About ONSEE DOO®

Who We Are

ONSEE DOO® is Serbian IT company founded in 2014 and specializing in payment systems, member card solutions, smart access control, and cloud‑hosted software services. ONSEE DOO® operates from Belgrade and provides IT service design, development, and maintenance, with systems hosted on AWS and Azure cloud platforms.

Over the years, ONSEE DOO® has delivered solutions for multiple industries, including:

  • Financial services

  • Merchants & retail

  • Banks

  • Schools

  • Government

  • Fitness & sports centers

  • Pavement maintenance systems

Our Story

ONSEE DOO® began by building mobile payment systems, including the mPay4all™ service — a mobile payment platform designed for fast, secure transactions.

From there, the company expanded into:

  • Member Cards Management Systems

  • Smart Door Lock Systems

  • Attendance Tracking

  • Cloud‑hosted enterprise software

These technologies naturally evolved into a complete solution for gyms: OnseeFit Pro™ — combining member cards, CRM (Customer Relationship Management) automation, time tracking, and IT services into one unified platform.

Our Values

Reliability

We build systems that run 24/7 — from payments to access control.

Security

Our services run on AWS and Azure, ensuring enterprise‑grade protection.

Experience

Decades of work across financial services, government, and enterprise systems.

Innovation

From mobile payments to smart access control, we continuously evolve our technology.

Where We Are