[RT_0]

Charles Grassi

// CY

AVAILABLE FOR CONTRACT WORK // GRAPHICS · WEBGPU · AI SYSTEMS · REMOTE

GRAPHICS PROGRAMMER_

HLSL GLSL Unity Unreal WebGPU Python

~/charles/gpu_profile

Founder of Zylaris Ltd — the studio AAA teams call when performance is non-negotiable. 7+ years pushing pixels for Ubisoft, Nexus Studios, 22cans, and 12+ studios worldwide. From 90 FPS VR on Quest to 16K immersive installations — I build rendering systems that ship. 100+ shaders delivered. 70% average performance gains. 15× faster light baking. Games, VR, WebGPU, projection mapping — if it runs on a GPU, I optimize it. I also build AI agents and Python backends that run real businesses. Latest: CTO at Events Arena and HYPERDRYFT, a WebGPU live-visuals engine.

PERF_COUNTERS LIVE

100 +

SHADERS_SHIPPED

70 %

AVG_PERF_GAIN

12 +

STUDIOS

7 +

YEARS_XP

SHADER_PROPERTIES

_Shaders

5/5

_VFX

4.5/5

_Optimization

4.5/5

_TechArt

4/5

RENDER_TARGETS 12

RT_0 Ubisoft AAA Games RT_1 Nexus Studios VFX / Animation RT_2 The Sandbox Web3 / Metaverse RT_3 22cans Game Studio RT_4 Nexile AB Game Studio RT_5 DREST Fashion Tech RT_6 H3 Space Space Tech RT_7 Little Red Dog Indie Games RT_8 Scapin' Mobile RT_9 SABDA Interactive RT_A GN3RA AI / Creative RT_B Lunchbox Ent. Entertainment

Compiling shaders...

Oceanic Planet

Noise Scale 1.8

Terrain Height 0.6

Land Roughness 0.65

Normal Strength 0.15

Ocean Roughness 0.55

Sea Level 0.0

SSS Intensity 1.0

Atmosphere

Brightness 0.6

Radius 2.5

Density 37.1

Scatter Color

Scatter Scale 0.50

Sunset 1.0

Lava Planet

Noise Scale 1.8

Terrain Height 0.6

Rock Roughness 0.75

Normal Strength 0.20

Lava Glow 3.0

Lava Level 0.0

Atmosphere

Brightness 0.8

Radius 2.0

Density 25.0

Scatter Color

Scatter Scale 0.80

Sunset 0.5

Sun / Corona

Core & Glow

Core Size 0.50

Glow Size 1.00

Glow Intensity 0.60

Corona

Corona Intensity 1.00

Chromatic Shift 1.00

Rays

Ray Count 12

Ray Intensity 1.00

Ray Length 2.00

Streamers

Streamer Count 6

Streamer Intensity 1.00

Streamer Length 1.50

Halo Rings

Ring 1 Distance 1.20

Ring 1 Intensity 0.15

Ring 2 Distance 1.80

Ring 2 Intensity 0.08

Animation

Flicker Speed 3.00

Pulse Speed 2.00

Space Particles

Focus Distance

Focus Distance 0.20

Focus Range 0.15

Blur Distance

Near Blur Start 0.10

Far Blur Start 0.40

Bokeh Effect

Max Blur Size 25.0

Aperture (f-stop) 1.00

Bokeh Ring Width 0.50

Ring Intensity 0.80

Circle Quality

Edge Softness 0.30

Appearance

Particle Size 2.00

Brightness 1.00

Light Falloff 3.00

Base Color

Shooting Stars

Chance 0.100

Speed 0.40

Duration 0.80

Gold Color

Teal Color

Debug Quads

Enable

Star Temperature

Unity 15000K

M O

Intensity 1.0

Falloff 0.23

Unreal 2000K

M O

Intensity 1.0

Falloff 0.39

Graphics 5000K

M O

Intensity 1.0

Falloff 0.45

Ambient Light 0.00

Fog Intensity 0.15

M K G F A B O Star Classification

Orbital System

Orbit Speed 1.00

Sun Spread 1.00

Sun Dist Min 0.20

Sun Dist Max 0.45

Moon Orbit Size 1.00

Orbit Spacing 1.00

Moon Orbit Tilt 1.00

Orbit Dist Min 0.04

Orbit Dist Max 0.08

Spawn Offset 0.00

Sub-Moon Orbit 1.00

Sub-Moon Speed 1.00

Sub-Moon Size 0.50

Orbit Line Alpha 0.25

Orbit Line Width 1.00

Camera Sensitivity 1.00

Show Orbits ON

Navigation

Core Skills

Secondary

Tools

Drag nodes to explore

Core Expertise

UUnity

C#C#

SHHLSL/GLSL

UEUnreal Engine

Graphics APIs

DXDirectX 11/12

GLOpenGL

VKVulkan

WGWebGL

MTMetal

Unity Pipelines

URURP

HDHDRP

VFVFX Graph

SGShader Graph

Specializations

VRAR/VR

CSCompute Shaders

NINiagara

GIGlobal Illumination

PPPost-Processing

PBPBR Materials

Languages

C+C++

PYPython

JSJavaScript

TSTypeScript

Debug & Profiling Tools

RDRenderDoc

NSNSight

PXPIX

FDFrame Debugger

OUTPUT_BUFFER 1920x1080 RGBA16F

Blumhouse Enhanced Cinema

VR ArtStation

←→ Navigate Enter Open Space Play/Pause

2025–NOW ACTIVE

Chief Technology Officer

Events Arena

Architected and built the operating platform of a sports and events travel company: booking intake from partner channels, stock and contiguous-seat allocation, pricing engine, ticket logistics and competitor price monitoring. Claude-powered assistant with 65 tools, AI mailroom, and an autonomous build loop running in production.

1,000+ commits In 8 months

80K lines Python

65 AI tools Agent

FastAPI PostgreSQL Claude API AI Agents

2026 CO-FOUNDER

Co-founder & Graphics Lead

HYPERDRYFT

Node-based live-visuals engine: graphs compile to multipass WGSL and run on WebGPU, driven by real-time audio analysis (FFT, in-house beat tracking). AI copilot that builds graphs and writes WGSL kernels from a prompt. Desktop (Rust, wgpu, Tauri) and web.

300+ nodes Built-in

2,400+ commits In 8 months

19 AI tools Copilot

WebGPU WGSL Rust / wgpu Audio-reactive

2025 SHIPPED

Technical Artist & Graphics Programmer

Nexus Studios

Built real-time global illumination using SDF representations for VR environments. Implemented GPU compute pipelines for light baking optimization.

90 FPS Quest 2

15× faster Bake Time

20+ lights Dynamic

Compute Shaders SDF VR Global Illumination

2023–2024 LEADERSHIP

Chief Technology Officer

SABDA

Led technical direction for 16K immersive installation with 360° projection. Architected projection mapping pipelines and managed 64-channel spatial audio.

16K resolution 15360×1080px

8 engineers Team Size

2.5 GB/s Throughput

Projection Mapping Spatial Audio Real-time 3D Team Leadership

2023 LEAD

Lead Graphics Programmer

Little Red Dog Games

Directed team of graphics engineers developing high-performance VFX with compute shaders and Burst-compiled code.

70% faster CPU Time

15+ shaders Shipped

4 engineers Directed

Compute Shaders Burst VFX Team Lead

2023 SENIOR

Senior Graphics Programmer

22cans

Created shader library targeting mobile and desktop. Developed grass rendering system with volumetric lighting across hardware tiers.

1M+ blades Grass

25+ materials Library

<5ms GPU Volumetrics

HLSL Mobile Volumetrics Grass

2023 EXPERT

Shader Expert

GN3RA

Developed HDRP cloth shader system with 12+ fabric types. Optimized VFX with physically-based subsurface scattering.

12+ fabrics Types

35% reduction GPU Time

4K 60 FPS Target

HDRP Cloth Simulation VFX

2022 EXPERT

Shader Expert

DREST

Delivered specialized shader solutions for fashion tech including realistic fabric rendering and PBR workflows.

8 shaders Delivered

40% reduction GPU Time

Fashion Tech Materials Optimization

2021–2022 GRAPHICS

Graphics Programmer

Scapin' · The Sandbox

Engineered custom lighting system for web3 social applications. Built stylized cloud shader with 8-layer parallax.

30+ lights Dynamic

2M+ users Reach

55% faster Frame Rate

Lighting Mobile Optimization Web3

2021–2022 DEVELOPER

Unity Developer & Technical Artist

Lunchbox Entertainment

Created custom shaders including terrain, clouds, water with caustics, and bubble VFX for game environments.

18+ shaders Custom

60 FPS Switch

Water Shaders VFX Environment Art

2021 ENGINEER

Graphics Engineer

H3 Space

Developed graphics solutions for AR/VR across Quest 2 and HoloLens 2. Optimized particle systems and post-processing.

90 FPS VR Target

50K+ particles Real-time

<2ms latency Post-FX

AR/VR Optimization 3D Math

2020–2021 ORIGIN

Unity Developer & Graphics Programmer

Ubisoft

Delivered graphics programming for AAA game development. Shipped custom shaders across PC, PS5, and Xbox Series X.

20+ shaders Shipped

50% reduction GPU Time

100K+ particles Console

AAA VFX Performance

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