Amber CRM is a cloud-based system for small and medium-sized businesses that allows you to set up business processes, set tasks for subordinates and establish communication with clients. The application helps employees work out of the office, and managers can control the process even while on vacation or on a business trip.

Many companies that use Amber CRM have remote employees. To make it more convenient for them to perform daily tasks and achieve the set KPIs, the customer decided to make a mobile application.

Most remote employees use Android-based devices.
We needed to develop an application for this platform that would make it easy to access the system from a smartphone and tablet.

Before we started the work, the whole team conducted a preliminary analysis of possible problems and worked out ways to solve them. And the flexible approach to development allowed us to diagnose initially erroneous and non-optimal solutions - and to correct them in time.

We needed to write a CRM client that would work offline and be able to handle a sufficiently large amount of local data and media files for a mobile application. To allow the user to smoothly scroll through tasks, contacts, transactions and other lists, we had to move away from the classic object model and use caching of metadata in the form of hash tables in memory.

We came up with a solution that handles up to a million offline records for the main «Tasks» section and several hundreds of thousands of records for «Customers», «Contacts», and «Deals» sections «without brakes».

Work on the CRM-client was time-consuming, so we accelerated during the development of the user interface to meet deadlines.

Solving some technical tasks, we had to abandon the classic approach to application development and experiment.

Some tasks turned out to be more specific to server components than to applications. That's why we changed our development approach several times and implemented other technologies right in the middle of sprints.