David Swearingen Email & Phone Number

Bethesda, Md, Us

Potomac, Maryland, United States

Part-time teaching in technology subjects including Scratch programming and electronics.

Washington D.C. Metro Area

After a career in software and systems engineering, I am now designing services to help high school STEM teachers integrate electronics, programming and robotics into their classrooms.

Corporate focal point for strategic and implementation activities pertaining to data analytics. Recent engagements include work with Cloudera Hadoop, Kafka, Flume, Hive and Samza.

Software engineer supporting data scientists. Current technologies include Apache Spark, Scala, Java and various web technologies on Linux/EC2. Work extensively on implementing and evaluating a variety of machine learning libraries and algorithms running on a Spark / Hadoop cluster. Specific focus is data correlation and similarity analytics using algorithms like K-means and Pearsons. High performance agile team that constantly seeks to improve its practices while challenging each team member to excel and learn.

Mclean, Va

Manage product integration engagements, participate in business development and other activities.

Washington D.C. Metro Area

Systems engineering, sales engineering and support, various partnership activities.

Technical team member developing solutions based upon CloudBase / Apache Accumulo, which is a "NoSQL" distributed datastore. Developed experience building full-text and other indexes on this columnar datastore, and working with n-grams and graph database principles. Wrote Java API with tests, ETL/ingestion, and conducted benchmarks.Software engineer on a team developing a web-based system based upon JavaScript, Java and MarkLogic (high-performance XML database). Extensive browser front-end experience using JavaScript and JQuery. XQuery and XSLT for transforming XML. Client-side GIS / mapping development using OpenLayers (mapping), and work with GPS data in XML. Maintenance of REST tier written in Java.

Team member on two consulting assignments utilizing Ruby on Rails, Java, Oracle, Grails, Adobe Flash and other technologies. Team leadership and technical mentoring of more junior developers. Worked on the ETL / data ingestion team for a complex mission-critical system with billions of records. Extensive client interaction and shaping of applications. Successfully fostered strong working relationship between disparate development and graphic design teams. Garnered leadership awards both from my client and my employer.

Agile software development with Ruby on Rails and other technologies. Cybersecurity.