John Brennan
Senior Frontend Developer at Fidelity Investments
Ireland
Summary
👤
Senior🎓
Top SchoolJohn Brennan is a Senior Frontend Developer based in Ireland with 13 years of experience building rich web applications and client SDKs for enterprise products. He has led frontend delivery at Avaya and now drives modern UI development at Fidelity Investments, with deep hands-on experience in AngularJS, JavaScript SDKs, and RESTful integrations. His background spans both startup-style product development and large-scale contact centre and financial systems, giving him a pragmatic blend of engineering discipline and rapid delivery. He’s known for designing developer-facing tools—such as a server simulation tool used to validate complex client behaviour—and for refactoring legacy systems into maintainable, testable frontends. With formal training in electronic and computer engineering and a Higher Diploma in Software Design, he pairs solid academic foundations with a track record of shipping production-grade interfaces.
13 years of coding experience
16 years of employment as a software developer
Higher Diploma in Software Design and Development, Applied Science, Higher Diploma in Software Design and Development, Applied Science at National University of Ireland, Galway
Github Skills (7)
atmosphere5
nodejs4
javascript3
mock-server3
jquery2
yii1
expandable1
Programming languages (1)
Github contributions (5)
jfmbrennan/generator-ngbp-module
Jan 2015 - Sep 2015
Opinionated angular module generator
Contributions:132 commits, 99 pushes, 3 branches in 7 months
jfmbrennan/atmosphere-javascript-mock
Apr 2016 - Aug 2017
Node Mock Server for Atmosphere Javascript Library
Contributions:37 pushes, 2 branches, 22 tags in 1 year 4 months
javascript-librarymock-serverjavascriptnodejsatmosphere
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