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JeremyTheo

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Co-Founder & CTO @ UMH (www.umh.app)

meet.hn/city/de-Cologne

Socials: - linkedin.com/in/jeremy-theocharis - github.com/Jeremytheocharis - x.com/Jmtheocharis

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Posts17
Comments21
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www.theocharis.dev 6d ago

The LLM Critics Are Right. I Use LLMs Anyway

JeremyTheo
311pts310
www.theocharis.dev 2mo ago

We should get rid of average CPU utilization

JeremyTheo
32pts23
www.theocharis.dev 6mo ago

Kidnapped by Deutsche Bahn

JeremyTheo
1187pts1031
improbable.com 10mo ago

IG Nobel Prize Winners 2025

JeremyTheo
163pts47
learn.umh.app 1y ago

What Is MQTT? Why Most MQTT Explanations Suck–and Our Attempt to Fix Them

JeremyTheo
5pts0
www.theocharis.dev 1y ago

The algorithmic framework for writing good technical articles

JeremyTheo
8pts0
learn.umh.app 1y ago

AWS and Azure Are at Least 4x–10x More Expensive Than Hetzner

JeremyTheo
131pts138
learn.umh.app 3y ago

United Manufacturing Hub Relicensed to Apache 2.0

JeremyTheo
3pts0
www.umh.app 3y ago

Comparing MQTT Brokers for the Industrial IoT

JeremyTheo
5pts4
www.umh.app 3y ago

Historians vs. Open-Source Databases

JeremyTheo
2pts0
www.gwern.net 4y ago

Lizardman Constant in Surveys

JeremyTheo
3pts1
www.umh.app 4y ago

Tools and Techniques for scalable data processing in Industrial IoT

JeremyTheo
3pts0
www.cloudflare.com 4y ago

How do lava lamps help with Internet encryption?

JeremyTheo
2pts1
www.whitehouse.gov 4y ago

Moving the U.S. Government Toward Zero Trust Cybersecurity Principles [pdf]

JeremyTheo
2pts0
docs.umh.app 4y ago

An intro into certificates and secure communication in IoT for normal people

JeremyTheo
6pts0
docs.umh.app 4y ago

Node-RED: How an open-source tool is establishing itself in Industrial IoT

JeremyTheo
91pts28
github.com 4y ago

United Manufacturing Hub is an Open-Source and secure industrial IoT platform

JeremyTheo
3pts0

There is also the concern that a single pod shouldn’t be able to take down an entire node. So there needs to be some safety levels. But then also not. I find this is a really complex issue which is not widely known (only in Kubernetes bubble)

Cologne, Germany | UMH | Product Engineer | Full-time | 55 - 85k EUR | ONSITE (part remote)

Hi, Alex and Jeremy here from UMH.

8 years ago, Jeremy was absolutely frustrated with the status quo of data infrastructure in manufacturing. Companies paid millions per year for "shitty 90s software" and are still doing that today, when there is much better software out there for open-source. So we decided that we can do this better, first founded a System Integrator, realized most of the tasks in setting up and maintaining a data infrastructure can be standardized, and decided to found the currently VC-backed UMH, which is built on open source software and is open source itself.

What we're actually building: We build and scale a real-time data platform that runs hundreds of Benthos pipelines inside a single Docker container (UMH Core), processing millions of industrial messages that control actual production processes.

Plus a local-first user interface (Management Console) where both non-technical factory workers and power-users/developers can work together. And yes, we care about UI in enterprise/industrial software.

https://www.umh.app/careers/product-engineer-f-m-d-55-85k-eu...

Cologne, Germany | UMH | Product Engineer | Full-time | 55 - 85k EUR | ONSITE (part remote)

Hi, Alex and Jeremy here from UMH.

8 years ago, Jeremy was absolutely frustrated with the status quo of data infrastructure in manufacturing. Companies paid millions per year for "shitty 90s software" and are still doing that today, when there is much better software out there for open-source. So we decided that we can do this better, first founded a System Integrator, realized most of the tasks in setting up and maintaining a data infrastructure can be standardized, and decided to found the currently VC-backed UMH, which is built on open source software and is open source itself.

What we're actually building: We build and scale a real-time data platform that runs hundreds of Benthos pipelines inside a single Docker container (UMH Core), processing millions of industrial messages that control actual production processes.

Plus a local-first user interface (Management Console) where both non-technical factory workers and power-users/developers can work together. And yes, we care about UI in enterprise/industrial software.

https://jobs.umh.app/

Yes it is! And yes it was a typo! Thank you for finding the link to it. I was trying to find it before but couldn’t find it in official sources, DB deleted it from the official app. It did not stop at Troisdorf though.

It is operated by National Express, but I guess the routing comes from some other company (likely InfraGo)

Kicked Off = we have to stop for some technical reasons that are further unspecified, and everyone has to leave the train because we are driving now in the opposite direction. a replacement bus is coming. Once every hour. With a capacity of 8 people. In some cow village 50km far away from the next city. With no cab service available. Thats was what i meant

What facts are missing in your opinion?

I know how sketchy it sounds, and it was even documented in DB Navigator. But DB makes this information inaccessible a couple of days later in the app, so there is no way to „proof“ it except asking DB itself.

The article was originally intended at manufacturing companies, not at IT startups, that currently go "all-in" on AWS and Azure with all of their managed services, when actually 95% of their workloads are in virtual machines, and the remaining stuff could easily be handled on a single VM. Or maybe a couple of VMs and a managed postgres somewhere (e.g., maybe even at AWS or Azure).

Would probably give them way more budget in actually building applications than running the infrastructure.

Maybe I'll extend the article to include the point of using a managed postgres at AWS / Azure / fly.io, whatever, in combination with Hetzner VMs.

Maybe this is not relevant for all industries, but in our experience in manufacturing it is for most companies an immediate no-go. Because these companies are not interested in using the open-source variant, they want to partner up with the company behind it. And in the case of EMQ, this is additionally quite difficult to pinpoint with whom one will be conducting business with.

I wanted to post the same. I am German and I am using it for my daily tasks. It combines the easy to program US layout with easy access to German Umlauts Ä, Ö, Ü, ß.

Highly recommended. No idea though for any other languages other than German.

Very interesting idea! Thank you!

I would not move it between Node-RED and the PLC but I see other applications of a data diode. We usually create a very small DMZ around each machine and a data diode can additionally protect it (see also a very old article from us: https://docs.umh.app/docs/getting-started/usage-in-productio... ) You could place the data diode as a "firewall" between the internet and the edge PC.

Fully agreed!

Being a programer I really dislike using Node-RED for complicated calculations as you land up pretty quick into the limitations of "low-code" like version control (some is available in Node-RED but not that good), documentation, other best-practices.

However, for smaller stuff or connecting APIs this is absolutely great as it saves a lot of time around boilerplate stuff like package management, setting up a repo or Docker. We only do this smaller stuff also known as "customer specific configuration" and let our proper programs handle the rest.

Main target group is, like you said similarly, mechanical or industrial engineers with very limited IT knowledge, but still huge process expertise.