Sounds like an issue with chair/desk height and/or monitor height. Anyways there are stretches and exercises that you can do that target that neck and shoulder

Sounds like an issue with chair/desk height and/or monitor height. Anyways there are stretches and exercises that you can do that target that neck and shoulder portions specifically. If you are otherwise healthty, doing those exercises 15 to 30 minutes per day will have you pain gone in a week. And if you get a feeling for which muscles they are targeting you might be able to find variations of those stretches that you can do inbetween while sitring at your computer.