Carlos Santos

Carlos Santos

@caducodes

Software Engineer & macOS Developer

📍 Campinas, BrazilSoftware Engineer @ CI&T

I craft native macOS utilities in pure Swift 6 & SwiftUI leveraging direct Mach Kernel APIs and low-level system events. Concurrently, I build enterprise web platforms and distributed services at CI&T using Next.js, TypeScript, and Java / Spring Boot.

Flagship Native macOS Utilities

Open-source desktop applications built with Swift 6, SwiftUI, and low-level system frameworks.

OpenCleaner for Mac

v1.2.0 • Swift 6

Native disk visualizer, Mach Kernel RAM optimizer & developer build purger.

git clone https://github.com/carloseorsantos/open-cleaner-for-mac.git

Win+V for Mac

v1.1.0 • Swift 6

Native clipboard history bringing the Windows + V workflow to macOS with cursor HUD & auto-paste.

git clone https://github.com/carloseorsantos/win-v-for-mac.git

Work Experience

Professional engineering history delivering enterprise systems and desktop software.

Full-Stack Software Engineer

@CI&T
2020 – Present (4+ Years)Campinas - SP, Brazil

Engineered mission-critical web applications, high-throughput microservices, and modern frontend platforms for leading enterprise clients. Championed code quality, clean architecture, automated CI/CD pipelines, and high-performance user experiences.

  • Architected scalable web applications using Next.js, React, TypeScript, and Java / Spring Boot.
  • Designed and optimized RESTful APIs, caching strategies, and database integrations delivering sub-100ms response times.
  • Led technical initiatives around developer productivity, CI/CD automation, and modern frontend design systems.
  • Collaborated closely with cross-functional global teams across product, UX, and backend infrastructure.
TypeScriptReactNext.jsJavaSpring BootTailwind CSSREST APIsCI/CDDocker

Independent Systems & macOS Software Developer

@Open Source Creator & Native macOS Developer
OngoingCampinas - SP, Brazil

Crafting high-polish, open-source macOS native utilities using Swift 6, SwiftUI, and low-level system APIs. Focused on high responsiveness, zero telemetry, Mach Kernel performance, and delightful desktop UX.

  • Authored and published OpenCleaner for Mac, featuring squarified treemaps and direct Mach Kernel RAM compaction.
  • Built Win+V for Mac, introducing zero-latency clipboard auto-pasting and global Carbon hotkeys to macOS.
  • Engineered hardware-reactive utilities leveraging Apple Silicon kinetic vibration sensors (Hit Mac Hard & Soft).
  • Implemented automated CI/CD DMG packaging pipelines using GitHub Actions and native shell build tooling.
Swift 6SwiftUIMach Kernel APIsAppKitCarbon EventsGit & GitHub ActionsSPM

Technical Stack & Capabilities

Technologies, frameworks, and system APIs used across desktop and cloud projects.

Native macOS & Apple Ecosystem

Low-level system engineering and modern SwiftUI apps

Swift 6 / SwiftUIExpert

Declarative macOS apps, reactive state management, and modern concurrency.

Mach Kernel & System APIsAdvanced

Direct VM memory management, page allocation stats, and hardware sensors.

AppKit & Carbon APIsAdvanced

Global hotkeys, non-activating NSPanel windows, pasteboard monitors, and CGEvent synthesis.

Swift Package Manager (SPM)Expert

Modular multi-package architectures and zero-dependency builds.

Frontend & Web Engineering

High-performance reactive interfaces and design systems

TypeScript & JavaScriptExpert

Strict typing, functional patterns, asynchronous programming, and clean code.

Next.js 15 & React 19Expert

App Router, Server Components, SSR/SSG, hydration optimization, and routing.

Tailwind CSS & Shadcn UIExpert

Responsive layouts, frosted glassmorphism, design tokens, and fluid animations.

Framer MotionAdvanced

Layout animations, gesture interactions, and 60fps UI micro-interactions.

Backend & Systems Architecture

Scalable APIs, services, and cloud integration

Java & Spring BootAdvanced

Enterprise REST services, dependency injection, and scalable microservices.

Node.js & WebSocketsAdvanced

Real-time bidirectional event streaming and asynchronous server runtimes.

REST APIs & ArchitectureExpert

Idempotent API design, rate limiting, token authentication, and data contracts.

Databases & PersistenceProficient

PostgreSQL, MySQL, SQLite VACUUM optimization, and local JSON storage managers.

Tooling & DevOps

Continuous delivery, packaging, and developer workflows

Git & GitHub ActionsExpert

Automated CI/CD pipelines, DMG installer packaging, and release automation.

macOS Shell & AutomationExpert

Zsh / Bash scripting, ad-hoc codesigning, and release bundling scripts.

Vercel & Cloud DeploymentsExpert

Edge networks, serverless functions, automated preview branches.

Docker & ContainerizationProficient

Multi-stage builds, local development parity, and reproducible environments.