Senior Frontend Developer
Current
Dec 2024 - Present
AeroLeads people directory · profile
John Brennan Email & Phone Number
Senior Frontend Developer
at
Fidelity Investments
LinkedIn matched
✓ Verified July 2026
3 data sources
Profile completeness 86%
Current company
Role
Senior Frontend Developer
Location
Ireland
Company size
Who is John Brennan? Overview
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Quick answer
John Brennan is listed as Senior Frontend Developer at Fidelity Investments, a with 52767 employees, based in Ireland. AeroLeads shows a matched LinkedIn profile for John Brennan.
John Brennan previously worked as Senior Software Engineer at Avaya and Software Engineer at Avaya. John Brennan holds Higher Diploma In Software Design And Development, Applied Science from National University Of Ireland, Galway.
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Email format at Fidelity Investments
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Fidelity Investments
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Profile bio
About John Brennan
I have a passion for cutting edge technologies and am eager to work with a innovative, creative and driven team.
Current workplace
John Brennan's current company
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Fidelity Investments
8 roles · 19 years
John Brennan work experience
A career timeline built from the work history available for this profile.
Senior Software Engineer
Part of a team responsible for the delivery of front end applications in the Unified Client portfolio
Oct 2021 - Jul 2024
Software Engineer
• Involved in designing and developing Oceana Workspaces, a thin Contact Centre client built in AngularJS• Responsible for developing and maintaining the Oceana Client SDK built in JavaScript• Designed, developed and actively maintain Oceana Buzz, a server simulation tool
Jan 2015 - Oct 2021
Web Developer
• Involved in refactoring Paddy Power’s mobile accounts shared service system• Developed restful APIs in XLST powered by IBM’s Datapower• Developed client-side JavaScript Application using AngularJS framework• Adhered to business specifications and UI designs to deliver accurate UI components• Worked as part of an agile team that delivers stable, deployable code after every sprint
Mar 2014 - Jan 2015
Web Applications Developer
Psychwire
• Involved in the development of a social network for professionals in Mental Health • Developed server-side PHP code using the Yii framework• Developed client-side modular JavaScript to AMD standards• Worked with in-house designer, slicing PSD’s into HTML (JavaScript templates) and CSS • Integrated Web Applications with 3rd Party APIs/Services.
Jul 2012 - Nov 2013
Web Applications Developer
• Worked with a team of talented developers in an agile environment. • Helped to design and develop the codebase to Ex Ordo, an Academic Conferencing Suite.• Technologies employed: Padrino, Backbone.js and agile methodologies.
Jun 2008 - May 2012
Web Applications Developer
Starlight Solutions
• Involved in the development of JavaScript rich Web Applications.• Created Backend APIs and documentation for REST/SOAP queries.• Built Websites from Adobe Photoshop Designs to produce valid semantic HTML/CSS.• Involved in the Development of a JavaScript/PHP based Content Management System.• Maintained and managed a backup solution for multiple Linux web servers.
2008 - 2012
~4 yrs
It Specialist
Performed frequent tasks in the areas of Public, Contractor and Staff Safety.Involved in the development of a database for ESB staff, vehicles and equipment records.Responsible for keeping Contractor’s documentation and reports up-to-date on a shared database.
Apr 2005 - Sep 2005
Team & coworkers
Colleagues at Fidelity Investments
Other employees you can reach at fidelity.com. View company contacts for 52767 employees →
LR
Lori Rump
Colleague at Fidelity InvestmentsLatonia Lakes, Kentucky, United States
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LH
Lauryn Hull
Colleague at Fidelity InvestmentsVancouver, Washington, United States
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CS
Charan Singh
Colleague at Fidelity InvestmentsCary, North Carolina, United States
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VB
Vince Belgera
Colleague at Fidelity InvestmentsKnightdale, North Carolina, United States
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JG
Jack Groom
Colleague at Fidelity InvestmentsDenver, Colorado, United States
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JP
Johnna Padvaiskas
Colleague at Fidelity InvestmentsKeene, New Hampshire, United States
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AS
Anmoldeep Singh
Colleague at Fidelity InvestmentsKitchener, Ontario, Canada
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SM
Satish Mandapaka
Colleague at Fidelity InvestmentsDurham, North Carolina, United States
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CG
Chris Gaines
Colleague at Fidelity InvestmentsFort Worth, Texas, United States
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N"
Nicholas "Nico" Echevarria
Colleague at Fidelity InvestmentsNorristown, Pennsylvania, United States
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Lori Rump
Colleague at Fidelity InvestmentsLatonia Lakes, Kentucky, United States
View →
LH
Lauryn Hull
Colleague at Fidelity InvestmentsVancouver, Washington, United States
View →
CS
Charan Singh
Colleague at Fidelity InvestmentsCary, North Carolina, United States
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VB
Vince Belgera
Colleague at Fidelity InvestmentsKnightdale, North Carolina, United States
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JG
Jack Groom
Colleague at Fidelity InvestmentsDenver, Colorado, United States
View →
JP
Johnna Padvaiskas
Colleague at Fidelity InvestmentsKeene, New Hampshire, United States
View →
AS
Anmoldeep Singh
Colleague at Fidelity InvestmentsKitchener, Ontario, Canada
View →
SM
Satish Mandapaka
Colleague at Fidelity InvestmentsDurham, North Carolina, United States
View →
CG
Chris Gaines
Colleague at Fidelity InvestmentsFort Worth, Texas, United States
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N"
Nicholas "Nico" Echevarria
Colleague at Fidelity InvestmentsNorristown, Pennsylvania, United States
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2 education records
John Brennan education
Higher Diploma In Software Design And Development, Applied Science
Bachelor Of Engineering, Electronic And Computer Engineering
FAQ
Frequently asked questions about John Brennan
Quick answers generated from the profile data available on this page.
What company does John Brennan work for?
John Brennan works for Fidelity Investments.
What is John Brennan's role at Fidelity Investments?
John Brennan is listed as Senior Frontend Developer at Fidelity Investments.
Where is John Brennan based?
John Brennan is based in Ireland while working with Fidelity Investments.
What companies has John Brennan worked for?
John Brennan has worked for Fidelity Investments, Avaya, Paddypower, Psychwire, and Ex Ordo.
Who are John Brennan's colleagues at Fidelity Investments?
John Brennan's colleagues at Fidelity Investments include Lori Rump, Lauryn Hull, Charan Singh, Vince Belgera, and Jack Groom.
How can I contact John Brennan?
You can use AeroLeads to view verified contact signals for John Brennan at Fidelity Investments, including work email, phone, and LinkedIn data when available.
What schools did John Brennan attend?
John Brennan holds Higher Diploma In Software Design And Development, Applied Science from National University Of Ireland, Galway.
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