Serhii Kolodynskyi

Head of App Development

Co-founder of Sadok.app. Developer, project manager, and product architect across mobile and SaaS products. I work at a CTO level in telecom and software products.

  • Product Architect
  • Project Manager
  • Mobile Developer
  • Backend Developer
  • SaaS

15+

Years in IT

3M+

WiFi Heatmap downloads

2M+

Wi-Fi AR downloads

10+

Years of tech leadership

Kolodinsky Serhii

About specialist

IT professional with 15+ years of experience in product development, telecom infrastructure, mobile applications, and SaaS platforms. I combine hands-on development, product architecture, and project management.

Co-founder of Sadok.app, a digital platform for preschools and after-school centers. I led development and scaling of the product: a CRM and communication platform for preschools.

I’ve also contributed to commercially successful mobile products: WiFi Heatmap (3M+ downloads) and Wi-Fi AR (2M+ downloads).

Contact us

Professional education

Master's degree, Information Technologies

State University of Telecommunications, Kyiv

Skills & Certificates

  • Product management
  • Project coordination
  • Technical architecture
  • Team & process leadership
  • Crisis management
  • Mobile development
  • SaaS platforms

Growing your business is our job

Comprehensive promotion, website development and strategic marketing.