Hello, I'm Sebastian.

Senior Frontend Developer & Fractional CTO with several years building web apps, mobile solutions, and design systems. Currently architecting a cycling app at Pedale while working on Web3 projects at The Sandbox.

Current Focus

Fractional CTO at Pedale

Designing full-stack architecture for a cycling app that records GPS routes, visualizes cycling data, and builds community features. Leading product roadmap and technical decisions while building with React Native, Supabase, and TypeScript.

React Native TypeScript Supabase Postgres Expo

Experience

Senior Frontend Developer

The Sandbox

Building NFT marketplace features, design systems, and internal tools. Working on microfrontend architecture and Vue 2 to Vue 3 migrations.

Vue.js React GraphQL AWS Lambda Web3

Software Developer

LEKTRI.CO

Developed cross-platform mobile app for EV charger management with real-time status updates and location services.

React Native JavaScript Mobile

Frontend Developer

GBE Technologies

Built custom betting features and integrated third-party services for international gaming platform.

React LESS APIs

Tech Stack

Frontend

React.js Vue.js TypeScript Tailwind CSS Design Systems

Mobile

React Native Expo Cross-platform

Backend & Tools

Node.js GraphQL AWS Lambda Supabase Jest

Specialized

Web3.js NFT Development Microfrontends Team Leadership

About

I'm a Senior Frontend Developer with extensive experience building web applications, mobile apps, and design systems. I've worked across diverse industries from Web3/NFT platforms to EV charging networks and gaming.

I enjoy solving complex technical challenges, mentoring junior developers, and architecting scalable solutions. Currently, I'm combining my love for technology and cycling as Fractional CTO at Pedale.

When I'm not coding, you'll find me exploring the latest video games, participating in hackathons, experimenting with new web technologies, or enjoying long cycling sessions. Gaming and hackathons fuel my passion for interactive experiences and rapid prototyping.