You can always hire an experienced programmer on a freelance project marketplace. Make sure you choose a programmer that is capable to do the job and do it on time (resume and customer feedack can will help you).

Many freelance marketplaces use "Escrow Payments" (you submit the bid amount to an escrow account only after you accept programmers's bid). If you're not satisfied with the result, you can simply request freelance marketplace staff to determine if the contract was met or not. Satisfaction is guaranteed!