Thanks a lot, that helps.
To be honst made a lot of stuff.
- real time trading system on orderbook level
- market research and visualisation
- timeseries modelling with different algorithms
- research different approaches, like reinforcement learning for trading
- database design and optimization. Currently the database has 42 billion entries
- web3 coding with solidity
- software architecture
- logging, don't lough. Huge part. Very hard to implement.
How did I beat the competition:
- was quicker than any one else.
- Also guess had more clever strategies, but it is hard to get into the details.