Backend & API Development

My name is Julian Geißler and I develop Backend Systems and APIs for your project. I have over 5 Years of Experience and a Master in Computer Science

Technologies: PHP, Laravel, Python, Django, Postgresql, Docker, REST APIs, Microservices

Custom Software Solutions made in Germany

Backend and API Development Services

Robust Backend Systems and APIs for Web Apps

REST APIs

Development of tailored interfaces that seamlessly integrate your existing systems and automate business processes

Modular Architecture

Development of independent services that can be individually scaled and updated - for maximum adaptability

Scalable Systems

Backend architectures that grow with your business and reliably function even under high load

Datadriven Solutions

Data management and processing for better business decisions and automation

About me

Serving clients worldwide

Based in the technology region between Frankfurt, Darmstadt, Mannheim, and Worms, I provide professional web 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 - Backend Developer

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

PokePreise

Personal project (Archived). Display of graded Pokémon card sales prices from eBay with SEO blog.

NextJS, TypeScript, React, TailwindCSS, Django, Python, eBay Scraping

Contact

Talk to me

As a backend developer, I help you bring your digital ideas to life

Call: +49176 99660156

E-Mail: julian@juliangeissler.de

My Socials

More Services

Modern web applications

Development of high-performance and SEO-optimized web applications using Next.js and React. From business websites to complex web apps

AI Integration & Automation

Integration of AI services and development of automated workflows for your business. From ChatGPT to custom AI solutions

Technical SEO

Optimization of your website's technical foundation for better search engine rankings and improved user experience

Headless CMS Development

Flexible content management solutions with modern headless CMS for maximum freedom in frontend development

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