Maxwell Hill

Builds full-stack web tools and custom hardware — from PCB design to deployed product. Production work in Next.js, Python ML pipelines, and embedded firmware. Active open-source contributor — ZMK Studio, GitHub's .gitignore templates, OrcaSlicer.

Experience

Callon Group — Full-Stack Developer

Sept 2025 – now

LLM-backed contract review pipeline that extracts and risk-scores clauses from PDFs (Python, Pydantic, Streamlit).
Next.js + SQLite tool indexing 1,000+ contract line items for bill-of-quantities pricing (TypeScript, better-sqlite3, Tailwind).
Migrated the WordPress site off legacy infra, cutting page loads from 9s to 300ms (Docker Compose, Caddy, Cloudflare CDN).
Implemented a DevOps pipeline for the WordPress site on cPanel: GH Actions → cPanel Git Version Control via UAPI (SSH deploy key, .cpanel.yml, scoped API token, CODEOWNERS-gated workflow, branch protection).
Rebuilt the site in Astro and deployed on Cloudflare Pages — global edge CDN dropped international TTFB from ~3s to ~50ms (wrangler.jsonc, Git-integrated auto-builds, PR preview URLs, one-click atomic rollbacks).

Aphex Properties — Freelance Web Developer

Aug 2025

PHP plugin parsing property XML feeds into an estate agency site (Docker Compose, Caddy, Cloudflare CDN).
Self-hosted Chatwoot live chat on Oracle Cloud VPS for lead capture.
Self-hosted Umami analytics on Oracle Cloud VPS for privacy-friendly traffic insight (no third-party cookies, GDPR-friendly).

Projects

ProTakeoff fork — PDF measurement for construction / QS

Jul 2026

Forked a single-user tool for measuring architectural PDFs (areas, linear runs, item counts — the kind a quantity surveyor does) and rebuilt it for real-time multi-user collaboration (Yjs CRDT, HTTP polling, zero merge conflicts).
Deployed on a Cloudflare stack: Pages + Functions (Hono) + D1 + R2 + CF Access; Yjs is source of truth, mirrored to Zustand.

Polymarket Analytics

Apr 2025

Full-stack analytics dashboard (Next.js + Python) for historical market data, smart-money tracking, and backtesting.
NautilusTrader integration for realistic execution modeling — slippage, latency, fill probability across six strategies.
Containerised with Docker Compose; Python backtest service proxied through Next.js API routes.

Custom Keyboards

Nov 2024 – now

Webcam hand scanner using MediaPipe; extracts fingertip/palm measurements to generate parametric keyboard layouts fitted to the user's hands.
Two nRF52840-based keyboard PCBs designed in KiCad; 3D-printed enclosures, PCBWAY-sourced, hand-soldered.
Contributed import/export to ZMK Studio (open-source keyboard config tool); merged PRs in active community use.

A-Level NEA — Multiplayer Game

2022

Multiplayer game built with Pygame and Python sockets — clients connect over the network for real-time play against each other.
MySQL backend for persistent user accounts and match state; server handles multiple concurrent client connections.

Open Source

Merged PRs to ZMK Studio (open-source keyboard config tool) — import/export support in active community use.
GitHub's official .gitignore templates — changes ship in thousands of new repos.
OrcaSlicer — restored commit history to maintain GPL/AGPL license compliance.
Contributed to my university's shared Docker images used across teaching labs.

Skills

Languages: Python, TypeScript, JavaScript, SQL, PHP
Frameworks: Next.js, React, Flask, Streamlit, Pydantic
CMS: WordPress, Astro
Embedded: KiCad, nRF52, ZMK firmware, PCB design
DevOps / Cloud: Docker, Caddy, Cloudflare Pages/Functions, D1, R2, wrangler, GitHub Actions, cPanel UAPI, Oracle Cloud, Azure

Education

University of Lincoln — BSc Computer Science (2:1)

2022 – 2025

Third-year project: built a CNN pipeline for multi-class hormone prediction from sleep EEG signals, achieving 88% accuracy on held-out test data. End-to-end deep learning workflow — PyTorch for modelling, MNE for EEG preprocessing, Docker for reproducibility.
Second-year project: tweet sentiment prediction model served through a Flask web app — users could submit tweets and get sentiment classifications back. Trained with TensorFlow and scikit-learn on labelled tweet data.
Certification: AZ-900 Microsoft Azure Fundamentals.

DevOpsDays London 2024

2024

Attended the annual DevOps conference in London — talks on platform engineering, observability, and CI/CD at scale.