Congratulations on waiting to start Social Security! Benefits do indeed increase the longer you wait.
Congratulations also on considering the benefits of returning to work. More and more retirees are finding the social as well as financial benefits of working past their retirement dates.
Working full or part time after retirement does not impact receiving your benefits after you have reached your "Full Retirement Age" as defined by the Social Security Administration.
To learn more about what your full retirement age is, visit Find Your Retirement Age.
If you are interested in learning more about how your benefits would be affected if you work and are taking benefits before your "Full Retirement Age," visit Work and Social Security.
**All above answers are provided as general information only. No warranty is made regarding the fitness or accuracy of the information provided in this answer. You should seek advice from a licensed CPA, attorney or CERTIFIED FINANCIAL PLANNER™ as to your unique financial situation.