Fumbling Toward Culinary Talent: Sausage and Shrimp Soup

I cobbled together this soup today from an assortment of foodstuffs I had in the freezer and about the house. It's pretty damn tasty. 

Ingredients
Olive oil
1 whole yellow onion, chopped finely
2 stalks of celery, chopped finely
3 medium size carrots, chopped into half-moon  slices
2 tablespoons of minced garlic
4 tablespoons of spicy harissa
1 ring of turkey kielbasa, chopped into half-moon slices
3 quarts of reduced sodium chicken stock
2 cans of canellini beans, drained and rinsed
1 package of uncooked frozen shrimp, thawed and shelled
Salt and pepper to taste

Process
Coat a large Dutch oven in olive and heat on medium-high. Add the onion, celery, and carrots, add some salt and pepper, and cook until sweated down substantially. Add in the garlic and cook for approximately a minute. Then add in the harissa and cook for approximately five minutes Then put in the smoked kielbasa and cook until some browning happens.

Add the stock and beans, heat it to high until boiling, and then reduce to medium. Cover with the lid cracked and simmer for 15 minutes. Add the shrimp and cook for five minutes. Salt and pepper to taste.