Duc Thanh Nguyen — Your contact person
Software developer with 25 years of Java experience. Based in Freising near Munich. I develop GPAA independently and personally support firms during rollout and process alignment.
How I work with tax firms
- Personal: Direct communication via email, phone or video — no call center, no ticket system
- Structured: Clear alignment before each change, documented intermediate steps
- Transparent: You see exactly what GPAA does — no black box, no automatic posting
- Long-term: Controlled pilot instead of mass onboarding. Collaboration, not feature pressure
Final professional review, account assignment and DATEV import approval remain with your firm.
Background
- 25 years of software development (Java, Spring Boot, Angular)
- Focus on structured digital processes for tax firms
- Location: Bahnhofstraße 11, 85375 Neufahrn bei Freising, Germany
- Contact: info@dtnsoft.de · +49 155 11512001
DTNSoft is my sole proprietorship for structured hospitality pre-accounting in the DATEV environment.
Does GPAA fit your firm?
Submit an anonymized statement or try the demo yourself. No sales call required.