Dewayne Hafenstein

Dewayne Hafenstein Email and Phone Number

Principal Solution Architect @ AT&T
Leonard, TX, US
Dewayne Hafenstein's Location
Leonard, Texas, United States, United States
Dewayne Hafenstein's Contact Details

Dewayne Hafenstein personal email

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About Dewayne Hafenstein

Chief architect, Principal Architect, Principal Solution Architect, team leader, manager of architecture team, engineer and technician working on design and implementation of complex distributed object systems using web, CORBA, and EJB. Experience includes relational database design, NoSQL (Cassandra), object oriented analysis and design, system architectures for high performance and high scalability mission critical enterprise systems, CASE (Computer-Aided Software Engineering), Enterprise Application Integration (EAI) and B2B systems, WebLogic, WebSphere, JBoss, Jetty, XML, and messaging. I've been working in cloud technologies for several years now (4+). A member of the technology standards team specializing in CI/CD, Azure DevOps, pipelines, deployment of custom templates using Packer and Terraform, and using Jenkins. Certified in Azure fundamentals, and experience with AWS, Apache CloudStack, and OpenStack. team member to set up and deploy on-premise cloud using Apache CloudStack, specializing in helping the development teams use CloudStack. Involved in consulting, training, and mentoring to the development teams on custom templates using Packer, deployments using Terraform, and Immutable Images implementations. Specialties: Eclipse, Maven, JUnit (3, 4, and 5), I18N, OOA, OOD, UML, Java, JEE (EJB, Servlet, JSP, JMS, JNDI, JDBC, JAXP, JAXB, JCA, JTS), XML, XSLT, XPath, Json, C++, Pascal, PL/I, Cobol, System/370 and S/390 BAL, ORM, RDBMS, NoSQL, and ERD, CORBA, RMI, Expert systems, AI, OS/390, MVS, and zOS, Windows(NT, 2000, XP, Server 2003, 7), Linux

Dewayne Hafenstein's Current Company Details
AT&T

At&T

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Principal Solution Architect
Leonard, TX, US
Dewayne Hafenstein Work Experience Details
  • At&T
    Principal Solution Architect
    At&T
    Leonard, Tx, Us
  • At&T
    Principal Solution Architect
    At&T May 2011 - Present
    Dallas, Tx, Us
  • At&T
    Principal Technical Architect
    At&T Apr 2011 - Present
    Dallas, Tx, Us
    Member of corporate architecture team responsible for all containers and frameworks. Design, develop, support, educate, and train on frameworks and technologies including Cloud, BPMN, Microservices, CI/CD, application servers, logging, I18N, messaging, and much more.Designed and developed container to allow multiple independent deployments of Apache Camel routes. Container can run embedded or stand-alone, and provides dynamic management and deployment. Used for corporate message mediation gateway for direct interfacing with partners and vendors. Took over a research project called IDP and productized it, driving it all the way to production. The project is an ALM framework that ties together all of the tools involved in software design, construction, testing, planning, project management, deployment, and support. The project was in danger of being cancelled but was turned around and hugely successful within 6 months.I am the lead technical architect that designed and documented the CDP product. CDP is a tool that allows application development teams to describe their application and its infrastructure requirements using a declarative, model-based approach, and then to deploy that model across any supported IaaS provider (OpenStack, AWS, VMWare, BareMetal, Azure, etc). Many of the technologies that were developed as part of CDP have now been moved to open source. One major component that I designed and wrote most of is the Provider Abstraction Layer, which can be seen here: https://github.com/att/AJSC/tree/master/cdp-pal Another framework component that is nearly all mine is EELF (Event and Error Logging Framework), and can be seen here: https://github.com/att/EELF. We will be moving more of CDP to open source soon. CDP is also evolving to support microservices using Docker containers and Kubernetes clusters. I am responsible for training and documentation on these extensions, as well as mentoring, consulting, and customer technical onboarding.
  • Columbia Ultimate
    Chief Architect
    Columbia Ultimate Oct 2003 - Apr 2011
    Vancouver, Wa, Us
    Develop and champion the strategic vision and design of all Columbia Ultimate products; establish product features and roadmaps; mentor development, QA, and implementation teams; and manage the architecture and DBA teams.Accomplishments• Flagship product using proven N-tier J2EE patterns and concepts, including SOA, Service Locator, Adapter, Connector, Session Façade, Assemblers, Transfer Objects, Value List Handler, and other patterns, as well as ORM.• Framework for desktop client such that the client user interface is constructed dynamically based on the user’s role and security profile as well as installed options.• Design staff training on UML modeling, OOA and OOD, XML, XML schemas, XSLT, XPath, and XSL-FO.• Development, QA, support, and documentation staff training on reading UML, ERD, and XML Schemas• Training on UML, EJB, JNDI, JDBC, RMI, XML, and other technologies to development teams• Communications gateway framework which abstracted interfaces to external service providers from the core product• Developed prototypes to demonstrate proper uses of XML, JCA, JCR, JMS, XSL-FO, XSLT, and other technologies• Product build system using ANT and custom tasks• Patch generation and application facility• Gateway framework for dynamic pluggable service provider interfaces• PBX and telephony dialer systems interfaces
  • Borland
    Principal Consultant
    Borland 2002 - 2003
    Newbury, Berkshire, Gb
    Senior consultant on J2EE technologies, responsible for courseware development, delivery, mentoring, and consulting services on Java and J2EE technologies. Consulted and trained on the used of UML for design of enterprise applications. Consulted and trained on using Borland products, including JBuilder and Together-J.
  • Crossvale, Inc
    Principal Consultant
    Crossvale, Inc 2000 - 2002
    Develop and deliver J2EE and EAI courseware; provide consulting services; mentor other team membersAccomplishmentsCreated advanced training courseware on J2EE, XML, CORBA, Java, C++, and EAI (Enterprise Application Integration).Consulted on development practices, UML modeling, relational modeling, system architecture, and best practices to many customersTrained and mentored junior members on J2EE and JDBCTrained on installation, tuning, deployment, and support of applications on highly scalable and secure systems using load balancers, Apache web servers, and WebLogic clusters.WebLogic certificationsWebMethods certificationRecognized as one of the top BEA WebLogic trainers and consultants
  • Sabre, Inc
    Chief Architect
    Sabre, Inc 2000 - 2000
    Design and implement updated ticket pricing engine for Category 35 rulesAccomplishmentsWeb interface for travel agents to purchase and resell ticket blocks on WebLogicSOA interfaces for cat 35 processingATPCO data loader to load cat35 engineTrained development staff on Java, J2EE, and XMLHigh performance, highly scalable, secure infrastructure using load balancers and WebLogic clusters
  • Bank Of America
    Gcib Technical Architect
    Bank Of America 1998 - 2000
    Charlotte, Nc, Us
    Provide technical leadership and consult with development groups within the bank on XML, Java, J2EE, SCM, and C/C++.AccomplishmentsCoordinated and trained development groups on the use of XML and XSLTConsulted on EJB and Web development and best practicesManaged Y2K lab and coordinated Y2K testing
  • Texas Instruments
    Smts (Senior Member Group Technical Staff)
    Texas Instruments 1991 - 1998
    Dallas, Tx, Us
    Senior engineer, then elected to Member, Group Technical Staff for TIS (Texas Instruments Software), and later to Senior Member, Group Technical Staff. Design, develop, and support CASE-tool IEF, Composer, and COOL:Gen screen generators and runtime components. Instrumental in design and support of application code generators from CASE system encyclopedia (model). Designed, developed, and supported advanced user interface code generator and run time components for IEF and Cool:Gen for use on IBM 3270 series devices. Designed and developed meta-model based portable generation implementation for remote generation of code on different target platforms. Submitted and registered five software patents.
  • Eds Group
    Senior Software Systems Engineer
    Eds Group 1984 - 1991
    Us
    Senior Systems Software Engineer

Dewayne Hafenstein Skills

Xml Java Uml Software Development Jms Object Oriented Design Spring Weblogic Jsp Jdbc Ejb Tomcat Ant Spring Framework C++ Servlets Cobol Corba Ooad Rmi Jndi Xslt Xpath Java Message Service Unified Modeling Language Maven Architecture Agile Methodologies Ibm Db2 Service Oriented Architecture Technical Leadership Sql Web Services Representational State Transfer Websphere Requirements Gathering Java Enterprise Edition Soap Cloud Computing Computer Networking Microsoft Azure Network Administration

Dewayne Hafenstein Education Details

  • University Of Arkansas
    University Of Arkansas
    Computer Science Engineering + Electrical Engineering
  • University Of Arkansas
    University Of Arkansas
    Engineering Computer Science
  • University Of Arkansas
    University Of Arkansas
    Computer Engineering

Frequently Asked Questions about Dewayne Hafenstein

What company does Dewayne Hafenstein work for?

Dewayne Hafenstein works for At&t

What is Dewayne Hafenstein's role at the current company?

Dewayne Hafenstein's current role is Principal Solution Architect.

What is Dewayne Hafenstein's email address?

Dewayne Hafenstein's email address is de****@****att.com

What schools did Dewayne Hafenstein attend?

Dewayne Hafenstein attended University Of Arkansas, University Of Arkansas, University Of Arkansas.

What skills is Dewayne Hafenstein known for?

Dewayne Hafenstein has skills like Xml, Java, Uml, Software Development, Jms, Object Oriented Design, Spring, Weblogic, Jsp, Jdbc, Ejb, Tomcat.

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