Thirteen years across telecom, fintech and consumer brands, leading product work for 130M+ users. I help teams make complex products easier to use and deliver better business results. I also use AI to prototype ideas and build tools that reduce routine work.

Trusted by

  • T-Mobile
  • Amdocs
  • Telus
  • Norlys
  • Hotwire
  • Bank of Ireland
  • Zoetis
  • FBD
  • Britvic
  • PepsiCo
  • Dr. Squatch

Projects that show how I think.

Each one covers the problem, the process, and what actually changed.

How I work.

Projects change. These five principles hold across briefs, teams and deadlines.

  1. 01

    What ships matters more than what’s perfect

    I ship the smallest useful version early, then use feedback and real-world evidence to improve it. Reviews help us choose a direction; seeing people use the product tells us what needs to change.

  2. 02

    Make intentional decisions

    Every design choice involves a trade-off. I make clear what we are giving up, who it affects and why, then document the reasoning so the team can discuss the decision together.

  3. 03

    Measurement as intervention

    Before designing, I agree with the team how we will measure improvement. Choosing the right measure matters: it shapes what we focus on and the decisions we make.

  4. 04

    Never settle for mediocrity

    Each release is a chance to improve the experience. I keep a running list of what needs attention and make time to address it, so the standard keeps moving forward.

  5. 05

    Build the tools, not just the screens

    When part of the job is repeatable, I build a tool to handle it. I use AI to build these tools, reducing routine work and giving people more time for decisions that need their judgment.

Tools which I use on a daily basis.

  • Figma
  • Adobe CC
  • Claude Code
  • Cursor
  • Slack
  • Jira
  • Trello

Numbers that matter.

13+

years in product and brand design

150M+

people designed for

2+

months cut from production time by a tool I built with AI

Colin Brennan

I solve problems.Design is how I do it.

My background spans product, brand and digital design. I enjoy untangling complex problems alongside product, engineering and research teams, taking the work from discovery and strategy through detailed UI and engineering handoff.

I use AI to analyse research, explore ideas and build high-fidelity prototypes. Working in code helps me understand how products behave and refine the details that matter.

Outside work, exercise and reading give me a change of pace and space to reflect.

Where I’ve worked.

Experience across product teams, agencies and independent practice.

  1. 2022 — Present

    Product Design Outcome Lead

    Amdocs · Full-time · Dublin, Ireland

    1. Product Design Outcome LeadPromoted 2026
    2. Product Designer2022 — 2025

    As Product Design Outcome Lead at Amdocs, I work directly with customers and business teams and take responsibility for the experience we deliver. I served as Amdocs’ lead UX designer on the team that redesigned T-Mobile’s digital and PDF bills, working with bill architects and developers through implementation and design QA. I designed and built Template Studio, which turns Figma designs into bill template code and replaces manual specifications and template building. I led delivery of Hotwire Communications’ first digital bill. I also took over as lead designer for MarketOne’s enterprise partner platform.

    • Template Studio cut an estimated two months or more from bill production
    • T-Mobile billing redesign reached 130M+ customers
    • End-to-end delivery for Hotwire Communications
    • MarketOne enterprise partner platform
    • AI-assisted digital billing concept for Norlys
    • Three AI demos staged at Mobile World Congress
    • Internal AI agents and tooling adopted beyond the design team
  2. 2020 — 2022

    Lead Designer — UI/UX, Digital & Brand

    Traction · Contract · Dublin, Ireland

    Led design for FBD, Zoetis and The Irish Farmers Journal, from concept to delivery across web platforms, digital campaigns, brand systems and print. Managed client relationships directly and connected design decisions to performance and growth goals.

    • Lead designer on three national client accounts
    • End-to-end UI/UX, digital, brand and print delivery
    • Creative aligned to client performance and growth objectives
  3. 2020 — 2022

    Designer — UI/UX, Email & Lifecycle

    Longplay · Contract · Remote (Canada)

    Designed campaigns and lifecycle experiences across health, lifestyle and e-commerce, including work for Dr. Squatch, Groove Life, Cannuka and Wholesome Culture. Built automated welcome, win-back, seasonal and Black Friday journeys, and shaped the creative direction for each brand.

    • Automated lifecycle journeys generating millions in revenue
    • Design direction across a wide range of e-commerce brands
    • Welcome, win-back and seasonal flows built and tested
  4. 2020 — 2022

    Designer — Brand & Marketing

    OLIVER Agency · Contract · Dublin, Ireland

    Delivered digital and campaign design for Bank of Ireland, Britvic and PepsiCo. Applied Bank of Ireland’s new identity across customer touchpoints reaching more than two million customers. The work included campaigns, data visualisation, animation, video and branded content across digital and print.

    • Rebrand assets reaching 2M+ Bank of Ireland customers
    • Campaigns across digital and print for three national brands
    • Animation, video and branded content alongside marketing teams
  5. 2020 — 2022

    Designer & Creative Consultant — Brand & Digital

    ColinBCreative · Independent practice, alongside the roles above

    Ran an independent practice alongside agency and in-house roles, delivering brand identities, websites, campaigns and marketing collateral across a range of industries. Managed each engagement from start to finish and advised on brand strategy and positioning when clients needed help defining the business problem.

    • Engagements scoped and delivered end to end
    • Brand strategy, positioning and design direction consulting
    • Long-term client relationships built on repeat work
  6. 2013 — 2020

    Studio Manager — Brand, Web & Marketing

    Clear Designs · Full-time · Dublin, Ireland

    1. Studio ManagerPromoted 2016
    2. DesignerFrom 2013

    Led creative delivery and client relationships at an agency that grew through to acquisition. Directed web, brand, print and marketing projects while running the studio day to day, including pitching, resourcing and mentoring junior designers.

    • Hands-on role in agency growth through to acquisition
    • Studio management: pitching, resourcing and delivery
    • Mentored and coached junior designers

What people say.

“Colin instantly understands the vision and delivers flawless, on-brand design.”
Alec TorelliEntrepreneur, Investor & Speaker
“A rare mix of creativity, precision, and professionalism — always exceeds expectations.”
Adele WardHead of Marketing,CSI Manufacturing
“Consistently world-class design with clear communication and genuine passion.”
Andrew McCannEmployment Consultant & Author,Citizens Information Service