Tim Paulus Email & Phone Number

Louisville, Co, Us

Louisville, Co, Us

Developed production IT infrastructure from ground up. Grew from simple beginning of "server in basement" environment to private cloud -- a virtualized environment in multiple, geographically separate, redundant data centers utilizing open source software combined with select commercial tools. Conceived and implemented processes to deploy, configure and maintain the private cloud in a highly automated manner. Heavy use of application and system monitoring to enable a proactive approach to maintenance and problem solving. Deployed NAGIOS for proactive monitoring, Puppet Enterprise for host automation and configuration management and Splunk for log analysis and alerting. Built a DevOps team to provide production and staging environment for enterprise wide applications and services to be scalable and highly available. Established processes for automation, maintenance, security, and quality assurance.Hardware infrastructure based on x86 server hardware (Dell, Fujitsu) interconnected by gigabit (Cisco, Brocade) networking with heavy use of VLAN for network partitioning and security. Hardware load balancers (Brocade) managed application loads among pools of application servers. The network was protected by firewalls (Cisco) and an open source intrusion detection system.CentOS operating system virtualized using KVM hypervisor provided stable virtualized Linux environment with no licensing costs.Legacy applications transactional database used PostgreSQL with SLONY-I for redundancy, availability and improved read scaling. Data warehouse also ran in same model. Next generation applications used MongoDB infrastructure, full use of sharded replicasets for complete fault tolerance.Applications were built on J2SE technologies using service oriented architecture. Applications ran in simple Apache HTTP/Tomcat Application server stack with ActiveMQ/JMS messaging queue.

Atlanta, Ga, Us

Develop prototype Struts/Tiles web application to support automotive dealer management software including integration with content management and discussion forum.Assist development effort for auto dealer management web application to manage inventory, purchases and sales. Primary effort involved an automatic update mechanism for distributed web application and dealer installation process.Developed and maintained web based auto auction software permitting auto dealers to participate in live auctions from remote locations. Struts web application displays list of sales and vehicles for purchase using JSP technology and JSTL/EL. JFC/Swing applet shows live video and audio of auction i progress allowing remote user to bid on vehicles.

Maintained various web applications. Applications were based on model-view-controller pattern and were implemented using J2EE Servlet and JSP technologies. Applications rely heavily on Oracle database.

Designed and implemented a web based reporting system. Design was based on model- view-controller pattern and was implemented using Apache Struts running on Tomcat. Other duties included maintenance work on JFC/Swing GUI application.

As two BellSouth companies merged, designed and implemented an order processing application to integrate the sales entry system of one company with the order fulfillment system of the other. Order data was received through a data feed, loaded into a database and then processed. Development was done using Java technology.Designed and prototyped a web based sales system for placing advertisements on a branded Internet yellow pages directory. Prototype incorporated model-view-controller design and was implemented using Apache Struts running on ATG Dynamo application server.

Designed and implemented a HTTP tunneling system for connecting client applications to servers. This system allowed data communications to pass through HTTP proxy servers and firewall applications and is ideal as a communications layer for distributed client applications.Designed and implemented an instant messaging system for a business directory application that allowed potential customers to communicate with businesses. The application runs within the context of a web browser and is built upon the aforementioned HTTP tunneling system.Implemented a method for updating web page views in a browser without submitting another HTTP request to the server. This technology allows web pages to continually update their contents as the data that forms the basis of the web page changes. For example, a web page that shows statistical information about the current load of a server would automatically update as the load of that server changes.All development for this client was done using Java technology.

Lead a team of four in designing and implementing a business to consumer (B2C) gardening e-commerce site. The site was built using Java technology and the ATG Dynamo Application Server. The application extended the Dynamo Commerce Server framework to handle complex order processing features such as user profile management, order splitting based on product supplier, credit card authorization, and shipping cost/tax calculations.Developed an application to sort and store XML files based on content. The program was written in Java and used a DOM parser.

Member of a two-person team tasked with designing and implementing the user interface portion of a web-based billing system. The user interface was composed of a front-end developed in HTML/DHTML and a back-end developed in Java running on ATG Dynamo Application Server. This was an object oriented design effort documented with UML using Select Enterprise software. This application is currently in production and is used by a branded Internet yellow pages web site to bill advertising customers.Developed functional area of an e-commerce solution that allows merchants to view, approve, reject, and fulfill orders placed by customers. The system was implemented using Art Technology Group’s Dynamo Retail Station software. Business logic was implemented using Java Beans and ATG’s proprietary JHTML format (similar to JSP) for accessing beans and their properties.Designed and implemented a functional prototype of the client portion of a three tier sales automation application using Java. The client interfaces with the second tier by serializing Java objects and delivering them via HTTP. This mechanism allows data to pass through firewalls and facilitates data encryption using SSL.

Atlanta, Georgia, Us

Developed distributed applications with Microsoft Visual C++ utilizing DCOM and MFC.Integrated Microsoft’s Visual SourceSafe source code management system into our team’s development environment.Conducted numerous design and product information sessions with both customers and fellow engineers.Designed and implemented an Intranet web site on the Windows NT platform running Internet Information Server.Utilized Active Server Page (ASP) scripts and ISAPI extensions to provide dynamic web pages and web-based database interfaces.

Chicago, Illinois, Us

Maintained campus network involving Ethernet, FDDI and WAN connections.Maintained a secure dial-in service which connected off-site users to the campus network.Gained thorough understanding of network theory, TCP/IP, AppleTalk and several routing protocols.Designed and implemented a web server, using HTML and CGI scripts written in PERL, which allowed users to interactively view network utilization graphs.Developed several UNIX shell scripts and C programs to automate network maintenance tasks.