David Stellar Email & Phone Number

Denver, Co, Us

Denver, Colorado, Us

Denver, Colorado, Us

Denver, Colorado, Us

- From inception, grew team of engineers and led team in design and implementation of offering for large projects. We took this greenfield project from $0 to $36mm in annualized run-rate revenue- Team OKR wins - pivoted to Kanban, optimized flow, improved cycle time, increased unit test coverage, improved cross-team collaboration, revamped QA process, reduced story sizes, enhanced monitoring process, strengthened arch doc process, eliminated superfluous meetings, minimized context switching, trained new teams across vertical, attacked tech debt, increased pre-prod stability- Led effort to revamp interview process, sold new process to recruiting, eng directors & VPs, trained eng staff, and rolled out new process to back-end candidates- Led SLI / SLO / SLA and error budget policy construction and definition of large projects vertical- Led systems design of Angi rebranding effort for large projects vertical, including all matching logic- Founded, organized and led leadership guild with ~ 50 members. Topics included building trusting relationships, effective meetings, delivering feedback, how-to interview, effective teaching, leading in crisis, leveraging feedback, recruiting talent…etc- Founded and served as president of HomeAdvisor sponsored Toastmasters club to advance leadership skills for myself and others- Contributed to and supported several race / diversity / inclusion efforts- Implemented and ran weekly demos for large projects vertical - Constructed and led training classes for large projects vertical, including core matching- Taught weekly metrics monitoring / debugging onboarding classes for new hires- Drove culture shift across vertical to involve engineering in product ideation

Denver, Colorado, Us

- Led design and development of event based, consumer / pro matching system using Kafka to capitalize on lost lead revenue and provide customers with a better experience- Led team of engineers to investigate and fix company-wide monetization issues. Gave senior leadership and CTO daily updates until we course corrected - Helped refine on-call process for greater accountability while providing support to on-call engineers- Officially mentored mid-level engineers to help propel them in their careers. Topics included communication skills, SOLID principles, Spring, AOP, concurrency, design patterns, algos, javascript basics- Was acting manager for comms team when team manager was out for 5 weeks- Led design and development of the HomeAdvisor messaging, Facebook integration- Participated heavily in interviewing engineers and managers- Organized HomeAdvisor sponsored tech talks

Alpharetta, Georgia, Us

- Led design and development of major promotion optimization features including promo-placement, promo-building, and promo-management- Parsed BRDs and generated feature stories for future releases- Interfaced with product and design team to flesh out stories and requirements- Interfaced with API and science team to coordinate contracts and solutions- Handled git branching to maintain dev and release branches- Mentored less senior devs to help them become more valuable contributors- Facilitated pair programming for cross team learning- Configured front-end JS testing framework using Karma and Jasmine. Leveraged Jenkins for continuous integration of tests- Implemented application wide grid system using ng-grid- Improved web app performance by profiling and reducing AngularJS inefficiencies- Wrote Node.js services using Express that interfaced with MongoDB for Social Commerce product- Led Raley’s client integration and worked with Raley’s developers to integrate social commerce product on their site- Wrote Grails services, controllers, models, GSPs, CSS to provide merchants with Social Commerce analytics

- Developed web scraper to ingest product data. Developed cross domain Ajax requests with JSONP to synchronize shopping cart items across different domains- Developed self-serve web application using Grails allowing retailers to build flash sales, sweepstakes, and other promotions. Created customizable features (e.g. headers, footers, confirmation pages & emails, share buttons, and timers). Enhanced user experience by leveraging jQuery plugins and Ajax support. Ensured clean views by templating with Grails partials and layouts, writing custom Grails tags, and utilizing Javascript libraries such as handlebars. Other libraries included CKEditor, ColorBox and Dojo- Configured Grails database migration plugin, and upgraded plugin to use needed forked repository. Executed diffs between GORM classes and databases, and applied generated change sets for synchronization. Wrote stored procedures to facilitate data migration- Built internal shopping cart flow using Grails, Sass, Susy, & many other technologies- Developed client-side pagination, category support, and color sorting for flash sales. Used jQuery Tools for UI enhancements and Ajax to update product grid asynchronously- Identified and fixed bugs for promotions through Facebook- Implemented persistent image sorting with jQuery UI; Added Javascript validation via jQuery- Maintained cloud servers using Amazon's EC2 and RDS web services- Coordinated automatic deployments with Jenkins SSH plugin. Coded and configured functional Geb tests to trigger upon auto deploy

Atlanta, Ga, Us

- Led development of customer notification system. Redesigned and developed application to replace former ESP for greater reliability and real-time email tracking. Key technologies included Seam, FreeMarker, JSF, Servlets, and Jboss- Led B2B gift card application development based on Apache OFBiz. Developed code for dynamic legal agreement modifications. Utilized widgets, FreeMarker, and decorator pattern for views. Used entity engine and Control Servlet for persistence and flow control- DAO and Factory patterns to facilitate login service refactoring- Developed web services to support data synchronization and transaction processing application using Spring and CXF. Key technologies/patterns included JdbcTemplate, DAO, and DI- Developed components, transformers, flows, and exception strategies for B2B application using MULE ESB. Transformed and connected files and messages employing various endpoints including file, SMTP, FTP, and JMS- Enhanced automated provider response system Servlet to support Regex based triggers- Developed standalone program that transforms XML receipts into HTML receipts- Solved performance bottlenecks using IBM Rational AppScan and JProfiler

Atlanta, Ga, Us

- Leveraged Canoo WebTest, XPath, and Groovy for automation of smoke, regression, validation, and integration tests- Wrote test suite using WebTest, XPath, and Groovy for our Wireless platform which tested integrations with Target, Verizon, and T-mobile- Coded monitoring tests with Canoo and Ant ensuring proper backend activity of our platform- Utilized WebTest and Groovy to write performance test for flagship postpaid services application generating graphical results via Google Chart API- Trained QA staff on manual and automated testing

- Solved basic WebLogic Server cases- Analyzed and managed incoming WebLogic, Java, and Tuxedo support cases- Assigned engineers cases based on workload and skill set- Acted as liaison between India technical support and Denver team