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Tim Leo Email & Phone Number
L3 Unix Infrastructure Engineer and VP at Citi
at
Citi
1 work email found
@citigroup.com
2 phones found area 469
LinkedIn matched
✓ Verified August 2026
4 data sources
Profile completeness 100%
Current company
Role
L3 Unix Infrastructure Engineer and VP at Citi
Location
Dallas-Fort Worth Metroplex, United States
Company size
Who is Tim Leo? Overview
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Quick answer
Tim Leo is listed as L3 Unix Infrastructure Engineer and VP at Citi at Citi, a with 201877 employees, based in Dallas-Fort Worth Metroplex, United States. AeroLeads shows a work email signal at citigroup.com, phone signal with area code 469, and a matched LinkedIn profile for Tim Leo.
Tim Leo previously worked as L3 Unix Infrastructure Engineer/ VP at Citi at Citi and Investor at Tim Leo. Tim Leo holds B.S.E.E., Digital Electronics & Electrical Engineering from The University Of Texas At Arlington.
Company email context
Email format at Citi
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{first}.{last}@citigroup.com
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AeroLeads found 1 current-domain work email signal for Tim Leo. Compare company email patterns before reaching out.
Profile bio
About Tim Leo
I am now focused on advanced virtualization projects for Citibank's Global Unix Infrastructure Team.I have over 35+ years of experience working with IBM and it's customers. As an "Above Country" Consultant, I was the WW Performance Service Delivery Technical Lead for IBM POWER (AIX, VIOS, Linux & IBM i) platforms & also delivered PowerVM Virtualization implementation, training and other Unix skills.Specialties: PowerVM Virtualization, Performance Tuning for AIX and Linux, Database integration, tuning and migration, C/C++ Programming, Scripting, Cross Platform & Complex Systems Integration Projects.
Listed skills include Aix, Virtualization, Unix, Performance Tuning, and 37 others.
Current workplace
Tim Leo's current company
Company context helps verify the profile and gives searchers a useful next step.
Citi
10 roles
Tim Leo work experience
A career timeline built from the work history available for this profile.
L3 Unix Infrastructure Engineer/ Vp At Citi
Investor
Tim Leo
Very experienced IT.Engineer seeking remote work on Unix systems.
Jan 2020 - Jun 2020
Field Technical Specialist
Jan 2018 - Jan 2020
Avp L3 Systems Admin / Global Unix Infrastructure Team
Advanced Migration Projects for POWER systems. Advanced support of Virtualization Environments
Apr 2016 - Dec 2017
Apr 2015 - Mar 2016
Managing It Consultant, Stg Lab Based Services
Worldwide Performance Services Delivery Technical Lead for AIX, VIOS & Linux on IBM POWER platform; Consulting services also include Advanced PowerVM Virtualization, Unix Application porting, Data Migration and troubleshooting.
Feb 2008 - Apr 2015
Sr. It Specialist : Advanced Tech Support (Ats)
AIX and Linux Performance Tuning in System p Benchmark Center o Strong Oracle DBA skills, some DB/2 and Sybase skills o Professional Application and Device Driver Porting, typically C/C++ to AIX Platform. o Exploit IBM VA C/C++ compiler technology and AIX kernel capabilities. o Disk Subsystem tuning for IBM DS, EMC and HDS storage strategies o Exploit the latest PowerVM Features such as Dynamic LPAR, SMT, and VIOS. o Competitive Marketing support and testing against Sun, HP and EMC. o Experience with a wide range of ISV’s, BP’s, Customers and Applications environments (eg. Multi-tier, SCON, Blades, etc.) o Experience leading Benchmark Projects, Crit-Sit Resolution, Design Reviews, and Solutions Assurance. o Subject Matter Expert for AIX Performance and Kernel Internals, WLM, Programming Languages, Communications, Solutions Assurance. o NIM Server Installation and Maintenance skills
Aug 1993 - Feb 2008
Staff Engineer For Space Station Program (Fsd)
o Device Driver developer for Ground Based Simulationso Complex Systems Integration Projects o Multivendor Connectivity, Interoperability and Demonstrationso Justifying and Appropriating Capital for H/W, I/S and Capital Planning
Apr 1986 - Aug 1993
Junior Engineer In Research Division
Semiconductor Science and Technology responsible for: o Hardware and Software Consultation o Lab Automation, Data Acquisition and Silicon device testing in the Advanced Semiconductor Technology Lab (ASTL).Central Scientific Services Electronics Dept. : Electronics Repair & Fab Technician
Jun 1978 - Apr 1986
Team & coworkers
Colleagues at Citi
Other employees you can reach at citigroup.com. View company contacts for 201877 employees →
RH
Rhian Hartshorn
Colleague at CitiNew York, United States
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DJ
Divya Jain
Colleague at CitiJersey City, New Jersey, United States
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JA
Janel Ang
Colleague at CitiSingapore
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JQ
Jairo Quiros
Colleague at CitiCosta Rica
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MC
Michelle C. Maull
Colleague at CitiNorfolk City County, Virginia, United States
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GL
Giovanni Levy
Colleague at CitiMiami, Florida, United States
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NM
Natalia Martinez
Colleague at CitiWesley Chapel, Florida, United States
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AA
Andrés Alvarado
Colleague at CitiMoravia, San Jose, Costa Rica
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JD
Jonathan Donoghue
Colleague at CitiUnited States
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NA
Noel Anthony Cordova
Colleague at CitiRichmond, California, United States
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Rhian Hartshorn
Colleague at CitiNew York, United States
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DJ
Divya Jain
Colleague at CitiJersey City, New Jersey, United States
View →
JA
Janel Ang
Colleague at CitiSingapore
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JQ
Jairo Quiros
Colleague at CitiCosta Rica
View →
MC
Michelle C. Maull
Colleague at CitiNorfolk City County, Virginia, United States
View →
GL
Giovanni Levy
Colleague at CitiMiami, Florida, United States
View →
NM
Natalia Martinez
Colleague at CitiWesley Chapel, Florida, United States
View →
AA
Andrés Alvarado
Colleague at CitiMoravia, San Jose, Costa Rica
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JD
Jonathan Donoghue
Colleague at CitiUnited States
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NA
Noel Anthony Cordova
Colleague at CitiRichmond, California, United States
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2 education records
Tim Leo education
B.S.E.E., Digital Electronics & Electrical Engineering
Hs, Technical Electronics
Saunders Trade & Technical Hs
FAQ
Frequently asked questions about Tim Leo
Quick answers generated from the profile data available on this page.
What company does Tim Leo work for?
Tim Leo works for Citi.
What is Tim Leo's role at Citi?
Tim Leo is listed as L3 Unix Infrastructure Engineer and VP at Citi at Citi.
What is Tim Leo's email address?
AeroLeads has found 1 work email signal at @citigroup.com for Tim Leo at Citi.
What is Tim Leo's phone number?
AeroLeads has found 2 phone signal(s) with area code 469 for Tim Leo at Citi.
Where is Tim Leo based?
Tim Leo is based in Dallas-Fort Worth Metroplex, United States while working with Citi.
What companies has Tim Leo worked for?
Tim Leo has worked for Citi, Tim Leo, Hewlett Packard Enterprise, Retired From Ibm, and Ibm.
Who are Tim Leo's colleagues at Citi?
Tim Leo's colleagues at Citi include Rhian Hartshorn, Divya Jain, Janel Ang, Jairo Quiros, and Michelle C. Maull.
How can I contact Tim Leo?
You can use AeroLeads to view verified contact signals for Tim Leo at Citi, including work email, phone, and LinkedIn data when available.
What schools did Tim Leo attend?
Tim Leo holds B.S.E.E., Digital Electronics & Electrical Engineering from The University Of Texas At Arlington.
What skills is Tim Leo known for?
Tim Leo is listed with skills including Aix, Virtualization, Unix, Performance Tuning, Linux, Servers, Hardware, and High Availability.
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