Blockchain Programmer needed

i need someone who is individual Block-chain programmer & have strong knowledge in crypto. i will share some opensource exchange github source code and he/she will implement all thing like i want. you must need to know how build a decentralize exchange, smart coins, witnesss & smart contracts development Skills. if you know the all process i believe you can implement on that opensource too. No time waster, no Sales Person, No slow worker bid here, i need to done it fast.