It started with someone learning German.
myDeutschFlow is a project by Đinh Huy Cự, a software developer teaching himself German to find work in Germany, and building exactly the tool he needed.
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Chapter 01
The gap
Plenty of study material. Almost nowhere to practise a job interview for your field.
Like many others, I am not learning German to pass a test for fun. I am learning it to live, work and get through interviews in German.
Along the way I noticed that Vietnamese learners of German have plenty of material, but almost nowhere to practise speaking and job interviews for their field safely, with expert feedback, and with an understanding of how German employers hire.
“Every feature comes from a real need, not a guess.”
Đinh Huy Cự
Chapter 02
Building it
So I built the tool I needed.
An AI plays a German employer, asks about your actual job and points out what to fix after every answer. Add a day-by-day A1–B1 path and mock exams in the Goethe and telc format. Every job has an interviewer from that line of work.
Real screen · A learner’s roadmap tree
Chapter 03
Step by step
One person, one step at a time.
12 April 2026
The first line of code
The day I decided to build myDeutschFlow myself and wrote the first lines of code.
31 May 2026
On your phone
Started building the iOS and Android app, so you can practise speaking anywhere.
18 October 2026
For every job, every country
Opened up to learners from every country, to German language schools and to employers in Germany.
There is no team behind this. From the first line of code until today, I have built myDeutschFlow on my own, over more than 1,600 commits.
Chapter 04
Growing
It began with Vietnamese learners. It is for everyone preparing to move to Germany.
That gap is not only a Vietnamese one. Anyone moving to Germany for work or vocational training needs to practise interviews for their field, in German. So myDeutschFlow serves three groups, in every job and every country.
Learners
Practise job interviews for your field, prepare for speaking exams, build a foundation up to B1.
German language schools
Assign speaking tasks to a whole class, AI drafts the marking, teachers confirm the grades for writing.
Employers in GermanyComing soon
See how a candidate speaks German before you hire.
What I care about
From someone on the same path
I am learning German and preparing for interviews myself. Every feature comes from a real need, not a guess.
Honesty
No empty promises. What works is described as working; what is not ready yet is clearly marked as in progress.
Listening
There is one person behind this, so I read and answer every email. Your feedback directly shapes the product.
If you are on your way to Germany too, I hope myDeutschFlow helps you the way it helps me.
Đinh Huy Cự · Write to me: [email protected]