Press Release 5 Dec 2023

Siren Wins Scale Up Award And Ranks 9th in Deloitte Technology Fast 50

Author: Rachel Kavanagh
Author Rachel Kavanagh
Siren Wins Scale Up Award And Ranks 9th in Deloitte Technology Fast 50
From left to right: Noreen Coleman, Head of People, David Stafford, CFO, John Randles, CEO, Rachel Kavanagh, CMO, Philip Hankey, R&D.

Siren attributes its growth to innovation around emerging threats and a global commercial ramp-up

Galway, Ireland, 4th December  — Siren today announced that it had won the Scale Up award, sponsored by Scale Ireland and was ranked number 9 in the 2023 Deloitte Technology Fast 50 Awards. The Fast 50 is a ranking of the 50 fastest growing technology companies in Ireland. Rankings are based on average percentage revenue growth over four years. 

Siren’s CEO, John Randles, credits his team’s dedication to proactively solving law enforcement and public safety challenges with the company’s growth over the past four years. He said, “We’ve increased our domain expertise ten fold over the last four years by investing in industry talent and upskiling our existing team. This allows us to solve problems faster and empathises with our customers in a way we couldn’t before.” 

John added that “We’ve also ramped up the commercial side of SIren with internal talent and partnerships. This has dramatically improved our ability to communicate our value and with increased reach. We’ve always known we have a great product and now we can simply sell it better and much further afield.”

John Randles, Siren CEO, with the Scale Up Ireland, Scale Up award at the Deloitte Fast 50 2023.

The Deloitte Technology Fast 50 Awards 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, and this year marks 24 years of the programme celebrating innovation and entrepreneurship in Ireland’s indigenous technology sector. 

Cumulatively, the 2023 Fast 50 winners generated over €3 billion in total annual revenues and now employ over 8,800 people. The average revenue of companies featured in the ranking was approximately €10 million, while the average growth rate of the companies over the last four years was 721%. The awards programme also saw 15 new entrants appearing on the ranking for the first time. The companies ranked identified finding, hiring and retaining top talent and international expansion as two of the biggest challenges they face trying to grow their company.  

Announcing the winners of the Deloitte Technology Fast 50 programme, James Toomey, Partner and Fast 50 lead, Deloitte said: 

“Congratulations to all the companies that ranked this year. The Fast 50 awards are an important and exciting moment for Ireland’s indigenous tech industry to reflect on the growth and challenges they have experienced over the past year. Even though this has been a difficult year for tech companies, there are encouraging indicators in these rankings that show the strength of Ireland’s indigenous sector and that our homegrown talent continues to play an important role in building the future of technology. Supporting this ecosystem is not just an investment in innovation, it’s an investment in our collective progress, and networks like Fast 50 are an ideal opportunity to connect and learn from other companies.”

In addition to announcing the ranking of the Fast 50 companies, the Deloitte Technology Fast 50 Awards included a number of additional award categories. The winners of these awards this year were:

Winner: Siren

This award recognises a company that has demonstrated an impressive ability to scale up or expand overseas over the last four years.

Winner: Brightflag

This award is for a company that has created or introduced a new or innovative product or service to international markets that has helped grow their business over the last four years.

Winner:  XOCEAN

This award is for a company that has made a significant impact within the current year.

Winner: Laura Haldane, Co-Founder and VP of Sales and Marketing, SciLeads

This award is given to an individual who has demonstrated through their actions that they are an advocate for increasing participation by and promotion of women in the technology sector.

Winner: ID-Pal

This award recognises a company with an innovative product or services that is having a disruptive impact within the financial services industry.  

Winner: Green Rebel

This award is given to a company who demonstrates a promising growth trajectory and the potential for inclusion in the Fast 50 rankings in years to come. 

Winner: Fenergo

This award acknowledges a company that has played a major role in the Fast 50 programme to date. 

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


Notes to editors

The Deloitte Technology Fast 50 Ranking 2023

RankCompany Name
2Moffett Automated Storage
4Mail Metrics
6ICS Medical Devices
11Alchemy Global Solutions
17Core Optimisation
18CR Payroll Solutions
19Reitigh Software
21Locate a Locum
33Cora Systems
38OneTouch Health
49DreamTec Systems

About the Deloitte Technology Fast 50 Programme

To enter the Fast 50 Awards, companies must meet the criteria listed below. Entries must be submitted electronically via the application link at, with the necessary supporting documents.

Fast 50 awards criteria:  

1. The company must have accounts covering a minimum of four years (i.e. four full twelve-month financial periods). 

2. The company must be considered a technology company which, for this purpose, is defined as a company that meets at least one of the following four criteria: 

NB: Companies using third party technology or intellectual property in a unique way do not meet this definition. Consulting companies, professional services firms, resellers and others who don’t rely on proprietary technologies to generate their revenue are not eligible. 

3. The parent company must be Irish-owned and have its headquarters in Ireland. 

NB: Companies headquartered in Northern Ireland can take part in the Irish OR the UK programme, but need to choose one or the other and cannot enter both. 

4. The company must not be a subsidiary of a larger group. 

NB: If there is more than one trading company in a group of companies, the nomination should reflect consolidated revenue for year 1 and 4 and not the revenue of a particular company within the group. 

5. The company must have base-year (year 1) operating revenues of €50,000 (£43,000) or more and a current year (year 4) operating revenue of at least €1,000,000 (£859,900). Operating revenue figures must be calculated on a consistent basis. Please disclose in your application any change in revenue recognition between the year 1 and year 4 accounts. 

NB: the accounts for the base-year must have an accounting period ending between 1 June 2019 and 31 May 2020; and the accounts for the most recent financial year must have an accounting period ending between 1 June 2022 and 31 May 2023. 

6. All submissions must be accompanied by signed accounts for the first and last financial year being measured in the competition. Where accounts are not audited, a cover letter must be provided. This cover letter should be on company headed paper, signed by a director of the company, stating and confirming the revenue figure per the accounts. Where only abbreviated accounts are available (with no profit and loss statement shown), please provide alternative financial information supporting the revenue figure presented, for example, management accounts used by the company, along with the cover letter described above. 

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About Siren

Siren is a complete investigation solution, safeguarding people, assets and networks. Siren links data from open source, vendor and classified sources allowing analysts and investigators to analyze risks, threats and crimes for the National Security, Public Safety, Fraud and Compliance, and Cyber Threat communities. Siren’s patented technology is uniquely search based providing the user with easy to use search, analytics, visualization and reporting capabilities for investigations on all types of data at scale and volume. 

In November 2022, Siren was also included in the Deloitte Technology Fast 50. Siren was named as a Gartner Cool Vendor in an Analytics and Data Science Report in 2020.  

For more information, visit

About Deloitte

At Deloitte, we make an impact that matters for our clients, our people, our profession, and in the wider society by delivering the solutions and insights they need to address their most complex business challenges.   

As the largest global professional services and consulting network, with approximately 457,000 professionals in more than 150 countries, we bring world-class capabilities and high-quality services to our clients.   

In Ireland, Deloitte has approximately 3,000 people providing audit, tax, consulting, and financial advisory services to public and private clients spanning multiple industries. Our people have the leadership capabilities, experience and insight to collaborate with clients so they can move forward with confidence.  

In this press release references to Deloitte are references to Deloitte Ireland LLP. The information contained in this press release is correct at the time of going to press. Deloitte Ireland LLP is the Ireland affiliate of Deloitte NSE LLP, a member firm of Deloitte Touche Tohmatsu Limited, a UK private company limited by guarantee (“DTTL”). DTTL and each of its member firms are legally separate and independent entities. DTTL and Deloitte NSE LLP do not provide services to clients. Please see to learn more about our global network of member firms. 


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