David Yahalom

Current

Head of H.A technologies at Veracity Group
CTO at Govermental
Senior Database Project Manager at Veracity Group

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Past

Senior Database Consultant & DBA Expert at Xpert One1
Database Consultant & DBA at Malam
Team Leader & DBA at Govermental

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Education

The Open University
John Bryce

Recommended

7 people have recommended David

Connections

164 connections

Industry

Information Technology and Services

Websites

My Blog

David Yahalom’s Summary

I'm a CTO, lead architect and Senior Database Project Manager living my passion.

I have over seven years of experience in database & information systems complete architecture design, leading database teams and as a database Consultant and Senior DBA from which three years in managing and directing IT database projects and leading teams in various complex and diverse enterprise-level environments.

One of my more recent projects included tuning one of the world's largest telco billing databases running on a massively parallel HP Itanium-based Superdome.

Please visit my blog at:
http://www.davidyahalom.com

My experience includes:

- Leading and directing IT projects and teams.
- Providing end-to-end infrastructure solutions (network, storage, software, database, systems,etc).
- Designing sophisticated database-oriented architectures.
- Designing and supporting critical 24X7 Oracle and MySQL systems.
- Planning and implementing complex RAC & DRP solutions.
- Extensive architecture-wide, instance level and statement level performance tuning (including one of the world's largest realtime cellular billing databases).
- Leading Oracle Security projects including: DB Hardening, TDE, Oracle Database Vault, Sentrigo Database Firewall, strong authentication, externally identified users.
- Designing storage, growth and backup strategies.
- Scripting in several languages.
- Building BI frameworks using Business Objects and Cognos - Supporting large development teams for schema modeling and PL/SQL code design.
- Go-to-guy for pre-sales technical discussions.

David Yahalom’s Specialties:

Oracle, MSSQL, DB2 LUW, MySQL.
Managing,directing and consulting database projects and teams.
Database architecture design and implementation.
Linux, UNIX, Windows.
Oracle RAC.
Oracle DataGuard.
Oracle over NFS.
VLDB Performance tuninig
NETAPP storage filers.
BI, Business Objects, Cognos.
SQL, PL/SQL, TSQL, SQL PL, Perl, VB.
ETL, Data Migration and Integration.
Oracle Database Vault.
Sentrigo.
Database Firewalls, externally identified users, Oracle Enterprise Users.

David Yahalom’s Experience

Head of H.A technologies

Veracity Group

(Information Technology and Services industry)

August 2009 — Present (4 months)
CTO

Govermental

(Information Technology and Services industry)

October 2008 — Present (1 year 2 months)

Directing a database oriented organization in terms of short and long term technological strategy, infrastructure design, vendor choice and partnership, product selection, creating internal technological procedures and managing customer satisfaction levels.
Senior Database Project Manager

Veracity Group

(Information Technology and Services industry)

September 2008 — Present (1 year 3 months)

Re-architecture, overhauling and tuning one of the world's largest cellular billing databases running on a massively parallel Itanium-based HP Superdome.

Leading complex and diverse database infrastructure design projects and writing detailed design documents.

Leading and implementing migration from single instance databases to complex Oracle RAC + DataGuard configurations.

Researching MPP database solutions such as Hadoop and Greenplum.

Designing complex MySQL implementations and complete MySQL-based architectures for critical 24X7 operations including DRP and scale-out replication, backup and recovery strategies and performance scaling.

Leading database virtualization projects based on the VMWARE ESX platform.

Leading Oracle Security projects including: KERBEROS, TDE, Oracle Database Vault, Sentrigo, strong authentication, externally identified users.

Leading extreme large scale Oracle Grid Control deployments for proactive monitoring of enterprise organizations.

Providing performance tuning, schema design and modeling for various development teams.

Writing dozens of short tech tips and published articles via my blog: http://www.davidyahalom.com

Go-to-guy for pre-sales technical discussions.

Cross-platform Oracle performance benchmarking and datacenter migration.

Experience with Oracle Advanced Replication.

Writing Custom Grid Control plugins.

Designing Oracle storage frameworks using NetAPP and ASM.

Extensive experience with Linux/Unix.

Leading system acceptance testing projects.
Senior Database Consultant & DBA Expert

Xpert One1

(Privately Held; Information Technology and Services industry)

August 2007 — October 2008 (1 year 3 months)

Senior Oracle DBA and consultant for Enterprise level organizations.

Administrating and supporting critical 24X7 Oracle databases including multi-million users web configurations.

Designing , implementing and migrating complex Oracle RAC configurations.

Planning and implementing DRP with Oracle DataGuard.

Hardening Oracle & implementing DB firewalls inc. Sentrigo Hedgehog.

Implementing NETAPP storage fillers in Oracle RAC configurations.

Proactive monitoring using Oracle Grid Control.

Designing and implementing Oracle backup strategies, RMAN scripting and storage snapshots.

Extensive experience in Linux and UNIX environments.

Technologies Presenter at IOUG & Instructor at John Bryce training.

Providing performance tuning, schema design and modeling for various development teams.

Writing dozens of short tech tips and published articles.

Go-to-guy for pre-sales technical discussions.

Cross-platform Oracle performance profiling, benchmarking.
Database Consultant & DBA

Malam

(Public Company; 1001-5000 employees; Information Technology and Services industry)

August 2006 — September 2007 (1 year 2 months)

Oracle consultant for various Enterprise and SMB level organizations on Windows and UNIX platforms.

Designing and supporting an ETL data consolidation process from several legacy
systems to a central open database.

Providing ongoing long term database support, tuning and schema design consulting for a large development team.

Designing and supporting backup and recovery strategies of VLDB oracle databases.

Experience in working with RMAN for complex backup procedures.

Extensive Instance and SQL tunning in VLDB OLTP environments.

Lead DBA of a VLDB DB2 LUW financial project.

Experience in Cognos 8.
Team Leader & DBA

Govermental

(Information Technology and Services industry)

July 2002 — August 2006 (4 years 2 months)

Team Leader and Oracle DBA in a large DSS and OLTP environment.

Day to day installation, administration, support and configuration of various large Oracle databases.

Designing and implementing Oracle backup and recovery strategies.

Designing and modeling Business Objects universes in an HR environment.

Designing, implementing and supporting a complex ETL process from a legacy IBM MF to an open Oracle database.

Extensive Instance and SQL tunning in VLDB OLTP environments.

Writing and maintaining PL/SQL stored procedures.

Writing VB front ends to PL/SQL database logic.

Writing Perl scripts.

Leading an ERP project.