This user is accepting money from Vipul Naik to edit Wikipedia. The payment is by mutual agreement but not all articles are proposed by Vipul.
My first article: https://en.wikipedia.org/wiki/Academic_Training
Second: https://en.wikipedia.org/wiki/User:Sergie_Marienhof/ffq
For a list of completed articles or edits for which payment has been finalized, see here or here.
For a list of articles on which this user is currently working and may be paid upon completion, see the articles marked as reserved for Sergey here. This list may be empty at a given time as the person may not currently be working on an article.