A collection of notable projects I've participated in as Developer, Dev Lead, Team Lead. Each case study focuses on context, challenges, technical solutions, and real results.
Discuss, analyze requirements, and come up with solutions to solve problems.
Coding.
Customer exchange.
Customer exchange.
BCSS is a centralized management system for VNSKY telecom, supporting product, sales, and customer management. The platform also includes a partner web portal for SIM stock management and subscriber activation. The system is operated on a modern infrastructure with Kubernetes, Kong Gateway, and monitoring via Kibana.
Sky Sale is an app within the BCSS ecosystem, serving partners to manage SIM inventory, packages, quickly activate subscribers, and synchronize status with VNSKY's central system. The app is developed with Flutter and connects to the BCSS backend.
This outboard SIM sales website enables customers to easily purchase SIM cards for international travel, with SEO optimization, great mobile experience, complete order and product management, reconciliation reporting, and ongoing operational support.
GEM Web Sale is a system supporting Mobifone's sales operations, managing SIM inventory, numbers, orders, reconciliation reports, multi-channel sales integration, and direct connection to Mobifone and major e-commerce platforms.
Cho ESim is an independent app for selling eSIMs and related services to VNSKY and Mobifone, including features like topup. The solution includes a mobile app, a CMS for order and product management, sales reports, and deep integration with the BCSS and GEM ecosystem.
CIC is a large-scale project related to national credit data, processing and managing credit information from financial institutions. The system uses Apache Cassandra for big data processing, Oracle Database for relational data storage, ELK Stack for monitoring and log analysis, and NextJS for modern web interface.
