Freelance Unity Developer (VR) / Arduino Engineer

NowHere Media

Prototyped Berlin 2037 VR bike experience using C#, Unity, Oculus Rift
Integrated Arduino sensors for wheel speed and steering angle input
Collaborated with artists and SFX engineer for scene and sound integration

Jul 2020 - Apr 2021

10 months

Freelance Unity Developer (VR)

NowHere Media

Developed interactive VR documentary Kusunda using C#, Unity, Oculus Rift, HTC Vive
Set up tools for volumetric video and photogrammetry import
Built Unity Timeline-based sequence tools for animations, audio, transitions, effects
Created mesh fade, voice visualization, telephone call effects
Added recording functionality and in-game UI elements
Integrated 3D scenes, animations, sound effects with artists and SFX engineer

Jun 2020 - Oct 2020

5 months

Freelance Full-stack TypeScript/WebGL Developer

Wooga

Developed Railway Riddles 2D escape-room game and Node.js backend
Phase 1: built proof-of-concept prototype with account/login, JSON-configured rooms, responsive UI, backend answer validation
Phase 2: implemented sound, localization, contest modes, countdowns, info sections, responsive hosting website
Collaborated on backend game routes
Technologies: TypeScript, WebGL, PixiJS, React, Node.js, Express, MobX, MongoDB

Aug 2019 - Jun 2021

1 year 11 months

Freelance Unity Developer & Game Designer (AR)

basa e.V.

Sole programmer on location-based AR multiplayer Android game Canvas City
Server authority model with LiteNetLib for game state, client authority for responsiveness
Implemented AR+GPS location integration, NPC dialogue system, minigames, minimap
Developed web-based map, dialogue, and server configuration editors with TypeScript
Game design collaboration

Aug 2019 - Nov 2019

4 months

Freelance JavaScript/WebGL Developer

Wooga

Built match-3 playable ad for Tropicats using JavaScript, WebGL, PixiJS
Implemented gem matching, movement, vanish animations, mouse and touch input
Designed tutorial, five special gems with 14 combination effects
Added localization and various UI/animation effects

Jun 2019 - Aug 2019

3 months

Freelance Full-stack TypeScript Developer

meshicon

Developed client/license management web app and REST API backend
Features: admin/client login invitations, client/invitation/license management, error log display
Technologies: React, Styled Components, Node.js, Express, Sequelize, MobX, Docker, CapRover

Apr 2019 - Apr 2019

1 month

Freelance Unity Developer

Legendary Play

Researched Unity Addressables package beta and created demo project demonstrating use and stability

Jan 2019 - Apr 2019

4 months

Freelance Unity Developer

Waves Audio Ltd.

Developed multi-scene Unity demo project with UGUI
Implemented navigation triggers for audio playback or teleportation
Built levels and integrated Asset Store assets
Tested and integrated lip-sync solutions

Sep 2018 - Feb 2019

6 months

Freelance Unity Developer (VR)

Polyverse

Maintained and extended VR training prototype with C#, Unity, HTC Vive
Cleaned and bugfixed code and scenes, built interactive object snapping for structure assembly
Created test scenarios for player knowledge evaluation
Integrated Obi Rope asset for realistic rope physics
Built observer admin UI, sound design, teleportation shader-based transitions

Aug 2018 - Aug 2018

1 month

Freelance Unity Developer

Codeglue

Integrated blockchain items into Crown of Carnage using Nethereum and Alto Cross Games SDK
Created Unity editor extension for minting and fetching Alto items
Implemented wallet item reading and minting to players
Added bugfixes and new gameplay features

Aug 2018 - Aug 2018

1 month

Freelance Unity Developer

Private Customer

Co-developed Leap Motion typographic design Unity project

Mar 2018 - May 2018

3 months

Freelance JavaScript/WebGL Developer

Treasure Hunt GmbH

Main programmer on Facebook Messenger game GOAL! Shootout using Three.js, React, MobX
Implemented flick-style input, asynchronous multiplayer challenges, leaderboards
Integrated Facebook Messenger platform APIs

Feb 2018 - Feb 2018

1 month

Freelance JavaScript/WebGL Developer

Weihe GmbH

Built breakout-style Weihe Mini Game with PixiJS
Supported desktop and mobile input schemes, multiple balls, items
Developed PHP/SQLite highscore server and level editor
Enabled configurable gameplay and assets without code changes

Oct 2017 - Feb 2018

5 months

Freelance JavaScript/WebGL Developer

Goller & Vos

Developed Uneven Journeys web experience using PlayCanvas
Implemented roll-the-ball gameplay with gyroscope, keyboard, mouse controls
Created simulated chat UI and country info components

Sep 2017 - Oct 2017

2 months

Freelance Unity Developer (AR)

antoni

Prototyped Mercedes CAR AR configurator for iOS with Unity/ARKit
Implemented real-world car placement, translation, rotation, scaling gestures, digital joystick driving
Designed polished UI with transitions and optimized scene performance

Jun 2017 - Jun 2017

1 month

Freelance Unity Developer

Bothe Grienig UG

Enhanced Google Sheets Unity plugin: added features, fixed bugs
Exposed plugin methods to Playmaker state machines with offline CSV data
Implemented save/load state methods

May 2017 - Dec 2018

1 year 8 months

Freelance Unity Developer

wonderkind GmbH

Developed two educational Unity games for energy topic on desktop, Android, iOS:
Energie Wimmelapp: hidden pictures with info pop-ups and minigames
Energie Schnitzeljagd: teacher editor for QR-based scavenger hunts and custom tasks
Implemented UGUI, Spine animations, NatCam Pro, WebGL export, SQLite storage
Worked with artists and sound designers

Apr 2017 - Oct 2017

7 months

Freelance Unity Developer (AR)

eyecandylab

Developed initial prototype for Galileo AR app on iOS/Android using Unity
Encapsulated and integrated native AR plugin, NatCam Pro
Built example scenes with 3D artists and created custom shaders
Advised on Unity best practices

Dec 2016 - Nov 2017

1 year

Freelance Unity Developer (AR)

Cebra

Created AR demos in Unity with Vuforia: image/object recognition, text recognition, video playback, virtual buttons
Developed UGUI interfaces

Nov 2016 - Jan 2017

3 months

Freelance JavaScript and Unity Developer

R2

Developed H-EAR AR audio drama system: web-based node editor (JavaScript/HTML5) supporting branching geolocation stories and Android Unity player app
Implemented phone call, choice UI, cached online map, GPS triggers

May 2016 - Sep 2016

5 months

Freelance Unity Developer

Bearhands

Extended stealth game Grand Values: Monaco with coverage mapping, cover movement, dash mechanic, climbing system
Enhanced camera controller and core gameplay features

Oct 2015 - Sep 2017

2 years

Freelance Unity Developer (VR)

Illusion Walk KG

Programmed networked multiplayer room-scale VR system with C#, Unity, UNET
Integrated Leap Motion and real-world electronics (Arduino, Raspberry Pi)
Developed synchronized physical interaction elements and UI triggers
Created post-processing and material transition shaders
Evaluated and integrated VoIP systems (TeamSpeak, Photon Voice, Dissonance)
Built analytics and editor utilities

Jun 2015 - Aug 2015

3 months

Freelance Unity Developer & Game Designer

Critical Hit

Developed four wearable game installations combining Unity (C#), Processing (Java), electronics (Arduino)
Projects: Shoal (Kinect flocking fish), CloudKeeper (distance-sensing generative creatures), Fruit Fever (fork resistance puzzle), (un)done (capacitive knot input)

Feb 2015 - May 2015

4 months

Freelance Unity Developer

Codeglue

Built mesh destruction system for Antegods using C#, Unity: slicing, caching, animated reformation
Integrated prototype code into final product and implemented gameplay

Oct 2014 - Jan 2015

4 months

Freelance Unity Developer

it matters Games UG

Developed iOS building design game for children in Unity
Implemented dynamic floor, door/window placement, recoloring, decoration spraying
Cleaned prototype code and built NGUI interfaces

Oct 2014 - Oct 2014

1 month

Workshop Organizer

jfc Medienzentrum

Conceptualized and organized week-long game jam for children
Managed event planning and coordination

Feb 2014 - Apr 2016

2 years 3 months

Freelance Unity Developer

Joid games

Maintained and extended Balloony jump 'n' run Unity game for Android/iOS
Fixed bugs, added features, integrated NGUI UI

Oct 2013 - Feb 2014

5 months

Instructor

HTW Berlin

Planned and lectured Unity introductory course: weekly lectures, exercises, final project

Sep 2013 - Sep 2013

1 month

Freelance Unity Developer

gosub

Developed prototype game in Unity (C#)

May 2013 - May 2013

1 month

Freelance C# Programmer & Workshop Organizer

Mediale Pfade

Created StarCoder C# educational game and co-organized youth programming workshop

Jan 2012 - Jun 2012

6 months

AS3/Adobe AIR Developer

Exozet

Reimplemented Nintendo DS jump 'n' run for mobile using AS3, Adobe AIR, Starling, PureMVC
Implemented gameplay and converted DS level format

Apr 2011 - Jul 2011

4 months

Unity Developer Intern

Codeglue

Programmed Android Beer Pong game in Unity (C#), porting from iOS version

Jun 2007 - Mar 2011

3 years 10 months

Java Software Developer

DATAWERK GmbH & Co. KG

Developed PHP CakePHP auction website, MySQL, HTML/CSS
Built Typo3 plugins, managed Typo3 systems
Customized Magento in PHP
Created Java web apps with Spring, Hibernate, Tapestry, HTML/CSS, JavaScript/AJAX

Nov 2006 - Nov 2007

1 year 1 month

Ingame Game Master

Burda:ic GmbH

Provided live support, ticket support, rule enforcement for European Ragnarok Online server

Jun 2005 - Mar 2006

10 months

Software Developer

Cobion AG

Developed Firefox plug-in and debugged existing software

Summary

I’m Tobias Wehrum, a software developer from Berlin with 12 years of freelance experience and a lifelong passion for programming.

I build apps and games for desktop, mobile and the web using tools like the Unity engine, modern web tech like React, Node.js, Pixi.js and PlayCanvas, and programming languages like C#, JavaScript and TypeScript.

Need something not listed here or in my portfolio? I might be able to help you anyway. Let's talk!