Delivering creative,

award-winning results.

Based in Dublin, we’re one of Ireland’s leading digital agencies. We plan effective digital strategies, produce engaging content, build memorable brands and create results-driven campaigns. Learn more about us.



Digital Strategy

Online Campaigns


In-house Workshops & Training

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Social Media Management

Content Creation

Facebook & Instagram Ads

Influencer Marketing

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Web Development

E-Mail Marketing


Lead Generation

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Graphic Design

Web Design/UX

Branding/Logo Design


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Lolly and Cooks

In Design / Digital / Social / Strategy

Kerala Kitchen

In Design / Digital

Serena Fashion Boutique

In Design / Digital

Cooley Oysters

In Design / Digital

Ciarán Cuffe MEP

In Design / Digital


In Digital / Social / Strategy

Craft Central

In Design

The Networking Institute

In Digital / Social / Strategy

We’ve worked with

some amazing clients.

We work with businesses and organisations across a broad range of sectors including technology, healthcare, retail, hospitality and professional services, as well as various charities, educational institutes and nonprofits.

Comfort Keepers Homecare logo

About Us.

Founded in 2014, CASTLE33 is one of Ireland’s leading digital agencies based in Dublin City. We’re a highly creative and collaborative agency that builds brands and creates customers through strategy, social, digital and design.

Find Out More

Read Our Journal.

The digital landscape is constantly changing, that’s why we aim to keep our finger on the pulse at all times. Check out our journal to learn about the latest news, trends, best-practice tips and behind-the-scenes action at CASTLE33.

Visit Our Blog

Get In Touch.

You’ve seen who we are, what we do and who we work with. Now it’s your chance to get involved. If you’d like to find out more about how we can help your business, get in touch with us today. Here’s to the beginning of a great new friendship!

Contact Us