Hello,
I have very long experience with writing bots using the old and new Betfair API. I have also created auto bet placers and odds scrappers for more than 5 bookmakers.
In summary I have very long experience in the online betting area and at the same time am a software developer with 10+ years of experience.
I am sure that I am the developer that you are searching for.
Just contact me and I will send you my CV so you will have clear idea about my experience during all these years.
Best wishes,
Vladimir