Hi, there.
I see, that you have a problem with "how put together all process, responsibilities from different services and relationships with all services".
I can help you, because I'm Business Analyst from Eastern Europe with a big experience in business & IT.
I created many business processes in different companies, which improve velocity and quality of work.
1) My clients was: Toyota, British American Tobacco, Philip Morris International Inc., JYSK, Nestle, IKEA, Glovo, Auchan.
2) I can describe your product in the necessary documentation format: (Business processes, SRS, FRS, BRD, user stories, use cases, etc).
3) My qualification include works on different position: Deputy Director of the IT department, Product Owner, Project Manager, Business Analyst, System Analyst, Technical Writer, QA, Web Developer.
4) Companies: I worked in international companies and the best companies in Ukraine with team from 3 employees to 28,000 employees.
I set up for you my minimal bid, because now I'm looking my first client on Freelancer.com. Before, I worked on another platforms. If you need more artifacts from me and you are interested in our collaboration, contact with me.