Client Portal for a Leasing Company with Interbank Identification System and local ERP system Integration: Promagroleasing
Context and Project Goals
The client came with ready-made interface prototypes and a brand book. The company already had its own IT infrastructure, and the new product had to be carefully integrated into it – avoiding redundant processes and meeting all security requirements.
As with many large leasing companies, Promagroleasing’s internal processes were highly regulated. However, the client’s team was proactive and engaged, allowing for fast and effective decision-making.
Project goals:
- Provide clients with a transparent online service;
- Reduce the number of calls and office visits;
- Speed up application processing;
- Reduce front-office workload;
- Prevent payment delays.
How We Met
While researching developers with practical experience in similar implementations, the client found dev.family through an article about client portals and our case for the RESO project.
We were chosen for our proven expertise in building complex solutions for leasing companies and our experience integrating with government systems. At the time, we were one of the few teams on the market with hands-on experience in such integrations.
RESO: Personal account for car leasing
Check out our case study for a leasing company
Development Process
We built the client portal from scratch, integrating it with the existing IT infrastructure. The work was carried out in two-week sprints.
The portal was developed in stages, with integrations implemented in parallel to user functionality, ensuring ready-to-test modules at every step:
- Registration and authorization, user profile, Interbank Identification System and local ERP system integration;
- Dashboard and contracts, payment calendars (integrated with local ERP system);
- Application submission – using Interbank Identification System data; completed forms are sent to local ERP system;
- Notifications and chat.
A separate stage was the Interbank Identification System integration – built from scratch, without any documentation or implementation guides. We manually developed the connection scheme, communicating directly with ERIP, Avest, BFT, and Beltelecom to ensure secure data exchange channels.
We paid special attention to data security and compliance with Belarusian personal data protection laws. A secure data exchange channel was set up, synchronization with local ERP system was added, and flexible tools were built for company managers. We also declined third-party chat services since they did not provide adequate personal data protection.
User Scenario
Andrei, 38, wants to apply for leasing. Previously, he had to call the office, schedule a meeting, fill out paperwork, and wait for a response. Now, he verifies his identity via Interbank Identification System, submits his application online, and immediately sees its status in the portal.
Once the application is approved, he visits the office only to sign the contract. All contract details, including the payment schedule, become available in the portal. Payment reminders are sent automatically.
For the company, this means fewer calls, faster deals, and less manual work.
Core Functionality
The client portal allows users to:
- Register and verify their identity via Interbank Identification System;
- Submit an online leasing application;
- Track application status and receive notifications;
- View payment schedules for contracts;
- Track payment history with detailed statuses (paid, overdue, pending);
- Receive payment reminders;
- Communicate via the built-in chat (currently commented out but planned for activation);
- Invite guarantors for leasing contracts;
- Submit additional applications (e.g., for travel abroad or contract amendments).
All statuses are updated in real time. The portal is mobile-friendly and supports installation as a PWA app on smartphones.
For company employees, an admin panel was developed – featuring a client database with search, contract management, editing of promotional blocks, and application customization.
Want to discuss how to adapt the solution to your business? Come in for a consultation!
Max B. CEO
Design
The interface was designed to minimize cognitive load during large form submissions.
Step-by-step forms with validation are used, fields are auto-filled from Interbank Identification System (name, address, date of birth, etc.), and drafts are auto-saved.
Guarantors can be invited through a clear process, and the interface remains clean and responsive across desktop and mobile devices.
A separate UX solution was the optimization of complex multi-field forms to keep users from feeling overwhelmed or missing important information.
Tech Stack
Data protection was a top priority: encryption during transmission and storage, role-based access control, CSRF protection, and full compliance with personal data regulations.
Team
Benefits for Business
For the company, the system became a real tool that speeds up deals, reduces manager workload, and saves resources. Clear statuses and automated processes improve transparency and control, while full compliance with security standards allows smooth implementation without lengthy approvals.
The new client portal also boosts conversion and expands the audience:
Lower entry barriers
Expanded geography
More leads converting into deals
Higher repeat engagement
Greater loyalty
Mobile reach