The problem Lenders.finance solves

For really impressive defi yields, a huge amount of money is required to try out different yield farming strategies. The protocol provides a means, for people with limited funds to come, and take out huge chunks of money compared to their investment in the protocol. For eg., you can take around 1000 Dai for 20$ fees and do DeFi for a given amount of time.

Challenges I ran into

1. Truffle version was buggy resulting in a bad-performing deployed contract with solc 0.8.2
2. Designing the architecture, separating the protocol into data provider, interest calculator, wrapper token etc.
3. Protocol design / improvements
4. WadMath and ChainLink integration.