In a medium mixing bowl, combine the ground pork, minced shrimp, shredded cabbage, shredded carrots, minced garlic, and grated ginger.
Add the tamari, sea salt, and black pepper to the bowl and mix thoroughly until the proteins and vegetables are evenly distributed.
Lay one spring roll wrapper on a clean, dry surface in a diamond orientation with a corner pointing toward you.
Place approximately 2 tablespoons of the filling in a horizontal log shape across the center of the wrapper.
Fold the bottom corner over the filling, tuck in the left and right side corners tightly, and roll upward toward the top corner.
Moisten the top edge with a small dab of water to seal the roll completely. Repeat with the remaining wrappers and filling.
Lightly brush the exterior of each lumpia roll with avocado oil to ensure a golden finish.
Arrange the rolls in a single layer in an air fryer basket and cook at 375°F (190°C) for 12-15 minutes, flipping halfway through, until they are deeply golden and crispy.
Remove from the air fryer and let rest for 2 minutes before serving hot.