David Hainlin's Email Addresses & Phone Numbers

Principal Engineer @ Teladoc Health Dallas/Fort Worth AreaOwner @ Intraspective Corporation Software development consulting Richardson TexasAssociate @ projekt202 Ruby on Rails development. From February 2015 to May 2015 (4 months) Dallas/Fort Worth AreaSoftware Developer @ Onlife Health Development of internet products using Ruby on Rails in a distributed, agile team. Working through full stack with emphasis on...

Principal Engineer @ Teladoc Health Dallas/Fort Worth AreaOwner @ Intraspective Corporation Software development consulting Richardson TexasAssociate @ projekt202 Ruby on Rails development. From February 2015 to May 2015 (4 months) Dallas/Fort Worth AreaSoftware Developer @ Onlife Health Development of internet products using Ruby on Rails in a distributed, agile team. Working through full stack with emphasis on test driven development of Rails 3 stack to replace retiring applications related to delivering wellness programs. Very mature development shop. From May 2014 to January 2015 (9 months) remoteConsultant @ Geoforce Inc Ruby development on rapidly expanding startup providing international asset tracking (GPS) for oil/gas and fleet tracking. Second developer added to rescue the initial implementation and deployment. Developed and deployed billing features for back office staff to significantly automate invoicing. Championed and developed asynchronous processing using Redis and Resque to improve scalability and system elasticity. Implemented various mechanisms to gather metrics about the complex message processing and enrichment infrastructure. From September 2009 to September 2012 (3 years 1 month) Dallas/Fort Worth AreaConsultant @ Doublewide Labs Ruby on Rails development and maintenance of the popular invoicing web application Blinksale. Led refactoring and initiated implementation of high availability site. Developed new billing and backend processes to ensure more accurate and reliable billing. Completed many improvements leading to significant security and performance gains. Supported web design team in implementing fresh new skin for the site. Provided customer support (Zendesk) and support in new feature planning. Implemented Rails 2 stack with RSpec and Cucumber tests. Worked to simplify older PayPal integration by introducing ActiveMerchant. From September 2009 to March 2010 (7 months) DallasArchitect @ Nokia Lead developer for the Dallas Innovation Lab - a virtual team specializing in Ruby on Rails development using agile (Scrum) practices. Led the development on over a dozen intranet applications using Rails hosted on VMWare. Developed custom gems and generators to enable the team to quickly generate Nokia intranet compliant apps in minutes. Over 100 blog posts, screen-casts and presentations per year to support Rails, and agile methods. Initial Scrum Master on Nokia Agile steering committee. Developed robust development and deployment capabilities using Capistrano and Passenger. Promoted test driven development using RTest, RSpec, Shoulda, Cucumber, JMeter and Selenium. Set up continuous integration using CruiseControl.rb. Established Innovation Lab landscape including single sign-on (CAS), Memcached, SwitchIP, Passenger, MySQL, Apache. Established innovative ways to use internal wiki's to produce burn-down charts and to track stories and tasks on our agile teams. Developed a prototype video transcoding service using Rails. From July 2005 to July 2009 (4 years 1 month) Dallas/Fort Worth AreaConsultant / Architect @ Verio Provided development expertise for next generation Operations Support System (OSS) project. Integrated Siebel CRM, Micromuse Netcool/Precision, and custom C# web services on mixed Unix and Windows platforms. Developed web services (.NET) and custom XML transformers such as an XSLT cache. Developed Java (Axis) web services and clients for bi-directional integration between .Net and Micromuse. Supported requirements process and high availability architecture design in Dallas and in Tokyo. Developed testing framework (Junit/Ant) for Netcool and Impact testing. Developed Struts based administration application for managing events. Highly distributed team environment (Japan/Dallas) using SourceForge, CVS, in an agile/XP development style. From September 2003 to February 2004 (6 months) DallasConsultant @ SEACOR Holdings Architect, J2EE development mentor and project lead on custom Ship Crew Scheduling and Charter applications under new Oracle 11i financials rollout. Tight integration with Oracle HRMS, AR and GL modules. Responsible for all aspects including analysis, design, development, and production rollout. Integration with domestic/international payroll and accounts receivables. Delivered first phase (over 450 java classes) into production in 10 weeks by utilizing system architected on Jakarta Struts and Torqe. Deployed on Solaris based OC4J platform. Distributed development using Ant/Junit and CVS. Test driven development and J2EE-lite/Struts frameworks yielded exceptionally low defect rates and very high productivity. Extensive work with international teams yielded in a blended US/International product. From 2002 to 2003 (1 year) Dallas TX / Morgan City LAConsultant @ TXU Architect and J2EE/OO mentor to Java team developing Procurement and Warehouse management system. This system provided a successful bridge from the mainframe (back end) to a new web based delivery vehicle to greatly automate and streamline the warehouse and distribution processing at TXU. Development platform was WebLogic on NT/AIX. Managed business modeling, requirements development and UML modeling. (Rational/Popkin System Architect/ClearQuest). Developed authentication gateway (J2EE/Weblogic) to provide WWW access to internal mainframe applications. Managed development of test/build environment using Ant and Junit. Other technologies included messaging middleware/MQ Series, PVCS, Struts, Ant, JDOM, Junit, Tomcat, SOAP and Rational. From 2000 to 2002 (2 years) Dallas/Fort Worth AreaConsultant @ FedEx Integrator on advanced logistics and inventory management system. Integrated legacy Enterprise Java Beans system with SAP R/3 and Advanced Planning and Optimization including the business data warehouse and business intelligence products. As integration lead, organized other KPMG and SAP consultants, developed project plans, developed system requirements, and conducted architecture trade studies. Developed Java based B2B interfaces (WebMethods) using XML as the payload. Worked extensively to size and estimate system for production environment (Sun E10K/EMC). Developed and integrated communication between SAP products and EJB system (ActiveSoftware, WebMethods, WebLogic). Requisite Pro used for extensive requirements analysis. From September 1999 to May 2000 (9 months) Dallas/Fort Worth AreaContractor @ Applied Teravision Object oriented analysis and design (UML, Rational Designer Suite) of federal land asset management system. Refactoring existing design into a component based architecture using Java beans and the Java Servlets. Coordinating development of use cases, object models, and collaboration/scenario diagrams. Working closely with Department of the Interior personnel to develop a business model for their current workflow processes. Many activities with data transformation and loading of BAI information and data sources. Worked with Smalltalk and Java development teams. From March 1999 to September 1999 (7 months) Addison, TexasArchitect @ Citigroup Provided system engineering and software architecture expertise as senior software architect for next generation distributed financial systems for Citicorp. Strong participant in development of internal software and systems engineering processes to support upcoming SEI level 3 assessment. Tailored many KPA's for J2EE software development and assisted SQA and project management organization achieve SEI Level 2 within 9 months. Designed and prototyped dynamic virtual banking middleware technologies including distributed two-phase transactions (Encina), remote procedures (DCE), WEB (HTML, XML, Java/servlets/RMI, CGI, Perl, Oracle), security (DCE, certificates), code synthesis (customized IDL and C++ generators), and messaging (MQ Series). From 1996 to 1999 (3 years) Southlake, TexasConsultant @ NEC Corporation Provided OMT and Booch object oriented analysis and design mentoring for large scale ATM network management system. Provided technical leadership and development of distributed multi-tiered ORBs (C++) in OSP and CORBA. Designed and deployed CMIP/FTAM based tech stacks into ATM switches. From May 1994 to October 1996 (2 years 6 months) DallasArchitect @ Texas Instruments Provided OOA/OOD architecture (Shlaer/Mellor) and team mentoring for an advanced mission planning system. Strong emphasis on casetools (Teamwork/Interleaf integration), and creating and enabling a multi-functional team. Prototyped a C++/Ada based mission planning tool to manipulate complex 3D models. Other duties included: C++/LISP development management, SEI software process development, transition of real-time embedded AI technology into production programs. I also managed eleven member research staff and conducted customer briefings. I did extensive proposal development and systems engineering/architecture design. From May 1991 to May 1994 (3 years 1 month) Dallas/Fort Worth AreaUnit Chief @ McDonnell Douglas My first post college job. I was promoted from associate engineer to lead engineer within 5 years and to unit chief within 8. I worked with some of the most talented teams I've ever seen and was mentored by the absolute best engineering manager I know of. Fantastic incubator experience. Hardware design, artificial intelligence, flight testing my own avionics designs, working with directors to form corporate centers of excellence, mentoring top notch interns, leading multi million dollar research programs - in two words - dream job. From 1983 to 1991 (8 years) Greater St. Louis AreaDirector of Engineering @ Teladoc Health From August 2015 to January 2019 (3 years 6 months) Lewisville, TexasSenior Consultant @ The Container Store Rehosted external "Stands For"​ blog to Rails 4.2 using Prismic.io, Foundation, Coudinary, Disqus, Smugmug and Memcached on Heroku.http://standfor.containerstore.com/ From February 2015 to May 2015 (4 months) Dallas/Fort Worth Area | RemoteConsultant @ Texas A&M University Evaluated the processes and development approaches used by an Information Technology development group developing customized web-fronted, mainframe-backed applications for the university. Provided recommendations on iterative process, agile analysis/design techniques and test driven development. Provided training in UML modeling especially with respect to gathering and communicating requirements/features and development details. Provided customized templates and processing scripts for developing team intranet (portal), XML based requirements documents, and release management. From March 2004 to March 2004 (1 month) College StationRuby on Rails Developer @ Rackspace Hosting Rails development on internal Proposal Manager application. Focus is on boosting performance as usage grows through stack upgrades, caching and background processing. Working with agile team to extend functionality of this key application. From October 2012 to June 2014 (1 year 9 months) remote