In large zip lock bag, combine soy sauce, tamarind, honey, ginger, garlic, chile sauce and sesame oil. Add in salt and pepper to taste. Shake all ingredients to combine. Add steaks, seal and let rest for a minimum of 4 hours, preferably overnight for maximum flavor
Light a grill on high. Drain meat, reserving the marinade
Add beef to grill, cook uncovered, turning and brushing with marinade until brown and the thickest part of the meat reads 130 degrees.
Once meat reaches desired temperature, transfer to cutting board and let sit for 5-10 minutes. Slice against the grain, serve and enjoy!