Does the level or rank of the professor writing the Letter of Recommendation (LOR) matter in UK/Germany for a Master's?

Yes, the rank of the professor writing your Letter of Recommendation (LOR) can matter, especially for Master's applications in Germany and the UK. Recommendations from senior faculty (associate or full professors) may carry extra weight due to their experience and standing.

However, what matters most is how well the professor knows you and how specific their letter is. A detailed, personalized LOR from a junior professor who can speak to your strengths is often more valuable than a generic one from a senior professor.

Choose recommenders who can provide strong, specific examples of your abilities and achievements.