Swift Student Challenge 2026

Antônio Paes Developer

iOS Developer & Backend Engineer.
Building technology that gives people a voice.

See Juru GitHub
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I believe technology should remove barriers, not create them. The most powerful software is the kind that gives someone their voice back.

Swift Student Challenge 2026

Introducing Juru.
Your face. Your voice.

A Swift Playground built entirely with ARKit and SwiftUI that transforms subtle facial gestures — eyebrow raises and lip puckers — into typed text and synthesized speech. Designed for people living with ALS, cerebral palsy, and spinal cord injuries.

Juru
Tupi-Guarani for "Mouth"

A smile-shaped seed, ready to bloom into your new voice. Raise your eyebrows to navigate. Pucker your lips to select. Speak — no hands required.

🧠
ARKit Face Tracking
ARFaceAnchor blendshapes with sub-frame latency. Detects eyebrow raises and lip puckers uniquely calibrated to each user.
🎯
Personal Calibration
Learns the unique facial range of each individual. Safe for users with severe motor constraints — hysteresis prevents accidental triggers.
🔊
Real-time Speech
AVFoundation synthesizes composed text into natural speech instantly. From thought to voice in seconds.
Accessibility First
VoiceOver labels, hints and traits on every element. Built from the ground up for the people who need it most.
SwiftSwiftUIARKitAVFoundationCombineSwift PlaygroundsARFaceAnchorAccessibility
Projects

Things I've built.

Experience

Where I've worked.

Aug 2025 → PresentCurrent
Intern — Native Application Development
CESAR
Developing native iOS applications at one of Brazil's most prestigious tech institutes. Working directly on production Swift codebases with ARKit, SwiftUI, and Core frameworks alongside senior engineers.
Feb 2025 → Feb 2026
Programming Tutor — C Language
CESAR School
Teaching imperative and functional programming in C. Weekly group and individual tutoring on pointers, dynamic memory allocation, recursion, and control flow. Contributing to measurable reductions in course failure rates.
Feb 2025 → Aug 2025
Full Stack Developer Intern
Cloudin
Built React.js + TypeScript hotel management dashboards for real daily clients. PHP backend with Firebase. Automated critical onboarding workflows, reducing new client setup time by 40%.
Aug 2024 → Dec 2024
Full Stack Developer
CAIS — Agricultura Familiar
Led end-to-end development of Plantage, an agricultural management app (Django + Tailwind CSS), from requirements gathering through Cypress E2E testing and client sign-off.
About

A little about me.

I'm a Computer Science student at CESAR School in Recife, Brazil — simultaneously pursuing a degree in Economics at UFPE, with a GPA of 8.75/10.

My path started with PHP and Firebase at a hotel-tech startup, moved through Django and Python in agri-tech, and found its home in the Apple ecosystem — Swift, SwiftUI, and ARKit.

I believe the best code is invisible — it just works, for everyone. That philosophy drives everything from Juru's accessibility-first architecture to the efficiency gains I've automated in production.

Outside code: curious about economics, obsessed with clean interfaces, always hunting for the problem that matters most.

8.75
Academic GPA at CESAR School
40%
Faster client onboarding at Cloudin
5+
Languages & stacks in production
C1
English proficiency level
Skills

The tools of the trade.

iOS / Swift
Swift
SwiftUI
ARKit
AVFoundation
Combine
Backend
Java / Spring Boot
PHP
Python / Django
C
Node.js
Frontend
TypeScript
React.js
Next.js
Tailwind CSS
HTML / CSS
Data & Cloud
PostgreSQL
Firebase
Supabase
AWS / Azure
Docker
Contact

Let's build
something great.

Open to collaborations, opportunities, and good conversations about technology. Reach out anytime.