I can create a number of different use-case smart contracts and deploy them on the Ethereum network. I will not venture into advanced enterprise grade projects yet but i can do traditional contracts that serve a wide array of purposes such as: The average time is anywhere from a week to 2 months depending on the project, if the task is rudimentary it can be done quicker. Please note that smart contracts can always have flaws that are sometimes only discovered in retrospect and i can only do my best to perform security audits using industry standard tools and protocols but it is advised for every potential client to do their own due diligence before using the live version.