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CellCelly

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TelCo project during i2i 2023 internship.

Here is a table of the project

Name Roles
Ahmet Berkay Seyhun Project Manager
Efe Ertuğ Erdem DGW
Ali Geniş Kafka
Mertkan İşcan OCS
Burak Celiloğlu Oracle DB
Emre Efe Test1 (OCS, DGW, SF, Kafka)
Sena Akdoğan IVR-SMS
Arda Adayener Test3 (IOS, Android, Web)
Ali Enes Doğan IOS
Elifnur Kabalcı Android
Hatice Sudenas Çapacı VoltDB
Aslıhan Altun Test2 (MW, VoltDB, Hazelcast)
Ahmet Usta SF
Ramazan Fırat Akdağ MW
Okan Çezik Hazelcast
Erkam Doğrul Web
Muhammed Ali Fırat Analyst / Designer

The system shall:

  • Provide user interfaces for mobile (Android/IOS), web, SMS, and IVR channels to allow users to register, login, view account details, and manage their account
  • Integrate with various backend systems including MW, AOM, Kafka, SF, Oracle DB, OCS, and VoltDB to enable user account management, billing, and tariff functionalities
  • Utilize Kafka and SF for data transmission between systems
  • Leverage VoltDB to store and retrieve user account data including tariffs, usage, and remaining balances
  • Use Oracle DB as the system of record for user, product, and billing data
  • Employ OCS for real-time usage tracking, tariff management, and billing
  • Have test suites implemented covering functionality, performance, reliability, and data integrity for mobile apps, backends systems, and interfaces

The system architecture shall:

  • Consist of decoupled front-end channels, middleware, and backend data and processing systems
  • Enable asynchronous near real-time data flow between systems using Kafka messaging
  • Maintain data consistency across backends using Oracle DB as the source of truth

Key functional requirements include:

  • User self sign-up and login across channels
  • Real-time account usage tracking and balance deduction
  • Configurable tariff plans and rate management
  • Querying of remaining balances and usage
  • Secure storage of user credentials and account data
  • Reliable failover and recovery mechanisms

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TelCo project during internship.

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