Sobha Tammana
Principal Engineer/Technical Lead
Lake Zurich
Summary
Dynamic software professional with a proven track record in designing and developing high-quality technical solutions. Expertise includes Hybris eCommerce development and the creation of robust web and enterprise applications using Java and J2EE technologies. Committed to contributing to a challenging application development environment that fosters positive corporate change, characterized by high energy and dynamic management initiatives within a forward-thinking organization. Dedicated to leveraging technical skills and innovative thinking to drive success and growth.
Overview
31
31
years of professional experience
3
3
Certifications
Work History
Principal Engineer
Valtech Solution, LLC (Previously Kin + Carta and Loop Integration, Inc)
01.2016 - Current
- Versatile with Hybris implementations as a technical lead working with various client models designing and developing B2C and B2B solutions for Southwire, Corteva Agriscience, Royal Caribbean-Excalibur, Trek Bikes, TourTrek/GoBe and SAP LMP projects.
- Full stack developer experience on Southwire project implementing end to end checkout functionality.
- Extensive backend integration experience with SAP BTP and Datahub.
- Successfully designed and implemented B2B, B2C, multi-site and multi-country, end-to-end implementations of eCommerce platforms.
- Hands-on experience with Hybris core architecture, PCM Backoffice & SmartEdit customizations, Cockpits, ImpEX, HAC, ASM, extensions and accelerators etc.
- Sound experience as Scrum Master with Agile based project methodology environments, including sprints, backlog and scrum based approaches to delivering high quality software products.
- As an experienced innovation company, Valtech empowers people and businesses to thrive in a rapidly changing and connected world.
- Environments/Technologies: Hybris (1811-2211), JDK 1.17, React, SAP BTP, J2EE, Tomcat, IntelliJ, Solr, JRebel, Eclipse, Git, Mockito, Junit, XML, XSL-FO, CSS, JQuery, Spring MVC, Web Services
Software Developer, Senior
W.W. Grainger, Inc.
08.2014 - 12.2015
- Internal Employee Access project - Responsible for obtaining required KeepStock data from ClearSpider system and loading into Hybris tables through data import jobs and ensuring data is clean, responsible for removing obsolete data from tables by putting delete jobs in place. Implemented OSSC detail pages to display approved and non-approved data obtained from various systems such as Hybris, SOLR and SAP systems.
- EPro Solutions – Implemented customizations for several ePro customers that use punch out forms.
- Medium Customer Pricing test and Customer Acquisition Testing projects – implemented certain aspects of both front end and bank end logic to align the track codes to customer accounts and fire Responsys pixels accordingly.
- School Dude integration with Gcom site – Implemented the display logic of WOID in OMS workflows and Cart pages based on Single Sign-On, Dude order and Dude user criteria.
- Generated customized PDF files for SOI and CSP quotes using XML, XSL-FO transformation tools.
- Emphasis on test driven development and implemented Junit/Mockito test cases for all projects.
Software Engineer, Senior
Flexera Software, LLC
07.2012 - 07.2014
- Lead Developer for FlexNet Connect product releases, primarily working on server side features to support XT Client library in addition to Windows and Multi-platform agents.
- Implemented Notification Server features such as notification, profile, instrumentation requests and responses, and server/client side conditions using binary messaging protocols.
- Designed and developed FNC Licensing module to control and monetize the use of on-premise, cloud, virtual, mobile and embedded apps.
- Updated FNC Installer to include licensing module related changes to facilitate installation on various platforms.
- Hands on experience with RabbitMQ configuration and usage as part of the FNO-Cloud convergence project.
- Tangibly demonstrated ability to deliver on customer commitments of features and time lines, which has resulted in substantially improved working relationship with key customers.
- Implemented Identity Management UI component in Publisher web site for managing back office server identities.
- Worked extensively with both internal and external teams in all phases of XT Client library development, quality assurance, functional and system integration testing.
- Successfully configured JMeter for performance monitoring across multiple UAT instances to compare, analyze the throughput and response times and GC allocations.
Application Developer, Senior
The Nielsen Company
01.2012 - 06.2012
- As a key member of Composite Manufacture team, efficiently incorporated new features into existing code and supported ongoing release activities
- Gained subject matter expertise working on various releases for Composite Manufacture stack, whose primary objective is to do query transformation on input queries and creating output queries for Netezza execution.
- Facilitated on-shore/off-shore development model by actively coordinating the development tasks with various team members.
Application Developer, Senior
Citi Cards
04.2010 - 12.2011
- Lead developer for designing and developing Java applications with Drools plug in, a rule based engine, to migrate the legacy in-house applications built upon shell scripts.
- Gained subject matter expertise leading various projects for Citi Solvitur4 system, whose primary objective is to present various payment arrangements (offers), Small Balance Write-off process, pre-delinquency arrangements and collections fulfillment process to existing card holders in a real-time mode.
- Implemented Total Due and Past Due NORMS payment programs for collections NIVR on FDR accounts.
- Project leader during the development and testing phases and guided both onshore and offshore developers regarding best practices and ensured project timelines are met.
- Team lead to ensure Enrollment/Completion letters sending to customers via third party vendor printing facilities with new features have been implemented defect free.
Systems Analyst, Senior
Abbott Laboratories
11.2006 - 03.2010
- Senior developer for Enterprise Search implementations for Information Architecture team, incorporating Autonomy K2 and IDOL search server technologies.
- Recognized with Silver Award for outstanding performance and lasting contribution on Glossary custom web application projects with multiple phases including design, implementation and validated system testing and integration.
- Spearheaded code migrations from Verity K2 5 to Autonomy K2 7 and eventually to Autonomy IDOL server by re-writing the core Java, Autonomy API calls ensuring a dynamic product line that provided more user friendly options resulting in greater user satisfaction.
- Configured Synaptica, Dow Jones system, for taxonomy builds in development and production and set up a new QA system and gained extensive knowledge doing various upgrades and product installations and software configurations.
- Facilitated custom collections and indexing jobs for Knowledge Information Portals across Abbott internal sites and provided extensive technical support for software upgrades and troubleshooting production issues.
Software Developer, Senior
Experian Automotive
01.2002 - 10.2006
- Enhanced existing APO application by adding file-uploading features that will allow the clients to upload their lists for suppression purposes and implemented ongoing feature improvements.
- Took an active team lead role in all stages of Auto Prospect Online Enrollment System web application using Model-View-Controller (Struts) framework.
- Administered the source code of the project using CVS, a version control tool, ANT build tools and Eclipse and automated the batch process scheduling using Maestro.
- Versatile with DB2 and Postgres database manipulations using JDBC technology.
- Competent at developing effective Auto Response analysis and creating reports.
- Outstanding abilities in using PinPoint Engines to efficiently extract client requested information from different data resources and in creating complex customized reports using Excel and SAS Enterprise Guide tools.
- Modified existing scheduler Perl script to incorporate the data load application changes and reduced the code lines by more than 40%.
- Delivers vehicle related information services to manufacturers, dealers, finance, insurance companies and consumers.
- Environment/Technologies: Java 1.4, J2EE, Tomcat, Log4j, Struts, JSP, CVS, DB2, Perl, ANT, JDBC, JMS, SAS Enterprise Guide, PinPoint, Eclipse
Software Engineer
Motorola, Inc.
05.1998 - 12.1999
- Working knowledge of leading edge telecommunication technology involving development of system components which use message driven state machines and threads for inter-process communication.
- Led all phases of the software development life cycle including design, coding and testing for the GSM digital cellular base stations.
- Provided technical support in the areas of configuration management by addressing daily issues pertaining to GSM software tools, SCM release builds using Clearcase and IFM tools.
- Developed GUI based web pages that automatically get generated with information regarding the memory management of all the processes of different software load lines.
- Providers of analog and digital two-way voice and data radio products and systems for conventional, shared and private applications worldwide.
- Environment/Technologies: C, C++, Java, Unix, Clearcase, IFM tools, Perl, Unix scripting, SEI-CMMI Methodology, RUP, UML
Software Engineer
Nicolet Imaging Systems
02.1995 - 04.1997
- Implemented inter-process communication procedures between a graphical user interface and the algorithm library to analyze the x-ray images of printed circuit boards.
- Created a customer-product database using RDBX
- Gained extensive working knowledge of graphical user interfaces by implementing additional and enhanced features to the existing GUI using Xview, Motif and X-Windows programming.
- Ported all major software tools from SUNOS 4.1.x to Solaris 2.5 and acquired extensive hands-on experience with shell and Perl scripts.
- Manufacturers of real time X-ray imaging systems, for quality control and process monitoring applications.
Education
Master of Science - Computer Science
Southern Illinois University
Carbondale, ILBachelor of Science - Computer Science
Southern Illinois University
Carbondale, ILSkills
- Languages: Java, React JS, Groovy, C, C, Perl, SQL, PL/SQL, ColdFusion
- ECommerce: Hybris Multichannel ECommerce Platform
Certification
Google Cloud Certified - Generative AI Leader (2025)
Technical Summary
- 10+ years of experience as a SAP Commerce/Hybris developer engineering leading-edge systems with solutions targeting B2B and B2C channels.
- 27+ years of experience in the full life cycle of the software design process including requirements definition, prototyping, proof of concept, preparing the test cases, design, interface implementation, testing, peer reviews, debugging and maintenance.
- Hands-on experience as Scrum Master role ensures sprint goals are met and tickets are assigned to members in time, dev team is not blocked and QA team is getting data for testing. Hands on experience leading the team both as a dev and SM.
- Diverse experience in designing, developing, and modifying applications using SOA architecture, J2EE, workflow engines, rules engines, Spring, Spring MVC, Hibernate, Struts, Oracle, ANT and Maven.
- Proficient with Enterprise Search application development using Autonomy IDOL, Verity K2 and GSA components and Taxonomy build tools such as Synaptica.
- Proficient in application development using Oracle, SQL Server and DB2 database management systems and content management systems.
- Experience in Software Engineering methodologies and Quality Assurance procedures.
Timeline
Principal Engineer
Valtech Solution, LLC (Previously Kin + Carta and Loop Integration, Inc)
01.2016 - Current
Software Developer, Senior
W.W. Grainger, Inc.
08.2014 - 12.2015
Software Engineer, Senior
Flexera Software, LLC
07.2012 - 07.2014
Application Developer, Senior
The Nielsen Company
01.2012 - 06.2012
Application Developer, Senior
Citi Cards
04.2010 - 12.2011
Systems Analyst, Senior
Abbott Laboratories
11.2006 - 03.2010
Software Developer, Senior
Experian Automotive
01.2002 - 10.2006
Software Engineer
Motorola, Inc.
05.1998 - 12.1999
Software Engineer
Nicolet Imaging Systems
02.1995 - 04.1997
Bachelor of Science - Computer Science
Southern Illinois University
Master of Science - Computer Science
Southern Illinois University