Secure your mobile apps

Monitor ATMS Real time

Our Services

Banking Tech Solutions

Serving & optimising the financial services industry


Effective energy solutions & backup systems that is cost savings for clients

IT Infrastructure

The right solutions that exceed client's expectations

Software Development

Callens provides full-cycle software development services

Cyber Security

Comprehensive security services with Managed & Professional Services

IT Consulting Services

IT consultancy services & business IT support for organizations of any size. 

why we are the best

ATM Maintenance Solution

We take pride in being able to help our customers lower the cost of maintaining their ATMs throughout their entire lifecycle.

  • - First Line 
Maintenance Training
  • - Second Line 
Hardware Maintenance
  • - ATM Rigging
  • - ATM Monitoring & Analytics


Our Markets

Financial Services & Technology

Global technology provider serving and optimising the financial services industry.

Utilities & Renewables

Effective energy solutions and backup systems that is cost savings for clients

Retail & E-Commerce

Pioneers in design-build specializing in retail and online shopping portals.

Telecommunication Services

Our projects include a significant proportion of the Africa's Telecom Setup