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Location:
Bangalore, India (GMT+05:30)
English Skills: (self-assessed)
5.0
Member Since:
August 30, 2008
Last Worked:
 
oDesk Ready:  
Yes
 
 
 
 

Jayashree D. - Senior System Administrator - Freelance System / Database Administrator, India

A position as a Senior Network/Systems Administrator that lets me utilize my extensive administration experience and team management skills. I have been a Senior System Administrator for 15 years. My main passion is System and Network administration. I have extensive experience with multiple UNIX-based operating systems (Linux, Unix and Solaris), system and network security, virtualization, network design, backups and web application deployment. I have experience with high traffic...
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See All Tests Taken (4 items)
oDesk Tests Taken
Name of Test Score Percentile Date Taken Duration
Redhat Linux 9.0 Admin Test 4.90 99% TOP 10% 1st Place! 10/30/2008 11 min
Redhat Linux 9.0 General Test 4.90 99% TOP 10% 2nd Place! 10/30/2008 12 min
Windows XP Test 4.75 98% TOP 10% 11/02/2008 7 min
Unix Test 4.25 91% TOP 10% 10/21/2008 33 min
Recent Candidacies
Job Opening Title Initiated By Date
Script installation and setup Provider December 10, 2008
Job Category Interests

Web Development

Software Development

Networking & Information Systems

Writing
Skills
Skill Experience Level Last Used Description
Database Administration 15 yrs 5.0 2008
  • MySQL (maintenance, tuning, replication in large environments)
  • PostgreSQL (backups, SSL, ODBC, auth mechanisms)
Networking 12 yrs 5.0 2008
  • Complete understanding of TCP/IP, UDP, ICMP
  • Network troubleshooting
  • Server configuration
  • Physical network maintenance and upgrades
  • Basic switch and router maintainence
  • Familiar with Intel's PXE netboot protocol
  • DHCP
  • SNMP
  • IPv6
  • Load Balancing, custom balancers, LVS, pound
  • MRTG, Nagios, Zabbix, OpenNMS, NTOP
Operating Systems 15 yrs 5.0 2008
  • 15 years Linux (CentOS, Red Hat, Fedora, SuSE, Debian, Ubuntu,     Slackware, Gentoo)
  • 12 years Unix ( FreeBSD, OpenBSD, Solaris 2.x (5years))
  • 5 years MacOS X
  • Windows Server 2000/2003 and Desktop support of Windows 95/98/NT/2000/XP
Programming and Scripting 10 yrs 5.0 2008
  • Mostly systems automation and maintenance tasks
  • Python and Perl
  • Shell scripting (bash, ksh, csh, sh)
  • Limited C debugging, make
Security 15 yrs 5.0 2008
  • Advanced knowledge of Unix security
  • Secure internet services
  • LAN/WAN security, VPN
  • Firewalls (iptables, APF firewall, etc)
  • KAME IPSEC
  • Encryption (PGP, GnuPG, SSL)
  • SSH (SSH v1, v2 and OpenSSH)
  • Kerberos 5 (Heimdal)
  • S/Key/OPIE
  • Host-based security: OS hardening, disabling or encrypting unsafe network services
  • Security Policy Design, Implementation
  • Network/Host Security Auditing
Software 15 yrs 5.0 2008
  • Apache HTTP/HTTPS servers (versions 1.3.x/2.0), Lighthttpd
  • Java Containers – Tomcat, Jboss, Jetty, etc
  • DNS (BIND 4/8/9)
  • NFS, Samba, OpenLDAP
  • NIS/YP
  • NTP, ntpdate
  • POP, IMAP, IMAPS
  • PPP (FreeBSD Kernel PPP)
  • SMTP (Postfix, QMail, Sendmail, Exim)
  • Source code control (CVS, SVN, RCS, SCCS)
  • Remote Monitoring: Nagios, Zabbix, OpenNMS
  • Collaboration: Trac, egroupware, phpgroupware, etc
  • X Window System (configuring servers, desktops, application servers, XDM)
virtualization 6 yrs 5.0 2008  OpenVZ, Xen, VmWare, VirtualBox, Virtuozzo and QEMU
Certifications
Date Earned Name Score Percentile Organization Description
2008 Redhat Linux 9.0 Admin [1915585]     ExpertRating Percentile: 99.99%
Topped the Test and am on the Hall of Fame
Employment History
From To Company Title/Role Description
12/2000 Present Freelancing Senior Systems Administrator / Executive

Have been providing remote system/network/database administration, virtualization technology consultancy, Custom Made Install CD, Installer Packages (Linux) development and deployment, Load Balancing and High Availability Consultancy/design/deployment, OpenVZ/Xen/VMware systems, and several other jobs.
01/1993 04/2000 Rsource, Bangalore Lead Systems Administrator / Team Lead

Unix Administration and physical maintainence of large farm of FreeBSD, Linux and Solaris servers, including high-traffic Apache web servers and Database servers in a co-located data center environment. Installed and maintained several of LVS load balancers. Implemented Failover options with Linux-HA. Introduced virtualization technology and deployed systems on them. Network design/deployment. Deployment of web application on apache and Tomcat/Jboss. Development of mass installer for farm deployment.

Other Experience
Multiphysics Computation
Have vast experience in developing Multi-physics simulation software.
Education
From To School Degree Area of Study Description
10/1987 03/1992 Aachen University Doctorate Computational Sciences
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oDesk Tests Taken
Name of Test Score Percentile Date Taken Duration
Redhat Linux 9.0 Admin Test 4.90 99% TOP 10% 1st Place! 10/30/2008 11 min
Redhat Linux 9.0 General Test 4.90 99% TOP 10% 2nd Place! 10/30/2008 12 min
Windows XP Test 4.75 98% TOP 10% 11/02/2008 7 min
Unix Test 4.25 91% TOP 10% 10/21/2008 33 min