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WYATT AU

Full Stack Engineer

Building deterministic infrastructure and high-performance systems. Currently bootstrapping QuestHive.

United Kingdom // wyatt_au@protonmail.com

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001 — ABOUT

Systems thinker, infrastructure builder.

UK-based backend and DevOps engineer with 6 years of experience building reproducible infrastructure, CI/CD pipelines, and high-performance systems. I architect solutions that stay standing after the next "must-have feature" ships to production.

My work spans distributed systems, real-time data pipelines, developer experience tooling, and security-focused sandboxing. I believe in deterministic builds, modular architecture, and infrastructure that can be reasoned about.

Currently focused on WebAssembly-powered developer tools and infrastructure automation through QuestHive. When not shipping code, I'm probably debugging a CI pipeline or contributing to open-source projects that solve real problems.

002 — FEATURED PROJECTS

plychart

Featured

High-performance WASM charting library for Rust. Renders candles, heatmaps, gauges, vol surfaces and correlation matrices to canvas, with a framework-agnostic zoom/pan interaction state machine and a JSON API consumed by SolidJS islands.

Rust · WASM · TypeScript · SolidJS

ferro

Featured

High-performance, self-hosted file storage platform in Rust. WebDAV, OIDC, WASM, S3-compatible API and full-text search in a single binary you run yourself.

Rust · WASM · WebDAV · S3

crawlkit

Featured

Site crawl kit in Rust. Crawls, analyzes and stores SEO and content signals for whole sites, with a WASM build that powers the live SEO audit dashboard on this site.

Rust · WASM · SEO

model-router

Featured

Cost-aware LLM routing core. Per-model pricing tables, USD budget tracking and task-class routing with fallback chains, so agentic workloads pick the cheapest model that can do the job.

Rust · LLM

Aileron

Featured

A blazingly fast, keyboard-driven web environment built in Rust with the Servo rendering engine. Features native window tiling, Lua-configurable keybindings, zero-extension ad-blocking via request filtering, and an integrated AI MCP server that allows LLMs to observe and interact with web content. Designed to be a performant alternative to Electron-based browsers.

Rust · Servo · Lua

Clawdius

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Remote agentic coding environment with WASM-based sandbox isolation. Uses Linux bubblewrap for read-only system access with full filesystem isolation, enabling safe execution of untrusted code while maintaining performance advantages over traditional containerized approaches.

Rust · WASM · Bubblewrap

003 — WASM SHOWCASE

Interactive Demonstrations

Real-time, client-side computations powered by WebAssembly. No server round-trips.

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Quasi-explicit SVI calibration from live Deribit option chains. Computed in WASM.

BTC VOLATILITY SURFACE (SVI)

Fitting SVI slices...

Three strategies. Fitted per window. Net of slippage and commission. No look-ahead.

PORTFOLIO BACKTEST

Backtesting portfolio...

Partial sums S_N(t) converge to the target waveform while the magnitude spectrum |c_n| traces a continuous analytic envelope. Drag the harmonic count and watch Gibbs overshoot persist at discontinuities.

5

S_N(t) = sum_n a_n * sin(n * w * t + phi_n)

Sine: a_1 = 1, all other a_n = 0.

Truncating the series at N leaves an RMS (L2) error that shrinks as N grows; smooth targets (sine, triangle) converge fastest. Near a jump discontinuity the partial sums overshoot by about 8.9% no matter how large N gets. This is the Gibbs phenomenon: the overshoot narrows but never disappears.

004 — EXPERTISE

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Systems Programming

Rust, C++, C, Lean 4, WASM

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Web Assembly

Leptos, wasm-pack, WASM sandboxing

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Infrastructure

Docker, Kubernetes, Cloudflare, Terraform, Nix Flakes

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Data Engineering

PostgreSQL, TimescaleDB, Redis, Prometheus + Grafana

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Security

Bubblewrap isolation, CSP headers, Keycloak IAM

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UI/UX

SolidJS, Flutter, Brutalist design, Theme systems

005 — EMPLOYMENT

Founder & Backend Engineer

Jun 2025 — Present

QuestHive

Bootstrapping an early-stage SaaS platform focused on infrastructure automation. Responsible for system architecture, interfacing services, and deployment pipelines.

System architecture CI/CD pipelines Cloudflare Workers deployment

Freelance Developer

2022 — 2025

Self-Employed

Delivered full-stack solutions for clients including web applications, mobile apps, and infrastructure automation.

Full-stack web apps Mobile applications Infrastructure automation

006 — CONTACT

Get in touch.

Open to collaborations on high-performance systems, infrastructure tooling, and developer experience projects.

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