Altsystem migration: success factors and best practices for a smooth transition
In today's rapidly changing digital landscape, many companies face the challenge of modernizing outdated IT systems. The Altsystem migration is a decision...
IT & software from Germany
Software, apps and AI – from one technology partner
We deliver digital products and integrations when processes stall, interfaces break or legacy cannot scale. For bespoke software for mid-sized companies with clear scope, use the dedicated service page; this home page is the entry to our full services portfolio and next steps.
Core commercial services
30 min strategy call – 100% free & non-binding
Made in Germany
GDPR compliant
14+ years experience
Our promises
What you get with Groenewold IT Solutions
Software Made in Germany
All software is built by full-time employees in Germany – no offshoring, no freelancer chains. Our team in Leer (Lower Saxony) is your dedicated point of contact from first requirements to production – GDPR-compliant and in your time zone.
You own the source code
You receive the complete source code – once paid, it belongs to you. No vendor lock-in, no hidden licensing traps, full long-term control over your custom software.
What we deliver for international clients
Most engagements centre on five primary commercial offers: custom software development, AI integration and consulting, legacy modernization, API development and integration, and automation. Together they cover how mid-sized and enterprise teams replace manual work, connect systems and stay compliant—without vendor lock-in. Secondary topics—web and mobile products, deep-dive articles by theme—are linked below when they support these pillars.
Also available: Web & mobile development for product UX and channels that sit alongside your core systems; AI knowledge base to make internal expertise searchable next to integrations; software development articles, app development, ERP & CRM, and API & integration on the blog for ongoing learning.
Schedule a call to map your priorities—Made in Germany, EU-focused data handling, one accountable partner from discovery to operations.
Commercial next steps
Digital solutions from one partner
Groenewold IT Solutions supports organizations with web app development, mobile apps, AI and legacy modernisation. We focus on measurable results, clear communication, and a dedicated contact from consulting through to operation – engineered in Leer, East Frisia.
Whether you need APIs, AI integration, or legacy modernisation: we don't deliver random off-the-shelf products but align architecture and delivery with your processes and budget. Made in Germany, with your data in the EU.
For a focused read on individual software development for the mid-market with emphasis on tailoring and integration, follow the dedicated service page – this home page remains your entry to the full services portfolio, our solution clusters and industry pages.
Solution patterns and industries at a glance
Beyond individual services, we group typical project triggers in solution pages and map delivery experience by industry – from manufacturing and healthcare to the public sector.
Featured in
Our IT solutions – and how we can help you
Our Team – Sales and Project Management
Dipl. Inf. Björn Groenewold
CEO
Expert in business and IT strategy. Over 15 years of experience.
Dipl. Inf. (FH) Thorsten Frieling
Project Manager
Experienced project manager. Focus on delivery and customer satisfaction.
Book an appointment directly
No long back-and-forth. On the scheduling page, simply pick the next free slot – the first conversation is free and non-binding.
5.0 on Google · 250+ successful projects · Made in Germany
Björn Groenewold – Managing Director
Our Clients
We work with companies from many sectors. We build solutions that fit their needs.
BRUNS DATA SCIENCE
Project references
Selected case studies from our project work
Concrete examples of web apps, mobile, AI and legacy modernization – with measurable outcomes and detailed case studies.
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Book a free consultation
Talk directly with Björn Groenewold about your project – software, apps, AI or legacy modernisation. The first call is free and non-binding.
Björn Groenewold – Managing Director
Our Clients from Public Sector and Education
We deliver secure, reliable solutions for the public sector and education.
Our Services
Software development, web and app, AI, consulting – all from one partner.
View Our Services →Our Solutions
Typical project triggers from MVP and ERP to customer portals – with scope and entry points.
Browse solution clusters →Industry Solutions
Sector-specific software for manufacturing, healthcare, retail, logistics and the public sector.
View industries →Our References
View successful projects we have implemented for our clients.
View Our References →About Us
Our company, team, values and how we work.
About Groenewold IT Solutions →Our Technologies
Discover the modern technologies and tools we work with.
View Our Technologies →Our Blog
Read current articles and insights on IT topics and trends in software development.
Read Our Blog →Contact
Get in touch with us and let's talk about your project.
Get in Touch →Pick the right entry point
Different pages serve different decision phases: commissioning, orientation, option selection or trust validation.
Commission software development
Service scope, delivery model and project fit for active buying intent.
Review MVP and solution clustersTypical project triggers with scope, architecture and delivery entry points.
Industry solutions for manufacturingSector entry points with process, integration and operations focus.
Topics for orientationCluster-based background before committing to budget and delivery setup.
Compare technologies and delivery optionsDecision support for architecture, sourcing and make-or-buy trade-offs.
Web-app references from real projectsProject evidence to validate delivery quality before you mandate work.
Book a free consultation
Talk directly with Björn Groenewold about your project – software, apps, AI or legacy modernisation. The first call is free and non-binding.
Björn Groenewold – Managing Director
From our blog
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Jump to high-intent cost calculators
Fast access to the most requested budgeting scenarios directly from the homepage.
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