Sergey Butko

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Sergey Butko

Sergey Butko

CEO and Co-Founder

Sergey is a tech entrepreneur based in Kraków, Poland, recognized by Forbes 30 Under 30 Europe (2019, for CallPage) and Forbes 30 Under 30 Poland (2023, for Certifier). He co-founded CallPage, a VC-backed B2B SaaS that raised $4.5M and was later acquired by SaaS Labs in 2021, where he led marketing, growth, and lead acquisition.

In 2020, Sergey launched Certifier, a platform building digital credential infrastructure through APIs and tools for issuing, managing, and verifying certificates, diplomas, and badges. Today, Certifier serves more than 2,000 business and institutional clients worldwide, and Sergey is a frequent public voice on digital certification, identity, and the future of credentialing.

Expertise:

SaaS Growth

Digital Credentials

APIs

Product Marketing

Company Operations

Education:

  • BA Economics at Krakow University of Economics, Poland

    Studied economics and business management with a curriculum covering economic theory, finance, and quantitative analysis. Built a foundation in organizational strategy, international business, and market-driven decision-making.

Latest articles by Sergey

What Are the Best Certopus Alternatives? cover image

What Are the Best Certopus Alternatives?

5 Best CredSure Alternatives for Digital Credentials cover image

5 Best CredSure Alternatives for Digital Credentials

How to Automatically Generate Eventbrite Certificate of Attendance? cover image

How to Automatically Generate Eventbrite Certificate of Attendance?

15 Free Life Coaching Certificate Templates cover image

15 Free Life Coaching Certificate Templates

The Toolbox: 14 Top Digital Credential Management Software in 2025 cover image

The Toolbox: 14 Top Digital Credential Management Software in 2025

Types of Digital Certificates cover image

Types of Digital Certificates

What Is a Credly Badge? cover image

27 Feb, 2024

What Is a Credly Badge?

Examples of Effective Ad Campaigns for Online Courses cover image

27 Feb, 2024

Examples of Effective Ad Campaigns for Online Courses

Warranty Certificates: Best Practices, Inspirations and Free Templates cover image

Warranty Certificates: Best Practices, Inspirations and Free Templates

Create and Send Digital Credentials

Take your digital certificate creation process to the next level. Design, issue, send, and track highly personalized certificates & badges in minutes.

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