I love building web apps and so far I've helped 5 startups launch their MVP in last 7 years. I can talk about Ruby, Rails and Personal finance non stop.
Things I'm learning/building now:
* DApps and smart contracts with solidity, truffle and web3js
* Slack bot
This is what I'm good at:
* Web application development(Frontend + Backend),
* Building apis REST, Graphql
* Deployment on cloud services (AWS, Google cloud, Heroku, Azure)