AI Engineer

Steven Koch

TTS Research · Voice AI · 3D Design · Creative Technology

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About Me

Where AI Meets Interactive Entertainment

I build things at the intersection of game development, AI engineering, and creative technology — from game engines to generative art pipelines to voice synthesis systems.

By day, I develop hardcore multiplayer survival games in Unreal Engine 5. By night, I architect AI-powered production pipelines that generate hundreds of consistent images, synthesize voice narration, and ship as zero-dependency web applications.

Game Development

  • "The Last Winter" — multiplayer survival shooter in UE5 with grid-based inventory, full replication, and equipment systems
  • 5 browser-based game engines — pure vanilla JS, single-file HTML distribution, zero frameworks

AI & Generative Systems

  • End-to-end AI image pipeline — ComfyUI + SDXL with IP-Adapter for character consistency across 200+ images per project
  • AI voice synthesis studio — Flask-based TTS tool with automatic audio post-processing and Voice Consistency Scoring
Studying: B.A. Game Design Goal: M.Sc. Applied AI
Skill Set

What I Work With

Game Engines

Unreal Engine 5
Unity
Custom HTML5

3D & Art

Blender
ZBrush
Substance Painter
Substance Designer
Marmoset Toolbag

Code

C++ / C#
Python
HTML / CSS / JS
Blueprint

AI / ML

PyTorch / CUDA
TTS / Voice AI
ComfyUI / Stable Diffusion
Prompt Engineering

Backend & DevOps

Flask / FastAPI
Node.js / Express
Nginx / Linux
Git / Docker
Portfolio

Artwork

3D renders and AI-generated artwork — exploring the intersection of technology and visual art.

View full portfolio on Artstation →

3D Assets

Shipping Container — Game-Ready 3D Asset
Shipping Container
Storage Shelf — Game-Ready 3D Asset
Storage Shelf

PBR Materials

PBR Grass Material
Grass
PBR Gravel Material
Gravel
PBR Dirt Material
Dirt
Professional Work

Projects

Applied AI and interactive systems — from university research to production.

Charlie — VR Chatbot

AI-powered VR assistant for university research. Natural language understanding, speech recognition, and real-time interaction. Currently migrating to Unreal Engine 5.

Unity / UE5 NLU Speech AI

STARS BEYOND — Sci-Fi Action RPG

Open world top-down ARPG set in a sci-fi universe. Five distinct classes, real-time combat, and optional co-op — built in Unreal Engine 5 with C++ and GAS.

Unreal Engine 5 C++ GAS Open World
Research Project

AudioGen Studio

A local TTS production tool with integrated voice quality scoring — built for consistency, not just generation.

Read the full deep dive →

Voice Consistency Score

5-metric evaluation framework measuring tightness, adherence, drift, prompt-robustness, and seed-stability across generated speech.

Voice Designer

Create and test custom voices with automated scoring. Save voices that pass quality thresholds, discard the rest.

A/B Listening Test

Blind comparison tests with spectrograms and cosine similarity — data-driven voice selection instead of guesswork.

Batch Processing

Game Mode with SSE progress streaming. Per-item voice selection for narrator, NPC, and combined output.

Voice Samples

Narrator — Rich Baritone
EN Male · VCS 98.3% · Production Ready
0:000:00
Arthur — Cowboy Drawl
EN Male · Deep rugged voice · Campfire storyteller
0:000:00
Laura — Warm Narrator
DE Female · Clear and conversational · Natural tone
0:000:00
Victor — Dark Commander
DE Male · Authoritative and dramatic · Character voice
0:000:00
Python / Flask VibeVoice TTS GPU Inference Resemble Enhance VCS Scoring
Get In Touch

Let's Talk

Open for opportunities in AI engineering, game development, and creative technology.