We were a small startup with only 5-6 developers. I had to design the UI and develop most of the Android frontend, It was quite an easy and fun job for me because I don't get to see people rant about the design that needed to be implemented so, usually I design something that can be easily implemented.
We got 2 projects with a tight deadline and I took care of both project's design part and after completing the design I took the entire frontend of one project and rest of em started working with the other one. Usually we were a strong team and was able to deliver things real quick because we were expert in our intrested fields, I had a fast start in my project where the other project lagged a lot because of the desifn which was hard to implement by them, and the frontend was bo where near to get completed by the deadline and I couldn't help them out because it was all messed up shit handling both projects together.

Finally we were in a situation where none of our project are ready and the deadline was about to hit within a week, so we halted the other project and asked them to join me to complete the project am Working on, I had built most of the Android part and these fellows had a hard time figuring out stuff I made up (yeah, documentation was shit while you go agile), and finally things messed up and I had to work 2 continuous day and night without any sleep just to get the app ready 10 minutes before the official proto presentation.

The best part is I couldn't even get up from my chair and had a headache, fainted instantly when I took a few steps, but the product launch went good.

We fucked uo the code and both the projects just because we weren't available for each other considering the size of the team. Anyway we completed the project but It was a huge failure for us being first time to manage a startup.

Learned a lot of lessons,
Always make a team with people who are good at each of the aspect of development and never divide it to get shit done faster.