Self-driven, senior-level software developer with experience in full-stack development of custom data-driven software applications. Authored 50+ web-based, mobile and distributed client-server applications along with 30+ large relational databases. Takes ownership and responsibility for delivered software while being easy to work with amongst team members and retaining focus on tangible, efficient results.Capabilities Summary• Web development using C#, ASP.Net, Razor, Blazor, ColdFusion, IIS• App development for Windows, Android, iOS, Mac, using WPF, Xamarin, WinUI, MAUI• Web services with C#, .Net, .Net Core, Azure, Entity Framework, REST, MVC, MVVM, JSON• Web design using HTML, CSS, JavaScript, jQuery• Database design and development in SQL Server, Oracle• Project planning and source control via Git, TFS, Azure, CI/CD• Video game development for iPhone, iPad, Android, PC, Mac using Unity3D and C#• Project management, object-oriented development, mentoring, code documentation, product ownership, Agile methodology, task estimation, breakdown of complex logic into understandable concepts, team collaboration, code reviews, business analysis, troubleshooting, requirements gathering, refactoring, unit testing• Network+ certification, June 2010• Inactive Secret clearance, Aug 2013
Perceptive Pumpkin Productions, Llc
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Founder, Lead DeveloperPerceptive Pumpkin Productions, Llc Feb 2012 - PresentFairfax, Va-Perform software and network consulting for individuals and small businesses-Write software, scripts and services for Twitch.tv integration, allowing viewers to interact with live streamers and video games, using javascript, C#, OAuth.-Create original, unique oil paintings and other illustrations. Engage in online and local art sales.-Created and released "Villagers Vs. Vampire", a mobile puzzle game, on iTunes, Google Play, Amazon Appstore, and the web. Was responsible for all design, coding, art assets, and marketing.
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Senior Software DeveloperTriplecyber Corporation Feb 2020 - Apr 2023Vienna, Virginia, United States• Implemented applications, mobile apps, web services and APIs that comprised the TripleCyber identity infrastructure. Full stack included .Net Core, .Net 7, C#, Entity Framework, Xamarin, MAUI, WinUI, SQL Server, Azure DevOps, OAuth, HTML, CSS and JavaScript. Worked directly for Chief Technology Officer.• Integrated identity verification, encryption / decryption / signing of files, login authentication and Multi-Factor Authentication (MFA) into enterprise software. Setup, maintenance and administration of IIS and e-mail servers.• Created internet registrar site (domains.triplecyber.com) for registering and managing web domains and email. Written in ASP.net, Razor, Blazor with C# API, .Net 6 and SQL Server.• Participated in Agile stand-ups, sprints, Git source control, tracking of tasks in Azure Boards. -
Senior Lead DeveloperEcs Limited Sep 2016 - Feb 2020Chantilly• Senior Lead Developer on 10 large projects to convert business-critical legacy Windows programs written in FoxPro into modern, web-based applications with C#, .Net, .Net Core, Entity Framework, SQL Server, jQuery, HTML 5, CSS, Bootstrap, Backbone.js, RabbitMQ, TFS, Git. Meticulously documented functionality of legacy program UI and code to ensure comprehensive coverage of features and systems integrations when developing modernized replacements.• Designed and supported internal applications for 60+ offices across the US. Maintained legacy ColdFusion and Windows WPF applications.• Created scalable, RESTful web services, APIs and reporting tools used by the business to automate and facilitate invoicing, time tracking, payroll, engineer field reports, scheduling and personnel management.• Supported Agile processes, daily Scrums, 2-week sprints, TFS boards, participated in extensive code reviews and pull requests. -
Lead Software DeveloperCamber Corporation Sep 2013 - Aug 2016Falls Church, Virginia• Lead developer on a team of 5 senior developers within the DoJ Executive Office of Immigration Review. Upgraded applications used by immigration courts across the US to track over 5 million case records. ColdFusion 9 / 10 / 11, HTML 5, JavaScript, C#, Fusebox and SQL Server.• Initiated new RESTful web services using C#, .Net 4.5, JSON and Entity Framework 6.• Engaged in complete life cycle development, code reviews, unit testing, software design documentation and QC support. Reported directly to senior management. -
Senior Software DeveloperKratos Defense And Security Solutions Apr 2011 - Sep 2013Alexandria, Virginia, United States• Developer for the NeuralStar enterprise network management software, a COTS product that processes and organizes 1000s of network monitoring data points. Stack contained C#, SQL, ASP.NET, MVC3, AJAX and SQL Server 2008 / 2012.• Improved core NeuralStar API code, report generators, SQL, data maintenance, user interfaces. • Collaborated with senior management to derive new product features, market analysis, and technical direction. Participated in daily Scrum stand-ups, utilized Agile and rapid prototyping.
Derek R. Education Details
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Computer Science
Frequently Asked Questions about Derek R.
What company does Derek R. work for?
Derek R. works for Perceptive Pumpkin Productions, Llc
What is Derek R.'s role at the current company?
Derek R.'s current role is Founder and Lead Developer of Perceptive Pumpkin Productions, LLC.
What schools did Derek R. attend?
Derek R. attended Radford University.
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Derek van Vliet
How Do You Aggregate All Of Your Investment Data? Let Us Explain How We Can Put You In The Analysis Business.Newburyport, Ma2iclautos.com, burgiss.com -
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