I am Franz Korbjuhn, an independent IT consultant based in Hamburg. I help businesses set up Microsoft 365, manage their devices and networks, and look after their day-to-day IT. On site in Hamburg and remotely.
Franz Korbjuhn
IT consultant and IT service provider
Sophos MSP Partner
Your IT has grown over the years. Nobody has fully documented which devices, accounts and contracts belong to it.
I record your systems and how they depend on each other. Then we decide what to document, improve or replace.
Microsoft 365 is in use, but file storage, permissions and devices were set up one at a time.
I review the configuration and align accounts, devices and collaboration, including unused licences and security features.
You want to know how well your business is prepared for attacks and data loss.
I review your existing protection and show which measures should come first, each with a reason and an effort estimate.
Dropped connections or slow Wi-Fi get in the way of work.
I measure Wi-Fi coverage and check the network, its configuration and load. Then we fix the actual cause.
A change of IT provider or an office move is coming up, and work needs to carry on.
I plan the handover, track down missing documentation and coordinate the switch. Any necessary downtime is agreed with you in advance.
Your IT team needs extra capacity or experience for a specific topic.
I take on agreed tasks in coordination with your team and document changes for day-to-day operation afterwards.
Mobile and landline contracts run with different providers. Terms and actual needs are hard to keep track of.
I put contracts, costs and notice periods together and check which tariffs and lines you still need.
Data is entered more than once, and routine tasks keep taking up time.
We look at the workflow together. I check what can be automated and where AI genuinely helps.
You do not need to fit your request into one of these areas. Just tell me what is on your mind.
I take on individual projects and the ongoing support of your IT. If you have an in-house IT team, I help with agreed tasks or specialist topics.
I set up Microsoft 365, migrate mailboxes and files, and look after licences, access permissions and devices. For Windows, Macs or both.
I review how accounts, devices, network and backups are protected. If you wish, I then work through the resulting action plan with you.
I plan and look after networks, Wi-Fi, firewalls, servers and backups. Including office moves, or when existing equipment needs replacing.
I handle support, updates, monitoring and backup checks. We agree the scope and response times to suit your business.
I connect your systems and automate recurring tasks. With AI, we first clarify the benefit, the data access involved and what your team needs.
I plan and manage migrations, modernisation and changes of provider: the implementation, coordination with everyone involved and the handover to your team.
I set up cloud phone systems with 3CX, Microsoft Teams or Telekom Cloud PBX and look after mobile, landline and fibre contracts as a partner of Telekom, Vodafone and Telefónica.
We talk about what you need and which systems you already use.
I suggest the next steps and explain the effort and priorities. Not everything needs replacing.
I carry out the agreed work myself, schedule it with you and document the changes.
If you wish, I then take on maintenance and support. We put tasks and response times in writing.
Ongoing project: since September 2026 I have been supporting a Hamburg engineering firm with around 130 staff and 160 devices on a Microsoft 365 security concept that is being rolled out step by step.
Two sites, ten workstations and several providers involved: I supported the IT changeover at a specialist medical practice in Hamburg and have looked after it ever since.
A model agency in Hamburg needed a new network for an office move on a fixed date, without a handover from its previous provider. I recorded the existing setup and prepared the changeover.
Around 500 checks in twelve areas: what a Microsoft 365 audit covers, which findings come up almost every time, what it does for your licences and how the results become an action plan.
Read article→
Business Basic and Business Standard have cost more since 1 July 2026, Business Premium has not. Why the new price only applies from your renewal and how I compare Business Standard and Business Premium using licence costs as of October 2026.
Read article→
Why I usually add Hornetsecurity for email protection when clients use Business Standard, how the switch works, and when I recommend Business Premium instead.
Read article→Thank you for the excellent collaboration, we look forward to more projects together.
Thanks to the new internal wiki Mr Korbjuhn built for us, colleagues now usually find the answer to questions about standard processes themselves, which noticeably takes the load off the IT department.
It is hard to believe how much time you save once rudimentary Excel skills are developed a bit further. There is plenty to learn, of course, but it is fun and it really pays off.
The training was great! You simply learn far more effectively when it is explained to you personally and that clearly. I am happy to recommend Mr Korbjuhn.
I am Franz Korbjuhn, an IT consultant and IT service provider in Hamburg. I plan solutions, implement them myself and have supported many clients for years. So I know both the technology and the everyday work it has to support.
You get a recommendation with its effort and benefit explained. When we work alongside your internal IT, we agree tasks and responsibilities together.
Have a different question? Just write to me.
Both: on site in Hamburg and remotely. One non-profit with a distributed team, for example, I support entirely remotely.
Small and medium-sized companies, from a small law firm to businesses with more than 150 staff: agencies, law firms, medical practices, planning offices, trades businesses and non-profits. Typically they have 10 to 50 workstations.
Nothing. It is free and without obligation. We talk about what you need and work out sensible next steps.
Usually by the hour or as a monthly flat fee, depending on what we agree. A block of hours is the exception. The record of work done is always there to check.
Yes. I take on agreed tasks when your team lacks time or experience for a topic. Your team stays involved, and documentation and access stay with you.
Tell me what is coming up or where things are getting stuck. In a free introductory call we work out how I can help and what makes sense next.
