David Cassel Email & Phone Number

Downingtown, Pa, Us

Downingtown, Pa, Us

4V Services helps enterprise organizations to maximize the value of their MarkLogic investments, while applying an operations mindset to application development. We have a team of MarkLogic developers working with a variety of clients to address their Big Data needs. Client: Tech services business building a product on MarkLogic. Built NiFi flows for ingest and transformation; updated data model for MarkLogic; optimized queries. Client: Fortune 500 manufacturer. Building a data hub; optimized their reports to run 25% faster while fixing report-generation bugs. Introduced scripted testing to reduce errors. Apply correct indexes for best performance across TBs of data. Implemented NiFi flows, including building a custom processor.Client: a Fortune 500 biochem company. Working with the R&D department to prove out applications for a variety of departments, improving the availability of data while managing strict security requirements. My role is architectural guidance and some implementation work. Ingest data from SQL Server, Oracle, SharePoint.Client: Building materials wholesaler. Guide four developers in development of MarkLogic data hub.Client: Healthcare coordinator. Provide architectural guidance and mentoring to a team of developers. Implemented NiFi flows to load data to MarkLogic and run harmonization. Client: Publisher. Build NiFi flows and MarkLogic modules for a publishing application. Lead developer for a semantics-based POC. Client: a smaller company in the healthcare space. Through a small retainer contract, I provide answers to questions about how best to use MarkLogic. Building MarkLogic REST API extensions; scripting tests of XQuery code; optimizing queries; implementing custom NiFi processor; configuring NiFi flows. Earned MarkLogic 9 Developer certification in August 2019.

Villanova, Pa, Us

Spring 2018, Fall 2018: Teach the graduate Database Systems course. Updated the course materials to include NoSQL, along with relational databases. Fall 2017: Teach the undergraduate Data Structures and Algorithms course.

Burlington, Massachusetts, Us

Established a new MarkLogic Labs group building tools on top of the core MarkLogic Server, focusing on rapid, iterative development; close collaboration with the field; providing feedback to Engineering; and ensuring that the projects are in line with company direction. Projects have begun as open-source projects built in the field. Add features, fix bugs, create tests, write documentation. Projects:- Data Hub Framework https://github.com/marklogic/marklogic-data-hub- Smart Mastering https://github.com/marklogic-community/smart-mastering-coreContributing as developer and Scrum Master, using XQuery, JavaScript, Java, and Gradle.

Burlington, Massachusetts, Us

Expand the community of MarkLogic developers by introducing developers to MarkLogic, ensuring an easy on-ramp, and sustaining a vibrant community. Spoke at conferences and Meetups. Maintained the software, wrote and edited content for http://developer.marklogic.com, including code-heavy blog posts, tutorials, and recipes. XQuery, Server-side JavaScript, client-side JavaScript

Burlington, Massachusetts, Us

Resumed focus on architecture and implementation of proof-of-concept and demo applications to highlight MarkLogic's capabilities. Contributed to full-stack implementations, guided team-wide architectural approaches, and provided technical help to a variety of developers on and off the team. XQuery, client-side JavaScript, Node.js, CSS

Burlington, Massachusetts, Us

Promoted to manage a distributed team of employee and contractor software developers on the MarkLogic Vanguard team, building applications for the world-wide sales organization. Functioned as a Player/Coach, both managing the priorities and scheduling of application development activities and ensuring that milestones are reached, while also being a hands-on developer. Expanded the team by hiring nine new employees. Emphasized the use of new MarkLogic features and provided feedback to Product Management and Engineering. XQuery, client-side JavaScript, Node.js, CSS

Burlington, Massachusetts, Us

Built custom proof-of-concept and demo applications to demostrate MarkLogic's value to customer missions as part of the newly formed MarkLogic Vanguard team. I worked with the sales team to gather requirements and drive success for both customer and company.XQuery, client-side JavaScript, Node.js, CSS

Burlington, Massachusetts, Us

Worked as a post-sales consultant implementing custom solutions built on MarkLogic Server. This encompassed all aspects of the software development life cycle (requirements gathering, SOW creation, design, implementation, testing and deployment) using an Agile development methodology. Working closely with MarkLogic's professional services management team and sales representatives, created customer solutions on time and to specification to ensure customer success.XQuery, Java, client-side JavaScript, CSS

Bethesda, Md, Us

January 2008 - October 2009Architect, Developer, Scrum Master. Contributed to implementation of a social networking platform for the enterprise. Worked as a developer on Lockheed Martin's first open source release. Java, C#, JavaScript, PHP (WordPress customization)July 2004 - December 2007Project Lead and DeveloperProvided technical leadership and implementation for internal and customer projects based on natural language processing technology.

Founded a company building a site for social networking with a purpose: Get what you need. Share what you have. Organized a team of part-time developers and built a site on LAMP. I dropped out of graduate school to pursue this idea. Although it didn't work out, I learned a lot about both technology and business.Linux, Apache, MySQL, PHP

Paris, Fr

Developed, maintained, tested, and supported software connecting traders to markets. Service required to be high-performance and high-reliability. Used C++ to interact with various market protocols, including FIX, CMS, eCBoT.

Software developer for a little startup trying to build a converged communications device (telephony + video + VOIP).C++, Java

Bethesda, Md, Us

Develop natural language processing applications for government customers.C++

Computer Science

Ms, Computer Science

Bs, Computer Science

Diploma, Academics