Matthew O'Brien
Details
IBM
Cybersecurity Incident Response Team - Office of the CISO
2022 : 2023
IBM
Advisory Software Engineer - Premium Account Technical Account Manager
2014 : 2023
IBM
Advisory Software Engineer - Premium Account Technical Solutions Manager
2000 : 2014
IBM
Systems Support Engineer Subject Matter Expert
1996 : 2000
Sequent Computer Systems
Systems Support Engineer
About
I have enjoyed 25 years’ experience in Software and OS support in various flavors of UNIX, including AIX, Linux, DYNIX/ptx and Solaris. I have been recognized for my initiative and exceptional analytical and problem-solving skills. I am very experienced working as part of a team, supporting external customers with mission critical, high-end systems, often in high pressure situations. In 2013, I received the IBM Means Service Award in recognition of outstanding achievement.
Specialties: .
• Extensive technical knowledge of Unix operating systems and system services including
• Kernel
• Boot process
• Logical Volume Manager (LVM)
• JFS/JFS2 file systems
• Automount
• NFS
• Security
• Auditing and accounting
• TCP/IP and network protocols including SMTP, FTP, TCH, RSH, SSH, etc)
• NTP
• DNS
• Experience with operating system installations, migrations, update and restoress using Network Installation Manger (NIM) and mksysb
• Experience with High Availability clustering technologies such as IBM PowerHA System Mirror and Oracle RAC
• Experience with Virtualization (PowerVM)
• Experience with installation and configuration of Hardware Management Console (HMC) as well as LPAR creation and deployment
• Experience in installing and configuring WPARs
• Familiarity with enterprise virtual storage configurations including Fiber Channel SAN using EMC, Hitachi, and IBM storage arrays, EMC PowerPath software and IBM MPIO
• Familiar with performance debugging and tuning commands (perfpmr, topas) to identify and resolve performance issues
• Familiarity with network tuning and troubleshooting across WAN and LAN environments
• Understanding of kernel level features such as virtual memory manager, CPU scheduling algorithms, and lock contention.
• Experience with common debugging tools such as kernel traces, network trace, Wireshark, dbx, KDB
• C programming language and UNIX shell script programming