• Design, implement and integrate geospatial search and retrieval using various OCG (WMS, WMTS, WCS, WFS, CSW) and open search web services standards. • Manage a cross functional agile/scrum team of software, devops and test engineers• Implement a CICD Jenkin based pipeline that streamline the delivery of containerized docker application onto AWS govCloud on a nightly basis• Lead the deployment and troubleshooting of containerized applications on AWS C2S operational environment • Provide technical expertise in analysis, prototyping and performance turning of Solr Cloud cluster hosting over 200 million records.• Provide performance reviews, coaching and mentoring of direct reports• Support hiring, interview and develop talent within the team.

• Lead the development of Traveler Verification System (TVS) for Land Port of Entry• Develop springboot microservice applications hosted on AWS via Apache Mesos via PaaS• Develop and deploy AWS stack applications leveraging IaaS and SaaS products: EC2, S3, RDS, SQS, Lambda, etc.• Support the development and field deployment of TVS for air environment.• Interface with external technical teams as SME for TVS Web and Mobile Application Software Engineer• Design a full stack J2EE web application using struts, hibernate and deploy on Websphere• Refactor web UI to leverage boostrap framework and other libraries • Support the development of four cordova based mobile applications

DIB Senior Software and Test Engineer• Architect functional conformance test for the Distributed Common Ground System (DCGS) Integration Backbone (DIB) program• Design test and develop functionality for various web services protocol: Simple Object Access Protocol (SOAP), Representation State Transfer (REST); and message specification: Dod Discovery Metadata Specification (DDMS v2.0, v4.0), DISA Net-Centric Enterprise Services (NCES) Federated Search v1.3. Open Search. • Extend soapUI’s capability with custom code to enhance user friendliness and leverage test reusability. Enable test to be portable outside development lab.• Design and manage continue integration environment with Jenkins automated build jobs. Develop maven project to enable nightly system integration test utilizing soapUI plugin. • Support the development of DIB v4.0 and built 3rd party OSGi bundle plugins. • Debug and analyze defect for DIB v1.3, v2.0, v3.0 using various tools: eclipse, tcpMon, soapUI. • Document test architecture and design on Confluence, Visio, Rhapsody• Support Protection Layer 3 requirements captures and test design. • Agile Software Development – SCRUM• Support agile development using JIRA and Scrumworks. • Participate in daily standup, weekly grooming and biweekly review.• Interface with customer’s program office• Act as the company representative at customer’s lab in a multi-agency collaboration environment• Support bi-weekly review and customer’s program office travel for technical presentation.IRAD Lead Software Engineer• Led General Purpose Computing (GPU) research for signal processing application • Performed studies on open search open source solution (OpenCL) and proprietary solution CUDA.• Implemented beam forming signal processing algorithm in OpenCL and CUDA to enable parallel computing using GPU.

Organized first DC-area Vietnamese Heritage Festival drawing 10,000 attendees and $80,000 in revenueManage the operation of the festival for influential Vietnamese-American nonprofit

• Assisted with 3 tier web based application development in .NET framework• Implemented use cases and assist with the enhancement of other use cases• Performed bug fixes, investigate and develop unit test

• End users and applications support and develop computer management inventory tools• Assisted with system refresh project, large scale software deployment and support

• Validated and designed functional testing for multi axis controller • Assisted with engineering investigation of controller modules. • Developed and implemented RTOS based test programs