Your technology partner in Guernsey
Zenzero is proud to be part of the Guernsey business community, with a local office and over 75 experts based across the Channel Islands delivering trusted IT support, cyber security, and digital transformation services.
IT support
Keep your systems running smoothly with reliable IT support designed to minimise downtime and disruption.
Microsoft 365 support
Get more from Microsoft 365 with expert support designed to enhance collaboration and productivity.
Bespoke product development
Develop custom applications with tailored solutions designed to streamline processes and improve user experience.
Data management services
Unlock the value of your data with secure, compliant solutions designed to support better decisions.
Cyber security
Protect your business with tailored cyber security solutions designed to defend against evolving threats.
AI business solutions
Enhance your operations with AI solutions designed to improve efficiency, insight, and smarter decision-making.
Our work in Guernsey
We support businesses across Guernsey with tailored IT solutions that deliver real results – explore our case studies to see how.
St John Ambulance
Digital transformation partnership for emergency healthcare
Redwood Group
Strengthening cyber security and governance for a global compliance provider
Core Fund Services
Cloud-enabled IT foundation for a fast-growing financial services firm
Talk to our experts
Not sure where to start or what solution fits best? Speak with our local Guernsey team to talk through your needs and explore the right approach together.
Meet your Guernsey team
Olly Duquemin
Executive Director
Steve Brehaut
Managing Director, CI
Pierre Jehan
Sales Director
Matt Le Patourel
Managing Director, CI
James Kelsh
Information Security Director
Community: Our latest projects
We’re proud to be part of the local community and actively support charities and initiatives across each of our locations.
Guernsey’s Regeneration Project on Mansell Street
Supporting grassroot sport
Supporting St John Guernsey with free IT services and Cloud migration
IT Design Challenge 2025
Youth Commission bus stop project
Charity Partners 2025
About us
With strong local roots and a real understanding of how Guernsey businesses operate, we combine on-island expertise with global capability to help you succeed in an increasingly digital world.
From financial services to growing local enterprises, our clients benefit from innovative, secure, and scalable technology solutions that boost productivity, support growth, enhance customer experience, and protect the data and assets that matter most.
What our customers say
“Exceptionally well executed”
The project was very well planned, exceptionally well executed and smoothly implemented. The team were wonderful, the project was delivered on time and on budget, and we received great support all the way through. I couldn’t fault it.
Andrew Everton, Executive Director
“Faultless service”
Zenzero’s emphasis on a faultless service is consistently achieved through their highly committed team, their professionalism and their expertise. Mid Europa Fund Management is proud to be associated with Zenzero.
Steve Ozanne, Director
“Responsive, consistent and professional”
The core of our work is applying actuarial science to provide smart technical solutions for our clients. The very nature of what we do requires responsive, consistent and professional business support which is exactly what we receive from Zenzero.
Martyn Dorey, Managing Director
Contact us to explore your next digital transformation
Whether you’re improving cyber resilience, unlocking data insight, or integrating AI into your business, we’re here to help you plan your next move with confidence.