StormHarvester, a Northern Ireland tech company, has landed the top spot as the fastest growing technology company on the island. It is the first time in 25 years that a company from Northern Ireland has topped the Fast 50, since Newry-headquartered First Derivatives.
Belfast-based StormHarvester uses its advanced anomaly detection system to analyse data from thousands of sensors to help wastewater utilities predict and prevent issues like flooding and pollution.
The Deloitte Technology Fast 50 Awards, now in its 26th year, is one of Ireland’s foremost technology award programmes. It is a ranking of the country's 50 fastest-growing technology companies based on revenue growth over a four-year period. Previous winners include Wayflyer and Swoop.
In total there were nine companies from Northern Ireland on this year’s Fast 50 ranking: StormHarvester, Fibrus, Halo Technologies, TeamFeePay, Catagen, Barclay Communications, SciLeads, LocateaLocum and Syndeo.
StormHarvester showed revenue growth of 2,910% over the qualifying period. It is the first time in 25 years that a company from Northern Ireland has topped the Fast 50, since Newry-headquartered First Derivatives.
Reacting to the win, Brian Moloney, founder and CEO of StormHarvester, said: “Achieving the top spot in Deloitte’s Fast 50 ranking is a really special moment for all the team at StormHarvester. What started as an idea over ten years ago in Australia for a solution that would reduce the impact of flooding has grown into a proud Belfast-based business that is going from strength to strength. In the last year alone, our funding has enabled us to double our headcount, which will help us fuel our expansion further and create even more exciting opportunities in Ireland.
“The Deloitte Fast 50 Awards recognition is a chance to pause, reflect and celebrate all that we have achieved and all that we plan to achieve in the years ahead.”
Cumulatively, the Deloitte 2025 Technology Fast 50 winners generated €1.76 billion in total annual revenues. The average growth rate of the companies was 442%. The 50 companies employ over 7,500 people and 12 of the ranked companies were first time winners.
Aisléan Nicholson, partner and Fast 50 lead for Deloitte in Belfast, said: “The Deloitte Technology Fast 50 ranking celebrates innovation and entrepreneurship in the technology sector and recognises tech companies with sustainable revenue growth over four years.
“This data-driven methodology gives the Fast 50 a credibility that sets the programme apart and highlights not just the buzz around a tech company but also their readiness to scale globally.
“Congratulations to all the companies whose dedication and approach to innovation have earned them a well-deserved place on this year’s list. Particularly to StormHarvester, who are the second Northern Irish company to take the top spot since the programme began 26 years ago.
“Northern Ireland’s reputation as a hub for creative, homegrown technology continues to strengthen, and the achievements of those featured in the Fast 50 showcases the talent, expertise, and vision driving our local tech sector forward.”
In addition to announcing the ranking of the Fast 50 companies, the Deloitte Technology Fast 50 Awards included several award categories.
Protex AI, which uses AI to enhance workplace safety and operational efficiencies, won the Rising Star Award in association with Enterprise Ireland, having demonstrated a promising growth trajectory and the potential for inclusion in the Fast 50 rankings in years to come.
The Deloitte Technology Fast 50 ranking features both private and public listed technology companies that have demonstrated innovative strategies, sound management practices and marketplace vision, driving them to achieve the status of high-growth leaders. Full details on the winners can be found at www.fast50.ie.
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