Profile
Senior full-stack engineer (frontend, backend and mobile). I join product teams and ship: React and Next.js frontends, TypeScript / Node.js services and REST / GraphQL APIs, and React Native / Expo apps for iOS and Android. Most recently I have been building on an enterprise retail platform that directly processes roughly €10B in annual sales and is used by thousands of employees across 8+ countries — new Node.js services, frontend features, legacy modernisation and 2×–5× performance gains. Before that, six years of web, mobile and e-commerce delivery for international retail clients. Independent products from my playground are shown below.
What I can help with
- React & Next.js applications — new features, API integration and the evolution of existing frontends.
- TypeScript / Node.js backends — services, REST and GraphQL APIs, database and system integrations.
- Modernisation — incremental migration off legacy stacks, refactoring, performance work and faster build & deploy pipelines.
- Mobile — React Native / Expo apps for iOS and Android, from first build to the App Store.
- E-commerce — storefronts, checkout flows and integrations on Magento, Shopware and Saleor.
Experience
MediaMarktSaturn Technology11/2021 – Present
Germany · Remote
Tech Lead / Senior Software Engineer01/2025 – Present
- Design and build a new generation of Node.js services on GCP Cloud Run, replacing legacy Java systems.
- Ship frontend features in React and TypeScript for a business-critical internal retail platform used across 8+ countries.
- Hands-on in implementation, technical design and code review; own solution design and technical direction together with the Product Owner.
- Guide the practical adoption of AI-assisted engineering tools across planning, implementation and review.
- Mentor engineers and maintain engineering standards across delivery.
Stack: React, TypeScript, Node.js, GCP Cloud Run, Java-to-Node.js migration
Competency Lead / Senior Software Engineer05/2023 – 01/2025
- Owned technical decisions and engineering quality while staying hands-on in development.
- Refactored and rebuilt core features; key role in restructuring, legacy migration and long-term roadmap planning.
- Re-engineered build and deployment pipelines and added internal tooling — faster feedback for developers and users alike.
- Improved performance 2×–5× in selected areas so the platform holds up through peak trading (Black Week, Christmas).
Stack: React, TypeScript, Node.js, CI/CD, build & deployment pipelines, performance optimisation
Senior Software Engineer11/2022 – 05/2023
- Hands-on delivery across the retail platform: TypeScript, React, Node.js.
Stack: React, TypeScript, Node.js
Experienced Software Engineer11/2021 – 11/2022
- Joined the platform team and contributed to the move off the legacy stack.
Stack: React, TypeScript, Node.js
styleflasher.new media10/2015 – 11/2021
Germany · digital studio for e-commerce and mobileSix years, three roles
Head of Technology12/2020 – 11/2021
- Set the studio's technology direction — evaluated and introduced the stacks used across client web, commerce and mobile work.
- Delivered e-commerce platforms on Magento, Shopware and Saleor: storefronts, custom checkout flows and backend integrations.
- Shipped cross-platform apps in React Native and Expo, on Node.js, Vue.js and PHP (Laravel, Symfony) services.
Stack: React Native, Expo, Node.js, Vue.js, PHP, Laravel, Symfony, Magento 2, Shopware, Saleor
Full Stack Developer01/2017 – 12/2020
- Delivered production applications in React and React Native, using Redux, Apollo Client and GraphQL across complex commerce projects.
- Built storefronts and the services behind them for international retail clients.
Stack: React, React Native, Redux, Apollo Client, GraphQL, JavaScript
Senior Web Developer10/2015 – 01/2017
- Built and extended Magento 1 & 2, eZ Platform, Symfony and Laravel shops for retail clients.
- Carried the stack forward from jQuery-era code to ES6, Angular, React and React Native.
Stack: Magento 1 & 2, eZ Platform, Symfony, Laravel, JavaScript (ES6), Angular, React
Technabit — development studio01/2012 – 10/2015
Co-founder / Software Architect / Senior Developer
- Covered the full software lifecycle — requirements and analysis through design, delivery and maintenance.
- Built deep experience in software architecture, consulting, product delivery and hands-on development.
Printheos — e-commerce startup12/2012 – 09/2014
Co-founder / Lead Developer
- Startup Weekend 2012 — overall winner.
- Designed core features, SaaS architecture, REST API, data models and media-processing workflows on AWS S3.
Earlier Career
Comart d.o.o.
Software Developer (Contractor)
2010–2012
Team Vazquez Intl. S.L.
Web Developer
2007–2010
NTH Media d.o.o.
Operations / Web Dev
2008
Rama-Werk d.o.o.
Software Dev / Network Admin
2006–2007
Achievements
Enterprise Challenge Fund grant winner — Embassy of Sweden
2014blackbox.vc — Silicon Valley startup immersion program
2013Startup Weekend — overall winner (Printheos)
20122nd place — national high-school web development contest
2004Technical skills
| Employer & client work | Own products | |
|---|---|---|
| Languages | TypeScript, JavaScript (ES6+), Java, PHP, SQL | TypeScript, Kotlin, Python, SQL |
| Frontend | React, Next.js, Redux, Apollo Client, TanStack Query, Vite, Vue.js, Angular | React 19, Astro, TanStack Router / Start, Tailwind v4, Radix, i18next / Lingui |
| Mobile | React Native, Expo | Expo (custom native modules, EAS build & OTA), React Native for Vega OS (Fire TV), Kotlin / Jetpack Compose TV, Skia, StoreKit |
| Backend & APIs | Node.js, NestJS, Express, Koa, GraphQL, REST, OAuth, Laravel, Symfony | Hono, Bun, GraphQL (Pothos), REST + OpenAPI, Zod, Better Auth + passkeys, BullMQ, WebSockets |
| Data | PostgreSQL, MySQL, MongoDB, Redis | PostgreSQL with row-level security, Drizzle, SQLite / D1, Durable Objects, R2 / S3, full-text search |
| Cloud & delivery | GCP (Cloud Run), AWS, Kubernetes, Terraform, CI/CD, build & deployment pipelines | Cloudflare Workers / Pages / KV, Docker, GitHub Actions, Turborepo, self-hosted VPS |
| E-commerce & payments | Magento 1 & 2, Shopware, Saleor, eZ Platform, headless storefronts, checkout, ERP / PIM integrations | Stripe, Stripe Connect payouts, vouchers |
| Real-time & media | — | LiveKit, Daily, Web Push, Expo push, ffmpeg, HLS |
My Playground
Independent products I design, build and run — some on my own, some with friends and colleagues. A place to try different technologies and ship useful things end to end.
WiesnScoutwiesnscout.de
Real-time Oktoberfest reservation monitoring and alerts across 19 tent systems, with availability delivered within seconds.Expo · Cloudflare Workers · Durable Objects · multi-channel push
SarmaPlayersarmaplayer.com
Cross-platform IPTV player ecosystem for TV, iOS, Android and web, with owner and operator management applications.Kotlin / Compose TV · SwiftUI · React · Hono · PostgreSQL · Redis
Photo Trimphoto-trim.com
Privacy-first iOS photo cleanup for large media libraries, with fully on-device analysis and a Cloudflare-native backend.React Native · Expo · Skia · op-sqlite · Workers · D1 · R2
Mammitomammito.de
Multi-tenant care platform with provider discovery, booking, payments, encrypted video and a dedicated provider cockpit.React · Astro · Hono · PostgreSQL RLS · Stripe Connect · LiveKit / Daily
More in my playground: Active Join · My Photo Copy · Content Studio · CameraBridge · PointPal · Live Wall · SkiWilla
Screenshots, notes and NDA-safe client outcomes: dedic.dev/cv/playground