Trackonomy Senior Engineer Java ML interview questions

Negative: * You not able to go back to the problem once you one the next section * You cannot look up syntax. No autocomplete. * You we 2 LC hard problems. * System Design section asks you upload diagrams to a solve generic API problem that address (scalability, caching, back pressure). As you are not suppose to open different tabs this was confusing. Anyways I run out time so * I did attempt this. * No feedback. * Multiple choice are ok. * Wasted 90 minutes of my time