Software Engineer Oracle

Cristian Mihaila

Email: **********@******.***

Phone: 905-***-****

LANGUAGES & PROFICIENCIES

Java, C++, HTML, JavaScript, SQL, PL/SQL

OO Modeling, Rational Unified Process

ATG, WebLogic

Servlets, JSP, Struts, AJAX, EJB, WebServices

XML, XSLT, XPath

Oracle, JDBC, Oracle OCI

AREAS OF CONCENTRATION

Scalable OLTP Systems and Enterprise level Workflow solutions.

The last three phases of the Rational Unified Process methodology with

emphasis on the Elaboration(Architecture) and Construction(Prototype).

System frameworks using Java and C++.

Web applications based on EJB and WebServices backend services.

Detailed Design Documentation and Code Generation based on UML

Class/Sequence Diagrams.

Coaching application developers and facilitating communication with senior

members of the Infrastructure/Architecture team.

Translating business requirements into system design documents

EDUCATION

M.Sc. in Computer Science, Polytechnic Institute Bucharest

Java2 Certified Programmer - Sun Microsystems

Java2 Certified Developer - Sun Microsystems

WebLogicServer Enterprise Certified Developer - BEA Systems

EMPLOYMENT HISTORY

Spin Master, Toronto

February 2011 to June 2011

ATG Consultant

Spin Master e-commerce site

Implemented the global Header, Footer and Cart jsp widgets.

Implemented a generic PageLayout widget enabling significant code reuse via

widgets while achieving consistency and uniform look-and-feel for the site.

Implemented various content targeters for the Home page.

Implemented a configurable mechanism supporting the rendering of repository

based content with flash based artifacts.

Implemented the Catalog browsing pages. Developed a set of jsp widgets to

display product details as well as collections of catalog items

(categories/products). Used them to render in a systematic way all pages

supporting the catalog navigation.

Used the Faceted Search functionality to implement a 'filtering' widget

(Age, Gender, Brand, SeenOn TV) for the product list pages.

Extended the Payment Process with a custom Payment Method - CreditLine.

Technologies:

Application Servers : ATG 9.2 (Commerce + Merchandising + Search), JBoss

4.3, Apache 2.2

Open Source Frameworks : jQuery, Jsp

Database : DB2

IDE : Eclipse 3.5, SVN

OS : Windows XP, RHEL 5.5

LoyaltyOne, Toronto

April 2005 to December 2010

Senior Technical Consultant

Airmiles.ca - Re-platforming of the airmiles.ca web site.

Designed a Content Segmentation engine as a plug-in to the FatWire Content

Server. Based on a transformation of FatWire Segmentation Rules from XML to

a relational form in an Oracle database. Implemented as a set of XML SAX

parsers coupled with a JDBC data access layer exposed as an enterprise

service via stateless EJBs.

Implemented the custom Login and Profile management module.

Designed a Page Rendering Framework similar to the Struts Tiles, supporting

dynamic page generation in ATG. Unlike Struts, the configuration is defined

in the ATG SQL Repository and managed via the ACC interface. It allows

changes to the layout configuration of web pages to be done dynamically.

Engineered the splitting of the monolithic airmiles.ca web site into a set

of cooperating ATG web sites organized by functional areas - Account,

Sponsors, Rewards. Implemented the SSO functionality supporting the

integration of the different web applications behind the airmiles.ca domain

using the Apache HTTP Server Plug-in for Weblogic as a site integrator.

Designed a generic Interceptor Framework providing a configurable, dynamic,

rule based redirection mechanism. Used as the backbone for implementing

various Login scenarios and securing the access to different areas of the

web site. Leveraged the ATG Targeting Rules and Repository API.

Implemented the Airmiles Shopping Cart and the associated Check Out page

flow.

Integrated an external credit card payment system - MONERIS - into the ATG

Shopping Cart Check Out pipeline.

Implemented a Merge Tool for ATG repositories. Handles the XML files

exported by the startSQLRepository utility via a set of XSLT

transformations using the SAXON processor.

Implemented Web Services for a Kiosk application providing account and

rewards functionality related to the airmiles program.

Implemented a set of Web Services emulators for the Collector, Account and

Order Management back-end services.

Implemented the build process for the entire .ca complex using Maven2.

Created the custom maven plugin required for the integration of the ATG

Assembler task into the build pipeline.

Technologies:

Application Servers : ATG 2006, 2007.1, WebLogicServer 8.1, 10, Apache 2.1

Open Source Frameworks : Spring, Hibernate, Axis, JAX-WS, Mootools, Jsp

Database : Oracle 10g, PL/SQL

IDE : Eclipse 3.5

Performance Monitoring & Tuning : JProbe

OS : Windows XP, Solaris 9

TELUS, Toronto

August 2003

Senior Programmer Analyst

NCCS - Complex of applications implementing the National Channel

Compensation System Web Portal for TELUS.

Designed an XML/XSL based Report Generation framework. Provides a generic

solution for creating reports from data stored in an Oracle database based

on a declarative programming model via XML/XSL configuration files.

Implemented as a pipeline of XSL transformations feeding into a FOP

(Formatting Object Processor) driver to produce PDF documents on the fly.

The data access layer implemented a set of synchronous/asynchronous data

providers backed by a combination of stateless, stateful and message-driven

EJBs.

Developed the Channel Partner Info application managing the contracts and

commissions for outlets and sales representatives in the Telus directory.

Implemented with Struts and session EJBs in a WebLogicServer/Oracle

environment.

Performed modifications to the existing code base for the Online Inquiry

Tool and the Dealers Commission Reporting system - applications supporting

the process of compensations reconciliation for TELUS dealerships.

Implemented with Struts 1.1 and stateless EJBs interfacing with Oracle via

JDBC calls to Oracle Stored Procedures and Parameterized Queries.

Migrated the Online Inquiry Tool and the Dealers Commission Reporting

application from Borland App Server 4.5 to WebLogicServer 8.1 following the

development standards and practices defined for Configuration Management

and Logging.

Performed various tasks related to different stages of the system

development process : Code reviews, Unit testing, QA, System Integration,

Production Releases. Used Rational Clear Quest to support the transition of

the application through the Development, QA, Staging and Production

environments.

Technologies:

Application Servers : WebLogicServer, Borland App Server

Open Source Frameworks: Struts 1.1, Log4J, Spring, FOP, iTEXT

Database : Oracle 9i, PL/SQL

IDE : JBuilder 8, JBuilder X

UML : TogetherJ

OS : Windows 2000, Solaris 8

Wells-Fargo, Des Moines

July 2001 - July 2003

February 1998 - April 2000

Systems Analyst

Sapphire - Enterprise level OLTP system, supporting Wells-Fargo's Credit

Banking operations.

Designed and implemented a middle tier service acting as a Distributed

Iterator over persistent data stored in the Oracle database. It provided

such features as 'connection pooling', 'instance pooling', aggregation of

results sets from multiple, parallel queries, asynchronous processing,

dynamic selection of Oracle hints based on the run-time values of bound

parameters. Used Win32 threads, STL, OCI7/8, MSXML, WLS 5/Tuxedo 8.

Designed and implemented a framework for a Publish/Subscribe service with

the capability to support different types of 'transport' layers via proxy

plug-ins (DCOM, MSMQ, WL Callbacks). It provided a highly

scalable/configurable solution for the asynchronous path from the Workflow

server complex(WLE) to up to 10000 clients (VB). Implemented as a

hierarchical set of multithreaded stateful servers bridging between WLE and

COM. Used a centralized XML config file and WLE Factory Based Routing to

dispatch client 'subscription requests' to the 'terminal' nodes in the

server hierarchy. Used the Oracle database as a persistent store for client

'subscriptions' as well as 'messages'. Implemented with Win32 threads, ATL,

STL, OCI7/8, MSXML, WLE 5/Tuxedo 8.

Designed and implemented a 'Transactional Queue' server supporting the

asynchronous interaction between different server-side components of the

Workflow and Statistics services.

Implemented a library wrapping Windows encryption services used for client

authentication against WLE servers.

Implemented a Serialization framework via C++ templates wrapping user

defined data types conforming to a defined protocol. Used to marshal

arbitrary Property sets between Client and Server as well as for persisting

them to the database.

Implemented the EJB prototype for the Post Payment Use Case in order to

evaluate a Web based solution as an alternative to the existing VB/CORBA

implementation. Used JSP for the Internet Explorer based front end and

WebLogicServer 7 for hosting the server side components implemented as a

combination of Struts Actions, Session and Message Driven EJBs.

Served as a team member of the architecture, performance analysis,

framework, and server developer team. Performed extensive Code Reviews.

Participated in the design of the WLE cluster architecture.

Was responsible for analysis of business process, meeting domain experts/

business analysts, discussing business scenarios, and validation of

sequence diagrams in Rational Rose using UML.

Technologies:

Application Server : WebLogicEnterprise 5, WebLogicServer 7

Standard API : JDK1.3.x, JDBC, J2EE 1.3(EJB, Servlets, JAXP, SAX, XSLT)

ATL, STL, Win32

Open Source APIs: Struts 1.1, Log4J

Database : Oracle 8, OCI 7/8, Persistence

IDE : VisualStudio 6, JBuilder 8

UML : Rational Rose 4.0/98

OS : Windows NT 4.0, Windows 2000

Metavante, Toronto

April 2000 - June 2001

Consultant

InetBiller - Internet Billing Service

Developed an asynchronous solution to interface Metavante's InetBiller

application with a third party Bill Aggregator (Checkfree) using Mercator.

Developed a framework for Internet billing services based on the MVC

pattern. Used Java Servlets to implement the 'Controller'. Implemented the

'Model' via session beans wrapping JDBC calls to Oracle stored procedures.

The 'View' was implemented with HTML and JSP templates based on Freemarker

mark-up.

Developed a generic Biller-to-Database loader class used during the Bill

Loading process. It consisted of two steps : 1.Translating from the Biller-

specific data format to a generic XML representation using an XSL driven

process. 2.Execution of Oracle SPs that parsed the XML stream generating

'inserts' according to the internal database representation. Used xml4j and

xalan.

Developed an XSL based translator from the internal database format to an

XML format, suitable for the 'Presentation' layer, formatted as an HTML or

PDF document. Used Oracle SP, xml4j and xalan.

Worked closely with business analysts to create a detailed design for the

B2B product modeled in Rational Rose98.

Technologies:

Application Server : WebLogicServer 5.1

Standard API : JDK1.2, JDBC, J2EE1.2 (JSP, Servlets)

OpenSource API : Freemarker, xalan, xml4j

Database : Oracle, PLS/SQL

IDE : VisualCafe

UML : RationalRose 98

Elsag Bailey, Toronto

June 1997 - February 1998

Consultant

STWrapLine - Floor Tracking System for the Pulp/Paper Industry

Designed and implemented a transport independent Publisher/Subscriber

service customizable through 'plug-in' COM proxies supporting DCOM and

MSMQ. Implemented a P/S Viewer Tool providing configuration management and

traceability of the publisher/subscriber's activity based on the Observable

pattern.

Implemented a COM based framework for asynchronous message driven

processing (multithreading, message dispatching, notifications, extensible

message protocol, event logging).

Implemented a Link Interface between a PLC controlling a set of WrapLine

stations and the Floor Tracking front-end application written in VB.

Technologies:

Rose 4.0, ATL, STL, VC++ 5.0, MFC, DCOM, MSMQ, Winsock 2.0 on NT 4.0

NCR, Toronto

October 1996 - June 1997

Consultant

POS One - Point Of Sales System for the US Postal Office

Implemented an ObjectBroker for UniversalDataObjects (COM based POS

Business Objects).

Designed and implemented the AutoLoadableObject COM interface supporting

the persistence of POS Business Objects.

Implemented COM Business Objects supporting the Inventory and Cash Drawer

Use Cases.

Implemented the Session Manager for the Terminal & Accountability Use

Cases.

Technologies:

Rose 4.0, ATL, STL, VC++ 5.0, MFC, COM, on NT 4.0, Sybase

Nortel, Toronto

June 1995 - October 1996

Senior Software Engineer

ICCM - Call Center Management System

Designed and implemented the System Infrastructure library, defining the

multithreaded middleware framework for the ICCM system. Provided support

for asynchronous processing based on events and messages exchanged over

TCP/IP channels. Also implemented the different types of messages defining

the ICCM Protocol.

Publisher component and API supporting the Real Time Display feature of the

ICCM Client.

API supporting the access to the persistence layer of the ICCM Operations &

Services Management component.

Technologies:

Tools.h, DBTools, Win32 API, Winsock 2.0, Sybase

Honeywell, Toronto

March 1994 - June 1995

Senior Software Engineer

PDA100 - Plant Data Access System

Port of the SI(System Infrastructure), TDC Encapsulator and the User

Interface from POSIX, X Windows(Motif 1.2) to Windows NT(MFC).

PC Network Manager PCNM

Port of the PCNM HLLAPI library from Windows NT to UNIX and NOVELL NETWARE

using Sockets on TCP/IP & NWLink and TLI on IPX/SPX.

License/Performance Monitoring DLL based on the PerfCounter API.

Optech, Toronto

March 1993 - March 1994

Software Engineer

SHOALS - Ground Based System for post-processing LIDAR generated data.

Implemented the batch process supporting the generation of colored maps in

GPS coordinates from the LIDAR data.

Implemented the GUI for the dynamic reprocessing of colored maps and

waveforms display on selected sounding points. Used multiple background

processes to support analysis of multiple regions in parallel.

Technologies:

C, Xview, ESQL-C, HYPERSCRIPT and INFORMIX 5.0, SUN OS 4.1.3

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