Jörn Dyherrn

Projects & references

Selected projects from over 10 years of development experience.
From startups to enterprise clients.

// Projects

Selected work.

Platforms, apps and products — from concept to production.

01Live

bockapp.de

Spontaneous activities with friends

My own product from concept to production: post an activity (emoji, title, time), friends get push & email and RSVP with a single tap — everyone who's in automatically joins the live group chat. Next.js PWA with PostgreSQL, real-time via server-sent events, web push and custom auth, deployed with Docker and Caddy on Hetzner.

  • Next.js
  • TypeScript
  • PostgreSQL
  • PWA
Screenshot of bockapp.de
View project
02Live

byd-schiffe.de

Live tracker for BYD car carriers

My own product answering one question: when does the next BYD ship arrive in my country? A live map of every BYD car carrier from AIS data, dead reckoning along real sea routes when a ship is out of range, and arrival forecasts based on each port's calling rhythm. Bilingual, with landing pages for 46 countries and 39 ports, structured data and llms.txt for AI search engines. Next.js 16, PostgreSQL with Drizzle and MapLibre GL.

  • Next.js
  • TypeScript
  • PostgreSQL
  • MapLibre
Screenshot of byd-schiffe.de
View project
03Live

audinom.com

Learning platform for musicians

Full-stack development of an innovative learning platform that teaches music through the ear instead of through notation. React frontend, Node.js backend and cloud infrastructure with audio streaming and interactive exercises.

  • React
  • Node.js
  • AWS
  • TypeScript
Screenshot of audinom.com
View project
04Shipped

buchgefuehle.de

Feelings instead of stars

Concept and development of a community platform where readers rate books by feelings instead of star ratings. Nine emotion colours form a collective mood for each book — readers filter titles by emotion, discover authors and watch the community grow with every vote. Built with Laravel and a bespoke, literary design language.

  • Laravel
  • PHP
  • Tailwind CSS
  • MySQL
Screenshot of buchgefuehle.de
View project
05Shipped

fanbloc.gg

Fan engagement platform

Development of an interactive fan engagement platform for sports clubs and content creators. Real-time features, gamification and social integration.

  • React
  • React Native
  • GraphQL
  • Real-Time
Screenshot of fanbloc.gg
06Shipped

wallfair.io

Event trading platform

Frontend architecture and development of an event trading platform with real-time data visualization, live-streaming integration and complex state management.

  • React
  • TypeScript
  • WebSocket
  • D3.js
Screenshot of wallfair.io
07Prototype

hauswertpro.de

AI-powered real estate valuation

Development of an AI-powered platform for real estate valuation. Users upload documents such as exposés and financial plans and receive an automated analysis with price estimates and key figures.

  • React
  • Next.js
  • TypeScript
  • AI/ML
Screenshot of hauswertpro.de
View project
08Prototype

sparrail.de

Smart rail journeys

A platform for intelligent ticket splitting on rail journeys. Automatically analyses cheap combinations of single tickets and regional passes to reduce travel costs by up to 70%.

  • React
  • Next.js
  • TypeScript
  • Node.js
Screenshot of sparrail.de
View project

// Contact

Got a project in mind?
Let's talk.

Email

kontakt@dyherrn.dev

Phone

+49 176 72478078

Location

Robert-Blum-Str. 19, 06114 Halle (Saale)

Whether it's a web app, mobile app or technical advisory — I look forward to hearing from you. Tell me about your project and we'll find the best solution together. Typical response time is under 24 hours.

Get a project estimateBook a callSend an email