The people behind Tree IT Systems.
Tree IT Systems is an IT and consulting business with a web practice inside it. Maximilian owns infrastructure, security and advice; Sarah leads the design. We work with small businesses, associations and private clients.
Maximilian and Sarah.
Maximilian Jung
Owner. IT infrastructure, security and consulting.
Maximilian owns your IT infrastructure: networks, user and access management, cloud services and hosting, through to building what Sarah designs. Every project begins with a proper survey of your systems, in which effort, benefit and cost are weighed against each other openly. If what you already have fits, it stays — that gives you certainty before the first quotation rather than after it.
In delivery he handles clean integration, structured documentation and dependable personal support, from go-live and for as long as it runs.
Sarah Jung
Design, brand and content.
Sarah leads the design: the look of a site, its imagery and the words that go with it — developed on your real content rather than on filler text.
Where a brand already exists she works inside it; where it does not, she helps settle the basics — colours, type, how the logo is used — and makes sure the website, a newsletter and anything printed look like the same organisation.
What she needs from you is manageable: your content, a sense of who you want to reach, and someone who gives feedback. How a web project runs with her is set out in full on the Web page.
When your data is worth protecting.
Once a business holds customer records, personnel files or payroll, IT stops being a convenience. What matters then is who may reach what, where that data sits, and whether either can be demonstrated if someone asks. That is where our work starts, and it starts not with the technology but with the question of what in your organisation is actually worth protecting.
A network worth the name is therefore not a router with Wi-Fi attached. Servers, workstations, guests and devices that only need the internet belong apart from one another; firewall rules are written rather than inherited; remote access for the people who work away from the office is secured and documented. With it comes a backup plan that does not merely exist but that somebody has restored from at least once — because a backup nobody has tested is an assumption.
Just as important is the question of who may do what, and who may no longer. For mail, for databases holding customer data and for payroll, role and permission models are built to fit your organisation rather than the product: multi-factor authentication, orderly handovers when people join and leave, administrator accounts that are named and traceable. None of it is spectacular, and it is the difference between an incident and a problem.
Data protection is not an appendix to that work but its written record. Records of processing activities, technical and organisational measures, processor agreements and deletion schedules are produced so they can be put in front of someone when it matters — not so that a box is ticked somewhere.
For you it comes to this: we look at what you have, name the gaps in order of their risk, and tell you what closing them costs — and what not closing them costs. You get an assessment, not a product list.
The work that shows only when it is missing.
A network that is properly separated. A backup somebody has restored from. An account that was closed the day its owner left. None of it is visible until it is absent.
Where the experience comes from.
Maximilian has been self-employed since 2012, looking after businesses, associations and private clients in that time: environments small enough that every decision shows immediately and no mistake can hide behind a department. Alongside that he leads projects in an internationally operating reinsurance group — heterogeneous system landscapes, several countries, a regulated industry in which documentation, access control and traceability are not recommendations but conditions.
The combination is the actual point. The group work supplies the standard: how an environment ought to be documented, how permissions are justified, what a migration needs by way of preparation. Self-employment supplies the judgement. A firm of twelve people does not need the same procedures as one of twelve thousand, but it does need the same clarity about who does what and why. We carry the one across to the other without selling you an apparatus you will not be able to run.
Who does what.
The division is clean, and that is deliberate. Maximilian owns everything technical: the survey and the advice, network and servers, user and access management, Microsoft 365 and cloud, hosting, domains, data protection and documentation — and the build of every website in Joomla. Sarah owns the design: look, typography, colour, imagery and the words of a website, plus the basics of a brand where there is not one yet. She runs the design rounds with you.
The handover sits at exactly one point: the approved design goes from Sarah to Maximilian. What goes live after that is what you approved, and the person who built it is the person who answers when you ring six months later. There is no third party in between who might have understood it differently.
It started with computers and websites.
Maximilian started out on his own in 2012, helping people and small businesses in and around Munich with their computers and their websites. Those two areas are still the heart of Tree IT Systems. Hosting, domains and the services behind a website joined over time, and since Sarah's design work and Maximilian's technical work have stood side by side, a site can be drawn up and built by the same two people.
A few milestones along the way.
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2012
The beginning
Maximilian started out on his own, helping people and small businesses around Munich with their computers and their websites.
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May 2018
Tree IT Systems
The business took its present name and was entered in the commercial register in Eching. One name for the IT work and the web work together.
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June 2018
Our own hosting platform
The first hosting platform went live, so customers' websites could live with the people who build and look after them.
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2018
Domains added
Domain registration and management joined the service, which completed the chain: the address, the hosting and the website from one place.
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2022
Into Munich
The office moved from Eching into Munich, closer to the customers the business had grown up with.
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2025
To Thuringia
A move to Altremda, near Rudolstadt, and with it a new register court in Jena. The Munich customers stayed — most of the work was already remote.
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Today
Rooted in Thuringia
Based in Altremda, working across the Saalfeld-Rudolstadt district and wider Thuringia, and remotely with long-standing customers in the Munich area.
Local when it helps. Remote when it works.
From Altremda, near Rudolstadt, we work with customers across the Saalfeld-Rudolstadt district and wider Thuringia; on-site technical support is available by arrangement. Cloud support, website projects and many everyday IT tasks can be handled remotely in any case, which is why we also keep working with customers in the Munich area and further afield.
Let's get to know each other.
Tell us what you are planning, or where you need a hand.
The first conversation is free and without obligation — by phone, video or on site.