Kolesnikov Advisory
We help companies find what is slowing them down, build the systems they are missing, and move complex work forward — with rare, working access to the corridor between Ukraine, Europe, and Latin America.
Ukraine ↔ Europe ↔ Latin America
The problem behind the problem
A website may look like the problem when the real issue is an unclear offer. Sales may look weak when nobody has defined the right buyer. A technical project may appear stuck because of engineering when the actual problem is ownership, communication, or a decision nobody wants to make.
We separate symptoms from causes, identify the real blockage, and turn it into a practical plan.
“We know this should work.”and
“Why is it still not working?”
Services
Business Diagnosis
We examine your product, offer, people, process, technology, and communication to see where value, time, and opportunities are being lost.
Positioning and Sales
We turn technical capability into a clear commercial offer: what it does, who needs it, why it matters, and why someone should choose it now.
Web Development and Digital Systems
A website is not decoration. It should explain the offer, support sales, collect useful information, and make the company easier to operate.
International Partnerships
We help teams prepare for cross-border business, reach relevant partners, and keep opportunities moving after the first introduction — with particular strength across Europe, Ukraine, and Latin America.
Complex Project Delivery
Some projects cross sales, technology, operations, institutions, and law. We create structure, connect the right people, translate between specialists, and keep the project moving.
How we work
We start with the business problem, not the requested deliverable. Sometimes you need a new website. Sometimes you need a better offer. Sometimes the website is fine and the actual problem is somewhere else.
We define the result, priorities, responsibilities, and the shortest realistic route forward.
We build, coordinate, and implement. Advice is useful. A working result is better.
Featured work
A Ukrainian defense-tech company developing counter-UAS systems. We delivered brand and commercial positioning, website strategy and development, product portfolio organization, and international business development support.
The value: a technically complex, classified portfolio became a coherent public proposition that partners can understand, evaluate, and discuss — without exposing sensitive operational detail.
The digital platform of the Sustainable Development and Environmental Law Center, affiliated with Yaroslav Mudryi National Law University. We structured research, projects, publications, courses, and events, and supported international communication.
The value: a large body of specialist material became a credible, navigable platform for researchers, institutions, partners, and funders.
Energy Security Marshall Plan — a pre-investment screening platform for distributed clean-energy projects in Ukraine. Information digital twins of cities, deterministic financial models, and an AI-assisted analyst for investors, MDBs, foundations, and municipalities.
The value: war risk, grid attacks, and donor overlap make Ukrainian projects hard to screen — ESMP turns fragmented open data into bankable, investor-grade memos with numbers you can verify.
A licensed Ukrainian online school for children at home and abroad: live lessons, parent oversight, billing, homework, and curator workflows. We designed the full product architecture and interface system for five audiences on one platform. Enrollment is planned for 2027; figures below are Year 1 business-plan targets.
The plan: by the end of year 1, EduWay will serve ≈210 active students (~180–200 families), with curators running retention and debt workflows in a single console — and a target of 30–40% less time on billing chases, attendance lists, and parent follow-ups vs. spreadsheets and messengers.
An online platform for intellectual game tournaments: team lobbies, live hosted shows, scheduled play, results, and a full host console. We designed the complete product flow from tournament catalogue to operations hub.
In production: in the first ~5 months of live use (Feb–Jul 2026), KHVIP onboarded ≈760 players, ran 325 tournaments, and completed 6,030 games. Primary traction is self-paced and scheduled play; the hosted console is in early rollout (first live events supported).
About the founder
Founder and Lead Advisor
Languages: Ukrainian, English, Russian
Sergii works at the intersection of business development, digital systems, international cooperation, and law — with 14+ years across digital development, business operations, international communications, and legal-adjacent work.
Before founding Kolesnikov Advisory, he worked as a web developer, IT coordinator, business developer, and international communications specialist across US nonprofit organizations, Ukrainian defense technology, and environmental-law initiatives. He leads diagnosis, strategy, and delivery, bringing in additional specialists when a project requires them.
“Most business problems do not respect departmental boundaries. One problem can involve sales, a website, operations, partners, and legal constraints at the same time. Someone has to see the whole picture.”
Good fit / Bad fit
Final step
Tell us what you are building, what is going wrong, and what result you need. We will start by separating the symptoms from the cause. If we can help, we will tell you what the next step should be. If we cannot, we will say so.