Dave Largent Email & Phone Number

Coweta, Ok, Us

Coweta, Ok, Us

Projects & ConsultingProject: EHR Database Migration• Migrated medical Electronic Health Records database to new EHR specifications - Designed SQL slicing and export of 5.2 million records - Batch converted 442k Microsoft Word documents to PDF - Batch converted PNG files to TIF - Batch decompressed 4.4 million compressed image files - Identified and repaired database field data to file system inconsistencies - Caused exported data to conform to new EHR import format specifications - Collaborated with project engaged 3rd party vendors to identify requirementsTools and Technologies: SQL Server, SQL Server Management Studio, SQL, Microsoft PowerShell, .NET, Lead Tools libraries, VBScriptConsultation: Requirements and Technologies for Hollywood Media Startup• Consulted with Hollywood sourced online web comic startup - Identified high-level requirements - Translated high-level requirements into technical specifications - Presented technology options to artists, inventors, and investors - Made technology recommendations

Carrollton, Ga, Us

Executive SummaryDesign and development for full stack and full life-cycle multi-threaded Java / J2EE / JBoss / Oracle web application used for data management in medical research clinical trialsDetailed Work• Led and presented design option meetings for peer review• Led successful effort to resolve costly long-standing data storage in AWS S3• Led Scrum, code review, and QA review meetings• Presented end of development cycle feature demonstrations• Served as a trusted source to assist junior engineers in their professional development• Designed and developed features in common services platform layer• Designed and implemented time zone support features• Resolved complex upgrades of external dependenciesTools and Technologies: Java, J2EE, JBoss, EJB, Hibernate, Dependency Injection, Oracle, IntelliJ Idea, git, GitHub, Gitlab, Jira, Liquibase, SQL, Cucumber behavior-driven test, JUnit, AWS S3, Maven, Jenkins, Agile/Scrum, Confluence

Executive SummaryDesign, development, and project leadership for iOS (Mobile/iPhone/iPad) applications with Swift. Developed and published applications using Core Swift and reactive Swift (SwiftUI).Detailed Work• Led in concept, architecture, design, implementation, testing, publishing, and marketing iOS apps• Created ‘SpendWise – Plan, Shop, Smile!’ spending planner and shopping organizer• Created ‘Reccy – For fast referrals!’ an efficient marketing referral engine• Implemented bar code scanning• Implemented custom file types for share sheet• Designed and implemented persistence schema using Core Data• Applied lightweight, standard, and progressive Core Data migration• Applied Coordinator Pattern for event handling isolation• Integrated third party monetization, logging, metric reporting, and user feedback libraries• Developed views with SwiftUI Preview, Interface Builder, and programmatically• Applied Apple Human Interface Guidelines• Created marketing video and graphics• Produced clear and concise help documentation• Published beta applications for Ad Hoc Distribution and to TestFlight• Met with customers to gather usability and feature request feedback• Published production applications to the App StoreTools and Technologies: Swift, SwiftUI, XCode, git, Bitbucket, Core Data, Core Data Migration, Interface Builder, SQLite, XCTest, CocoaPods, Ad Mob, Cocoa Lumberjack, Crashlytics, Firebase, Google Analytics, Instabug, iOS, iPad, iPhone,Apple Human Interface Guidelines, Ad Hoc publishing, TestFlight, Agile

Kennesaw, Ga, Us

Executive SummaryDesign, development, and project leadership for full stack and full life-cycle multi-threaded web application for HVAC management services using Java and Web Technologies (Angular, JavaScript, Tomcat)Detailed Work• Led Scrum, code review, and QA review meetings• Served Scrum roles of Product Owner, Team Lead, and Scrum Master as needed• Led and presented design option meetings for peer review• Led and presented end of development cycle feature demonstrations• Served as a trusted source to assist junior engineers in their professional development• Developed UI, application, and database layer features for Web application• Developed feature for client-side specification of schema and data to retrieve from server• Identified and corrected client and server-side Tomcat and Java performance issues• Led a team to identify and resolve Angular performance issues• Upgraded custom Tomcat implementation to newer base Tomcat versionTools and Technologies: Java, Angular, JavaScript, HTML, CSS, JSON, Handsontable, Tomcat, JUnit, Mockito, IntelliJ Idea, SonarLint, Chrome Debug Tools, YourKit, VisualVM, Perforce, TeamCity, Windows, BACnet Specification, Rally Application Lifecycle Management, Agile/Scrum

Kennesaw, Ga, Us

Executive SummaryDesign, development, and project leadership for full stack and full life-cycle multi-threaded web and desktop applications for HVAC management services using Java and Web TechnologiesDetailed Work• Lead Engineer for Point Level Checkout, Conversion to BACnet Properties, Restrict Guest User Privilege• Served on research team identifying requirements and solutions for big data processing• Led Scrum, code review, and QA review meetings• Developed UI, application, and database layer for Web and Swing applications• Developed application layer API for use by UI and Tools teams• Developed application layer for Factory Downloader tool• Modified Add-On framework to prevent inadvertent automatic logout• Migrated 32-bit Java/JNI/C applications to 64-bit Windows and Linux• Added server-side retrieval of resource files when using custom controls• Developed communication software permitting server to talk to field controllers• Analyzed and significantly reduced application memory footprint for large databases• Resolved out-of-memory exceptions by fixing memory leaks and adjusting heap sizes• Added feature providing memory diagnostics through manual command• Rewrote software services to employ better service framework• Wrote caching component for Time Lapse Graphics• Applied Test-Driven Development• Implemented Spock, Mockito, and JUnit testing frameworks to automate tests• Presented JVM Memory Management: How it works and tips on tailoring heap sizes• Met with clients to identify and resolve software issues experienced only in the fieldTools and Technologies: Java, JSON, Swing, Python, Mockito, Spock, JUnit, Gradle, C, JNI, IntelliJ Idea, Visual Studio, YourKit, VisualVM, Perforce, TeamCity, SQL Server, MSDE, Access, Oracle, MySQL, PostgreSQL, Derby, DbVisualizer, PGAdmin, SQL Server Management Studio, Confluence, Gliffy UML, Windows, Linux, BACnet Specification, Rally Application Lifecycle Management (CA Agile Central), Agile/Scrum

Atlanta, Ga, Us

Executive SummaryDesign, development, and project leadership for full stack and full life-cycle desktop application for cellular network planning using C++ and JavaDetailed Work• Developed UI and application layer features• Developed configurable task flow automation component to simplify a complex engineering tool• Migrated 32-bit application to 64-bit Windows• Evaluated third party logging libraries for C++ and Java applications• Added C# enhancement to replace Crystal Reports with CSV file generation• Upgraded C++ expression evaluator extension for new version of Visual Studio• Fixed various defects in the JNI and C++ code• Applied standard template library (STL) containers vector, map, and queue• Applied various searching and replacing algorithmsTools and Technologies: C++, Java, C#, JNI, Crystal Reports, CSV, Borland CPPBuilder, Visual Studio, WinCVS, Windows, Jira, Waterfall

Us

Executive SummaryFull stack and full life-cycle software design and development for client-server software for asset management using C# and .NET Compact Framework on Pocket PCDetailed Work• Developed UI, application, and database layer features• Used the .NET Compact Framework running on the Pocket PC• Developed SQL Server CE database interface layer• Developed client-server components for data synchronization• Developed Web Service for data synchronization• Developed Visual Basic system configuration componentTools & Technologies: C#, Visual Basic, Visual Studio, Microsoft Web services, SQL Server CE, Oracle, Visual SourceSafe, Pocket PC/Windows CE, Rational ClearQuest

Executive SummaryFull life-cycle software design and development for desktop flight simulator using C++ and Visual Basic• Detailed Work• Made performance optimizations for flight simulator and operational flight program• Implemented socket communication to simulate ship-to-ship image transfer• Upgraded Visual C++ versions • Created software to artificially limit amount of available physical RAM• Created instrumentation for easy timing comparisons between programming constructs• Developed trainer UI menu elements and registry and process wrapper classes• Eliminated ActiveX control by incorporating into main body of trainer• Identified and corrected bad assembly code generated by C++ optimizing compiler• Used Windows Management Instrumentation to start/stop processes and services• Created customer installation packages• Worked within a team and directly with the customer• Coordinated software changes across teamsTools & Technologies: C++, Visual Basic, Visual Studio, ActiveBar API, ActiveX, InstallShield, VBScript, Windows API

Executive SummaryFull life-cycle software design and development for the F/A-18 multithreaded/multiprocessor/cross-platform/distributed data mission computer using C++Detailed Work• Converted assembly language mission computer software to object-oriented C++• Implemented subsystems in fuel efficiency, navigation, and environmental controls• Implemented persistence and data replication/distribution• Applied object-oriented analysis and design and the Unified Modeling Language• Applied design patterns: Strategy, Component Configurator, Abstract Factory, Facade, Adapter• Collaborated with physical teams, virtual teams, and customers• As an SEI Level 5 company, mature software processes were followed for developmentTools & Technologies: C++, Windows, VxWorks, PowerPC, OOA/OOD, UML, Visual Studio, ClearCase, Rational ClearQuest, Rose, Quantify, Purify, Code Wizard, DOORS, Sun Tools, Exceed, Unix, Tornado

Washington, D.C., Us

Executive SummaryFull stack and full life-cycle software design and development for three-tier client-server national mail transportation tracking software using C++ and JavaDetailed Work• Developed UI, application, and database layer features• Converted a portion of three-tier C++ client/server mail tracking software to Java• Created arrival/departure times applet using Swing• Developed servlets for database queries and updates• Applied MVC design pattern using custom document and modelTools & Technologies: C++, Java, MFC, Visual Studio, Windows API, ODBC, SQL, Oracle Server, JDBC Thin Driver, MVC, OOA/OOD, IIS, Apache, Tomcat, HTML, Internet Explorer, Netscape

Executive SummaryLeadership, design, and development for full stack and full life-cycle Windows and embedded software system for vending machine field programmer and configuration application using C++ and CDetailed Work• Developed applications from requirements gathering to post-production support• Developed UI and serial communications software for loading parametric data• Developed embedded software for loading parametric data to currency validators• Assisted as subject matter expert in infrared optical sensing applications design and component sourcing• Served as a member of the supplier management team to reduce our supplier base• Oversaw testing of optical sensing applications and software• Reduced optical circuit manufacturing defects saving the company >$100k dollars annuallyTools & Technologies: C++, C, MFC, Visual Studio, UI, Windows API, Motorola 68HC11 microcontroller, Nohau 68HC11 in-circuit emulator, Introl C compiler

Developed Visual Basic application for solving chemical equations.

Developed Visual Basic application for tracking component evaluations.