Deowan Faruque Ahamed

A large-scale billing system. Over 20000 employees from over 500 workspaces will be using the system daily from all over the country. Over 30 million electricity bills will be processed per month by this system. Modules for this system are Electricity Meter Reading by Image Capturing, New Connection Application, Consumer Management, Billing, Collection, and Accounting management system.

Challenges:

• Initially, the software was developed using the MS SQL server database. But later, the client chooses to use the oracle database. So, a large-scale database migration task is performed. Now the system is working fine with both databases.
• The software was developed using .NET Framework 4.x. But later, we migrated to .NET 6
• Since it is a financial system, network security is the priority. So, different network zones (VPN, DMZ) are used for modules. The data synchronization between zones was a challenge.
• Almost all banks in Bangladesh are connected to this system via VPN. We have to support them in implementing our bill payment API
• There are legacy data with different shapes for each workspace. We have to migrate them into our system.

Responsibilities:

• Involved since the project initialization.
• Collecting requirements and visiting client premises in several locations.
• Involved in writing Software Requirement Specification (SRS).
• Designed databases and corresponding user interfaces.
• Write back-end and front-end validation and business logic.
• Architecting the solution using the Serenity platform.
• Write unit test cases for critical business rules.
• Performed research and development (R&D) for electricity meter readings by capturing meter images. R&D task performed using python and Jupyter Notebook. Later, it converted to java for integration with the android app.
• Implemented two-factor authentication.
• Implemented distributed caching using Redis.
• Deployed the system to the client's data center (about 20 servers) as a distributed system.
• Developed a server management tool to deploy the published application files to the servers using SSH and SCP.

This is a complete sea-port automation system used at Mongla Port. Modules for this system are Container Yard, Transit Shed, and Port Billing, etc. Integration with ASYCUDA through IGM.

Challenges:

• The port business is a new domain for us. We have to study a lot to understand the requirements.
• Visual representation of the port yard and locating the cargo inside the port was a challenge.
• The users did not have much IT knowledge to operate the system. So, implementation was another challenge.

Responsibilities:

• Designed and developed an end-to-end solution based on the requirements.
• Developed the visual representation of the port yard using the WebGL library (babylon.js).
• Integrated google maps to locate incoming and outgoing vessels.
• Import General Manifest (IGM) XML file importing facility.

Online licensing and approval system for any business entities of Power/Gas/Petroleum Production, Transition, or Distribution Companies

URL: http://elicense.berc.org.bd/

This project integrates AIMS Bangladesh with IATI where Development partners publish their data on aid activities through the International Aid Transparency Initiative (IATI). This project's aim is to start using IATI data in Bangladesh's Aid Information Management System (AIMS) and improve the quality of the data held in the AIMS and reduce the burden of data collection.

URL: http://aims.erd.gov.bd/IATIImportSite

As part of this project, I designed and developed a tool to simplify the data entry process for purchase orders that are received as PDF files. These PDF files are in different format for each buyer. The tool uses advanced PDF data extraction techniques to automatically extract relevant information from the purchase orders, such as the item name, quantity, unit price, and total cost. This eliminates the need for manual data entry, saving time and reducing errors.

In this project, I designed and developed a cross-database single-sign-on (SSO) user management module that can be easily integrated with any project. The module provides a secure and efficient way of managing user accounts across multiple applications, with a single set of login credentials. The module was designed to work with a variety of databases, making it highly flexible and customizable. The end result was a robust, scalable and user-friendly module that improved user management and provided a seamless user experience.

Enhancing WIMS by adding new features like: Automatic item re-order and requisition system, item issue trend analysis; Real-time integration WIMS-LMS (Loyalty Management System) a gift distribution system of Banglalink through WCF service

A solution to all business needs including Finances, Human resources, Manufacturing, Supply chain and etc.

Security software that can restrict employees to do unauthorized access of apps and websites, monitor employees’ activity and send screenshots to the server, remotely change the employees’ privileges. It also provides file sharing and chatting facility.

• Block Applications– Users can run only those apps that are assigned to them and all others apps are blocked. So, they cannot waste their office time by playing games or watching movies.
• Block websites– This feature helps you to block the specific websites that are used to pass time such as Facebook and Twitter etc.
• Prevent access to specific hard disk drives– Users can only access those disk drives that are assigned to them. If a user has only d: and f: drives then he can only access these drives.
• Restrict from using USB drive/Pen drive/CD-DVD drive– USB drives are used to transfer files from one PC to another PC. Prevent using these drives; you can save valuable data/files.
• Automatically capture screenshots and send them to the server– this software capture screenshots of the specific apps at a specific interval and send them to the server. You can see these screenshots whenever you want.
• File transferring/sharing– it is easy to transfer files using this software, you have to select a file. The file is automatically uploaded to the server and at the receiver’s PC, it is automatically downloaded.
• Chatting– The users can send messages instantly. Supports private and public chat.
• Protects from viruses– Since this software blocks all unnecessary apps including viruses, so you do not need an antivirus.