All of this advice is spot on. I recommend not even mentioning a language in your resume, just explain what you worked on. If they ask if you can program in X,

All of this advice is spot on. I recommend not even mentioning a language in your resume, just explain what you worked on. If they ask if you can program in X, the answer is "of course I can program in X", because of course you can, languages are easy to learn. If they ask if you worked with technology Y, you say "yes" or if that's not true, you say that "I worked with similar technology Z, and I looked at Y and it seemed easy enough to learn in a few days". You want to position yourself as a person that will do anything that needs to be done, and if it requires learning something new, you'll learn that quickly, as you've already done many times before. Just don't lie, as it can easily poison the well. Some companies are looking for e.g. Rails developer, and they might reject you if you're not Rails developer, or they don't realize that you are. This is fine, these companies almost never pay $250k+ anyway. Companies that do are looking for people who can do anything they ask them to, not just some simple well-specified tasks.