Julian Geißler - Web Developer
My name is Julian Geißler from Germany and I develop modern Web Apps, Backend Systems and integrate AI.
I have over 5 years of experience and a Master of Science in Computer Science
Technology: PHP, Laravel, JavaScript, TypeScript, React, NextJS, Python, Docker
Custom Software Solutions Made in Germany 🙂
My Services
Backend & API Development
Development of scalable backend systems and APIs using modern technologies like Laravel and Django. Focus on maintainability and performance
- REST APIs
- Database-Design & Optimization
- Microservice Architecture
- Security & Authentication
Modern web applications
Development of high-performance and SEO-optimized web applications using Next.js and React. From business websites to complex web apps
- Software as a Service (SaaS)
- MVP Development
- Payment Integration like Stripe
- Headless CMS Integration for Content
AI Integration & Automation
Integration of AI services and development of automated workflows for your business. From ChatGPT to custom AI solutions
- ChatGPT & OpenAI Integration and more
- Custom GPTs, Chatbots
- Local LLM (Ollama, DeepSeek)
- Midjourney, Kling for Images and Video
Technical SEO
Optimization of your website's technical foundation for better search engine rankings and improved user experience
- Mobile First & Responsive Design
- PageSpeed Optimization (Core Web Vitals)
- h1 bis h6 structure & Schema.org
- Crawlability & Indexing (Sitemap)
Headless CMS Development
Flexible content management solutions with modern headless CMS for maximum freedom in frontend development
- Prismic & Payload Integration
- Content Modelling
- API-First Architecture
- Performance Optimization
DevOps & Cloud-Hosting
Professional deployment and hosting of your applications. From development to production in the cloud
- AWS & Vercel Setup
- Selfhosting on own servers
- Docker & Containerization
- Coolify & Hetzner Setup
- Deployment Pipelines (CI/CD)
- Monitoring & Maintenance
About me
Serving clients worldwide
Based in the technology region between Frankfurt, Darmstadt, Mannheim, and Worms, I provide professional web development and software development primarily remotely for clients worldwide. When needed, I’m also available for important meetings in person in the Rhine-Main region.
Julian Geißler - Programmer
With over 5 years of experience and a Master’s degree in Computer Science, I offer technical expertise and direct communication. My focus is on scalable solutions using Next.js, React, Laravel, and Django, complemented by AI integration and technical SEO. From conception through development to hosting, I guide your project with tailored solutions and a clear understanding of your business requirements
My region in Hesse: Frankfurt, Darmstadt, Mannheim, and Worms
Selected Projects
From SaaS, charitable foundation websites, SEO-optimized landing pages to personal projects
RapidPipeline
SaaS from Darmstadt for 3D model optimization. Responsible as Full Stack Developer
PHP, Laravel, TypeScript, React, NextJS, Python, Docker, Stripe
Lugredu Stiftung
Charitable foundation from Giessen. Relaunch of SEO-optimized main page, membership and donation pages
NextJS, TypeScript, React, Stripe, Resend
Daderma
Dermatologist from Darmstadt. Relaunch with SEO-optimized service pages and integration of appointment booking software
NextJS, TypeScript, React, TailwindCSS
SEOhorse
SEO agency from Griesheim. Launch with SEO audit product, blog, and free tools with AI integration
NextJS, TypeScript, React, TailwindCSS, OpenAI, Prismic
holycow
Personal project. Directory page for steak tastings, meat online shops, reviews, and blog posts. Google SEO optimized
NextJS, TypeScript, React, TailwindCSS, Payload 3
PokePreise
Personal project (Archived). Display of graded Pokémon card sales prices from eBay with SEO blog.