Software Engineer|Systems

A cyberpunk physical-digital sword-sport metagame built around real-world play, NFC tags, maps, inventory, and player progression.

SiegeTag turns physical sword-sport gameplay into a digital metagame. Players can scan and collect physical tags, view captured tags in their inventory, and see tag activity on a map. The product connects a real sport played by hundreds of people with a software layer for progression, collection, mapping, and game systems.

• Built all core software for the product: monorepo, tooling, app, backend, internal packages, NFC systems, custom sheet tooling, and custom Mapbox integration.
• Ported the product from an older React Native version to a React + Capacitor architecture.
• Built the full-stack TypeScript system using Convex, React, Capacitor, Tailwind CSS, Biome, and Turborepo.
• Implemented physical tag scanning, inventory, map views, and product workflows for a beta/MVP used alongside a real physical sport.
• Designed private NFC security workflows for physical tag possession, including rolling-secret behavior for sensitive actions.

An automated asset intelligence platform where NFC tags turn physical assets into inspectable, maintainable digital systems.

VenturAI was built for HackUSU 2026 and won 2nd place in the Startup Category. The concept: attach an NFC tag to any physical asset, scan it to register or open the asset's operating system, then use AI inspections, maintenance logs, risk scoring, and company dashboards to manage real-world assets.

• Built roughly 90% of the hackathon prototype and contributed across all major parts.
• Helped teammates learn and use new technologies during the build.
• Implemented the core concept of NFC-based asset registration and asset access.
• Designed workflows for AI inspections from photos, risk values, maintenance records, and company-level dashboards.
• Connected physical assets to digital records through simple phone taps.

An AI-assisted Canvas pre-grading system that checks assignments against instructions, rubrics, submissions, and files before final submission.

Rubrical helps students understand how their work may be evaluated before they submit. It ingests rubric criteria, assignment instructions, submission text, files, and related content, then produces criterion-level feedback and predicted rubric behavior.

• Built a working monorepo with a browser extension, web app, and backend.
• Implemented TypeScript scraping logic in the browser extension to gather Canvas assignment context.
• Built the backend in Go using Chi.
• Rendered the UI with HTMX using Go templ.
• Designed the scoring/feedback model around rubric coverage, assignment requirements, selected rating bands, and predicted scores.
• Focused on understandable feedback rather than opaque AI grading.

A voice programming system that lets a developer control VS Code, edit files, run shell commands, and build software by talking.

Vocode is a multi-process voice coding system published as a VS Code extension. It was originally built to help someone with typing pain program using voice commands, but grew into a general voice-driven coding workflow with transcription, AI planning, file editing, command execution, and verification loops.

• Published a full VS Code extension.
• Built a three-process architecture: VS Code extension, Go voice sidecar, and Go core engine daemon.
• Used a Go sidecar with C PortAudio bindings to capture sound, stream audio to ElevenLabs, and return transcripts.
• Sent transcripts over JSON-RPC to the extension, which owned UI and safe execution of file edits.
• Built a core engine daemon that analyzed transcripts, planned actions, sent edits/commands back to the extension, and received success/failure feedback.
• Supported shell access, command execution, and verification loops.
• Used VS Code LSP concepts to understand and work with editor state.
• Demo result: created and ran an Expo app with a button printing Fibonacci numbers in under 1.5 minutes using voice.

A cross-platform Capacitor NFC plugin for reading and writing NDEF tags on Android and iOS.

SiegeTag NFC is an open-source plugin built to support the physical tag workflows behind SiegeTag. It provides the app-level NFC layer needed for scanning and writing physical tags across Android and iOS.

• Built an open-source Capacitor plugin for NFC support.
• Supports Android and iOS.
• Focused on NDEF read/write workflows used by the SiegeTag product.
• Separated reusable NFC infrastructure from private product-specific NFC workflows.
• Supports the broader physical-digital architecture of SiegeTag.

A React Native iOS/Android education app built and deployed in two months for career and financial planning.

My10YearPlan is a production mobile app connected to an existing CakePHP/PHP backend and PostgreSQL database. Spencer was given full responsibility for the project and built the app to work with existing website data, including messy legacy records and compatibility requirements.

• Built and deployed the iOS/Android React Native app in two months.
• Integrated the app with an existing CakePHP/PHP backend and PostgreSQL database.
• Built a custom pure-TypeScript package to support app functionality.
• Solved parity between a WYSIWYG editor, drawing canvas, mobile app behavior, and existing website workflows.
• Made the app compatible with large amounts of existing dirty production data.
• Owned the project end-to-end as the primary engineer.