Martijn Hagenaars
C++ Game Engine Programmer
Hi there! My name is Martijn Hagenaars, and I'm a passionate
C++ programmer with a strong interest in game programming
and game engine development.
I began programming in 2020 and have enjoyed it ever since.
I have always been interested in learning about new concepts
and tackling challenging tasks.
From 2021 to 2025, I studied programming within the Creative
Media and Game Technologies program at the Breda University
of Applied Sciences, focusing on game engine development and
collaborating on several large team projects. In 2025, I
graduated cum laude with a GPA of 3.93/4.0 and earned my
Bachelor of Science degree.
I want to continue working in the games industry and
contributing to amazing projects! Feel free to reach out!
LAGGED
Personal project where I'm working on creating a general-purpose engine
The Last of Us Part II Remastered for PC
The PC port for The Last of Us Part II
On the Bubble
A Monkey Ball-inspired game running on a custom game engine
Project Timeline
Below are some of the projects that I worked on over the last
couple of years.
The Last of Us Part II Remastered for PC
Organization:
Nixxes Software
Platform:
Windows
Tools:
C++, LISP
Team Role:
Systems Programmer Intern
Release date:
April 3, 2025
Duration:
1 year
The Last of Us Part II is a third-person
action-adventure game following Ellie and Abby
through a post-apocalyptic world, now available on
PC and playable with mouse and keyboard.
My contributions to the PC port included reworking
the Weapon HUD for improved mouse-and-keyboard
support (including two distinct selection systems
that account for all accessibility options),
reviewing and updating all control schemes to
enhance mouse-and-keyboard support, and fixing
numerous gameplay and engine bugs leading up to
and following the release. I also contributed to
the development of the new Chronological gamemode,
which was introduced in Patch 1.5 for PC. This
included work on gameplay logic as well as engine
functionality.
On the Bubble
Organization:
Breda University of Applied Sciences
Platform:
Windows, PS5
Tools:
C++, Custom Engine
Team Role:
Lead Engine Programmer
Release date:
September 22, 2024
Duration:
1 year
On the Bubble is a monkey-ball-inspired game
developed for Windows and PS5, built on a custom
game engine created during our third year at
Breda University of Applied Sciences. Key
features of the engine include a custom
raytracer, a custom physics engine and a custom
level editor.
My contributions included implementing the core
game object system, which serves as the
foundation for all in-game entities, and
developing level management systems that support
multithreaded loading, unloading, and level
transitions. I also created an easy-to-use
serialization and deserialization system, using
a single function to handle (unique) variable
serialization and file I/O across both
platforms.
LAGGED
Organization:
Personal Project
Platform:
Windows
Tools:
C++
Team Role:
Lead Programmer
Release date:
Ongoing
Duration:
Since August 2023
LAGGED (which stands for "Learning About
Graphics and Game Engine Development") is a
personal project where I work on creating a
general-use engine. LAGGED (which stands for
“Learning About Graphics and Game Engine
Development”) is a custom game engine project
where I try to learn new things about certain
topics in graphics and engine development.
My contributions included implementing the core
game object system, which serves as the
foundation for all in-game entities, and
developing level management systems that support
multithreaded loading, unloading, and level
transitions. I also created an easy-to-use
serialization and deserialization system, using
a single function to handle (unique) variable
serialization and file I/O across both
platforms.
Ruckus & Rascal
Organization:
Breda University of Applied Sciences
Platform:
Windows
Tools:
Unreal Engine 5.1
Team Role:
Lead Programmer
Release date:
June 23, 2023
Duration:
16 weeks
Grab a friend and start your journey in this
chaotic co-op adventure where you play as two
devious raccoons who love causing chaos. Use
each other's strengths to make your way through
the diner towards the head chef, and teach him a
lesson for screwing up your home. But be
careful, the diner's staff doesn't like you
messing with their property, so they will try to
catch you!
My contributions included creating the AI
enemies, as well as tools to customize their
behavior. I also implemented several interactive
objects.
EGO Engine
Organization:
Breda University of Applied Sciences
Platform:
Windows, Xbox One
Tools:
C++, Custom Engine
Team Role:
Engine and Tools Programmer
Release date:
January 20, 2023
Duration:
16 weeks
EGO Engine is a custom game engine, specifically
designed for metroidvania-style games. The
engine runs on both Windows and Xbox One.
For this project, I worked on implementing the
ECS (using the Entt library), creating the level
systems for loading and unloading level data
from JSON files, saving and loading of both
player and level data using Cereal (a
serialization library), as well as writing the
tools for creating and decorating the levels.
Astrohaunt
Organization:
Breda University of Applied Sciences
Platform:
Windows
Tools:
Unreal Engine 5.0
Team Role:
Enemy and AI Programmer
Release date:
July 1, 2022
Duration:
8 weeks
Get ready to blast off for a spookily
extraterrestrial experience! An overly ambitious
scientist’s experiment has gone horrifically
wrong, and his mansion has been transported into
space. It is your duty to rid the mansion of a
horde of restless ghosts. Take over the
different ghost’s powers to benefit you in your
traversal through the scientist's mansion: Boost
your health, increase your shot number, and gain
new powers by trapping the ghosts in a
fast-paced and immersive minigame! Clear as many
floors of the mansion of ghosts as possible and
de-haunt the cosmos! See you in space,
Astronaut!
My contributions include creating the three
ghost enemies, their attacks and their AI
behaviors.
Dungeon Crawler on a Raspberry Pi
Organization:
Breda University of Applied Sciences
Platform:
Linux
Tools:
C++, Custom Engine
Team Role:
Programmer
Release date:
April 14, 2022
Duration:
8 weeks
A 3D dungeon crawler game, inspired by the
classic arcade game “Gauntlet”, running on a
Raspberry Pi 4. This project uses 3D graphics
using OpenGL, support for diffuse and specular
textures, Phong-based lighting from multiple
sources and .obj model loading. It also uses the
Bullet library for physics, as well as ImGui for
the UI. For the gameplay, it contains a
procedural dungeon generator, two different
player classes and three unique enemies.
This was a solo project; I wrote all of the
engine and gameplay code myself
CPU Raytracer
Organization:
Breda University of Applied Sciences
Platform:
Windows
Tools:
C++
Team Role:
Enemy and AI Programmer
Release date:
January 28, 2022
Duration:
8 weeks
A CPU raytracer, where primitive objects, like
spheres and spheroids, can be rendered in real
time (around 30fps). This was a solo project;
all code was written by me.
Primitive objects can contain reflective and
refractive materials. In order to accomplish
real-time framerates, a custom BVH system was
implemented, as well as a multithreading system
for spreading rendering workload across multiple
threads.
Recreation of R-Type
Organization:
Breda University of Applied Sciences
Platform:
Programmer
Tools:
C++
Team Role:
Programmer
Release date:
November 5, 2021
Duration:
8 weeks
A recreation of the first level from the classic
arcade game “R-Type”. This project tries to
recreate the first level as closely as possible,
containing many of the same enemies, upgrades,
and level layouts. This was the first project at
BUAS and was used to introduce us to C++ game
development. Even though this was the first game
project that I worked on, I still managed to
implement various interesting mechanics, like
per-pixel collision, spline-based movement for
certain enemies and the FABRIK algorithm for the
boss fight at the end of the level.
Skills
Below are programming languages, libraries and tools that I use
regularly and that I am familiar with.
C++
My primary programming language
OpenGL
Graphics API
Unreal Engine
Blueprinting
Visual Studio
Integrated development environment
Scrum
Scrum
GitHub
Source control
Let's get in touch! 👍🏻
Do you have a question, want to work together or just want
to say hello? Contact me below!
