Boil a pot of water and cook the soba noodles according to package directions, then drain and set aside.
In a large skillet over medium-high heat, brown the ground pork until fully cooked, breaking it into small crumbles.
Add the minced garlic, grated ginger, and chopped baby bok choy to the skillet, sautéing until the greens are wilted.
In a small bowl, whisk together the tahini, tamari, rice vinegar, and chili oil to create a smooth sauce.
Reduce the heat to low, add the cooked noodles to the skillet, and pour the sauce over the mixture.
Toss everything together until the noodles are well-coated and creamy, then season with sea salt and black pepper.