It was a hackathon for Java developers sponsored by Sovcombank and Skolkovo. There were ~600 participants from Russia.
The first round was a test with 101 questions related to Java and Software Engineering (2 hours).
In the second round, I was asked to write a web service, implement API, integrate this service with two external services using different protocols (SOAP+REST JSON), and implement logic with correct timeout handling, parallel processing and so on (4 hours).
The solution is a Docker image that should be pushed to the organizer's repository and automatically tested by their test system for correctness and ability to handle high load.
Got 1st place in the Grid Dynamics Java contest at Joker 2018 conference.
My solution was one of a few Java solutions and used Java+C via JNI.
I got 9th place in the first round and 32st place in the final.
Got different place in different competitions, but don't remember them all :)
Got 2nd place in the Software Engineers competition organized by the Computer press magazine.
At the age of 17 y.o., developed, advertised, and sold popular applications of my own via the Internet.
Got first places in Computer science & Chemistry regional school olympiads.
Got high places in Chemistry all-Russian olympiads.
Got free education in Moscow Chemical lyceum as a talented student.
Entered the university based on Math olympiad results.
Was receiving 2 scholarships as a talented student.
Was receiving a scholarship as a talented painter.