Dev Doodles

Prajapati by MetLife – The First Digital Paperless Sales Tool for Insurance

Prajapati is a pioneering mobile/tablet application designed for the field force of MetLife Bangladesh, facilitating a paperless policy application process. Launched in early 2017, this digital sales tool is designed to streamline various aspects of insurance policy management and sales.

My Role: I worked as the backend developer for the entire project.

Major Features:

• Prospect Creation: Capability to create and manage potential customer profiles.
• Personal Need Analysis: Tool for assessing individual customer needs.
• Financial Need Analysis: Functionality to evaluate financial requirements for insurance.
• Products & Riders Selection: Allows selection of insurance products and additional riders.
• Premium Calculation: Automated calculation of premiums for selected products and riders.
• Benefit & Sales Declaration: Features to declare benefits and manage sales declarations.
• Policy Application Form Automation: Streamlines the policy application process through automation.
• Local PDF Creation: Generates PDFs locally on the device.
• Email Option: Allows sending of application forms and related documents via email.
• Digital Signature: Incorporates digital signing of documents.
• BA Authorisation: Facilitates Business Associate (BA) authorization within the application.

Technology Stack:

• Java Spring: Used for server-side development and business logic implementation.
• IBM MobileFirst Platform: Utilized for integrating mobile applications with enterprise systems.
• Android: Platform for the mobile application, enabling its deployment on Samsung Tabs used by the field force.

A Few Screenshots of the Project :

The Nissan Driver’s Guide app | Augmented Reality Based

The Nissan Driver’s Guide is a mobile app available on iOS and Android that uses Augmented Reality (AR) to help users learn about their vehicles. The app provides interactive guidance on various vehicle controls and features.

Project video : https://www.youtube.com/watch?v=qhdA2mZshfU

My Role: Tech Lead (Web & Cloud), Application Backend Development Team

As the Tech Lead for backend development, I was responsible for leading the backend team and overseeing the creation and management of the web backend for the application. I designed scalable backend solutions, managed task distribution among team members, and ensured the efficient progress of development milestones. Additionally, I was actively involved in hands-on development, addressing the issues and contributing to any troubleshoot when needed.

Key Features (Web Backend):

1. Application Configuration:
   • Sync: Manage online and offline synchronization.
   • Car and Language Setup: Configure settings for multiple car models and 14 languages. Currently, it supports 11 car models and is available in 14 languages.
2. Dynamic Content Management:
   • Content Generation: Handle the creation and management of ePub files for vehicle manuals.
   • Media Management: Manage images and videos, validate ePub files, and optimize content.
   • Text Editing: Provide tools for dynamic text editing.
3. Notifications:
   • Push Notifications: Utilize Firebase Cloud Messaging (FCM) for custom and auto notifications.
   • Car-Specific Alerts: Send updates and alerts specific to individual car models.
4. User Management:
   • Audit Trails: Track all user actions, including adding, editing, and deleting data.
   • Access Control: Implement role-based access control, feature-specific permissions, and user-specific operations.
5. Logging:
   • Comprehensive Logs: Maintain logs for API access, web application performance, email notifications, push notifications, errors, and user activities.
6. Feedback Management:
   • User Feedback: Collect and manage user feedback and queries.

Technologies Used:

• Backend Framework: Django
• Database: MySQL
• API Development: Django Rest Framework
• Notifications: Firebase Cloud Messaging (FCM)
• Deployment: I deployed the application on their on-premises server.

App Link (Android): https://play.google.com/store/apps/details?id=com.nissan.alldriverguide

App Link (iOS): https://apps.apple.com/gb/app/nissan-drivers-guide/id913672032?platform=iphone

Hitachi airCloud Pro – Cloud Backbone of HVAC System (Smart HVAC IoT Solution)

Worked on the first commercial IoT product of Johnson Control HITACHI. The system was the backbone of the IoT solution for Johnson Control HITACHI to make the HVAC systems smarter.

My Role: Tech Lead (Web & Cloud), Application Development Team

Project Overview :

The project was a significant journey in IoT development with Johnson Control HITACHI

• Originating from a proposal at Japan IT Week 2018.
• Involvement in an IoT project, requiring adaptation to new technology stacks recommended by JCH.
• Collaboration with various international JCH teams for solution development and validation.
• Overcoming strong competition to become a top contender.
• Demonstrating exceptional capability through a competitive study and a proof-of-concept using KII cloud, leading to strong recommendations.
• Ultimately being selected to take over the project due to the initial vendor’s struggles.
• Extensive international collaboration, including multiple visits and training sessions.
• Growth of the team and expansion into additional projects.
• Successful project completion and delivery to JCI Milwaukee, USA.
• The project, “Air Cloud Pro,” forms the backbone of the IoT solution for smarter HVAC systems by Johnson Control HITACHI.

Project Video: https://www.youtube.com/watch?v=JhdOm6YO6C0

Project Details: https://www.hitachiaircon.com/mea/en/ranges/iot-solutions-controllers/aircloudpro

2 years journey in 5 minutes : https://www.youtube.com/watch?v=OU1T7bHG2mE

Challenges we overcome :

• Managing Different Time Zones
  • The project involved stakeholders from six different time zones, creating complexities in coordination and project management.
  • The time differences led to delays in decision-making, communication bottlenecks, and scheduling inefficiencies.
• Ensuring Secure Data Flow from JCH
  • A total of 80 security items needed to be addressed to ensure data flow security.
  • Each item required thorough assessment and implementation of appropriate security measures.
• Scheduling
  • The gateway device relied on legacy firmware for scheduling, creating challenges in managing gateway operations.
  • Scheduling an IDU required generating a .dat file containing a 3,133-byte-long string for each IDU. With a maximum of 160 IDUs per gateway, the file became large, making debugging and testing difficult.
  • The testing of .dat files was exclusively handled by the gateway team, leading to delays and inefficiencies.
• Over-the-Air (OTA) Updates
  • Initially, the firmware could not be updated once the devices were shipped, a limitation discovered just before release.
  • The hardware team introduced OTA updates at the last moment, allowing remote firmware upgrades.

News Link: https://www.thedailystar.net/bytes/news/japanese-tech-giant-hitachi-launches-iot-product-using-bangladeshi-software-know-how-1903150