Jeff Chung

Jeff Chung Email and Phone Number

Architecting Innovative Solutions | Technology Leader
Jeff Chung's Location
Irvine, California, United States, United States
Jeff Chung's Contact Details

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About Jeff Chung

Extensive experience managing the specification, architecture, design, development, and installation of software. Leveraging modern technologies and best practices, including AWS and AI, to deliver scalable, high-performance applications focusing on quality, security, and maintainability. Proven expertise in leading cross-functional teams and solving complex technical challenges to meet business objectives. Previously held a Secret security clearance, eligible for reinstatement.

Jeff Chung's Current Company Details

Architecting Innovative Solutions | Technology Leader
Jeff Chung Work Experience Details
  • Equality Health
    Software Development Manager
    Equality Health Feb 2019 - Jul 2024
    Phoenix, Arizona
    • Led the cross-functional development, deployment, and ongoing support of CareEmpower, Equality Health's flagship web application (Java, Spring Boot, ReactJS, MySQL, NoSQL, AWS/SQS/Lambda/S3, Azure DevOps, CI/CD, Jira). This workflow automation platform with integrated clinical decision support optimizes patient health through value-based care incentives utilizing EHR and HL7 data through Mirth Connect and our analytical data warehouse with data directly from payers.• Full-stack development using React.js with hooks for efficient, functional component-based UI. Designed and implemented REST API services using Java (Spring Boot), Hibernate ORM, MySQL, NoSQL databases, and Python. • Empowered and mentored the CareEmpower team, leveraging technical expertise and collaboration with external teams to achieve a 17% improvement in bug resolution times.• Championed code quality by reducing bug recurrence through root cause analysis and code reviews.• Contributed technically with the development team by coding new features (Java, Spring, SQL, Hibernate, React) as well as participating in user story refinement and software design meetings.• Increased team productivity by 8% by automating repetitive tasks using Python.
  • Cognitive Medical Systems, Inc.
    Senior Software Engineer
    Cognitive Medical Systems, Inc. Dec 2013 - Feb 2019
    San Diego, Ca
    • Led an Agile web application development team for the Defense Health Agency’s Legacy Program Integration project to enhance clinical decision support systems, including the Resource Capacity Simulator and Cohort Identification Service. Optimized VA mental health resources using GWT, REST services, NoSQL, MongoDB, Git, Drools business rules, and OptaPlanner. Deployed the project on AWS servers using Docker containers. • Designed and implemented an API Test Harness to verify the integration of business rules with an external third-party server via a SOAP API. Developed a visual block-based code editor for domain experts to create test scenarios through drag-and-drop functionality.• Contributed to the open-source HAPI FHIR server code base, a Java implementation of the FHIR standard for exchanging healthcare information electronically. Enhanced the server with push subscription API features. https://github.com/hapifhir/hapi-fhir/commits?author=javajeff• Developed the Assertional Knowledge Editor, enabling non-technical clinicians to quickly find and create RDF assertions using terminologies such as SNOMED, LOINC, RxNorm, and custom value sets.
  • Digital Think Media
    Software Architect
    Digital Think Media Nov 2009 - Dec 2013
    San Diego, California, United States
    • Architected, designed, and developed two e-commerce websites, leading a US and offshore team to deliver robust and scalable solutions.• Designed and developed a web interface using JSP/Ajax/jQuery/JavaScript and integrated with Wordpress/PHP.• Configured a highly scalable AWS infrastructure including EC2 instances, cloud database (Amazon RDS), Amazon DynamoDB, load balancer routing, and auto scaling groups.• Developed a SQL database schema for a product catalog, ensuring efficient data storage, retrieval, and integrity.• Successfully authored and filed a provisional patent on the methods and systems for product ranking algorithms. • Designed the application architecture for a product cataloger with JAX-WS, HTTPClient, Amazon Product Advertising API, PriceGrabber API, and JPA for product data management.• Created in-house search engine marketing tools, enabling efficient bidding on highly targeted long-tail keywords.
  • Bae Systems
    Principal Software Engineer
    Bae Systems Jun 2002 - Oct 2009
    San Diego, California, United States
    • Developed mission-critical desktop and web applications for a Global Fortune 500 company, ensuring high performance and reliability.• Engineered an Ajax client using DWR and YUI for federated queries, integral to an $80 million proposal. Integrated federated query capabilities via JBoss ESB and XSL transformations.• Pioneered a high-resolution image viewer using the Google Maps API for an enterprise geo-positioning Spring Web Flow JSF application. The innovative approach garnered attention within the defense community.• Developed comprehensive software architecture and design documentation using UML, incorporating design patterns to enhance system modularity, reusability, and maintainability.• Designed and developed a knowledge map visualization and navigation tool with semantic web search and alert capabilities in a JEE system using web services, JMS, SQL, Oracle, and XML. Created the knowledge map generator, earning a Chairman’s Bronze Award for Innovation.• Demonstrated the Knowledge Broker solution at seven trade show conferences, showcasing its capabilities to industry professionals and stakeholders.

Jeff Chung Skills

Software Development Software Engineering Java Java Enterprise Edition Software Design System Architecture Agile Methodologies Object Oriented Design Databases Unix Uml Web Services Soa Sql Mysql Systems Engineering Xml Html Jquery Open Source Oracle Spring Clearcase Scrum Distributed Systems Centos Osgi Javascript Web Applications Web Development Enterprise Architecture Cloud Computing Unit Testing User Interface Design User Experience Representational State Transfer Enterprise Software Javaserver Pages Linux Json Bootstrap Amazon Web Services Docker Products Angularjs Tomcat Mongodb Jboss Application Server Cascading Style Sheets Maven Solr Drools Automated Software Testing Code Review Git

Jeff Chung Education Details

Frequently Asked Questions about Jeff Chung

What is Jeff Chung's role at the current company?

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What schools did Jeff Chung attend?

Jeff Chung attended University Of California San Diego.

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Jeff Chung has skills like Software Development, Software Engineering, Java, Java Enterprise Edition, Software Design, System Architecture, Agile Methodologies, Object Oriented Design, Databases, Unix, Uml, Web Services.

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