Thomas Davis

Full Stack Developer & AI Engineer

Contact

  • Phone
  • +61 411 021 021

Location

  • Country
  • Australia
  • City
  • Cairns
  • Region
  • Queensland

Languages

  • English
  • Native speaker

About Me

Full stack developer with 15+ years building products at startups and in open source — founder of JSON Resume, co-founder of cdnjs. These days I build agentic systems end to end: tool-calling copilots with LLM-as-judge gates, autonomous document pipelines on the Claude Agent SDK, a bitemporal knowledge substrate in Rust with Lean-verified invariants, and neural TTS/ASR for Aboriginal language revitalization. Also trained a GPT from scratch in TypeScript and Vulkan just to see how deep the rabbit hole goes. I ship fast and let user feedback steer.

Work Experience

2021-05-05 to Present

Principal-level contract engineering, most recently owning the AI capability of an HR-tech SaaS end to end: the agentic layer of the product — an in-app copilot with tool-calling over live customer data, autonomous document-generation pipelines, and the server-side compute services underneath — while shipping across the full stack (PHP/GraphQL, React, Go gateway, edge services).

Built an in-app AI copilot: multi-provider tool-calling agent (Anthropic + OpenAI via Vercel AI SDK) with data-query and mutation tools, an LLM-as-judge quality gate scoring every response on 8 dimensions, and SSE keep-alive for long agent streams

Designed an autonomous report pipeline — one model plans the document, Claude Agent SDK runs write it against live data, a second agent pass compiles branded slide decks via a 90+ layout PPTX compiler with chart rasterization and LaTeX PDF output, agents running in a parallel containerized fleet

Moved heavy analytics server-side (Bun + Hono behind a Go gateway): pure-function ports oracle-verified for numeric parity with the client engine, event-keyed Redis caching, validated at 20k+ entity scale

AI data enrichment: ingested a ~32-table public occupational dataset, LLM-classified it into customer data structures, and built persona-driven simulation commands generating realistic test data at scale

Shipped a standalone real-time collaborative app on Cloudflare Workers + Durable Objects — WebSocket presence, optimistic updates with server reconciliation, embedded AI assistant with client-side tool execution

Hunted down multi-user concurrent-edit data loss with a purpose-built integrity harness: truly-parallel mutation racing, event-chain fork detection, contract tests driving real client reducers against the live API

2020-05-05 to 2021-05-05

Tokenized is a Bitcoin wallet for issuing, managing and trading digital tokens. I built the frontend, shipped as an Electron app. The hard part: keys never leave the user's machine, so all transaction and contract signing happens locally — which meant getting key management and security right in the UI layer.

React

Redux

SCSS

Product

2018-03-01 to 2020-01-01

Blockbid is an Australian crypto currency exchange. I started off on the frontend but eventually became tech lead and worked on every moving piece of the exchange. I really enjoyed working with liquidity providers and connecting their platforms to help us achieve liquid markets.

React, Apollo, Styled Components

Node.js / Rails

Docker / Heroku / GCP

Used Figma for design and UX work

Optimizing markets with tens of millions of rows using SQL.

2016-01-01 to 2018-01-01

Built a large React/Redux application that runs everywhere — web, iOS and Android — as a PWA wrapped in a thin React Native shell. One codebase, every platform.

Worked with Postgres, Redis and Dynamodb for storage.

Hosted on a mixture of Heroku Apps and EC2 servers.

Caching by Fastly and Cloudflare

Hybrid app supported on all platforms

2014-04-01 to 2016-01-01

Hired to take EFF's campaigning to the next level by building an action centre in Ruby on Rails. The action centre is built around some large open source tools that lower the barrier to entry when contacting congress.

Developed new tools for contacting congress

Brainstormed campaign ideas to raise maximum awareness about issues

Lots of social networking integration

2013-03-08 to 2015-01-09

Started off as a front end developer but took on the role of CTO in early 2013. The application frontend is built with Javascript and organized as a single page application that talks to a collection of Rails web servers which are connected to MongoDB.

Managed a small team of developers and designers

Built the entire frontend application with Backbone.js

Transferred all of the infrastructure from Heroku to AWS

2013-06-01 to 2016-01-01

Worked on many politically charged campaigns against mass surveillance. Not only technically challenging work but also a lot of networking and getting my hands dirty with politics. Our biggest campaign was "The Day We Fight Back."

Generated 37,000,000 banner views

100,000 phone calls to congress

500,000 emails

250,000 signatures

2011-01-01 to 2014-01-01

I write tutorials and blog post regarding the popular Javascript framework Backbone.js. The tutorials cover a range of topics regarding front end development aimed at beginners, experts and anyone in between.

Over two million unique visitors a year

25,000+ ebook downloads

300,000+ Youtube views

2011-01-01 to 2012-06-01

Ephox is a worldwide company who is heavily involved with the development of TinyMce and enterprise editors. My primary role included building front-end widgets and applications. Worked on a major product using Backbone.js as a base. Heavily involved in UI/UX design and wire-framing. Also spend a lot of time designing API specifications and documentation.

Education

2008-02-12 to 2009-12-12

The University of Queensland

Bachelors: Software Engineering (incomplete)

Awards

Defender of the Internet

2014-10-02

Fight For The Future

For my work against mass surveillance and building out civic tools for digital democracy.

Volunteer work

Creator & Maintainer at MobTranslate

Open-source language revitalization platform for Aboriginal Australian languages — dictionaries for dozens of languages, community voice recording, and a full speech/ML stack built with the community, not just for it.

Neural TTS pipeline: MMS-TTS (VITS) driven through a grammar-grounded orthography bridge that maps Kuku Yalanji spelling onto a same-family Pama-Nyungan donor voice (per Patz's reference grammar), per-word phonemic IPA for 2,679 dictionary words, deterministic seeded synthesis with full provenance, and a per-language model registry

ASR for low-resource speech: wav2vec2/Omnilingual CTC fine-tuning pipeline with reproducible dataset builds, serverless training runs, and benchmark harnesses

LLM translation fine-tunes with research-grade evaluation: lexical censuses, prompt ablations, dose curves, failure taxonomies, and curriculum replay datasets across Kuku Yalanji and Mi'gmaq

Native Android keyboard (IME), community recording infrastructure where real speaker audio always outranks synthesis, and sentence-corpus pipelines that turn recordings into training manifests

CARE-aligned governance: synthetic voices are explicitly flagged as scaffolds, donor voices are borrowed until a community licenses its own, and per-speaker (elder) models require explicit, revocable consent

Skills

AI & LLMs (Advanced): Vercel AI SDK, OpenAI API, Anthropic API, Google Gemini, Structured Outputs, Tool Calling, Embeddings / Vector Search, RAG Pipelines, LLM Reranking & Evals, AI Agents, Model Context Protocol (MCP), Claude Code Skills, Prompt Engineering, LLM Training (from scratch), Autograd / Tensor Operations, TTS/ASR Fine-tuning (VITS, wav2vec2), LLM-as-Judge Pipelines

Frontend (Advanced): React, Next.js, TypeScript, JavaScript, HTML / JSX, Tailwind CSS, Styled Components, Redux, Apollo / GraphQL, Electron, Three.js, Backbone.js

Backend (Advanced): Node.js, Go, Rust, Python, Ruby on Rails, PostgreSQL, MongoDB, Redis, Supabase, REST APIs, WebSockets, Deno

Cloud & DevOps (Advanced): Google Cloud Platform (GCP), Kubernetes, AWS, Docker, Vercel, Railway, Heroku, GitHub Actions, CI/CD Pipelines, Serverless, Cloudflare

Architecture & Tooling (Advanced): Monorepos (Turborepo), System Design, API Design, Microservices, Real-time Systems (Pusher / Yjs), CLI Tools, npm Package Publishing, Open Source Maintenance, Formal Verification (Lean 4)

Low-Level & GPU (Intermediate): C, Vulkan, SPIR-V Shader Generation, GPU Compute, Mixed Precision (FP16)

Interests

Gardening: Lazy Gardening

Music: Guitar, Singing, Dancing

Books: Reading, Writing, History

Open Source: All of it