Senior Application Support Specialist
Advantage Technical
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John Mackey Email & Phone Number
Senior Application Support Specialist
at
Advantage Technical
1 work email found
@seic.com
LinkedIn matched
✓ Verified May 2026
3 data sources
Profile completeness 86%
Current company
Role
Senior Application Support Specialist
Location
United States, United States, United States
Who is John Mackey? Overview
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Quick answer
John Mackey is listed as Senior Application Support Specialist at Advantage Technical, based in United States, United States, United States. AeroLeads shows a work email signal at seic.com and a matched LinkedIn profile for John Mackey.
John Mackey previously worked as Senior Application Support Specialist at Sei and Tech Lead, Middleware & Application Support Team at Sei Investments.
Company email context
Email format at Advantage Technical
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{first_initial}{last}@seic.com
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AeroLeads found 1 current-domain work email signal for John Mackey. Compare company email patterns before reaching out.
Profile bio
About John Mackey
Senior Application Support Analyst with over 15 years of experience in providing technical support, system optimization, and incident management. Proven track record in leading projects, analyzing system outages, and improving performance metrics. Instrumental in troubleshooting and root cause analysis, enhancing application functionality, and streamlining workflows. Keen to leverage expertise to mature problem processes and drive continuous improvement.Available to discuss new opportunities in the Eastern PA area or virtual (remote), please contact me at jmackey.net@gmail.com. SKILLS:Team Leadership, Incident Management, Support Processes, Stakeholder Communication, Performance Monitoring, Analysis and Troubleshooting of Technical Issues, Continuous Improvement, Documentation & Training, Dynatrace, WebLogic, WebSphere, Spring MVC, WebSphere Portlet Factory, Web Content Manager (WCM), Eclipse, .Net, Putty, GIT, Postman, Java, JSP, JavaScript, XML, XSLT, SQL, HTML, VB/C#, Python, AJAX, JSON, jQuery, Dojo, Oracle SQL, Microsoft SQL Server, Oracle WebLogic, IBM WebSphere Portal, Windows Server, Tomcat, Apache, Linux, Azure, Service management frameworks, Change control procedures, Cloud Computing, Project Management, ITIL v4 Foundations, Root Cause Analysis, Database Administration
Listed skills include Websphere Portal, Software Development, Web Services, Lotus Notes, and 11 others.
Current workplace
John Mackey's current company
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7 roles
John Mackey work experience
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Senior Application Support Specialist
SEI INVESTMENTS - Private Banking division provides investment banking software and hosting for 40+ US-based banks and 15+ international banks.Senior Application Support Analyst, P1 Resolutions Team 2018 to PresentDelivered Tier 2/Tier 3 technical support and solutions for SEI's Investment Banking customers for the Wealth Platform suite of SAAS.
Tech Lead, Middleware & Application Support Team
Sei Investments
Delivered infrastructure and application support for investment banking multi-tiered enterprise applications. Automated the detection and alerting of infrastructure and application issues to reduce downtime by utilizing application performance monitoring software.-Troubleshot Tier 2/Tier 3 application issues by employing monitoring tools, software.
Jan 2016 - Jan 2018
Tech Lead, Development Team
Sei Investments
Lead developer for the End Client Website (ECW). Subject matter expert on IBM’s Websphere Portal development and infrastructure product.-Developed applications for ECW, using Java Spring MVC, jQuery, IBM Portlet Factory, dojo, and CSS for projects including Stock / Mutual fund Trading, End-Client Goals, Account Holdings, and Account Performance. Managed.
Apr 2013 - Jun 2016
Vice President Portal Development - End Client Website
Managed development and infrastructure teams of 20 resources to architect, develop, and support Citi’s Private banking web site involving WebSphere Portal, Web Content Management (WCM), Web Services, J2EE and open source technologies.
Jun 2011 - Apr 2013
Consulting Company
IBM Business Partner focusing on the Lotus brand technologies: Lotus Notes/Domino, Quickr, Websphere Portal, WCM, Connections.Proud to be a Lotus Notes 8.5 Design Partner.
Jan 2008 - Jun 2011
Portal Architect
May 2007 - 2008
FAQ
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What company does John Mackey work for?
John Mackey works for Advantage Technical.
What is John Mackey's role at Advantage Technical?
John Mackey is listed as Senior Application Support Specialist at Advantage Technical.
What is John Mackey's email address?
AeroLeads has found 1 work email signal at @seic.com for John Mackey at Advantage Technical.
Where is John Mackey based?
John Mackey is based in United States, United States, United States while working with Advantage Technical.
What companies has John Mackey worked for?
John Mackey has worked for Advantage Technical, Sei, Sei Investments, Citi, and Groupware Solutions Inc..
How can I contact John Mackey?
You can use AeroLeads to view verified contact signals for John Mackey at Advantage Technical, including work email, phone, and LinkedIn data when available.
What skills is John Mackey known for?
John Mackey is listed with skills including Websphere Portal, Software Development, Web Services, Lotus Notes, Enterprise Architecture, Db2, Portals, and Project Management.
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