If you're interested in helping New York City, you can volunteer your technical skills to solve meaningful problems there! It won't be the latest whiz-bang 5G Blockchain AI tech stack, but you'll have a shot at making a real difference. As cities further adopt open source approaches to technology infrastructure, these improvements will also benefit other cities.
https://www.usdigitalresponse.org/nycx-innovation-fellows/
Please DM me on Twitter (in my HN profile) if you have questions. I can help to answer or find someone who can.