Top 50 IT Services Companies in Northern Ireland
The Best of December 2025Looking for a top IT services company in Northern Ireland?
For your company to grow, it is essential to choose the best technology. Hiring an innovative IT services provider is the easiest way to ensure that you are making the best use of technology, increasing sales, and staying one step ahead of the competition.
To assist you in your search for a partner, we’ve compiled this list of the top IT consultants in Northern Ireland. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Northern Ireland IT Companies
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$1,000+50 - 249 employeesNaperville, ILRead More
BetterWorld Technology is a midsize IT managed services company launched in 2003. Their services include IT managed services, Cybersecurity, IT strategy consulting, and Compliance Consulting. The company is headquartered in Naperville, Illinois; Naperville, Illinois; Winter Park, Florida and Denver, Colorado.
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1$50,000+50 - 249 employeesBelfast, Northern IrelandRead More
Instil Software is a software engineering firm based in Belfast, Northern Ireland. Founded in 2005, Instil has about 30 employees that work across a variety of industries. They offer custom software development, mobile app development, cloud consulting and software integration, IoT, and web development.
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2$50,000+50 - 249 employeesLurgan, Northern IrelandGCD, a software development company, was launched in 1999. The midsize team offers Custom Software Development, Mobile App Development, Web Development, UX/UI Design, and more. The company is headquartered in Lurgan, Northern Ireland and Dublin 2, Ireland.Read More
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3$5,000+250 - 999 employeesNewcastle, Northern IrelandBased in Sydney, Australia and Newcastle, United Kingdom, APT Global Enterprise is an IT strategy consulting company. The midsize team focuses on IT strategy consulting and was founded in 2015.Read More
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4Undisclosed10 - 49 employeesNewcastle, Northern IrelandSmall IT managed services company Claremont, is located in Newcastle, Northern Ireland and Guildford, England. The team offers IT managed services and cloud consulting & SI.Read More
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City of EdinburghIndustries
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5$50,000+250 - 999 employeesBelfast, Northern IrelandMidsize software development firm Kainos, is based in London, England and Belfast, Northern Ireland. The team provides Custom Software Development and Web Development.Read More
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6Undisclosed2 - 9 employeesLisburn, Northern IrelandLaunched in 2022, Halson Tech is a web design agency. The small team provides web design, web development, IT managed services, and graphic design. The company is based in Lisburn, United Kingdom.Read More
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7Undisclosed10 - 49 employeesBelfast, Northern IrelandSmall Cybersecurity and IT managed services company Nimbus, is located in Belfast, Northern Ireland. Their services include Cybersecurity and IT managed services.Read More
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8Undisclosed10 - 49 employeesDoogary, Northern IrelandLoughTec IT · Cyber Security, a Cybersecurity company, focuses on Cybersecurity and IT managed services. The agency is in Doogary, Northern Ireland.Read More
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9$10,000+10 - 49 employeesBelfast, Northern IrelandAnalytics Engines is a data analytics company. Based in Belfast, Northern Ireland, the agency specializes in BI & big data consulting & SI and Artificial Intelligence.Read More
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10Undisclosed2 - 9 employeesBangor, Northern IrelandFounded in 2024, INNOSEC is a small IT strategy consulting company. Their team offers IT strategy consulting and cloud consulting & SI.Read More
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11$5,000+2 - 9 employeesBelfast, Northern IrelandFounded in 2006, Vertical Structure is a cloud consulting & SI company. The team specializes in cloud consulting & SI and Cybersecurity.Read More
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12$5,000+2 - 9 employeesBelfast, Northern IrelandLocated in Belfast, Northern Ireland, Big Business Agency Ltd is a pay per click company. Established in 2021, the team focuses on Pay Per Click and Social Media Marketing.Read More
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13$5,000+10 - 49 employeesBelfast, Northern IrelandAtlas, an IT managed services company, was founded in 1972. The small team specializes in IT managed services and IT strategy consulting.Read More
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14$5,000+50 - 249 employeesBanbridge, Northern IrelandEOS IT Solutions is a midsize Banbridge, Northern Ireland-based IT managed services company. The team offers IT managed services and IT strategy consulting.Read More
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15Undisclosed10 - 49 employeesBelfast, Northern IrelandITMS Ireland is a small IT managed services and Cybersecurity company located in Belfast, Northern Ireland. Their services include IT managed services and Cybersecurity.Read More
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16Undisclosed10 - 49 employeesBelfast, Northern IrelandYarra Software, a small business intelligence company, is headquartered in Belfast, Northern Ireland. The team provides BI & big data consulting & SI and cloud consulting & SI.Read More
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17Undisclosed250 - 999 employeesBelfast, Northern IrelandLaunched in 2011, AquaQ Analytics is a midsize big data company and IT managed services company. Their services include BI & big data consulting & SI and IT managed services.Read More
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18Undisclosed50 - 249 employeesLisburn, Northern IrelandXperience is a cloud consulting & SI company. The team focuses on cloud consulting & SI and CRM consulting and SI and is located in Lisburn, Northern Ireland.Read More
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19Undisclosed10 - 49 employeesBelfast, Northern IrelandAllsop Intelligent Software is a small data analytics company. Founded in 1996, the team offers BI & big data consulting & SI and cloud consulting & SI.Read More
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20Undisclosed50 - 249 employeesBelfast, Northern IrelandLaunched in 2002, Blue Zinc IT Ltd is a midsize Belfast, Northern Ireland-based data analytics company. Their services include BI & big data consulting & SI.Read More
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21Undisclosed50 - 249 employeesBelfast, Northern IrelandSysco Software Solutions is a CRM consulting and SI company launched in 1980. Their services include CRM consulting and SI and ERP consulting and SI.Read More
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22Undisclosed50 - 249 employeesBelfast, Northern IrelandQarik, an Egen Company is a cloud consulting & SI company. Their midsize team is in Belfast, Northern Ireland and Chicago, Illinois. Their services include cloud consulting & SI and Generative AI.Read More
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23Undisclosed10 - 49 employeesBelfast, Northern IrelandCyber Guarded Ltd is a cloud consulting & SI and Cybersecurity company. Founded in 2006, the team offers cloud consulting & SI and Cybersecurity.Read More
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24Undisclosed2 - 9 employeesColeraine, Northern IrelandCauseway IT Services is a Cybersecurity company. Founded in 2023, the team focuses on Cybersecurity and cloud consulting & SI.Read More
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25Undisclosed2 - 9 employeesMagherafelt, Northern IrelandMalachy Devlin Software is a data analytics company in Magherafelt, Northern Ireland. Their services include BI & big data consulting & SI and cloud consulting & SI.Read More
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26Undisclosed10 - 49 employeesBelfast, Northern IrelandIT strategy consulting and print design agency KBS Group is based in Belfast, Northern Ireland. They specialize in IT strategy consulting and Print Design.Read More
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27$250,000+1,000 - 9,999 employeesBelfast, Northern IrelandSoftware development company unosquare, LLC is headquartered in Portland, Oregon; Guadalajara, Mexico and Belfast, Northern Ireland. The large team provides Custom Software Development, IT staff augmentation, Digital Engineering, UX/UI Design, and more. The agency was established in 2009.Read More
Clients
Axos Financial, Green Dot Bank, GTreasury, G2 Risk Solutions and Blue Owl Private Equity Stitch Fix and IDX Harvard and McGraw Hill Athena Health and Foundation MedicineIndustries
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28Undisclosed2 - 9 employeesBelfast, Northern IrelandEmail Marketing company Just There was founded in 2013. The agency focuses on Email Marketing and Search Engine Optimization, and is small.Read More
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29Undisclosed10 - 49 employeesBelfast, Northern IrelandIT WEB and CLOUD is a Digital Strategy company. They are headquartered in Belfast, Northern Ireland and have small team. They offer Digital Strategy and Social Media Marketing.Read More
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30Undisclosed250 - 999 employeesBelfast, Northern IrelandTreliant, a midsize Business Consulting company, is based in Belfast, Northern Ireland and Washington, District of Columbia. Their services include Business Consulting and Litigation Support Services.Read More
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