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Solo builder. Senior engineer.
I build stuff that scales.

Klarschritt is the studio behind my independent work, based in Berlin, Germany. I consult startups on systems and scale, mentor engineers, and ship my own software: Notenz, Flxify, DeliveryHero.fyi and Hawsaba.

Work with me
10+
Years Engineering
7
Independent Ventures
2.8k+
YouTube Subscribers
Berlin
Based In

About Ahmed Taweel

I'm a solo builder and engineer. I consult startups on systems and scale, and I mentor people who want to grow as engineers. On the day job side, that's 10+ years bridging infrastructure and product, including co-owning traffic steering for millions of orders a day at Delivery Hero, where I design systems that stay observable, evolvable, and cost-aware as they grow. Outside of that, I build my own products too, like Notenz, a secure digital legacy layer, and Flxify, a text-transformation toolkit for engineers.

Tech Stack

Golang Python Terraform PostgreSQL Docker Kubernetes gRPC Kafka AWS GCP

Product & Solo Building

Startup Consulting Engineering Mentorship Indie Shipping Technical Writing Audience Building Go-to-Market
Work with me View LinkedIn

Independent Ventures

Software products and publications I build and run on the side.

Notenz

Digital Legacy

A secure, automated digital legacy layer for encrypted data delivery.

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Privacy Tools

By Notenz

7 free, zero-knowledge privacy tools that run entirely in your browser: encryption, password generation, metadata removal, and more.

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Flxify

Dev Utility

A high-performance text transformation toolkit for engineers, with 110+ utilities and counting.

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DeliveryHero.fyi

Data & Insights

A data-driven live insights and forecasting portal for Delivery Hero SE.

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Hawsaba | حوسبة

Tech Publication

An Arabic tech publication turning complex industry topics into accessible content for thousands of engineers.

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YouTube

2.8k+ Subscribers

Engineering and career content, from system design deep-dives to honest career advice.

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ShouldaSaid

Debate Game

A competitive debate game: three rounds against an AI opponent, with XP, badges, and a leaderboard. Win the argument you rehearsed in the shower.

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Work with me

Consulting and 1:1 mentorship for founders and engineers. See how we can work together.

Free

Discovery Call

Start with a free conversation about your startup's systems, scale, or product challenges.

Learn about consulting
Paid

Mentorship

Focused 1:1 support for career growth, system design, and tough technical decisions.

Explore mentorship
Coming soon

Community

A small, invite-only Discord for builders and mentees. I'm inviting people in gradually.

Get in touch

What people say

Real feedback from 68 sessions on Topmate.

“Ahmed was supportive, realistic, and generous with his time. He went beyond the session to understand my personal situation and career background, and shared insightful, practical advice that helped me gain clarity and plan my next career steps. The session was friendly, honest, and very valuable.”

Taghreed Mohammed Kamel, via Topmate

“Ahmed grounded me to the reality in the most friendly way. That’s what a mentor should have.”

Verified mentee, via Topmate

“Thank you for the informative session. It helped me prepare a session in my company for multi-agents’ workflow.”

Verified mentee, via Topmate

“This course was incredibly useful and well-organized. The best part for me was learning how to use the new tools, which definitely added a lot of value to my skillset!”

Verified mentee, via Topmate

“It was a very helpful and insightful session.”

Verified mentee, via Topmate

View all 68 reviews on Topmate

Let's build something scalable.

Drop me a message. Happy to talk infrastructure, products, consulting, or mentoring.

[email protected] Work with me LinkedIn