Creative Technologist/Cape Cod ⇄ Brazil/Available for work

I composesystems.

Most engineers come from one world. I come from three — code, music, and the kitchen. A full-stack & blockchain developer and product manager who learns fast, ships under pressure, and builds software people actually want to use.

The method

Take it apart.
Understand it.
Build it back better.

I've been taking things apart and putting them back together since I was a kid — curiosity is the engine. Twenty-five years in professional kitchens taught me to run a system under pressure: mise en place, then execute, then refine. It turns out software works exactly the same way.

So I taught myself to build. First tools to fix the problems I lived in the kitchen, then web apps for founders, then decentralized apps at hackathons from Harvard to Solana. Today I lead product and mentor English students in Brazil — building the tools my own classroom runs on. Still driven by the same thing: a love of learning and a need to make things people actually want to use.

Charles DeSouza — headshot
Charles DeSouza — South Yarmouth, Cape Cod ↔ Brazil
Selected work

The proof is in the projects.

My favorite builds sit where my worlds overlap — a school ecosystem built by its own teacher, kitchen software written by the chef who needed it, a music marketplace on-chain.

teaching × code

Mister Wiz Ecosystem

EdTech platform for an English school

As mentor and developer at Mister Wiz, I built the school's digital ecosystem: a report compiler that turns teacher CSVs into print-ready student report cards with skill radar charts, a teacher dashboard on Railway, and a gamified English quiz app — live and in use.

PythonFlaskPostgreSQLJinja2RailwayJavaScript
music × code

soundChain

Decentralized music marketplace

A marketplace for musicians to sell work and issue membership NFTs, with royalties enforced on-chain. Built where my two lives meet — music production and blockchain engineering.

AlgorandPyTealTypeScriptReactIPFS
kitchen × code

ChefTrack + ChefCalc

Kitchen operations suite

Software I built as an Executive Chef to fix problems I lived every day: inventory that drifts, menu costs that guess. ChefTrack tracks stock; ChefCalc prices every plate to the gram. Cut waste and errors across a working kitchen.

JavaScriptReactTailwindFlask
engineering

theVault

Document ownership DApp

Upload a document, store it on decentralized storage, and prove ownership on-chain — no trusted middleman. NFT-based validation across Algorand and Stacks.

AlgorandStacksIPFSReact
engineering

Tem Vaga

Scheduling app

A booking and availability app with a clean, fast interface — shipped and live on Vercel.

TypeScriptReactVercel
engineering

CNPJ Lookup

Full-stack business lookup

Real-time Brazilian company lookup with a Dockerized architecture and automated tests for performance and accessibility — the whole stack, end to end.

Vue 3LaravelTailwindDockerPlaywright
music × code

Royalty Manager

Smart contract

A smart contract that splits royalties across contributors automatically — the payout logic a fair collaboration needs.

AlgorandSmart Contracts
A packed room of builders at the EasyA × Algorand hackathon, Charles among them
EasyA × Algorand Hackathonin the room, building
HackathonsHarvard 2024Polkadot 2025StacksSolanaMore on GitHub ↗
Trajectory

Chef to product, by way of code.

A non-linear path, on purpose. Each stop taught the next one something.

English Mentor & EdTech Developer · Mister Wiz English School

2026 — Present

Brazil

  • Mentor English learners while building the pedagogic tools the school runs on.
  • Created a digital ecosystem: teacher dashboard, student report compiler, gamified quiz app, and landing page.
  • Automated reporting — teacher-filled CSVs become print-ready student report cards with per-skill radar charts.

Software Product Manager · metaCAMPUS

Dec 2025 — Present

Remote

  • Operate across product, UX, and engineering to define scope, requirements, and delivery priorities.
  • Translate stakeholder needs into user flows, technical tasks, and release plans.
  • Contribute to architecture, security, and documentation decisions for scalable systems — including a blockchain transcript-verification platform on Algorand.

AI Trainer / UX Evaluator · Alignerr

Sep — Dec 2025

Freelance

  • Trained and evaluated large language models for accuracy, safety, and alignment.
  • Designed datasets focused on reasoning quality, cybersecurity, and UX clarity.
  • Ran UX analysis of conversational interfaces to reduce ambiguity and improve reliability.

Executive Chef / Internal Product Builder · Dennis Yacht Club

2023 — 2025

Massachusetts

  • Built internal software (ChefCalc, ChefTrack) to digitize inventory, pricing, and workflows.
  • Improved scheduling, forecasting, and team coordination by ~30% through automation.
  • Led a team of 6 and executed events for 200+ guests under pressure.

Full-Stack Developer / UX Designer · Freelance

2018 — 2024

Remote

  • Designed, built, and maintained custom web apps for small businesses and founders.
  • Modernized legacy systems — improving usability, performance, accessibility, and SEO.
  • Implemented authentication, dashboards, API integrations, and automated workflows.
Same person, three modes

Choose your champion.

Half in jest, fully true. The same instincts run through all three — curiosity, composition, and grace under pressure.

full-stack · blockchain · product

The Engineer

Takes systems apart, understands them, and builds them back cleaner.

Systems thinking9/10
Problem-solving9/10
Ship & iterate8/10
Learns anything10/10

Special abilities

  • Refactor — turns tangled code into something maintainable.
  • Full-stack range — design, frontend, backend, on-chain.
music production · sound healing

The Producer

Hears the whole arrangement before the first note is placed.

Creativity9/10
Composition8/10
Ear / timing9/10
Presence8/10

Special abilities

  • Resonance — tunes an experience until it simply feels right.
  • Improvisation — adapts fast to any key, genre, or constraint.
25 years · executive chef

The Chef

Runs a kitchen like a system: mise en place, then execute under fire.

Leadership9/10
Under pressure10/10
Consistency9/10
Craft9/10

Special abilities

  • Mise en place — everything prepped and in its place before the rush.
  • Kitchen command — leads a team through service without dropping a plate.
The toolkit

Frontend

  • React
  • Next.js
  • TypeScript
  • Tailwind
  • Vite
  • HTML / CSS

Backend

  • Python
  • Node.js
  • Flask
  • Django
  • SQL
  • PHP

Blockchain

  • Algorand
  • PyTeal
  • AlgoKit
  • Stacks
  • Solana
  • IPFS

Design / UX

  • Figma
  • Design systems
  • User research
  • WCAG a11y
  • Prototyping

DevOps

  • GitHub
  • CI/CD
  • Docker
  • Vercel
  • Firebase

AI & Security

  • Model evaluation
  • Prompt engineering
  • Human–AI interaction
  • Cybersecurity fundamentals
  • Identity & access
Learning never stops
  • Google Cybersecurity Professional Certificate
  • IBM Technical Support Professional Certificate
  • Google UX Design Professional Certificate
  • CS50x + CS50 Python, Web & AI — Harvard
  • Full-Stack Web Development Bootcamps
  • Associate of Arts — Cape Cod Community College
Charles in black, seated on a couch against a wall of industrial windows
Let's talk

Let's build something
worth using.

Open to Creative Technologist, full-stack, and product roles — remote or on Cape Cod. If it's interesting and I get to learn, I'm in.