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Resume for Linda Bissum
A pdf version can be found here.
My many years as a Linux and Unix System Administrator
and infrastructure designer enable me to identify and solve
issues before they become problems. I recognize that
computer and network implementations are driven by business
requirements, and design systems accordingly. I prefer
strategic solutions to short term fixes when possible.
I am expert in Linux and Unix systems administration and
Linux and Unix infrastructure. I have system administration
experience on a variety of platforms, with particular
emphasis on high availability Linux, Sun Solaris, and BSD
derived systems. My programming experience extends back
over 25 years in a variety of languages; with a current
emphasis on Perl and C. My Web-related skills include Web
server configuration, HTML, and CGI programming.
I enjoy working with people. I am a good listener, and
believe in sharing information. I place great importance on
mentoring junior system administrators. I like to read, and
continue to hone my skills by reading books on topics
related to my work.
During my career with Linux and Unix System
Administration, I have used, configured and maintained many
different types of Linux and Unix hardware and software
including the following:
Software
Apache BIND/DNS Big Brother
Bud Tools CVS DHCP
FTP IMAP ISS Scanner
LDAP Legato MRTG
MS Project Mod-Perl MySQL
NFS Nagios NIS
OpenSSH OpenSSL PGP
POP Perforce Postfix
RAID rdist RCS
rsync SMTP SNMP
Samba Satan Sendmail
TCP/IP Snort IDS Squid
TCP-wrappers Tripwire UUCP & Usenet
Veritas File System (VxFS) Visio
Operating Systems
In recent years, I mostly worked with Linux and Solaris.
However, during my career, I have managed many other types
of operating systems:
AIX DEC-UNIX HP-UX
IRIX Linux (RedHat, Suze & Debian)
Pyramid-OS SCO Unix Solaris 4 through 9
SunOS Unix version 6 through System V rel 4
Programming
In recent years, I mostly programmed in Perl. However,
during my career, I have used many other programming
languages:
Algol Assembler C
Cobol Expect Lex & Yacc
Lisp PHP Pascal
Perl PL1 SQL
Shell Sed & Awk
Firewalls
n resent years, I have mostly managed iptables and
Netscreen firewalls. However, during my career, I have
managed many other kinds of firewalls:
Checkpoint Cisco PIX FTK & Gauntlet ISS
NetScreen Iptables Raptor Eagle
SunScreen
Computer hardware
Auspex Cisco HP DL360 & DL380
Dell 1x50, 2x50 F5 IBM RS 6000
Mips Netscreen Sun Sparc 1 2 5 10 & 20
Network Appliance Pyramid SGI Indigo E250/E450
E3500, E4500, E220R Netra T1
Sun Ultra 1, 2, 5, 10, 60 & 80 A1000, A5000
Education
Exam Scient in Computer Science, University of
Copenhagen, 1980.
Electronic Engineering Degree, Frederiksberg Institute
of Technology, 1972.
Various conferences, starting with LISA II and
progressing through SANS, USENIX, most LISA conference.
Accomplishments
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Designed, built and managed high availability Linux
and Unix server farms providing Internet services from
remote and local data centers. Designed and built an
expandable and automated server infrastructure for
automated installation, configuration and management of
the servers, using tools such as Big Brother, FTP,
Jumpstart, KickStart, Perl, rdist, rsync and ssh.
-
Managed small and large heterogeneous networks of
Linux/RedHat/Debian, Solaris and BSD, that included
other less used platforms, such as HP-UX, DEC-UNIX,
AIX, SCO, etc.
-
Configured and troubleshoot DNS/Bind,
SMTP/Sendmail/Postfix, NFS/NIS, Firewalls, and NTP in
small and large installations. Automated system
administration tasks.
-
Installed, configured and managed Apache web servers
in small and large installation.
-
Installed dedicated and Linux & Unix firewalls
and consulted on UNIX/Network security issues.
-
Built large and small system administration related
utilities in Perl and Shell. Ported open source
programs in Perl and C to new environments. Maintained
a make library providing a systematic approach to
publicly available software packages for multiple
architectures from a single shared source tree.
-
Acted as manager, mentor teacher and technical lead
for system administration teams.
-
Published papers at
national conferences as well as
numerous magazine and journal
articles on topics in system administration
and security, including an ongoing
UNIX system administration question
and answers column in SysAdmin Magazine.
-
Participated in national conferences as
program commeettee member and
conference chair.
-
Founder of Bay-LISA, the San Francisco Bay Area
Large Installation System Administration User Group.
Founding Board Member of USENIX/SAGE Special Interest
Group.
Work History
Got Linux, Inc, Livermore, California; July 2006 to
present
Senior System Administration Consultant
High Availability Linux servers.
Accomplishments include:
2Wire, San Jose, California; August 2001 to July
2006
Senior Operations Engineer
Linux servers with Apache, Resin and Postgres, Oracle
& MS-SQL Database.
Accomplishments include:
-
Designed and built production and internal corporate
server infrastructure on Linux, including necessary
infrastructure for remote high availability production
site, out-of-state fail-over site and several internal
test clusters. All servers are maintained remotely.
-
Successfully completed scheduled and unscheduled
fail-over from primary to secondary production
site.
-
Designed and implemented all software necessary to
maintain the above sites, including automated code
push, monitoring and remote re-installation of
systems.
-
Wrote complete documentation for above
infrastructure for business partners wanting to
implement similar infrastructure.
-
Designed and built global load balancer, balancing
traffic between sites.
-
Trained IT staff in use and maintenance of DNS
(BIND). Was ultimately responsible for internal and
external DNS servers.
-
Created necessary procedures for the junior IT staff
for the day-to-day support of the Linux and Unix
infrastructure.
-
Wrote Administration, Reference, and Operations
guides for above infrastructure for use at third-party
sites.
-
Taught classes for above infrastructure to system
administrators from third-party sites.
-
Successfully grew the above infrastructure to handle
an increase of traffic to 1000 times the original
load.
-
Taught the IT staff in topics such as Linux System
Administration, Network Troubleshooting, DNS
maintenance & troubleshooting, and Perl
programming.
RightOrder, San Jose, California; June 2000 to April
2001
Senior System Administration
Solaris on i86pc & Sparc, Linux server with Apache,
WebLogic and Oracle Database. Accomplishments include:
-
Designed and built internal Corporate Linux &
Unix server infrastructure on Solaris & Linux with
centralized support (NFS, NIS, Sendmail 8.x, DNS 9.x,
NTP, Apache, Firewall, etc).
-
Responsible for Linux & Unix and network
security of Corporate and Production
Infrastructure.
-
Created necessary procedures for the junior IT staff
for the day-to-day support of the Linux & Unix
infrastructure.
-
Collaborated with the VP of Production and the
Director of Systems and Technology on budget and
business strategy for the design and implementation of
the Production ASP style Infrastructure.
-
Designed and managed implementation of a
Sustainable, Scaleable Web Server Infrastructure for
the RightOrder ASP Production with Perl, jumpstart,
ssh, rdist, rsync, cfengine, DNS, Sendmail and Big
Brother, automating system and installation and
configuration including Apache and WebLogic, etc.
-
Provided ongoing support of the production and
corporate servers.
-
Taught the IT staff in topics such as Network
Troubleshooting, DNS maintenance and troubleshooting,
Sendmail, and Production Infrastructure.
Why Not Creations, Milpitas, California; June 1999 to
June 2000
System Administration Manager
Solaris, Linux & BSD 4.4 servers with Apache,
NetDynamics and Oracle Database. Accomplishments
include:
-
Promoted from Senior Unix System Administrator to
System Administration Manager in January 2000,
responsible for the production server
infrastructure.
-
Build Linux & Unix based infrastructures
(Apache, NetDynamics and Oracle) for productions and
development servers (Solaris and Linux) in a 13 rack
co-hosted environment.
-
Configured Sendmail 8.x and Bind 8.x.
-
Built a centralized support model for Linux &
Unix servers, simplifying the day-to-day
management.
-
Ongoing support of the production and development
servers.
-
Teaching 14 2-hour mini courses to the entire IT
staff in topics such as Network Troubleshooting, DNS
maintenance and troubleshooting, Sendmail, and
Production Infrastructure.
Auspex Systems, Santa Clara, California; August 1998 to
June 1999
Senior Unix System Administrator
Auspex NFS Servers and Sun servers with Clarify on top
of Oracle Database, Veritas Volume
Manager. Accomplishments included:
-
Promoted to Technical Lead for the Unix server group
in November 1998.
-
Configured Bind 8 and NIS.
-
Configured Sendmail for Auspex worldwide and Auspex
postmaster for Santa Clara, United Kingdom and
Japan.
-
Responsible for Y2K compliance of Sun Servers and
development of Y2K upgrade strategies and monitoring
software. Built automated patch management software in
Perl.
-
Supported the Business System Groups servers,
including their Clarify and Oracle development, test
and production servers.
-
Ongoing education of users, helpdesk and Unix system
administration staff.
-
Coordinated the Unix group in the three months Tech
Services were without a Manager.
/sys/admin, inc., San Jose, California; October 1987 to
August 1998
Independent Unix System Administration Consultant
Worked with a large number of clients over an
eleven-year period. The environments were mostly Sun and
BSD 4.x networked environment, but included many other
platforms, such as HP-UX, Pyramid-OS, SCO UNIX, AIX,
etc. Accomplishments included:
-
Investigated and analyzed problems in the Unix
system administration support structure, and provided
written reports and recommendations to system
administration staff and senior management.
-
Recommended and documented new and existing
procedures and policies, and wrote software and
documentation for the day-today operations.
-
Reviewed existing hardware, and provided
recommendations on hardware selection and procedures
for hardware replacement.
-
Automated system administration tasks across the
network writing tools in Perl and C.
-
Made necessary changes in the system configuration
to simplify and automate administrative tasks, disk
management, mail configurations, printers, and
administration of system and network configuration
files across all machines.
-
Designed a commercial firewall, PrivateNet, for NEC.
Reviewed Public Socks Package as a possible product and
Redesigned Socks (SocksPlus) for better security and
easier configuration. Designed proxies for SMTP, FTP,
HTTP and Telnet. Repackaged BSD/OS (BSD 4.4) for the
firewall platform, including implementing a bootable
CD-ROM root file system. Designed a menu driven
configuration program that simplified configuration of
SocksPlus, all proxies, DNS and Sendmail.
-
Installed and maintained Firewalls (mainly based on
TIS Firewall Tool Kit, NEC PrivateNet Firewall and
Firewall-1 products) and performed security audit of
firewalls and internal networks.
-
Designed, configured, and troubleshot e-mail systems
for small and large organizations, using Sendmail and
DNS.
-
Configured and troubleshot NFS and NIS.
-
Planned and supervised a move of Unix machines to
computing center on a new campus.
-
Evaluated, recommended, and installed systems for
automatic site-wide backup (Amanda, Legato and Bud
Tools).
-
Wrote White Papers and positioning papers on various
system administration and security topics.
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