Top 40 Systems Integrator Companies in Northern Ireland
The Best of December 2025List of the Best Northern Ireland System Integrators
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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$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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3$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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4Undisclosed50 - 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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5Undisclosed10 - 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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6$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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7$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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8Undisclosed50 - 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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9Undisclosed2 - 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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10Undisclosed10 - 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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11Undisclosed250 - 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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12Undisclosed10 - 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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13$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
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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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14$1,000+Freelancer employeesDerry, Northern IrelandSocial Media Manager Ireland is a small social media marketing company located in Lecamey, Ireland and Derry, Northern Ireland. The team provides Social Media Marketing and Web Design.Read More
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15$1,000+2 - 9 employeesBelfast, Northern IrelandTiedot Digital Ltd is a Conversion Optimization company. Their small team of employees is located in Belfast, Northern Ireland. Their team specializes in Conversion Optimization and Pay Per Click.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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17Undisclosed50 - 249 employeesNewcastle, Northern IrelandEque2 Ltd is a custom software development firm. Headquartered in Maidenhead, England and Farnham Surrey , England, the team specializes in Custom Software Development and ERP consulting and SI.Read More
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18Undisclosed50 - 249 employeesBelfast, Northern IrelandFounded in 2004, Anaeko is a custom software development firm. The company offers Custom Software Development and cloud consulting & SI.Read More
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19Undisclosed50 - 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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20Undisclosed50 - 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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21Undisclosed2 - 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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22Undisclosed2 - 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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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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24$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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25Undisclosed50 - 249 employeesBelfast, Northern IrelandPentagon Solutions Ltd. Is a Product Design company based in Cork, Ireland and Belfast, Northern Ireland. The team offers Product Design and Architectural Design.Read More
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26$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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27$10,000+Freelancer employeesBelfast, Northern IrelandServerless First is a small Belfast, Northern Ireland-based cloud consulting & SI company. Their services include cloud consulting & SI and Custom Software Development.Read More
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28$100,000+50 - 249 employeesBelfast, Northern IrelandCRM consulting and SI company Kliqxe provides CRM consulting and SI and ERP consulting and SI. They were established in 2016.Read More
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29$5,000+Freelancer employeesBelfast, Northern IrelandSocial media marketing firm Ride Digital Marketing was founded in 2019. The team focuses on Social Media Marketing and Email Marketing.Read More
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30$1,000+10 - 49 employeesBelfast, Northern IrelandIT managed services company Euro Systems offers IT managed services and cloud consulting & SI. They were founded in 2009.Read More
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