Custom Software Development
Is your software holding you back? We change that. Manual work, old systems, broken links between tools? We build software that fixes that – Made in Germany.
Core commercial services
30 min strategy call – 100% free & non-binding
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
Groenewold IT Solutions has been building custom software for the German mid-market for years – from web and mobile apps to modernising legacy systems. We focus on measurable results, clear communication, and a dedicated contact from consulting through to operation.
Whether you need APIs, AI integration, or legacy modernisation: we don’t deliver off-the-shelf products but tailor every solution to your processes and budget. Made in Germany, with your data in the EU.
Featured in
CEO
Expert in business and IT strategy. Over 15 years of experience.
Project Manager
Experienced project manager. Focus on delivery and customer satisfaction.
Software development, web and app, AI, consulting – all from one partner.
View Our Services →View successful projects we have implemented for our clients.
View Our References →Our company, team, values and how we work.
About Groenewold IT →Discover the modern technologies and tools we work with.
View Our Technologies →Read current articles and insights on IT topics and trends in software development.
Read Our Blog →Get in touch with us and let's talk about your project.
Get in Touch →
We work with companies from many sectors. We build solutions that fit their needs.
We deliver secure, reliable solutions for the public sector and education.
Fast access to the most requested budgeting scenarios directly from the homepage.
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Sign up for the newsletterFrequently Asked Questions
Costs vary depending on scope and complexity. A typical MVP starts at around €20,000, while complex enterprise solutions are correspondingly higher. We provide a transparent quote after a free initial consultation.
Yes, for clearly defined scope. For agile projects with evolving requirements, we work on a time and materials basis with transparent time tracking. Hybrid models (fixed price for base features, T&M for extensions) are often ideal.
No. We clearly define what is included in the quote and what is not. Change requests are discussed beforehand and charged transparently. No surprises on the invoice.
Cost estimate for your project?
In a short conversation, we give you a realistic assessment.
Björn Groenewold – CEO
An MVP is often achievable in 2–4 months. More complex systems with integrations can take 6–12 months. Through agile methods, we regularly deliver usable intermediate results – not just at the end.
After an initial meeting, we create a concept. Then we develop iteratively in 2-week sprints with regular demos. You always have insight and can provide early feedback. Transparency and communication are important to us.
In many cases, yes. Small projects or extensions can often start within a few days. For larger projects, we plan 1-2 weeks lead time for concept and team setup.
Yes, we develop exclusively in Germany. Our team is based in Leer (East Frisia), and we do not work with offshore teams. This guarantees data protection, short communication paths, and the highest quality.
We use various technologies appropriate for the project: React, Next.js, Laravel, .NET, Delphi, Flutter, Python, and more. No dogmas – we choose the best tool for the task.
View our technologies →Through code reviews, automated tests (unit, integration, E2E), CI/CD pipelines, and security checks. Quality is part of every sprint. Plus clean documentation for long-term maintainability.
Questions about our approach?
We'd be happy to explain how we would implement your project.
Thorsten Frieling – Project Management
Yes, we offer long-term maintenance contracts with SLAs, regular updates, and emergency support. Many of our clients have been with us for over 10 years. Long-term partnerships are our model.
Yes, after a code audit. We take over third-party software, stabilize it, document it, and continue development. We also get failed projects from other providers back on track.
Yes. You receive complete source code and documentation. We hand over cleanly and train your team if needed. You're not dependent on us – but many clients happily stay.
Ready for your project?
Let's talk about your requirements.
Björn Groenewold – CEO
From our blog
The Altsystem migration is a necessary step for many companies to remain competitive and not lose the connection technologically. Outdated systems are often expensive in...
In today's fast-paced digital landscape, many companies face the challenge of modernizing outdated IT systems. These so-called old systems are often the backbone of the...
The migration of software and related data is a critical process that is essential for modernising IT systems. Whether it's about replacing outdated applications...
Topics: IoT · AI & Chatbots · Software rescue
