Felix Vemmer

👋 Welcome to my personal website

Hey, I am Felix, a full-stack developer and Indiepreneur based in Berlin. You will find straight-to-the-point insights and practical advice on Python, TypeScript, and all things full-stack.

Skills - What Can I help you with?

I am a self-taught programmer with a CEMS Master in International Management. Having both a business and deep technical understanding allows me to easily communicate complex technical ideas with business stakeholders.

Full-Stack Development

Build and ship the next modern frontend application to power your individual idea.


Javascript, Typescript, CSS, HTML

Tools / Frameworks

  • Next.js / Next14
  • Tailwind CSS & UI / Daisy UI / ShadcnUI
  • React Hook Form
  • Tanstack Table
  • Clerk Auth
  • Drizzle ORM
  • Directus & Strapi CMS

Data & AI Services

Derive better insights and build new data products with a scalable data warehouse and custom data pipelines.


Python, SQL

Tools / Frameworks

  • Langchain, Instructor, CrewAI
  • Postgres: Neon / Supabase
  • DBT
  • Pandas
  • Modal
  • Superset
  • Airbyte
  • Great Expectations
  • FastAPI

Business & Marketing

Learn how to how to optimize your current business or get feedback on a complete new business idea.


SEO & SEA, Agile Sprints, BizDev

Tools / Frameworks

  • Ahrefs
  • Google Search Console
  • Google Tag Manager
  • Posthog
  • Linear
  • Pipedream

Blog - The latest from my blog

Testimonials - What Clients and Readers Say

“Felix expertly guided our transition from Wordpress to Next.js, translating complex frontend concepts into clear terms. His detailed insights on SEO, from performance to meta tag nuances, were invaluable. He also advised on blog setup and CMS suitability for our needs, and efficiently assisted with integrations like Mailchimp. Felix's broad tech knowledge and business acumen make him an invaluable asset. I highly recommend him for his ability to merge technology and business insights to deliver real value.”

Perjan Duro
Co-Founder at MoneyCoach.ai

“I collaborated with Felix on a project for DezentralizedFinance.com to create a scalable logo map SaaS tool. Felix was professional, timely, and efficient. He excelled in communication, adapting to my vision of integrating a prototype with Google Sheets. With his expertise, especially in image rendering with Vercel OG Image, he closely matched my expectations, needing only slight style adjustments. What stood out was Felix's understanding of my workflow and needs. The prototype's value for money is impressive, and I look forward to future projects with him. I highly recommend Felix for his exceptional work and client-focused approach, solidifying his freelancing reputation.”

Julian Richter
Founder at DezentralizedFinance.com

“This is an awesome blog post. Thanks!”

Michael Frieze

“This is a good summary! I’m glad you enjoyed the book, and thanks for sharing your thoughts.”

Rob Walling
Author of the SaaS Playbook

“Thank you very much for creating this article. I am a beginner with Next.js, and I found your piece extremely helpful. It also led me to explore the rest of your impressive blog 🤩”

Pierre Rognion
AI Manager @Twelve Consulting

“Used it today, and I agree, it's fast as hell. Fun fact, I started using @cursor_ai because of your blog post months ago, and I can't ever go back, so thank you so much!”

Vivian Guillen

“Many thanks for your detailed and informed advice on choosing a tech stack for our health startup. The level of detail in your assessment was unexpected and highly appreciated. Your checklist, with its clear and useful tips, has been invaluable—it pointed out things we hadn't thought of by ourselves.”

Daniel Biene
Digital Entrepreneur

“As a recent bootcamp grad who is often overwhelmed by how much is out there and how the bar seems so much higher for a chance at employment, stuff like this is super helpful. Really appreciate it! It was nice to see some of my current frameworks included”


“@felixvemmer thank you for the @lmsqueezy setup walk-through blog post you have! I was having a hard time figuring out how to test my webhooks locally and you saved me a bunch of time with your article!”

Dorian Develops

Book a Meeting - Interested in Working together?