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Top IT Companies in Belfast (124)

Epicor
Cloud • Information Technology • Professional Services • Sales • Software
40 Offices
6,280 Employees
24 Benefits Hiring Now
As a leader in Enterprise Resource Planning, we're the essential partner for the world's most essential businesses.

We’re the Digital Brains of Our Customers’ Operations We help businesses stay future-ready with cognitive ERP that connects people, processes, and technology. From software engineers who command the latest AI technology to business development reps who help us seize new opportunities, the work we do matters. Together, Epicor employees are creating a more resilient global supply chain.

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Epicor

Epicor's Top Stability & Growth Strengths

Strong Revenue Growth: Evidence indicates Epicor surpassed $1B in annual recurring revenue and outlined plans to roughly double sales within four years, signaling momentum in subscriptions. Communications emphasize accelerating cloud migrations, which typically bolster recurring revenue mix.

Strong Market Position & Advantage: Analyst recognitions position Epicor as a Leader in Gartner’s Cloud ERP for Product‑Centric Enterprises and IDC’s SMB/midmarket ERP assessments. Independent summaries consistently frame Epicor as strong in midmarket manufacturing and distribution niches.

Investor Backing & Capital Strength: Ownership by CD&R alongside new investment from CVC is cited as support to accelerate growth and continued SaaS/AI investment. An active M&A cadence in 2024–2025 reinforces access to capital for portfolio expansion.

OUTSOURCE
Information Technology • Cybersecurity
5 Offices
46 Employees

An award winning, locally owned, IT Managed Security Services Provider (MSSP) working with SME/Enterprise customers across the UK, Ireland and internationally. Outsource solutions and services, covering from 'the desktop to the data centre' are all underpinned by our "Security First" approach and focus on improving the security, performance and productivity of every company we partner with. We also offer a suite...

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OUTSOURCE
Cirdan
Information Technology • Manufacturing
2 Offices
94 Employees

Cirdan designs, manufactures and supplies innovative software and imaging solutions for the acceleration and enhancement of diagnosis. Our systems are optimised for pathology and clinical laboratory usage. Cirdan’s primary product is its world-class Laboratory Information System, ULTRA. ULTRA has been designed to streamline laboratory operations and is currently installed in more than 72 laboratories across 6 continents. Another core product...

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Cirdan
Nasstar
Cloud • Information Technology
3 Offices
923 Employees
2 Benefits Hiring Now

At Nasstar, we specialise in transformative technology. Our integrated suite of managed services delivers everything from cloud optimisation and application modernisation to networking, security and self-serve tools. With a consultative approach at our core, we modernise and manage technology to help our clients succeed in today's competitive business world. Through strategic consultation, to implementation and management, we provide the vision and...

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Nasstar
SITA
Information Technology • Consulting
21 Offices
7,798 Employees
33 Benefits

Travel fuels the world today. Connecting us all. Building a better quality of life, and propelling our global economy. Since the start, we’ve made it our lifework to build solutions that help every airline and every airport across the world. We made check-in easier. We let pilots talk to ground control. We delivered better ways to track down lost...

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SITA

SITA's Top Stability & Growth Strengths

Strong Market Position & Advantage: Global reach is positioned as a core strength, including a communications backbone with worldwide coverage and very high availability, plus entrenched platforms like WorldTracer in baggage operations. Segment leadership is described as clearest in air‑transport communications infrastructure, baggage irregularity management, and common‑use/passenger processing where deployments are widespread.

Strong Revenue Growth: Revenue is described as rising for two consecutive years, reaching record results through 2023 and 2024 with growth across major business lines and geographies. Momentum is framed as broad-based rather than limited to a single segment.

Innovation-Driven Growth: Investment in R&D and a stated focus on product innovation are highlighted as contributors to recent momentum. Acquisitions such as Materna IPS and ASISTIM are portrayed as capability additions that expand the end‑to‑end passenger and operations portfolio.

Cerco
Information Technology
2 Offices
144 Employees

Cerco employees provide a flexible resource throughout the UK and Ireland for employer partners, from smaller SMEs to large global corporations. Both permanent and temporary opportunities are available, and you could be hired from one day short term jobs to long term, open ended placements. At Cerco we look for customer-focused people with a ‘can do’ attitude plus hardware and...

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Cerco
O2
Information Technology • Mobile
21 Offices
5,230 Employees
15 Benefits

O2 is the commercial brand of Telefónica UK Limited and is a leading digital communications company with the highest customer satisfaction for any mobile provider according to Ofcom. With over 23 million customers, O2 runs 2G, 3G, 4G and 5G networks across the UK, as well as operating O2 Wifi and owning half of Tesco Mobile. O2 has over 450...

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O2
GTT
Information Technology • Security • Design
33 Offices
3,031 Employees
29 Benefits

GTT is a managed network and security services provider to global organizations. We design and deliver solutions that leverage advanced cloud, networking and security technologies. We complement our solutions with a suite of professional services and exceptional support teams in local markets around the world. We serve thousands of national and multinational companies with a portfolio that includes SD-WAN, security,...

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GTT

GTT's Top Stability & Growth Strengths

Strong Revenue Growth: Consolidated revenues and EBITDA at Gaztransport & Technigaz increased markedly in 2023–2024 with further growth guided for 2025. A sizable multi‑year order book and recent LNG carrier awards provide strong visibility.

Strong Market Position & Advantage: GTT Communications operates a Tier‑1 global IP backbone across continents and is recognized as a Leader in managed network services by ISG and industry programs. A broad enterprise customer base and continued awards reinforce standing in its specialized domains.

Future-Ready Strategy: Both organizations are investing in forward‑looking capabilities, including hydrogen and alternative fuels (GTT S.A.) and SASE/SD‑WAN platforms plus 400G/800G backbone upgrades (GTT Communications). These initiatives position them to address evolving demand and regulatory drivers.

Hudl
Hardware • Information Technology • Software • Sports • Wearables
16 Offices
1,250 Employees
38 Benefits
Build the world’s most powerful network of sports video and data to empower teams to make every moment count.

Hudl is a pioneer in performance analysis technology, now helping more than 200K teams in 40+ global sports prepare for and stay ahead of the competition. Every product, feature and tool is designed with one purpose in mind: to ensure coaches and athletes make every moment count. A complete suite of video and data products ensures coaches have the insights...

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Hudl

Hudl's Top Stability & Growth Strengths

Strong Market Position & Advantage: Hudl is positioned as an incumbent leader in team sports video analysis, supported by very large stated adoption and strong penetration in U.S. scholastic sports plus meaningful reach into college and parts of the pro market. The end-to-end workflow across capture, analysis, scouting, and sharing is framed as creating ecosystem gravity and higher switching costs.

Product Line Growth: Hudl is described as expanding beyond core video analysis into scouting databases, telestration, livestreaming, ticketing, wearables, and athlete monitoring, creating a broader stack that can be sold as bundles. Recent additions such as Signal and acquisitions across analytics, coaching tools, and tracking are presented as increasing capability coverage across levels of play.

Strategic Partnerships: Recent agreements and content/league partnerships are cited as extending distribution and audience reach, including youth development and media partnerships. Conference and association deals for streaming/ticketing are depicted as strengthening adoption pathways and reinforcing platform usage.

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Clinisys
Information Technology • Software
16 Offices
1,597 Employees
4 Benefits

Clinisys is a global provider of informatics software and expertise to support diagnostic testing across healthcare, life sciences and public health. Millions of diagnostic results and data insights are generated every day using Clinisys’ platform and cloud-based solutions in over 3,000 laboratories across 34 countries. Headquartered in Tucson, Arizona, and Woking, England, Clinisys’ mission is to help make citizens and...

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Clinisys
Tata Communications
Information Technology
28 Offices
16,277 Employees
9 Benefits

Tata Communications is a digital ecosystem enabler that powers today’s fast-growing digital economy. We enable the digital transformation of enterprises globally, including 300 of the Fortune 500. We carry around 30% of the world’s internet routes and connects businesses to 60% of the world’s cloud giants. We have been a part of the rich heritage of the internet in...

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Tata Communications
Firstup
Information Technology • Other • Software
3 Offices
259 Employees
33 Benefits Hiring Now

Firstup is redefining the digital employee experience to put people first and lift companies up. We make communication solutions that build authentic engagement and create two-way conversation between employees and companies. Our powerful orchestration engine connects every worker, everywhere, on any device with personalized information that helps them do their best work. That’s why 40% of Fortune 100 companies like...

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Firstup
Grouper Technology
Information Technology • Software • Cybersecurity
3 Offices
9 Employees

Grouper Technology (Grouper®) is partner to some of Europe’s leading organisations in their software modernisation and digital transformation journey. We help organisations create innovative management systems, tools and technologies that empower their quality assurance needs and in particularly, relating to corporate governance, risk, and compliance. Grouper offers two primary pillars of "Specialised Application Solutions” and “IT Advisory Services”. Our advisory...

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Grouper Technology
DisplayNote Technologies
Information Technology • Software
2 Offices
38 Employees

DisplayNote Technologies is a leading technology company that creates intelligent collaboration solutions for education and enterprise. Whether launching video calls or presenting ideas, organizations worldwide rely on our software to wirelessly share content and improve collaboration in their classrooms and meeting spaces. Using software-only solutions, DisplayNote Technologies transforms education and enterprise displays into collaborative workspaces at a fraction of the...

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DisplayNote Technologies
Tata Technologies
Information Technology • Consulting
13 Offices
15,050 Employees
10 Benefits

We're a global product engineering and digital services company focused on fulfilling our mission of helping the world drive, fly, build, and farm by enabling our customers to realize better products and deliver better experiences. We’re the strategic engineering partner businesses turn to when they aspire to be better. Manufacturing companies rely on us to enable them to conceptualize, develop...

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Tata Technologies
ISDM Solutions
Cloud • Information Technology
5 Offices
53 Employees

ISDM Solutions is a systems integration, management and cloud video service provider, specialising in the delivery of AV and VC projects. We have the benefit of over 20 years in project management at Prince2 practitioner standards, where we are able to apply best practices in our delivery methodology. Our team are technically knowledgeable and has vast experience in ensuring our...

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ISDM Solutions
Liberty IT
Information Technology • Insurance
3 Offices
747 Employees
1 Benefits

We’re a bunch of inventors, problem solvers, business brains and tech transformers. We revel in a challenge and stop at nothing to provide the solution, exceeding expectations, breaking new ground and transforming customer interactions. With over 25 years’ experience we’ve got the backing of global giant Liberty Mutual Insurance, with fresh talent to push every boundary. And that’s what makes us...

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Liberty IT

Liberty IT's Top Stability & Growth Strengths

Market Expansion: New city‑centre offices in Dublin and Galway, a dedicated Bonham Quay site, and a Galway hub with a 100‑role plan indicate a widening geographic footprint on the island of Ireland. Current openings across Belfast, Dublin and Galway reinforce ongoing multi‑site growth.

Strong Hiring & Retention: Active recruitment across engineering, data, product and consultancy, alongside sizable graduate intakes and large internal events, point to sustained headcount investment. Repeated Great Place to Work recognition suggests the ability to attract and keep talent.

Innovation-Driven Growth: Cloud transformation on AWS with serverless‑first patterns and showcased AI/ML and virtual assistant initiatives highlight a technology agenda geared toward modernisation. Public write‑ups cite Liberty IT leadership in enterprise AI adoption within Liberty Mutual.

Persistent Systems
Artificial Intelligence • Cloud • Information Technology • Software • Cybersecurity • App development • Big Data Analytics
54 Offices
23,000 Employees
18 Benefits
See Beyond, Rise Above

Persistent Systems is a leading provider of digital transformation services, offering innovative solutions tailored to various industries worldwide. With a robust global presence, they deliver cutting-edge services in product engineering, digital strategy, and data analytics, helping businesses thrive in today's rapidly evolving landscape. From healthcare and financial services to retail and manufacturing, Persistent Systems empowers organizations across diverse sectors to...

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Persistent Systems
QBE LLC
Information Technology • Professional Services • Consulting • Defense
50 Offices
66 Employees

QBE LLC is a management and technology consulting organization that provides services to the federal government and defense communities, offering IT services, cybersecurity, cloud infrastructure, data management, and system engineering.

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QBE LLC
Allstate Northern Ireland
Information Technology • Software
2 Offices

Allstate in Northern Ireland is a leading technology and business services centre, supporting The Allstate Corporation - one of the largest publicly held personal lines insurers in the United States. Established as one of Northern Ireland’s most progressive employers, Allstate NI continues to drive innovation across emerging technologies that shape the future of how people live and work. Our teams are developing...

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Allstate Northern Ireland

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