From Wikipedia Internet Research Agency article, current to Nov. 2017:

“According to journalists’ investigations, the office in Olgino was named as Internet Research Agency Ltd. (Russian: ООО «Агентство интернет-исследований»).[3][8] The company was founded in the summer of 2013.[6]

Journalists also point out that Alexey Soskovets, who had participated in Russian youth political community, was directly connected to the office in Olgino. His company, North-Western Service Agency, won 17 or 18 (according to different sources) contracts for organizing celebrations, forums and sport competitions for authorities of Saint Petersburg. The agency was the only participant in half of those bids. In the summer of 2013 the agency won a tender for providing freight services for participants of Seliger camp.[3][9]”

… “Novaya Gazeta newspaper reported that, according to Alexey Soskovets, head of the office in Olgino, North-Western Service Agency was hiring employees for similar projects in Moscow and other cities in 2013.[3]”

Novaya Gazeta September 2013 article link. (Auto-translated Google Chrome extension)

“We meet with a friend Alexei Soskovets – a native of the youth polittusovki. In “friends” VKontakte he has a lot of activists of the movement “Nashi”, “Young Guard of United Russia” and employees of the Committee for Youth Policy of St. Petersburg, including the former head of the committee Nikita Alexandrov.

In 2013, Soskovets’s “North-West Service Agency” won 18 contests for the organization of holidays, forums and sports events for St. Petersburg authorities. In half of the competitions the agency participated alone. In the summer of 2013, the contest for transport services for participants of the camp “Seliger” won.”

Wish I had a human-translation of this, because the article seems quite relevant and interesting:

“While filling in the questionnaires, Alexey described our functionality. According to him, now they are engaged in increasing the index of certain articles. “There are different articles – social, business, political and so on. We act on the principle of “Yandex-market”, – he began. – “Yandex-Market” is a huge online store that says where it is better to buy. Under each product there is a comment of people who say that this is an excellent phone, this is a bad phone. Alas, the realities of life are such that not always people want to write the first comments. We need to increase the attendance of the site. This can be done by robots, but robots do their work mechanically, and sometimes a system like “Yandex” bans them. Therefore, it was decided to do it by people. Write a comment from yourself with the vector indicated by us. For example, about the G-20, you can write that it is very honorable for Russia,”

Here we go, as far as other offices goes:

“”Now we are recruiting people, in several cities we are acting – Moscow, Peter”, Alexey specifies. He says that they do not have anything to do with Nashi, but it does not exclude that something like that will turn out.”

So Alexey may have an explicit Nashi connection which could make an explicit personnel bridge between Nashi and IRA.

Outside of the above, I’m not finding much reliable source information on Alexei / Alexey Soskovets and North-West / North-Western Service Agency. Or in conjunction with mentions of Moscow. Maybe a Russian-language business search would turn something up, but I’m not quite there yet.

In fact, the frequency with which the Wikipedia IRA source text is quoted verbatim on third party forums is dubious in and of itself.