Hi,
This is a non generic bid. So don't worry.
Now coming to the details you have specified here, I'm assuming that each time you say 'Optimization', you mean that you ALREADY HAVE a website or mobile app which you want to improve on.
I've been working on the Google Maps API in javascript for the past few months now, and I'm learning more as I go. By no means am I a full fledged expert web developer, but I can do optimizations for your websites and mobile apps quite easily.
I communicate quite well and English is my native language.
I'm interested in working for you, if you're work has a good amount of coding in it, and not some marketing job.
Regards,
Adil Haris