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Senior Linux System administrator/DevOPs and Network Engineer

טבריה, Israel

Freelancer

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ABOUT

הכרות ראשונה עם לינוקס ב1996 - Debian GNU/Linux

נסיון של יותר מ10 שנים בתור לינוקס אדמין
הפצות דביאן וראד האט
נסיון טוב בכתיבת סקריפטים בפארל - perl
הכרות עמוקה ונסיון טוב מאוד בכלים : awk, sed, bash3/4 shell - פרוייקט שנכתב ב Autopass - bash4

6+ שנים נסיון בתור מהנדס רשתות
הבנה עמוקה של מודל OSI ופרוטוקולי TCP/IP
נסין עבודה עם ציוד של סיסקו, Fortigate, 3com, Linux , בין היתר- עבודה עם הגדרת ותכנון של ניתובים מורכבים, packet filtering ותרחישים של QoS מורכבים

LANGUAGES

English

Native or bilingual proficiency

Hebrew

Native or bilingual proficiency

Portuguese (Brazil)

Native or bilingual proficiency

Spanish (Latin America)

Full professional proficiency

SKILL DETAILS

Technology

150 ₪ / hr

Information & Network Security

TCP/IP and OSI model in depth understanding, Policy Based Routing, Firewalls, Linux Advanced IP routing and Traffic Control QoS, Cisco Routers (857w, ,2811, 1841), Fortigate, 3com 4500/G series, Layer2 Bridging protocols, Link Aggregation, VLANs

SELinux, Ipsec, stunnel, iptables, ebtables, arptables, Host Security, PAM, Kerberos, TCP Wrappers

Network Design & Management

UNIX, Linux

Linux: Debian/Ubuntu, RedHat/CentOS/Scientific Linux, Alpine-Linux

Installation, Configuration, Administration and Troubleshooting.
7 years work experience

Amazon EC2 - Elastic Compute Cloud

Setup Amazon AWS instanes – CentOS 6/7 ElasticCache instances, redis and memcached

DevOps

Advance bash scripting + awk + sed
sample of project "autopass" in my github/zapw

Deployment of development/QA/Production environment

System Admin

Cisco

Cyber Security

Software & Programming

200 ₪ / hr

Scripting

Advance bash scripting + awk + sed
sample of project "autopass" in my github/zapw

EMPLOYMENT HISTORY

August 2014 - May 2015

Senior Linux system Administrator / DevOPs

SpotOption , Ramat Gan

עבודה מול Amazon AWS – תחזוקה/הרמה אוטומטית של אינסטנסים ליותר מ 1500 שרתים, CentOS 6/7 ElasticCache instances – redis, memcached, Firewall, Load balancer
נסיון עם CDN – Incapsula/Cloudflare ( שכן רוב השרתים היו מאחוריהם)
הרמה אוטומטית של סביבות פיתוח,QA ו פרודקשאן עם הכלי Autopass

December 2013 - June 2014

Senior Linux system Administrator / DevOPs

SeekingAlpha , Raanana

Setup high availability reverse proxy load balancer with haproxy
Added monitoring on postfix logs, regex filtered, uploaded to log management system
Used cacti and newrelic to draw mail statistics graphs
Configured QoS for the office network on fortigate router, route load balancing and health check

May 2007 - May 2012

Senior Linux system Administrator and Network Engineer

Netvertise , Ramat Gan

Created and maintained thin client system for Call Centers stations based on Debian Linux distribution and XFCE desktop manager
Created custom tools for monitoring user desktop activity of over 350 diskless stations booted simultaneous via network from NFS server
Created automated scripts for .deb packaging and quick deployment of thin client system, as well as collaborated with software development team on shared projects
Set up backend production servers for Call Centers' thin client system using xen
On thin client backend provided centralized authentication using Kerberos and MySQL authorization, group management (SSO)
Filtered web traffic with Squid proxy cache server, provided printing server, jabber server, centralized remote logging of thin client stations
Responsible for Installing, configuring and securing production Linux based VPS servers, holding online stores
Designed and implemented company's central office and call centers' network using cisco hardware
Iptables and cisco firewalls scenarios, policy based routing, Voice and Data QoS, network traffic load balancing
Routed Central office and Call Center sites' traffic using VPN tunnels (OpenVPN, GRE over IPSEC)
Applied custom routing patches to linux kernel for complex routing scenarios
Implemented Layer2/Layer3 and Layer4 based QoS in Linux and Cisco
Applied monitoring tools for line quality and routing failover in cisco and linux routers
Set up and maintained office VPN under cisco platform as well as linux, made it compatible with windows VPN Dialer, Created tools for automatically connecting workers from home
PKI (x.509) certificate management and creation required for various VPN solutions
Integrated PPP user authentication/authorization and authentication-based routing in Linux and cisco (VPN) for employees wanting to stay connected to the office from home
Created scripts for backup automation using open source tools
Set up full Interoperability between Windows 2003/2008 servers' implementation of Kerberos and Linux MIT (SSO) For a true Single Sign on experience from both Linux and Windows to a single KDC server.
Redhat RHCE Certification

2005 - 2006

Microsoft engineer

Global Networks , Jerusalem

Installed and managed Windows 2003 Server AD, Exchange, DNS, backups, Hardware Raid, Tape backup, SCSI Drives
Provided Computer Repair Technician, Network support and Maintenance services
Made Cat5 RJ45 Network cables, thread them at company sites, connected to network panel and switches, tested and repaired faulty cables and connectors

January 2004 - January 2005

Technical Support

012 golden lines , Petah Tikva

Created Linux Based VPN (aka dialers) connections for clients
Network diagnostics and troubleshooting with HOT (cable company) and Bezeq's ADSL infrastructure
Provided ADSL/Cable modem diagnostics, operating system network repair and troubleshooting
Configured and troubleshooted Windows and Linux dialers (Analog modem- PPP; Cable - L2TP, PPTP; ADSL – PPPoE, PPPoA, PPTP)
Provided Technical Support to ISP business customers