Denise Mantrom
@denisemantrom
Senior iSeries Systems Engineer with 35+ years delivering resilient IBM systems.
United StatesWhat I'm looking for
I am a dedicated Senior iSeries Systems Engineer with over 35 years of experience managing IBM systems from System/34 through Power servers, focused on stability, migrations, and high availability.
I have led major migrations including Power9 to Power10 moves and the migration of 70 partitions between data centers using SRDF, Mimix, and system save/restore techniques, and I produce detailed upgrade and conversion documentation.
My technical strengths include OS/400 (IBM i) security, BRMS, VIOS, LPAR/HMC management, storage integration (EMC, DS8K, VTL), SSH/digital certificates, and performance tuning; I provide L3 support and root cause analysis for production issues.
I collaborate with customers, vendors, and internal teams, train operators and junior engineers, and prioritize disaster recovery and high-availability solutions to minimize downtime and ensure operational continuity.
Experience
Work history, roles, and key accomplishments
Sr. iSeries Systems Engineer
Pellera / Calibro
May 2025 - Present (10 months)
Migrated systems from Power9 to Power10, performed root cause analysis for production issues, and implemented Mimix and LPAR/HMC configurations; produced OS upgrades and conversion documentation for V7R4M0→V7R5M0.
Sr. iSeries Systems Engineer
Societe Generale
Aug 2023 - May 2025 (1 year 9 months)
Led Power9→Power10 migrations, provided L3 support and root cause analysis, and executed Disaster Recovery/HA role swaps using Global Mirror and iCluster while managing BRMS and IBM DS8K storage.
Sr. iSeries Systems Engineer
Bed Bath and Beyond
Managed IBM systems across generations, led migrations of ~70 partitions between data centers using SRDF, Mimix and full system restores, and maintained Lawson financial systems and enterprise high-availability configurations.
Education
Degrees, certifications, and relevant coursework
Orange County Community College
No Degree, Computer Science and Programming
1982 - 1982
Completed coursework in Computer Science and Programming at Orange County Community College in 06/1982; no degree awarded.
Newburgh Free Academy
High School Diploma, General Education
Earned a High School Diploma from Newburgh Free Academy.
Tech stack
Software and tools used professionally
Availability
Location
United StatesAuthorized to work in
Job categories
Interested in hiring Denise?
You can contact Denise and 90k+ other talented remote workers on Himalayas.
Message DeniseFind your dream job
Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!
