Dmytro Mashtalir, 29 years

Business field:: E-commerce, marketplaces, marketing, building sales departments, CRM and automation, recruiting and mentoring for product-based businesses
Company:: E-commerce growth studio ‘Tsil’, E-commerce Growth Studio Tsil
Business size:: YBC
Marital status:: Married
Looking for in YBC:: I am interested in a community of professionals in e-commerce and marketing—particularly specialists and entrepreneurs who are growing their own agencies and have experience scaling businesses and attracting external investment. Brand marketing, public speaking, and professional events are important areas for me. I also value a community of sales professionals and service companies that help businesses grow.

Section 1: About me. Dossier.

Company

E-commerce growth studio ‘Tsil’

Business size

YBC

Marital status

Married

Movies

Angel A

Books

The Financier trilogy: "The Financier", "The Titan", "The Stoic" — Dreiser.
"The Leader Who Had No Title" — Robin Sharma
"Shantaram" — Gregory David Roberts
"The Alchemist" — Paulo Coelho

Songs

Ukrainian rock

Hobbies

Psychology, Personal development, Football, Extreme sports, Running, Cycling, Futsal, Networking, Learning, Energy practices

City

Kyiv

3 events that changed my life

Meeting his future wife

Birth of a child

Starting his own business

2 people who influenced my life

Mark Sadowski — a coach on how to live life

His older brother, who showed him how to earn money while still a teenager.

1 decision that changed my life

«Stop playing games and start "earning points" in real life and "leveling up" his character (himself)»

Dmytro Mashtalir

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Section 2. About the business. Dossier.

Company name

E-commerce Growth Studio Tsil

Business field

E-commerce, marketplaces, marketing, building sales departments, CRM and automation, recruiting and mentoring for product-based businesses

Years in business

Status

Wise

Team size

Has a partner

Countries of operation

Ukraine

Section 3: Biography.

«A guy from a village who earned $900 for his first laptop by playing games—that was a shock. But I realized you could make money with your own hands»

I’m Dmytro Mashtalir, co-owner of the growth studio «Tsil». Over six years, we’ve grown from ideas in our heads into a team of around 40 people, with more than 80 active clients and case studies generating hundreds of thousands of dollars in monthly revenue.

We launch stores on Prom and Rozetka, and Etsy, build Shopify solutions, and set up Google Ads and Facebook/Instagram/ TikTok advertising. But my story isn’t about tools; it’s about approach, discipline, and systematic scaling. I learned to sell in 2nd grade—and that helped me recognize my entrepreneurial drive and continue exploring it.

Have you ever tried selling stickers from chewing gum? I have. My first «business» began when I was a child: I won pictures in games and gave them to my sister to sell—and that’s how our little profitable operation worked. These childhood deals taught me the simplest things: you can earn money from a young age; create supply and demand; and build a slightly more complex sales model than selling directly. Later, I sold in-game items, and my brother showed me that you could make money… in computer games. And from 2014–2017, I earned a steady income for three-four years by selling in-game items, coins, and artifacts.

300 clients on Prom.ua and meeting my partner — that’s how «Tsil» was born

How did you come up with the business idea?

The idea came from personal experience: - working as a manager and consultant at Prom.ua with a portfolio of around 300 clients - launching my own online stores alongside that work - an in-depth understanding of how marketplaces work After meeting my future partner and studying together, we decided to create our own agency focused on quality and results.

Sales, strategy, and long-term client trust

What key skills helped you launch your business?

sales and negotiation
strategic thinking
understanding how marketplaces work
marketing and positioning; working with clients and building long-term trust

No reputation, verbal agreements, and juggling jobs — three blows at the start

What were the 3 most difficult challenges you solved in the early years?

No clients or reputation in an oversaturated market
Verbal agreements that resulted in financial losses and deception by partners
Running the agency alongside another job during the first years

COVID, war, and staffing challenges — the crisis plan that worked

What crises has your business faced, and how did you overcome them?

initial shortage of clients
clear positioning and a focus on Prom.ua
COVID and the full-scale war
a prepared crisis plan, client retention, and scaling after downturns
staffing and scaling challenges
investment in an HR system, training, and culture

From 300 clients to 15 — and from an agency to an e-commerce growth studio

Which decisions proved most effective for the company’s growth?

narrow specialization instead of «everything for everyone»
serving 15 clients instead of 300
prioritizing quality
transitioning from a marketing agency to an e-commerce growth studio
building internal departments: recruiting, mentoring, AI; systematic work with seasonality and scaling

No contracts or fixed terms — a mistake that shaped business discipline

Which of your mistakes do you now consider your most valuable experience?

Starting a collaboration without contracts or clearly documented terms. This led to financial losses but instilled business discipline.

From chewing-gum stickers to hundreds of thousands of dollars a month

How did you earn your first $100?

My first «business» started when I was a child: I won pictures in games and gave them to my sister, who sold them—and that was how our little profit-making operation worked. It wasn’t $100, but roughly half that amount; still, it was definitely my first experience with sales.

How did you earn your first $1 000?

I earned it by selling in-game items. My brother showed me that you could make money in computer games, too. And from 2014–2017, I earned a steady income for three to four years selling items, coins, and artifacts from games.

How did you earn your first $10 000?

Later, I started importing goods from China and writing a blog about gadgets. Eventually, I worked as a manager at an online media outlet and supported hundreds of clients on marketplaces. This collection of small experiences gave rise to my big idea: to create a service that truly gets a product business off the ground and helps it grow.

How did you earn your first $100 000?

When we launched the agency, our first clients paid us a percentage of the results, often without written agreements. This brought us our first successes, but also taught us some tough lessons: some projects ended in fraud or a breakdown in communication. We lost time, money, and reputation—but that experience taught us to be rigorous about contracts and processes.

Section 4: How can I be useful? Experience I can share.

E-commerce, marketplaces, and AI — how Dmytro can be useful to YBC members

I can share practical experience in scaling product businesses and e-commerce. In particular, I’m ready to share my experience with:

launching and growing a product business on marketplaces (Prom, Rozetka, Etsy) from scratch;
building an e-commerce growth studio as an ecosystem, rather than just a marketing agency;
scaling sales to millions of hryvnias per month in highly competitive niches;
building sales teams, CRM systems, automation, and business processes in product companies;
strategic marketing: jobs to be done, customer journey mapping, and positioning instead of «creative for creativity’s sake»;
building a strong team: hiring, onboarding, culture, training, and mentoring;
transitioning from a service model to partnerships and smart investment in product businesses;
implementing AI to automate marketing, finance, HR, and operational processes.

My experience is about systematic growth, accountability for results, and building a business that can withstand scaling, crises, and competition.

Section 5: Club value

What am I looking for in the club?

I am interested in a community of professionals in e-commerce and marketing—particularly specialists and entrepreneurs who are growing their own agencies and have experience scaling businesses and attracting external investment. Brand marketing, public speaking, and professional events are important areas for me. I also value a community of sales professionals and service companies that help businesses grow.

What have I received from the club?

For me, the club is a space for growth and transformation, for moving up to the x10 level. The high caliber of its members and the strong group dynamic serve as guiding benchmarks.