STEPHEN GRENHOLM — SENIOR SOFTWARE ENGINEER
SUMMARY AND SKILLS
Senior developer for Java web applications and middleware. Professional expertise includes object-oriented and database technology, web services, algorithm design. Special interests: Data mining/machine learning. Demonstrated technical leadership of development teams. Experienced in the product development lifecycle, having owned responsibility for several large deployed systems.
| Programming Languages |
|
- J2EE, Spring/Hibernate, JSF/JSP
- Some Erlang, Ruby, Python, Groovy
|
| Web Languages |
|
- XSLT
- JavaScript/Ajax/DHTML; CSS
- WSDL, SOAP, UDDI; Axis, some .NET
|
| Databases |
|
|
| Areas of Interest |
- Concurrency
- Data mining
- Software engineering
|
- Transaction analysis, distributed systems, Pi-calculus
- Machine learning, integration with GIS
- Architecture and scaling of large systems, patterns of design, integration, testing
|
PROFESSIONAL EXPERIENCE
Senior Member, Technial Staff
- Java, EJB, and JSF/ADF development on Oracle Identity Manager, a product with millions of dollars of revenue and high profile customers
- Primary developer for integration layer of Oracle Role Manager, leading India-based team on providing new functionality. Programming contributions include: monitoring layer, security layer, enhanced XML-based configuration, reconciliation of loosely-coupled JMS-based systems
- Server side, J2EE-centered development, configuration layers, hierarchy management, scheduling
- Training in multiple technologies and applications, including ADF/JSF framework
- Research as needed into transaction analysis, temporal data stores, role-based access control, scripting languages
Bridgestream, Inc. |
Oct. 2006 - Nov. 2007
|
Bridgestream created SmartRoles, a role management system. Bridgestream was acquired by Oracle
Senior Software Engineer
- Designed and implemented server-side modules of core product, including event handling, scheduling, and input/output abstraction layer (routing and parameter mapping using JMS and web services)
- Primary architect for integration layer, an extensible plugin framework
- Implemented a data mining engine (using FP-Trees and other techniques in a server-side engine available through SOAP interfaces.)
- Primary technologies: Java, J2EE application servers with EJBs and Spring layer, Axis2, JUnit
Groxis, Inc. |
Aug. 2004 - Aug. 2006
|
Groxis, Inc. produced search visualization and clustering software.
Senior Data Connectivity Engineer
- Created key components of Java core architecture: Data acquisition and processing modules (SOAP, Z39.50, REST, RSS/Atom) based on Eclipse-inspired plugin model.
- Moved Java desktop application to Spring/Hibernate/Acegi based web application, allowing site-specific security and customization. Significant Tomcat and Apache development and deployment.
- Designed and implmented document categorization and clustering; ontology development and mapping.
- Key contributor to automatic document categorization and clustering; ontology development and mapping
- Technical representative on customer sales and support teams
- Creation of generic XSLT transformation layer; Schema data model, federated result engine
- Capacity planning, ROI reports, whit papers, client security compliance
Consulting |
2001 - current
|
- Information architecture and site design/implementation for nonprofits
- Web usability and internationalization
- Web production using Ajax, Spring, Perl, MySQL, XML/XSLT, Flash, CSS
- Database design and integration, Oracle, JDBC, Hibernate
Lecturer in artificial intelligence/data mining, operating systems, data structures and algorithms
Nonstop Solutions, Inc., San Francisco |
1998 - 2001
|
Supply chain management, a statistically-based inventory and optimization service and B2B exchange.
Senior Software Engineer; Technical Lead, Infrastructure
- Promoted to development lead of technical infrastructure (EAI and software development), ownership of data warehouse development, J2EE, legacy integration, and interface development after successful implementation of several key projects crucial to the company.
- Organized interview teams and procedures, created standards for technical component of yearly reviews. Developed work plans, design and code reviews, and mentored programmers.
- Lead engineer for large forecasting simulation, modeling safety stock and optimal ordering.
- Wrote C++ module for real-time performance analysis of demand-chain forecasting, analyzing exceptions in prediction for inventory optimization handling millions of transactions daily.
EDUCATION
| Ph. D. |
(All but dissertation) Computer Science, CUNY Graduate School, New York. Distributed constraint programing, concurrency, machine learning |
| M. Phil. |
Computer Science, CUNY Graduate School, NY |
| M. M |
Music performance and composition. Queens College, CUNY, NY. |
PERSONAL
Pursuits: Classical music (former professional violinist). Sports: long-distance bicycling. Languages: English, intermediate French, currently in second year of Arabic and beginning Persian/Farsi. Professional Affiliations: ACM
