Home→Tutors→Sergey Didenko
Tutor

Sergey Didenko

Founder of OnStudy, entrepreneur

Started out in sales — making the calls, negotiating and tracking the funnel himself — then built sales teams, for his own companies and for clients. Since 2016 he has been growing OnStudy and advising business owners on sales, processes, teams and putting AI to work. At the school he teaches programmes on sales, marketing, management and working with AI.

2016the year OnStudy was founded
300+companies analysed
10paid programmes at OnStudy
OnStudySalesProcessesTeamPutting AI to workLomonosov Moscow State University
Sergey Didenko, founder of OnStudy, entrepreneur

In brief

Specialism
Sales and negotiation, business processes, team management, putting AI to work
Experience
Built sales teams for his own companies and for clients; founder of the OnStudy learning centre
Current practice
Consulting and mentoring for business owners and managers
Education
Lomonosov Moscow State University
Class formats
Video lessons, practice on your own business, reviews of real calls and deals, live sessions
Who it suits
Business owners and managers, sales managers, marketers and anyone getting to grips with AI

About the tutor

Sergey Didenko is the founder of OnStudy and an entrepreneur. He started out in sales, went on to build sales teams, and later took on processes, the financial model and the team as a whole.

In his own words

“For nine years I have been doing the same thing: taking a business apart and putting it back together so that it runs without the owner steering it by hand.”

“Alongside that I built OnStudy — an education company running since 2016. It is my own business, with all the same problems: hiring, unit economics, automation, putting AI into everyday work. I speak from running it, not from theory.”

From Sergey’s one-to-one consulting page

What he teaches

  • Handling objections and closing deals without pressure
  • Building a sales team: scripts, CRM, metrics
  • Documenting processes so the company runs without the owner steering by hand
  • Building marketing and social media content
  • Using AI in everyday work

Experience and projects

Industry experience

Sales and sales teams

Started as a sales rep: calls, negotiations, the funnel. Then built sales teams — for his own projects and for clients.

Projects and practice

OnStudy

An education company running since 2016: hiring, unit economics, automation and putting AI into everyday work — on his own business.

Expertise

Advising business owners

One-off reviews, diagnostics and mentoring: sales, processes, teams, putting AI to work.

How classes work

Based on the programmes Sales, Negotiation and Results and A Profitable Business.

Theory

Modules with video lectures — Sales, Negotiation and Results has 14 of them.

Practice

Assignments are done on your own business, with support from curators.

Reviews

Reviews of real calls and deals, not textbook cases.

Outcome

The final project is a working tool, not a test: a script, a CRM and a plan.

Questions about the programmes?

We’ll help you choose which of Sergey’s programmes suits your goals and level, and explain how the classes work.

OnStudy I have a question
OnStudyAbout the school in 15 seconds