Preparing the machine.

C / 07

05 CHANNELS

Contact

HIRE / DIRECT LINE

Start a project.

PRIMARY
EMAIL
LANGUAGES
EN / PT-BR
BRIEF
PREFILLED BY SERVICE
Tulio Cunha / Computer SystemsINDEX 08 / 08
C / 07DIRECT LINE

Tell me what you are building.

Projects, contracts or a full-time role, abroad or in Brazil, in English or Portuguese. Email is the fastest way to start; a useful first message names the product, the constraint and the timeline.

SPECIMEN / CONTACTSP-C06MOUNTING
GRUNDIG FR-250 FIELD RADIOSIGNAL / AM FM SW / PORTABLEMODEL GHER / CC BY 4.0

LOCAL TIME / BRAZIL

Write opens your email client with the brief addressed. Nothing is stored or transmitted by this website.

BASE
BRAZIL / REMOTE
LANGUAGES
EN / PT-BR
AVAILABILITY
OPEN FOR PROJECTS + ROLES

02CHANNELS

Email reaches me directly. The rest are public profiles.

  1. 01
    PRIMARY

    EMAIL

    contact@tuliocunha.devProjects, full-time roles and collaborations. The fastest way to start.
    WRITE
  2. 02MOBILEWHATSAPP+55 32 9300-2094For a concrete project, in English or Portuguese.
  3. 03STUDIOINSTAGRAM@tuliopinheirocunhaDesign and motion in progress, and the work around the work.
  4. 04SOURCEGITHUBtuliopc23Open source, libraries, servers and the systems behind the work.
  5. 05PROFILELINKEDINTulio CunhaExperience, recommendations and the professional record.

For anything confidential, start with email.

03BRIEF

Write the Brief

Pick a service, answer the four prompts, and your mail app opens with the brief addressed. English or Portuguese.

  1. 01PRODUCTWhat you are building, and who it is for.
  2. 02CONSTRAINTSWhat is holding it back: technical, design or time.
  3. 03TIMELINEWhen a first useful version has to exist.
  4. 04CONTEXTPlatform, stack, and what already exists.

BRIEF / MAIL APP

This version opens your email client. Nothing is stored or transmitted by this website.

03 / Service

Opens Mail with the draft addressed and composed. Continue there to send.

Direct answers

Services, practice and engagement, answered before the first message. Anything not filed here goes by email.

Five, under one roof: full-stack web products (apps, platforms, portals, APIs), web design and interfaces (sites, product UI, design systems), immersive 3D and 2D experiences in WebGPU and Three.js, native Apple apps for iPhone, iPad and Mac in Swift and SwiftUI, and backends, systems and infrastructure (servers, databases, networking, containers and edge deployments).

Services on the About page

Yes. Real-time 3D, scroll-driven storytelling, custom shaders and post-processing for the web, built on WebGPU and Three.js and tuned to run smoothly on real phones and laptops. This site is the exhibit: the Apple II on the home page is a live WebGPU scene.

Watch the film

Yes, and that is the point. Layout, typography and motion are designed together with the data model and the code, by the same person, so nothing is lost between a design file and the build. The sensibility is Swiss and systematic: grid and type before decoration.

Yes. Native apps in Swift 6 and SwiftUI, with widgets, App Intents, Share and Safari extensions, local-first data and CloudKit sync. Cardmaniacs, a reader for iOS, iPadOS and macOS, is the example on file.

Cardmaniacs

I am based in Brazil and work remotely with clients worldwide, in fluent English. Brazil time (UTC-3) overlaps with the working day in the Americas and with the afternoon in Europe, so calls are easy to schedule.

Yes, in Portuguese and with the same quality bar. Brazilian companies are part of the client work on file, from LDR Advogados, a law firm platform, to marketplaces and publishing systems. Atendo empresas no Brasil em português.

Client work

Yes. LiqUIdify is an MIT-licensed React component library published on npm, and BoutiqueDB-Swift is an open persistence layer for Swift on Turso. Source and experiments are on GitHub.

Projects

Yes. I take on freelance projects and contracts, and I am open to full-time remote roles as a developer or designer. The fastest answer comes with a first message that names the problem, the constraints and the timeline.

With a short brief. Pick the service closest to your project and the form below opens with the right questions already in place: what you are building, where it stands, the timeline and the budget range. A useful brief gets a useful reply, and the next step is a call about scope and fit.

Write the brief

Email first for projects, roles and collaborations: contact@tuliocunha.dev. WhatsApp once the conversation is concrete. GitHub carries the source and experiments, LinkedIn the professional record.

SIDE B

SOURCE

Source.

Open source, libraries, servers and experiments live on GitHub, public as soon as they are ready to be read.

LiqUIdify, BoutiqueDB-Swift and the tools behind this site are filed there.

github.com/tuliopc23