Yonah Russ
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Yonah Russ

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Expert in: Linux    
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Languages: English,Hebrew
Computer and Networking Infrastructure expert with over 13 years experience in Unix/Linux system administration, Network security consulting, and Web applications development.
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Chat / Phone: $1.10 per minute (Convert currency)
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Other Specialties

Solaris
System Administration
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Degrees

Jerusalem College of Technology Bar Ilan University

My Expert Service

EXPERT UNIX: Solaris 10, Zones(Virtualization), ZFS, Hardware(M5000, T5140, T2000, X4450, V490) Storage: EMC Clariion(CX3, CX4, AX4-5), RAID Database: MySQL 4.1, 5.0, 5.1, MySQL Replication Network: F5 BigIP LTM 1600, iRules, RAM Cache, SSL offloading, HTTP, SMTP Applications: Apache 1.3-2.2, PHP 4,5 Glassfish 2.1, Squid 2.3-2.6, Postfix, Samba/Winbind EXPERIENCED UNIX: (RedHat, Ubuntu, Debian), Linux-HA, DRBD, Solaris(2.7,8,9), RBAC, DTrace, Sun Cluster, Sun Studio, JASS Storage: NetApp, Sun StorEdge, SAN, NAS, FC, iSCSI, Capacity Sizing Database: Oracle 10gR2, Oracle RAC, Data Guard, SQLite Network: Cisco/Nortel Switches, CSS, ASA/PIX FW, DDOS Mitigation, VPN, VLAN, LACP, Wire Sniffing Development: SVN, SmartSVN, PHP, PERL, SQL, HTML/XHTML, CSS, JavaScript, Shell, Awk, Sed Applications: Sendmail, Qmail, NGINX, Plone, Office, Visio FAMILIAR Security: Hardening, IDS (Snort), Pen. Testing (Nessus, Acunetix), PCI, WAF, XSS, CSRF, SQL Injection Business Continuity: EMC Networker(Legato), Recover Point, Replication Manager, LTO3/4 Monitoring: TeamQuest, Nagios, Zabbix, Cacti, Orca, Monit Data Warehouse/BI: Pentaho, Infobright, Oracle Exadata V2 Development: JIRA, Confluence, Bamboo, TortoiseSVN, Eclipse, Java, C++, AJAX, GigaSpaces, Azul Email: Spam Assassin, Cyrus, Courier, ClamAV, ReturnPath, JMRP, DKIM Active Directory Integration

Experience & Qualifications

Senior Systems Architect, 1.5 years, International company (203M revenue)• Managed production systems team (4 Senior Systems Engineers + Outsourcing) • Production systems in 7 data centers • Applications serving 25 Million+ requests per day, 50TB+ total traffic per month • Consolidated services into 30% as many servers • Increased service capacity between 10 and 400 times • Introduced technologies including: Virtualization, Application Acceleration, Tiered Storage, Sun Cluster, FC SAN • Technical Authority within company for all new systems and integrations • Supported R&D teams with production quality environments and software architecture optimization. Chief Systems Architect, www.playtech.com Playtech, Tel-Aviv • Member of technical steering committee with CTO, Chief Software Architect • Managed system architecture team (1 Senior Systems Engineer, 1 Project Manager + Production team leaders as needed) • Technical Authority within company for all new systems and integrations • Technical point of contact for VIP customers • Java Acceleration project increased capacity of hosted services 100% • Mail systems upgrade project moved thousands of mailboxes to globally redundant infrastructure • Helped introduce technologies including: Grid architecture, capacity management, and DDOS mitigation Moved to William Hill Online, 29% owned by Playtech, as part of joint venture with William Hill PLC. Senior Unix Systems Engineer, www.ad-gency.com Ad-Gency LTD., Tel-Aviv • Brought hosted services in house for better performance and reliability • Served as UNIX team leader (1 Junior System Engineer) • Production systems in 2 data centers, 50+ websites, up to 2,400 requests/s, over 150k emails/day • Migrated Solaris 9 to Solaris 10, Oracle 8i to Oracle 10g • R&D support: source control, development sandbox, QA/Staging environment supporting over 50 web sites • Custom encrypted backups of Oracle to LTO3 Software Engineer, www.idf.il MATBAT Systems Engineering, Tzrifin • Managing integration with new systems • Reverse engineering of proprietary formats/protocols • Product Management: Interface documentation, requirement tracking, creation of acceptance test procedures • Supervised code optimizations which increased capacity by 1000%. • Experience in Cellular Networks, Audio/Video editing/broadcast systems, Camera Control, Video/Voice over IP, Citrix, High Availability • Worked with several major defense subcontractors including Rafael, Elbit, Cubic, Bynet, and Eltel. Project Manager, www.mirimar.net Mirimar Networks, Jerusalem • Presale: Responding to RFPs, negotiating contracts for web, database, and Linux related projects • Post sale: Interfacing between customers, sales team, graphic designers, and programmers. • Lead the company in standards based, accessible web development. • Initiated a case study project for the company website, increasing site traffic several times over. Unix Sysadmin & Teacher's Assistant, www.jct.ac.il Jerusalem College of Technology, Jerusalem Junior Systems Administrator, www.yna.edu Yeshivat Hakotel Oversees Program , Jerusalem (now Yeshivat Netiv Aryeh)

Available Modes Of Communication

email/chat

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