Hello.
I'm Cato, a software engineer based in Berlin.
I'm currently open for freelance projects! Let's build something great together.
Recent Projects:
Careproofed - Donation recommendation platform
Loyalties - Customer loyalty mobile app
Zero Circle - 0% product & place web platform
My tech stack:
React, React Native, Next.js, Javascript, TypeScript, Ruby on Rails, and more.
I'm currently open for freelance projects! Let's build something great together.
React, React Native, Next.js, Javascript, TypeScript, Ruby on Rails, and more.
Loyalties is a mobile app that helps small businesses attract and retain customers through customizable digital reward systems. It replaces outdated paper cards with a sleek, easy-to-use solution and makes it simple for customers to keep all their loyalty rewards in one app. I led the engineering, building the platform end-to-end with React Native for the mobile app, a Ruby on Rails API backend, and PostgreSQL on Fly.io, while collaborating with a designer on the user experience.
Zero Circle is a web platform that helps people discover and explore zero-percent products and places. From alcohol-free drinks to cafés and shops offering alternatives. It combines a clean marketplace experience with multi-language support, ratings, and favorites, making it easy for users to find and enjoy new options. I led the engineering, building the platform end-to-end with Next.js, TypeScript, Prisma, and PostgreSQL, hosted on Vercel, while collaborating with the team that developed the concept and design.
Careproofed is a donation recommendation platform that helps people discover NGOs aligned with their values. Users are guided through a personalized flow that surfaces causes and organizations they care about, making charitable giving more intentional and informed. I led the engineering, building the platform end-to-end with Next.js, TypeScript, and PostgreSQL, while collaborating closely with the team on product direction and design.