1. If you are in Jiangsu and Zhejiang, the recognition of middle and senior interpreters in Shanghai is quite high. However, at N2 level, it is still difficult to reach the level of intermediate Japanese interpretation in Shanghai. You can try training for about half a year (of course, you should practice hard). This certificate is useful in both English and Japanese, and its popularity in Shanghai is particularly high, and Japanese companies will pay more attention to it. The corresponding difficulty is not low, including written test (listening, reading, translation) and oral test (interpretation).

2. CATTI's interpretation certificate is relatively common in China, but it is quite difficult to achieve CATTI's second-level interpretation at N2 level. It is relatively useless to get only a lower level of three-level interpretation, and its popularity in Japanese enterprises is not so high. The training time is about one year, provided that you practice hard.

In a word, Jiangsu and Zhejiang regions aim at intermediate interpretation, while other regions aim at CATTI's secondary interpretation.

I have to mention that, of course, Japanese companies value JLPT's N 1 and JTEST's AB most, so if the goal is employment, it is recommended to test N 1 first. In fact, from the perspective of improving language ability, taking the Interpretation Certificate requires a good Japanese foundation, and the study and examination of N 1 can help you consolidate this foundation.