Solidity Contract Project

Goji Crypto (“Goji”) is a Software as a Service (SaaS) platform that aims to allow businesses to leverage the power of the blockchain with ease. With a single, easy-to-use dashboard, the Goji platform will provide ease for businesses when it comes to receiving online payments (consumer to business), as well as sending and receiving funds to other businesses or institutions (business to business).

I'm looking for a smart contract sample to create robustly. What I
want from the contract is to allow people to stake ERC20 tokens and in doing so get the same ERC20 tokens.