Jan Riethmayer – Medium

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Jan Riethmayer

How we invalidated 7 business ideas in 4 months

The main reasons startups fail are that they don’t work on a real problem or their solution is not good enough. — Marty Cagan, SVPG

5 min readFeb 24, 2022

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How we invalidated 7 business ideas in 4 months

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The hedgehog concept of Zencargo’s engineering strategy

My biggest learning is the importance of documenting and over-communicating your strategy so people understand the underlying assumptions…

4 min readMay 20, 2021

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The three circles of the hedgehog concept

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Hello World, introducing Jan Riethmayer.

Introducing myself as the RADICAL CTO. I am an evangelist of a radically inclusive and courageous culture. This is the “initial commit” to…

3 min readMay 12, 2021

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Hello World, introducing Jan Riethmayer.

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Startup Stash

Why I left Zencargo

3 min readMay 13, 2021

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Why I left Zencargo

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Jan Riethmayer

Deis Workflow + Kubernetes + AWS

This summarizes the few important details I had to configure to get Deis Workflow ready on AWS.

5 min readJul 29, 2016

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Deis Workflow + Kubernetes + AWS

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Jan Riethmayer

How to choose the right startup to join as a technical leader

I moved from Berlin to London two weeks ago, looking for a new opportunity. I’ve been the CTO for a Berlin-based start up for the past 4.5…

4 min readApr 23, 2016

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Jan Riethmayer

Jan Riethmayer

People say they join companies because of what I stand for. My expertise is building businesses as CTO, from inception to scale. radical-cto.com

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