Microsoft Office Add-in Development for German Businesses
We build custom Microsoft Office add-ins for companies across Germany, from Hamburg to Munich. Whether you need an Excel tool for your finance team or an Outlook add-in wired into your CRM, you work directly with the developers writing the code.
Our team sits in the UTC+5 timezone, which gives a 4 to 5 hour overlap with CET and CEST business hours. That window is enough for morning calls, same-day feedback, and a working rhythm that fits a German schedule.
We have delivered 250+ Office add-in projects over 5+ years as a verified Microsoft partner. That track record covers Excel, Word, Outlook, and PowerPoint builds for teams that depend on Microsoft 365 every day.
GDPR-Ready Add-ins
GDPR compliance is a requirement, not an afterthought, for German buyers. We build every add-in with data minimization in mind, so it only touches the data it actually needs to do its job.
Our add-ins collect no unnecessary information and add no hidden tracking. They run inside Microsoft 365 and work within the EU data boundary, so your data stays where Microsoft already keeps your tenant.
The result is a tool your data protection officer can sign off on, backed by clear documentation of what the add-in reads, writes, and stores.
Services we offer
Pick the surface your team works in, or combine several into one add-in.
Excel Add-in Development
Custom ribbons, task panes, and automation for Excel on Windows, Mac, and the web.
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Outlook Add-in Development
Mail add-ins that read context, write to your CRM, and run inside the new and classic Outlook.
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Word Add-in Development
Document generation, clause libraries, and content controls built with Office.js.
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PowerPoint Add-in Development
Slide automation, brand templates, and data-driven decks for consultants and sales teams.
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Microsoft Graph API Integration
Wire mail, calendar, Teams, and SharePoint data into your add-in through a single REST endpoint.
View detailsVerified Microsoft Partner
Listed on Microsoft Partner Center
250+ Projects Delivered
Across 15+ countries worldwide
GDPR-Aware Development
Built for EU compliance requirements
98% Client Satisfaction
Based on post-project feedback
Why German businesses choose us
- English-language communication with no language barrier when you hand us technical specifications.
- EU-aware development practices that respect data minimization and the Microsoft 365 data boundary.
- Fast delivery, with most projects shipping in 2 to 8 weeks.
- Fixed-scope projects available so you know the price and timeline before we start.
What Our German Clients Say
“Exceptional experience working with this developer. Their coding expertise greatly contributed to the project's success.”
Dirk
Office Add-in Development
Germany
“Delivered exactly what we agreed on. The tool is working perfectly fine.”
Christoph Kutz
Office Add-in Development
Germany
“An experienced and professional developer. Thank you for the good work!”
Webzollner
Office Add-in Development
Germany
Industries We've Served in Germany
From mid-sized manufacturers in Bavaria to fintech firms in Frankfurt, we have built Office add-ins across industries where data accuracy and compliance matter most.
Trusted by teams across Germany and beyond
Frequently asked questions
Do you work with clients based in Germany?
Are your Office add-ins GDPR compliant?
What timezone do you work in?
How much does an Office add-in project cost?
Can you publish our add-in to Microsoft AppSource?
Do you sign an NDA before starting a project?
Ready to talk about your project?
Book a free discovery call or send us a message.