C# Open Source
Resume:
BRADFORD L. ARRINGTON III
*******@*****.***
Skype: brad.a3
Linkedin: https://www.linkedin.com/in/brad-arrington-b461802/
Experience:
** ***** *****: 1997 – 2019
** ***** *******: 2000 – 2019
14 years C: 1995 - 1997, 2001, 2002, 2004-2012, 2014,2017,2019
10 years Solaris: 1997, 1999, 2005-2013
13 years PostgreSQL: 2004 – 2012, 2014, 2015, 2017-2019
6 years Forensics: 1999, 2000, 2007, 2009-2012
6 years FreeBSD: 1999, 2000-2001, 2009, 2014-2015
7 years MySQL: 2000, 2006-2011, 2015,2018
6 years Ruby: 2004, 2007-2012
4 years Management: 1998, 2004, 2005-2006
1 year Docker : 2015-2016,2017
6 years C#: 2013-2019
4 years Xamarin 2015-2019
2 years Amazon AWS: 2015-2016,2018
1 year Azure 2018-2019
3 years Python: 2016-2019
Open Source Projects:
https://github.com/bradla/skey (C# Xamarin)
https://github.com/bradla/OpenBSD-Hammer2 (C port of DragonflyBSD hammer2 filesystem)
Total Experience of more than 20 years.
Computer Skills and Abilities:
Certifications: Redhat RHCT, Linux+, Ethical Hacker(CEH)
O/S: ArchLinux, OpenBSD, SLES 11/12, Redhat/Centos Linux, Various other distros Linux, FreeBSD, DragonflyBSD
Hardware: Intel, AMD64, ARM
Networking: IPv4/6, Packet filter (OpenBSD/Linux), Load Balancers (Linux/OpenBSD), IP Tables
Utilities: Systemtap, DNS, nginx, Cherokee, Apache, PGP, Email (Qmail, Sendmail), LDAP, Nagios, Subversion, CVS, SSH, DHCP, Samba, NFS, NIS, Squid, Tomcat, Radius, Autofs, ZFS, GIT, Metasploit, nmap, hping, Ansible
Languages: C, bash/csh, C# .Net, SQL, Bash, Python, Powershell
Databases: PostgreSQL, MySQL, (some)Oracle, DB2, Sybase
Clustering (and loadbalancing): Drbd, Heartbeat, CARP/PF, Glusterfs, Hammer, HAProxy, Keepalived, relayd,CARP, Netezza, Single Image Cluster, AWS, Azure, GFS
Automation: C, Python, C#, Ansible
Embedded: Smartphone Application development C# (iPhone/iPad, Andriod, Windows Phone) Xamarin, Some experience with Swift
Professional Experience:
Phoenix,AZ
Valore Partners Oct 2024 – Jan 2025
-Converting Python, Perl, and C to C# on Linux systems.
Mphasis Jan 2020-Oct 2024
Build/Programmer C#,Typescript,Python
-Manage Bamboo and Pivotal builds, debug build programs in C#, Typescript.
-Automate tasks in Python & C#.
Mesa, AZ
Self Employed Sept 2019-Present
Programmer C#, Python
-Writing UWP app in C# SKey was the first one more will be added soon.
-Automation Python/C#/Azure
Chandler AZ
ArTech WellsFargo Mar 2019- Sept 2019
Linux Admin/Programmer various languages BASH, C#, C,Python
-Python parsing data files SQL, AutoSys, Ab Initio
-Automation with Python/Korn Shell
-Gathering and analyzing user/business system requirements
-Design, develop, document, test and debug new and existing software systems
-Responding to outages and coordinating return to service
-In-depth technical and/or business knowledge within their respective areas of specialization
Phoenix AZ
WiPro July 2018- Jan 2019
Linux Admin/Programmer various languages BASH, C#, C
-Fix Linux and open source technical issues (find out why different software is broken and fix it)
-Automation with python/bash/Anisble (Infrastructure Automation)
-Linux Administration Redhat, FreeBSD, Ubuntu
-Visual Studio 2019
Scottsdale AZ
Insight Global/PayPal (DevOps Python/C#) Site Reliability March 2018- July 2018
-ServiceNow and other automation
-Automation with C#, Python, Ruby, Git
-Terraform, AWS
-Linux Administration Redhat, Ubuntu
Tempe AZ
Kore1 / GoDaddy (DevOps Python/C#/Javascipt) Site Reliability April 2017- August 2017
-ServiceNow programs (Javascipt) REST API
-C#, Python, and some Go, Git
-Linux admin Redhat
-PostgreSQL to parse unstructured logs
-Xamarin (Visual Studio)
Phoenix AZ
AMEX (Application Architect/DevOps Python/C#) June 2016 – November 2016
-Automation programs (Python, C, C#, Bash, Linux Redhat, Windows) (Infrastructure Automation)
-Automation programs where mostly for Big Data Map Reduce NoSQL, Hive, Pig, Spark, Hadoop
-Wrote programs to augment and extend Splunk
-Convert/Upgrade from old Nagios install to Icinga2. (Wrote conversion program also)
Long Beach CA
Melina Health (Mobile Programming Xamarin Programmer (Android and iOS) May/June 2016)
-Wrote and debugged Xamarin Forms in C#
-Looked at performance issues with their current program
-Added Google analytics and debug issues they were having
Chandler AZ
Large Semiconductor Manufacturer (Programmer C#/Bash) December 2015 – April 2016
Software Engineer
Bash/Python/Linux Suse/ Redhat Ubuntu /C# Wrote Linux Installer (collaborate with offshore testers)
Windows automation program in Python and C# .Net (2015)
Setup and integrated Amazon AWS into the projects
Documented how to use Amazon AWS manually and automatically
Phoenix AZ
Encore Capital Group Feb 2014 –November 2015
(DevOps C#/BASH)
Linux Redhat/Centos, SLES 11,12/FreeBSD
Collaborate with offshore Admins and programmers
Created Docker Containers for WebSphere, DB2, etc..
-Wrote programs to automate system administration. (Infrastructure Automation)
Created secure website fail safe with OpenBSD hosting WordPress (converted all pages to static html)
Created automated install for WebSphere
Installed/Setup JBoss, Jenkins, Git
Managed IBM Netezza system
Setup basic things in DB2
Used PostgreSQL to debug issues with DB2 and code development
Wrote programs in C# to automate mail merges
Setup RedHat Satellite server SpaceWalk
Investigated running Puppet but decided it would be faster with shell scripts.
Correlating Excel data files with C# (rewriting this in Meteor JS currently)
Negotiated Linux license at about 90% reduction in cost yearly.
Used PostgreSQL to connect to DB2 pulling in large tables and testing database data with C# programs
Worked on securing systems for Linux/Unix for user accounts, active ports and application security.
Migrated DB2 to PostgreSQL
Debugged PowerShell scripts.
Technology used: Linux, WebSphere, OpenBSD, MySQL, PostgreSQL, C, Java, DB2, Perl, C#, Bash, Meteor
Scottsdale AZ
EBAY Feb 2011 – Feb 2014
Solaris/Linux Admin/Xamarin Programmer (DevOps C,Perl,Java,C#,Javascript)
Java/Bash/C programming, C#, Perl
Took 4th place in hackathon (Using Xamarin)
Wrote and fixed shell scripts in korn and bash shell.
Wrote and fixed Java programs.
Wrote and fixed Node.js application/ Meteor.
Managed C# web application.
Debugged PowerShell scripts
Fixed GPG/PGP issues
Worked on securing systems for Linux/Unix for logins, active ports and architecture.
Wrote prototype iPhone/Android, Windows Phone application to replace Node.js applications
Pittsburgh PA
Remote DBA Feb 2009 – Feb 2011
Unix/Linux/AIX/HP-UX Administrator
MySQL and PostgreSQL DBA/Architect Master-Slave, Master-Master, and Clustering.
Designed High Volume PostgreSQL database solutions.
Writing code for data collection and automation in C & Ruby
Linux clustering with Gluster, Heartbeat and DRBD, HAProxy
Migrated Oracle to PostgreSQL
Technology used: Linux Redhat/SLES, AIX, HP-UX, OpenBSD, Solaris, MySQL, Postgresql, Systemtap, C, Java, Ruby, Linux and BSD Clustering, ZFS, Dtrace.
Maya Nov 2008 – Jan 2009
Linux Programmer
Created a custom Linux ISO/Build image with systems automation with Linux and written in bash script only by the requirements of the client. Technology used: Linux, Bash, Ruby, Subversion.
Technology used: Linux, Bash, Ruby, Subversion.
San Francisco CA
8020 Media Aug 2008 - Nov 2008
Systems analyst/MySQL DBA
Linux/BSD Administration and web and database programming.
Wrote programs in C, Ruby.
MySQL, Postgresql databases.
Used Openbsd for failsafe(clustering) and pf for firewalls.
Technology used: Linux, C, PHP, Ruby, OpenBSD, Solaris.
Central CA
Cadence March 2005 – Aug 2008
Linux Engineer (DevOps C,Ruby,Bash)
Handle any level 3 (highest level open source trouble ticket), which include root cause analysis and the solution. Made many bug fixes to open source programs.
Used PostgreSQL as backend database to store archived mail wrote and maintained the system.
Autofs: Would segmentation fault on any /net access only on 32 bit SuSE linux and made patches to upstream version of the code. (See autofs mailing list)
Ported PPDD (partition encryption) to Redhat 3 and adapted it to Redhat 4 and Suse.
Ported dmidecode to Windows for a inventory program
Rewrote perl versions ypcat/match for LDAP in C cut the code from 3200 lines of perl to about 700 lines of C, and it compiled and ran on Linux, Solaris, AIX.
Collaborate with offshore support and programming staff
Fixed dead MySQL databases.
Load balancing with OpenBSD pf, hoststated & carp.
Smartcard bug fixes and implementation for Unix/Linux
Technology used:Linux Redhat/SLES, C, Ruby, LDAP, autofs, ipsec, OpenBSD, Solaris, ZFS, Dtrace.
Robert Half Technologies Jan 2003 – March 2005
Linux Systems Administrator (DevOps Ruby, C)
Fixed Linux backup systems, upgraded and optimizing their environment
(pumpitupparty.com) Fixed Unix/Linux backup systems, fixed MySQL database performance problems
(Quine Law Group) Ongoing project to fix their network, installing backups, email system, webserver, switched operating system from Linux to OpenBSD.
(Metropolitan Transportation Commision) Hired to solve any problems the IT and programming staff have. As well as train IT staff on Linux administration. Linux/Oracle Consultant. Used PostgreSQL to do benchmark testing
Wrote programs in C and Ruby.
Technology used: Linux Redhat/SLES, Oracle, C, Ruby, Java.
San Francisco CA
Wells Fargo Nov 2004 – Dec 2004
Hired a second time to do more work on LDAP systems with single sign-on.
Veracast March 2003
Visual Basic .NET programmer
Wells Fargo March 2002 March 2003
Sr. Linux Systems Administrator/Engineer
Implemented single sign on LDAP for Linux machines. As well as customizing software, such as custom GNOME 1 and GNOME 2 Desktop interfaces and LDAP interfaces, modified stock Kickstart images. Instrumental in designing Linux/Unix network. Managed 60-100 servers.
Technologies used: Linux, C, bash, DB2, x86 hardware, Apache, Tomcat, CVS, IP Tables, LDAP, PAM, Itanium (IA64) HP-UX, Kickstart.
Education:
Stockton Delta College: Course work included C/C++, Pascal, Calculus, and general studies, core requirements.
Miscellaneous:
Hardware / OS I once did use on a regular basis: AIX, Solaris 10,Slackware, Mandrake Linux, TurboLinux, BSDI, FreeBSD, HP-UX, VMS, IBM AS/400, Cisco Routers, Oracle 8i, Mathematica,Visual Basic,C++,Pascal
Backup Software: BRU-2000, Amanda, Veritas, Recovery of deleted/corrupted file and partitions.
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