Combine the ingredients for the marinade. Add the beef and toss to coat. Cover and let sit at room temperature for one hour.
Pickle the carrots and daikon. Combine rice vinegar - salt in a small sauce pot. Bring to a boil over medium-high heat, stirring until the sugar dissolves. Remove from heat and pour over the carrots and daikon. Let cool.
Mix together the sriracha and mayonnaise in a small bowl until combined. Add more sriracha if desired.
Preheat grill to medium-high. Grill the marinated beef for 6-8 minutes or until cooked through, flipping halfway through. Transfer the steak to a plate and tent with foil. Let sit for 10 minutes. Slice the steak.
Assemble the sandwiches. Spread the sriracha aioli on both sides of the bread. Top the bottom half with 4 ounces steak, pickled carrots and daikon, sliced jalapeno, cilantro, fried egg, and the remaining bread. Serve.