Simulation / Graphics / Tools / Immersive Systems

Arnold Lopez

Real-Time Simulation & Graphics Engineer

I build real-time applications with C++ and C#, spanning rendering, developer tools, and interactive training. My work focuses on performance, maintainable systems, and practical development workflows.

View Project Details View Source

LinkedIn GitHub

ForgeSim In development

Modern C++ engine and editor · OpenGL · Dear ImGui

C++
C#
Unity
OpenGL
CMake

Featured project

ForgeSim

Independent project · In active development

A modern C++ real-time engine and editor, being developed toward interactive mechanical simulation. Its current foundation combines glTF asset loading, physically based rendering, scene-editing tools, and fixed-timestep scheduling.

Explore the Source

ForgeSim material gallery demonstrating metallic and
dielectric surfaces with different roughness and textures. — Material gallery rendered in ForgeSim using physically based shading and image-based lighting.

Rendering

glTF 2.0 assets, metallic-roughness PBR, HDR rendering, and image-based lighting.

Editor Tooling

Scene hierarchy, object and light selection, transform gizmos, and undo/redo.

Runtime Foundations

Fixed-timestep scheduling with bounded catch-up and automated tests for core and editor behavior.

Selected experience

Engineering & Computer Simulations

Unity · C# · VR Training · Networking

Developed interactive Navy training applications, networked VR equipment interactions, and reusable systems shared across projects.

Prototyped a compute-shader rope simulation to explore improvements to runtime performance and rope behavior.

Leidos

C++ · OpenGL · GPU Compute · Authoring Tools

Developed a GPU particle simulation system and a standalone node-based editor for authoring visual effects.

Collaborated with artists and engineers on content workflows and investigated defects across real-time rendering systems.

Earlier projects

Terrasweeper

A 3D Minesweeper-style Android game with destructible terrain, timed runs, and Google Play achievements.

Play Demo GitHub

Dungeon Generator

Procedural room placement with interactive camera controls and a live interface for tuning generation parameters.

Try Demo GitHub

Contract & freelance

How I can help

Focused engineering support for interactive applications and development teams.

Simulation & XR

Unity-based interactive prototypes, equipment interactions, and VR training workflows.

Interaction and simulation systems
VR equipment workflows
Reusable application components

Rendering & Performance

Graphics debugging, shader development, and profiling to identify bottlenecks and guide improvements.

CPU and GPU profiling
Rendering diagnostics
Targeted performance improvements

Tools & Workflows

Editor tools and authoring utilities that help teams build, debug, and iterate more effectively.

Custom editor tools
Debugging and visualization interfaces
Workflow automation

Discuss a Project

About me

Arnold Lopez

I'm a software engineer focused on the systems behind interactive experiences. My professional background spans C++ graphics technology, developer tools, and Unity-based Navy training applications.

I'm currently developing ForgeSim to explore real-time engine architecture, rendering, and editor tooling. I enjoy solving technical problems and building practical tools that make complex systems easier to work with.

Computer Game Development · DePaul University

View Résumé

Let's work together

Have a real-time engineering challenge?

I'm open to discussing engineering roles and focused contract projects in simulation, graphics, and developer tools.

Email Me LinkedIn GitHub