Responsibilities include:
Integrated various vendor services, including bill payments (Payoo, SmartPay, Epay, FTEL,..), software key distribution (PSD, FPT Play, HTECH,…), mobile top-up and recharge, and SIM FPT activation and sales, ensuring smooth transactions and efficient system performance.
Resolved technical debt by upgrading the system from .NET Core 2.1 to .NET 6, improving performance, security, and maintainability.
Optimized SQL query execution plans and Elasticsearch DSL, improving indexing efficiency, minimizing round-trip time, and enhancing overall query performance.
Refactored APIs to reduce latency (under 200ms), increase throughput, and optimize microservices performance, enhancing scalability and system resilience.
Reduced service bottlenecks by 70% during peak transaction periods, enhancing system performance, throughput, and responsiveness.
Handled concurrent transactions using Data Versioning and the Pub/Sub Pattern, ensuring data consistency.
Handled a high-throughput system, processing 5,000 requests per second, ensuring scalability, performance
Performed integration testing using Postman, improving deployment accuracy and reducing errors in the production environment.
Responsibilities include:
Designed, developed, and tested a data import management screen for the ERP system
Implemented CRUD operations using ADO.NET and SQL Server, improving data processing speed and reducing query execution time
Gained hands-on experience with the MVC framework, working on backend logic, data flow management, and improving system maintainability
Developed and optimized user interfaces using DevExtreme UI, HTML/CSS, and JavaScript, enhancing the user experience and system responsiveness
Assisted in testing and validation, ensuring system reliability before deployment