Rinse and drain black beans and sweet corn. Chop cherry tomatoes, red onion, bell peppers, and cilantro.

In a large mixing bowl, combine black beans, corn, cherry tomatoes, red onion, bell peppers, cilantro, and jalapeño if using.

In a small bowl, whisk together lime juice, olive oil, salt, pepper, and any optional spices.

Drizzle the dressing over the vegetable mixture; stir gently to ensure everything is evenly coated.

Cover and chill in the refrigerator for at least one hour before serving.