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Hello, I'm Cleiver. I'm a frontend and product-focused developer building web and mobile applications. My strongest area is React and Next.js, and I work across integrations, data and deployment.

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About me

I build working products, from requirements and interfaces to the integrations that make them useful. Frontend development is my strongest area, with React and Next.js for web and React Native for mobile. My independent work includes a healthcare CRM, a WhatsApp follow-up platform and mobile apps for habits and fitness.

I work with APIs, databases and deployment when a product needs them, and use AI-assisted tools as part of my development workflow. Outside of work, I enjoy training, coffee, video games and learning guitar.

My projects

Healthcare CRM

A private health insurance CRM for managing clients, policies, quotes, tasks and commissions. Built with operational workflows and role-based access in mind.

  • Next.js
  • TypeScript
  • Prisma
  • SQLite
  • PostgreSQL
  • Docker

Waflow

A multi-tenant platform for repair shops to register services and automate post-service WhatsApp follow-ups, with isolated tenant data and scheduled messaging.

  • Node.js
  • Express
  • SQLite
  • Baileys
  • Docker

HabitBox

An Android habit tracker with daily progress, streaks and a Free/Premium experience backed by authentication, PostgreSQL and RevenueCat subscription flows.

  • React Native
  • Expo
  • TypeScript
  • PostgreSQL
  • RevenueCat

StriveFit

A fitness app for planning routines, tracking workouts and reviewing progress. Its current sign-in flow connects to a separate API for user accounts and exercise data.

  • React Native
  • TypeScript
  • Expo Router
  • Zustand
  • Fastify

My skills