Reasons for not considering overseas contractors come down to friction: language, culture, timezones, payments and money, taxes, legal issues, etc. Small things can combine to make an overseas contractor too much hassle to work with. Cultural norms and language differences can scare off customers not experienced with overseas contractors.<p>Reasons for considering: significant savings in cost, unable to find, recruit, hire, and keep local talent.<p>Open source contributions mean next to nothing in most professional contexts. Unless you have your name all over a project everyone has heard of, don't expect much interest in that work. You have to communicate ability to solve business problems and add value; contributing to open source projects generally doesn't do that.<p>Referrals, word of mouth, reputation remain the best way to find good contract work (or f/t jobs). Cultivate a professional network and a real track record before putting lots of energy into a "tech stack" or open source contributions.