Don't be afraid of heavier weights and some lower reps! One of the most overlooked fat burners is good old heavy compound lifts. Deads, squats, bench, power cleans, etc. these moves target you biggest (and many) muscles. Going heavier (say in the 6-10rep range) will help shock your body as well.
The key here is that building muscle will also allow you to burn fat (even when you're not lifting!) more muscle means higher metabolism and higher metabolism means more fat burning.
And don't neglect your diet! IMO this is the number 1 factor in any weight loss program. Calculate your tdee, check what you're eating against some of the common bb foods, post your diet in the nutrition section here for critique and have at it! Best of luck man