Dear Sir or Madam:
I am a programmer with extensive and wide experience in software systems, integrations and the requirements you posted. I do not know exactly requirements, but if you message me with za list of cuntions you need, I could fix price.
Thank you,
Adrian
Background
Full services: programming, PM, technical translation/writing.
Software architecture and engineering.
Personalized service, full back-end and. front-end programming.