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Top IT Companies in Belfast (120)

B-Secur
Information Technology • Consulting
Belfast
76 Employees

B-Secur is a heart health technology company. Founded in Belfast, Northern Ireland, we are on a mission to save and improve millions of lives each year by advancing heart health technology that brings greater clarity to EKG interpretation with better data and deeper insights. We spent many years immersed in deep scientific research in EKG biometric security. This led us...

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B-Secur
MetaCompliance
Information Technology • Software • Cybersecurity • Automation
5 Offices
232 Employees

With 18+ years of experience in the Cyber Security and Compliance market, MetaCompliance provides an innovative solution for staff information security awareness and incident management automation. The MetaCompliance platform was created to meet customer needs for a single, comprehensive solution to manage the people risks surrounding Cyber Security, Data Protection and Compliance. The solution provides an easier approach to managing...

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MetaCompliance
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
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
Accelerite
Big Data • eCommerce • Information Technology • Internet of Things • Software • Analytics
Belfast
24 Employees

Accelerite is a Silicon Valley based company delivering secure business-critical infrastructure software for Global 1000 enterprises. Accelerite's product suite includes hybrid cloud infrastructure, endpoint security, risk-based authentication, big data analytics, and the Internet of Things. Accelerite is a wholly owned business of Persistent Systems (BSE & NSE: PERSISTENT), a global leader in software product development and technology services. Learn more...

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Accelerite
EXL
Information Technology • Database • Consulting
35 Offices
30,246 Employees
20 Benefits

Choosing a digital partner is about more than capabilities — it’s about collaboration and character. Unrealistic overhauls and off-the-shelf products ignore what matters most — your unique needs, culture, goals, and your legacy data and technology environments. At EXL, our collaboration is built on ongoing listening and learning to adapt our methodologies. We’re your business evolution partner—tailoring solutions that make the most...

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EXL
FD Technologies
Information Technology
5 Offices
2,509 Employees

FD is a group of data-driven businesses that unlock the value of insight, hindsight and foresight to drive organisations forward. The Group comprises KX, the leading technology for real-time continuous intelligence; First Derivative, a provider of technology-led services in capital markets; and MRP, the only enterprise-class, predictive Accounts Based Marketing solution. FD operates from 15 offices across Europe, North America...

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FD Technologies
Camlin Group
Information Technology • Software • Energy • Renewable Energy
5 Offices
315 Employees
1 Benefits Hiring Now

Transforming critical energy & rail infrastructures for our shared future. With bold determination and a spirit of invention, we're optimising the crucial systems of a resilient future — turning possibilities into progress every day.

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Camlin Group
Black Box
Information Technology
35 Offices
5,000 Employees
26 Benefits

Black Box is a global digital infrastructure integrator delivering network and system integration services and solutions, support services, and technology products to businesses in the United States, Europe, India, Asia Pacific, the Middle East, and Latin America and has around 4,000 professionals globally. Black Box has strong service offerings in network integration, digital connectivity infrastructure, data center build-out, modern workplace, and...

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Black Box

Black Box's Top Stability & Growth Strengths

Market Expansion: The company is positioned as having a broad global operating footprint, with operations described across dozens of countries and multiple continents. Growth plans also include geographic expansion through a planned acquisition in Brazil and continued build-out in regions like APAC.

Strategic Partnerships: The company is described as holding strong ecosystem relationships, including a Cisco Gold Partner designation and recognition from vendors such as Juniper and Extreme Networks. These partnerships indicate depth in integrating major networking platforms and can support delivery credibility on large programs.

Resilient & Sustainable Growth: The company is described as having executed a turnaround from earlier losses to profitability, alongside improving margins and a growing order book/backlog. Management’s multi-year growth targets and focus on higher-value mix areas like data centers and AI-led infrastructure further support an upward trajectory.

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Fujitsu
Cloud • Hardware • Information Technology • Mobile • Software
57 Offices
64,723 Employees
27 Benefits

Fujitsu is the leading Japanese global information and communication technology company, offering a wide range of technology products, solutions and services. We build new possibilities by connecting people, technology and ideas, creating a more sustainable world where anyone can advance their dreams.

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Fujitsu
MedAll
Healthtech • Information Technology
Belfast
38 Employees

The world needs to train 18 million more healthcare professionals by 2030. At MedAll we’re on a mission to solve this healthcare crisis by making great healthcare training more accessible to every healthcare professional, everywhere. Read more about our mission at MedAll.org/mission

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MedAll
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
ITC Secure
Information Technology • Cybersecurity
2 Offices
100 Employees

ITC Secure is an advisory-led cyber security services company. We have a 25+ year track record of delivering business-critical services to over 300 blue-chip organisations - bringing together the best minds in security, a relentless focus on customer service and advanced technological expertise to help businesses succeed. With our integrated delivery model, proprietary platform and customer-first mindset, we work as...

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ITC Secure
Ensono
Cloud • Information Technology
12 Offices
3,000 Employees
14 Benefits Hiring Now
Support mission critical workloads, modernize IT infrastructure and reduce total cost of ownership.

Ensono helps IT leaders be the catalyst for change by harnessing the power of hybrid IT to transform their businesses. Our broad services portfolio from mainframe to cloud, powered by an intelligent governance platform, is designed to help our clients operate for today and optimize for tomorrow. We are award-winning certified experts in AWS & Azure

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Ensono

Ensono's Top Stability & Growth Strengths

Strong Revenue Growth: Company disclosures indicate revenue expanded from about $224M at inception to roughly $1.1B and clients grew to 250+ by January 2026, reflecting sustained scale-up. Additional signals such as headcount increases and the launch of an AI & Innovation Division reinforce ongoing momentum.

Strong Market Position & Advantage: Multiple independent analyst assessments (ISG, Everest, IDC) place the company as a Leader in mainframe services and modernization, with Gartner listing it in a 2024 Market Guide for the niche. Credentials like the AWS Mainframe Modernization Competency and public-sector recognitions further underpin competitive strength in this segment.

Investor Backing & Capital Strength: Ownership by KKR since 2021 and a stated $250M, five‑year AI investment plan indicate access to capital supporting expansion and R&D. Capability-expanding acquisitions such as Amido and ExperSolve align with a funded growth strategy.

West Technology Group
Cloud • Information Technology
Fully Remote
65 Employees

West solutions connect people and organizations at the right time and in the right ways, making those mission-critical connections more relevant, engaging, and actionable - turning Information to Insight.

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West Technology Group
Unosquare
Information Technology
6 Offices
884 Employees

Unosquare provides custom software development with agile software delivery professionals for Healthcare, Financial Services, and High Tech customers. We do this work from the USA, Latin America, and the United Kingdom. With over 2,500 successfully completed projects, nearly 600 full-time employees, and 100 active distributed teams, Unosquare has been one of the fastest growing private businesses in the USA with...

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Unosquare
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
HUMAIN
Information Technology
2 Offices
1,000 Employees

Empowering the future of AI, from leading AI infrastructure to advanced intelligence. Our approach unites scalable infrastructure, multimodal foundation models, and applied intelligence to drive real-world change. Spanning the entire AI value chain—from next generation AI data centers, advanced AI infrastructure and cloud, cutting-edge data AI models, to leading AI applications and solutions. What sets us apart is our unwavering commitment...

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HUMAIN
Metapack
Information Technology • Software
2 Offices
200 Employees

Metapack helps the world’s most successful online retailers and brands provide simple yet powerful delivery experiences. Our delivery management solutions are underpinned by the largest global carrier network – 400 carriers and 4,900 delivery services – supported by the most responsive and highly available API on the market. That means more ways to get your products where they need to...

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Metapack
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.

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