Hello, I'm Fielding Johnston. With over 15 years of experience, I build scalable AI infrastructure, decentralized systems, and interactive applications. My core mission is to help democratize AI.
This portfolio is a curated look at my work, ordered by what I'm most passionate about. You'll find my personal Projects first—these are the experiments and ideas that drive me. Following that are my academic Publications and my detailed Professional Experience.
See my work on GitHub, find my research on Google Scholar, or connect on LinkedIn. Feel free to reach out via email at hello@justfielding.com.
A steampunk pirate-themed multiplayer Yahtzee game built as a Telegram Mini App and available as a web app. Along with scratching a personal itch, I wanted to explore the potential of multiplayer games as Telegram Mini Apps and the outreach they can provide. Also, steampunk pirates!
Fite.bet reinvents online giveaways by transforming them from a simple random name(s) picker into an epic 8-bit fighting game tournament between the participants' AI-generated sprite representations. I took this opportunity to explore various diffusion model pipelines for dynamic asset generation in games and apps. It's a service that prioritizes both being awesome and offering utility.
An experimental UI control system that allows users to interact with web applications using real-life hand gestures via their webcam. This proof-of-concept leverages a lightweight, browser-based neural network for real-time gesture detection to control a rock-paper-scissors game without any physical input.
A satirical game concept exploring gesture-based controls. "Zuck Hunt" is a light-gun style shooter (a la Duck Hunt) controlled by hand gestures, while "Zuck's Revenge" flips the script into a side-scrolling beat-'em-up. Both are explorations in creative art direction and novel user interaction.
A lunar colony simulation game with dynamic AI-driven NPCs. This project showcases my versatility. Acting as the lead engineer and also directing the overall design and direction of the project, I had the opportunity to touch literally every aspect of the game, from shaders to the art, style and lore of the game.
A free, hands-on online course teaching computer architecture fundamentals through Minecraft’s Redstone system. Build registers, logic gates, and an ALU in-game, making concepts like binary and bitwise operations tangible. Created for my daughter, CS students, and anyone seeking a practical grasp of low-level computing.
Yipeng Du, Zihao Wang, Ahmad Farhan, Fielding Johnston, et al. (2025). COLM 2025 Conference Submission.
J. Buban, H. Zhang, C. Angione, Fielding Johnston, et al. (2025). arXiv preprint.
Claudio Angione, Yue Zhao, Harry Yang, Fielding Johnston, et al. (2024). Submitted to MLforSys2024.
Hongyang Zhang, Yue Zhao, Chao Yang, Fielding Johnston, et al. (2024). NeurIPS 2024 Workshop RBFM.
Architected a distributed inference framework for 120,000 models, handling up to 2M requests per day on heterogeneous hardware.
Designed and implemented Nesa’s layer 1 blockchain for decentralized AI compute.
Built telemetry pipeline using NATS.io and Prometheus to monitor nodes.
Led secure containerization for user-submitted models.
Contributed to equivariant encryption (EE) achieving zero-latency private inference.
Developed reinforcement learning system for dynamic model assignment.
Contributed to open-source: xFusers and nats.py stability improvements.
Led Unity-based lunar colony simulation game development.
Designed and implemented 3D environments and shaders.
Built AI systems for dynamic NPCs with procedural behaviors.
Directed art team and coordinated UI/UX integration.
Refactored to Svelte, improving performance for 14M+ monthly users.
Built components for scalable real-time video and data applications.
Developed custodial wallet system for user transactions.
Implemented NLP for ad placement to boost engagement.
Built scalable APIs and web apps for real-time video.
Led adoption of modern JS frameworks.
Engineered fine-grained reactive vanilla JS framework.
Built and scaled web apps integrating React and Three.js.
Advocated open-source frameworks to reduce tech debt.
Managed technical, design, and business operations.