Dansou Joshi ga, Konkatsu Hajimemashita

Hanazawa Moe grew up tall and tomboyish, and was even mocked for "crossdressing" the one time she wore more feminine clothes, which left her with some emotional baggage and a penchant for playing the man. Now Moe is the most popular waiter at a crossdressing cafe, where she dresses up as a guy to welcome lady customers. Thinking it was a dream job that let her use her unique talents, she buried herself in her work, until... Before she knew it, she'd reached "that age" - all her friends are getting married, having kids, and steadily moving forward in life. Suddenly, a voice inside her starts asking, "Do I want to carry on this way forever...?" -- Match-making apps, blind date parties and more... The chronicle of a girl well below the curve on romantic know-how going all out to find a husband!

(Source: MangaPlaza)

Note: Digital version has five volumes.