Freelancer profile translated to English.
Back to original languageAbout Sage
With over 5 years of experience in developing high-performance web applications, I help companies transform complex requirements into clean, maintainable, and performant React frontends.
My focus is on technical excellence:
Core Tech: Deep-dive expertise in React.js, Next.js, and TypeScript.
Performance & State: Optimization of loading times and complex state management (Zustand, Redux, React Query).
Software Quality: Test-Driven Development (Jest, Cypress) and clean architecture patterns for long-term scalability.
Let's talk about your vision.
English
Native or bilingual
German
Fluent
Can work on-site
Frankfurt am Main (up to 50km)
Experience
- AnimebookFull-Stack Software EngineerTECHApril 2023 - January 2026 (2 years and 9 months)Solo-built a social media platform for content creators to publish, own, and monetize their work through integrated payment processing. Platform currently serves 500+ monthly active users. Built real-time video streaming architecture, allowing creators to go live and interact with followers. Built multilingual translation system with automatic language detection, allowing users to view content in their preferred language. Designed relational database architecture using PostgreSQL (Supabase) with optimized queries and table joins for user profiles, content collections, and activity feeds.
- SharpeBack-End EngineerTECHMay 2022 - November 2023 (1 year and 6 months)Created company's Taurus product which led to a $50,000 grant from Polygon in our 2022 SEED round. Integrated third-party APIs for financial data processing and external service communication.
- StoryblokGuest Technical WriterSOFTWARE PUBLISHINGFebruary 2023 - May 2023 (3 months)With the assistance of Storyblok's open-source API documentation, I was able to provide a useful guide for building dynamic forms with the Storyblok headless CMS and Nextjs.
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Education
- Master's in Computer ScienceUniversity of Amsterdam2025Master's in Computer Science