Jörn Dyherrn
Open for new projects

I build digital
products that resonate.

Software engineer with 9+ years of experience. React, TypeScript & Node.js — based in Halle (Saale), Germany, working with clients across the DACH region and remote.

terminal
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// About

9 years of code & product.

From idea to deployment — I build digital products and guide them through the entire lifecycle.

Background

I have been building digital products since 2017 — starting as a part-time developer, then leading engineering at an agency, and now working as an independent freelancer. Over 50 projects shipped from concept to production, 15+ apps published to the stores, and clients across many industries supported in turning their digital vision into reality.

As a freelance software engineer, I bring this experience directly to your project. No overhead, no agency markup — senior engineering with a modern stack of React, TypeScript and cloud solutions. From high-performance web apps to native mobile applications.

Jörn Dyherrn

Jörn Dyherrn

Halle, Germany

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Years of experience

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Projects

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Apps shipped

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Happy clients

Tech Stack

ReactNext.jsTypeScriptTailwind CSSReduxReact NativeExpoiOSAndroidNode.jsExpressREST APIsGraphQLAWSVercelDockerCI/CDGitHub ActionsReactNext.jsTypeScriptTailwind CSSReduxReact NativeExpoiOSAndroidNode.jsExpressREST APIsGraphQLAWSVercelDockerCI/CDGitHub ActionsReactNext.jsTypeScriptTailwind CSSReduxReact NativeExpoiOSAndroidNode.jsExpressREST APIsGraphQLAWSVercelDockerCI/CDGitHub Actions
// Services

Fullstack. Mobile. Cloud.

From landing page to scalable SaaS platform — everything from a single source.

01

Web development

Modern, high-performance web applications with React and Next.js. From landing pages to complex SaaS platforms — with a focus on SEO, accessibility and fast load times. Responsive design and a polished user experience come as standard.

  • React
  • Next.js
  • TypeScript
  • Tailwind
02

Mobile development

Cross-platform apps with React Native for iOS and Android. Native performance from a single codebase, seamless integration of push notifications, offline functionality and App Store deployment.

  • React Native
  • Expo
  • iOS
  • Android
03

Cloud & DevOps

Scalable cloud infrastructure on AWS with automated CI/CD pipelines and container deployments. From architecture planning and infrastructure as code to monitoring and alerting.

  • AWS
  • Docker
  • CI/CD
  • Vercel
04

Advisory & consulting

Technical advisory, code reviews and architecture decisions for new and existing projects. Drawing on 50+ shipped products for grounded recommendations on tech stack, scalability and best practices.

  • Architektur
  • Code Review
  • Agile
  • Mentoring
// 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

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
03Live

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
04Live

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
05Live

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
06Shipped

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
07Shipped

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

// Intro call

Let's talk.

Book a free intro call — in 30 minutes we'll figure out, with no obligation, whether and how I can move your project forward.

  • Free & non-binding
  • 30 minutes
  • Video or phone

// 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.