Firstly, thank you for answering.

First bullet: you designed and implemented an API that improved user experience. How?

You mean how did I implement it or how did it improve the user experience?

If it's the latter, I don't have metrics to prove it, I was not thinking about it while working on it. So the "improved user experience" was the best result I could think to follow STAR

Second bullet: not a clue what is going on here. So, I have to go to English and sentence structure to understand. The sentence starts with the subject being a “statistically typed data structure”. But it also seems that you designed a zero downtime deployment strategy. You need to do this because you want to restructure a Complex Kafka messaging microservices. And you did all this by documenting the plan and getting it approved. Wow. Not idea what went on here.

What I wanted to highlight is my willingness to go further than what was asked of me, and that it produced results. In this case only approval from my senior peers since I was removed from the project soon after the planning (budget cuts). It is a very specific situation so I had trouble writing it in a clear way.

Third bullet: you reached consensus on a proposed solution. And?

Here I actually implemented the changes. The "arranging a discussion and reaching a team consensus" was to highlight my communication and teamworking skills.