Hi, I’m

Damien O’Mahony.

Senior Full Stack Developer

Hi! My name is Damien O’Mahony and I’m from Macroom, Co.Cork. I have over 12 years experience in web development and I’m currently a Senior Full Stack Developer with Tricel Killarney. I also work on some graphic design in my spare time, so I guess you could call me both a Web Developer & Graphic Designer! To find out more about me, please click the button below.

About Me

Work Life

Having graduated with a Masters Degree in Interactive Media from UCC in 2017, I embarked on my professional career as a freelance web developer for one year. In April 2018, I took up the role of Graduate Web Developer in Tricel Killarney. Fast forward six years and I am still an integral part of Tricel, progressing to a Web Developer in 2019 and a Senior Full Stack Developer in 2022. I am the head of development and manage over 30 WordPress and 3 Magento websites for our group companies located across Ireland, the UK, France & Denmark. These range from lead generation websites to online shops and vary across multiple different languages. I also manage multiple web based apps and calculators. Throughout my career, I have conducted interviews for junior roles, mentored junior web developers and managed various projects.

I also volunteer with Macroom Golf Club as a Web Developer & Graphic Designer. This involves maintaining their website and creating posters, social media posts & graphics for upcoming events.

To learn more about my qualifications & skills, please click the button below.

Personal Life

I’m sports mad! I played football, hurling and soccer up until minor level before taking up golf, which is my favourite pastime. I’m a member of Macroom Golf Club and currently play off a handicap of 16 and I represented the club in team events in 2023.

I’m also a keen cyclist and have completed the Ring of Kerry Charity Cycle 4 times.

In May 2023, I took up running and ran 3 half marathons during the summer. I completed my first full marathon in Valencia, Spain last December in a time of 3:55:15. I’m training to complete 2 marathons in 2024!

I also love to travel and have visited 17 countries so far……and counting!

Qualifications & Skills

Master of Science in Interactive Media

2015 – 2017, University College Cork

Core Modules :

Web Development for Digital Media

Internet Based Applications

Human Computer Interaction

Graphics for Interactive Media

Mobile Multimedia


Digital Video Capture and Packaging

Digital Video Compression and Delivery

Audio and Sound Engineering

Audio Processing

3D Graphics and Modelling

Future and Emerging Interaction Technologies

Dissertation in Interactive Media

Higher Diploma in Applied Computing Technology

2014 – 2015, University College Cork

Core Modules :

Web Development

Internet Computing


Systems Organisation

Introduction to Relational Databases

Introduction to Programming

Computer Applications with Visual Basic

Database Design and Administration

Bachelor of Arts in English & Computer Science

2011 – 2014, University College Cork

Core Modules :


Computer Science



  • Javascript
  • HTML
  • CSS
  • SASS
  • PHP
  • MySQL
  • SSH
  • jQuery
  • AJAX
  • JSON
  • Bootstrap
  • WordPress
  • Divi
  • Elementor
  • WooCommerce
  • Magento
  • Project Management
  • JIRA
  • Bitbucket
  • GIT Version Control
  • Developer Tools
  • Cross Browser Development
  • Testing & Debugging
  • Rest APIs
  • Linux
  • Apache
  • Plesk
  • cPanel
  • Server Management
  • Server Migration
  • Google Tag Manager
  • Google Analytics
  • UX / UI Design
  • Responsive Design
  • Logo Design
  • Adobe Photoshop
  • Adobe Illustrator
  • Adobe InDesign
  • Adobe XD
  • Adobe Premiere Pro
  • Hubspot
  • Active Demand
  • Semrush
  • SE Ranking
  • Java *
  • Python *
  • Angular *
  • Swift *

* I have a working knowledge with these four, but a bit more practical experience is required


Senior Full Stack Developer

Tricel Killarney

December 2022 – Present

Main Responsibilities:

Project Management

Server management/migrations

Divi to Elementor website migrations

Continuous improvement to website speed and health scores (GT-Metrix & Semrush/SE Ranking)

Development of the Elvaro Tank Builder web app (https://tricelpumps.co.uk/elvaro-tank-builder/)

Hubspot Integration

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Web Developer

Tricel Killarney

April 2019 – December 2022

Main Responsibilities:

Implementation of WSJF (Weighted Shortest Job First) agile method for efficient task management

Conducting interviews for junior developer roles

Training and mentoring junior developers

Installation of WordPress Multisite Networks

Installation of new WordPress/Magento themes for website redevelopments

Website tracking using Google Analytics & Google Tag Manager

Active Demand Integration

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Graduate Web Developer

Tricel Killarney

April 2018 – April 2019

Main Responsibilities:

WordPress & Magento website updates

Translating XD prototypes into fully functioning web pages

Implementing GDPR compliancy across websites

Development of the WhichOil App (https://whichoil.ie/)

Document Control

General Bug Fixes

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Freelance Web Developer

DOM | Design & Development

March 2017 – April 2018

Main Responsibilities:

Development of new websites for
Macroom Golf Club and Macroom Buffalo Mozzarella

Establishing an online presence for Macroom Golf Club and Macroom Beef on social media platforms


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Macroom Golf Club

March 2017 – Present

Main Responsibilities:

Conducted user research, created wireframes and developed a new website for the club’s first rebrand in over 10 years

Maintaining and updating the website on a regular basis

Establishing an online presence for the club and posting regularly across different social media platforms

Creating posters, social media posts, videos and graphics for upcoming events

Designed a new scorecard, which was the first redesign in over 10 years


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My Work

Tricel Ireland
Tricel UK
Tricel EU
Tricel France
Assainissement Direct
Tricel Water
Tricel Water
Tricel Pumps
Tricel Lanark
Tricel Weston
Fibreglass Direct
Meterboxes Direct
Septics Direct
Tricel Composites
Macroom Golf Club
Water Tank Calculator
Fire Sprinkler Calculator
Elvaro Tank
The Lab
WhichOil App
Social Media
Print Materials

Get in Touch

If you would like to contact me, please fill out your details, and I will respond to you as soon as possible. Alternatively, you can send me a message on LinkedIn by clicking here. Thank you!