Dear Mr. Kronjäger, 
we would like to take this opportunity to congratulate you on passing your final examination as a mechatronics technician!
We are very proud of your achievement and the hard work you have put in over the last few years to reach this important milestone.
We very much look forward to having you continue to be a valuable member of our team and are certain that you will continue to contribute to our success in the future.
With your talent and motivation, you are a great asset to our company.
We will support you in achieving your professional goals and further strengthening your skills.