I continue to perform essentially the same specialized duties I carried out while in Vietnam, and have also increased my focus on the following areas:

- Established and grew U.S-based architecture team; facilitated cross-regional knowledge transfer and collaboration.

- Provided architectural guidance to ensure consistency across services; optimized workflows to meet client throughput and cycle time requirements.

- Developed internal technical training materials to upskill engineering teams.

As the Software Architect at Fortna Product R&D, I was responsible for designing and guiding the technical architecture of the company’s Warehouse Execution System (FortnaWES) product suite. Our vision was to position FortnaWES as a market leader in distribution center fulfillment. I also actively contributed to the implementation of FortnaWES to ensure alignment with architectural principles and high-quality standards. My focus areas included:

- Led architecture for FortnaWES, a scalable Warehouse Execution System supporting multi-channel fulfillment across diverse distribution center sizes and product categories.

- Modernized legacy monolithic system to microservices architecture with containerized deployment, enabling cloud readiness and operational flexibility .

- Developed Java-based frameworks that accelerated the creation of lightweight, high-performance, and highly available FortnaWES applications.

- Designed modular UI framework enabling parallel development across teams, improving delivery speed and maintainability .

- Built hardware simulators to streamline development and testing without relying on physical devices.

Finally , I led a small research team focused on exploring new technologies, building proofs of concept, and proposing innovations to enhance and optimize the FortnaWES product suite.

It is small team that was created by me and my friends focusing on out-source area. As a technical leader of team, my focus was on strategy, solution design and problem solving.

I worked for Viettel Group as a Backend and Big-Data Developer responsible for developing tools and system application for analyzing traffic on large network using many technologies like Kafka, Storm, Hadoop, Zookeeper, etc...

During this time, I was also responsible for the two large-scale projects:

- A system for realtime filtering and blocking spam SMS (Bronze Award in IT World Awards 2016) that handles almost 1,000,000 SMS/minute and successfully block 80-90% spam SMS in the entire carrier network.

- A realtime, large-scale storing and analyzing message system using HDFS and Map-Reduce technology that can handles over 1,000,000 messages/second.

I was responsible for developing a messaging application on Android.

Besides developing UI, I spent almost time on benchmarking and improving libraries regarding the connection management, photo optimization, battery life optimization.

My responsibility was finding the efficient solution for customers bases on their concepts and requirements. It also included designing architecture of mobile application, the communication model with other service and working as developer in some projects.

In addition, I also spent time in research and building a few effective libraries/frameworks to improve development process, optimize UI rendering, battery and improve performance of application.

Plugins are used in drone.io for customizing CI/CD pipeline

A simple docker-based build tool which brings to you independent and consistent build environment.

It is a simple library in order to support us build up a native-sql application which is able to switch among database vendors easily.

Sqlbundle is a database migration tool. It manages your database schema by creating incremental SQL changes. Current version is supporting PostgreSQL and Oracle.

Buildpack is created in order to build up an independent and persistent environment for building and publishing application by using standard containers.

This is centralization logging solution for on-premise docker swarm. Main purposes of its are providing traceability of flow in micro-services system, friendly web interface for debuggability. It also is able to connect to other logging solution like ELK and GrayLog.