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Top IT Companies in Belfast (124)

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
CGI
Information Technology
65 Offices
91,500 Employees
42 Benefits
We are one of the largest IT and business consulting firms in the world with over 90,000 members across 400 offices.

Serving clients since 1976, we help governments and iconic brands solve business challenges with technology solutions in the areas of digital transformation, advanced analytics, intelligent automation, cloud and IT modernization and sustainability.

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CGI

CGI's Top Stability & Growth Strengths

Strong Revenue Growth: Disclosures indicate FY2025 revenue of C$15.91B grew 8.4% year over year (4.6% in constant currency), with Q4‑FY2025 up 9.7%. This represents a clear acceleration versus FY2024’s modest growth baseline.

Market Expansion: Reported bookings of C$17.57B (110% book‑to‑bill) and a year‑end backlog of C$31.45B (about 2x annual revenue) signal expanding demand and visibility. Ongoing acquisitions, including Online Business Systems, broaden capabilities and North American reach.

Investor Backing & Capital Strength: Management increased the dividend by 13% and maintained strong operating cash flow, supporting continued M&A and shareholder returns. These actions indicate confidence in cash generation and balance‑sheet capacity.

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.

Aztech IT Solutions
Information Technology • Cybersecurity
2 Offices
61 Employees
4 Benefits

Aztech IT Solutions is trusted by more than one hundred growing businesses across the UK to deliver professional, proactive IT support services. Aztech provides the IT support and consultancy services that enable organisations to operate more efficiently, safe in the knowledge that their IT systems are optimised and proactively managed. Your IT partner should work as hard to improve your...

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Aztech IT Solutions
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
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
Exclaimer
Information Technology • Consulting
6 Offices
268 Employees
23 Benefits

Turbo-boost your email signatures After starting Exclaimer over 20 years ago, we saw how our email signature management software could boost the way businesses manage employee email signatures. Today we help brands keep communications consistent and make every message count – all while being legally compliant. But our software doesn’t just help things run smoothly, it lets businesses cut admin overheads...

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Exclaimer
Reply
Information Technology • Consulting
35 Offices
4,171 Employees
11 Benefits

Reply [EXM, STAR: REY] specialises in the design and implementation of solutions based on new communication channels and digital media. As a network of highly specialised companies, Reply defines and develops business models enabled by the new models of AI, big data, cloud computing, digital media and the internet of things. Reply delivers consulting, system integration and digital services to...

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Reply
Zensar Technologies
Information Technology
31 Offices
10,000 Employees
16 Benefits Hiring Now

Zensar is a leading experience, engineering, and technology solutions company. We conceptualize, build, and manage digital products for Forbes Global 2000 clients across the hi-tech engineering, banking and financial services, insurance, manufacturing and consumer services verticals. With proven excellence across five core areas, including experience services, advanced engineering services, data engineering and analytics, foundation services, and application services, our solutions...

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Zensar Technologies

Zensar Technologies's Top Stability & Growth Strengths

Profitability: Margins and cash are described as healthy, with recent disclosures citing solid EBITDA and PAT alongside a sizable net cash balance. These signals point to operational discipline and provide flexibility to execute on growth and large‑deal ramps.

Future-Ready Strategy: The company is actively advancing an AI‑native agenda, including broad workforce certifications and a modular AI platform, and reported multiple AI‑led wins. These moves, along with investments like a new European delivery center, indicate preparation for next‑wave demand.

Strong Market Position & Advantage: Independent assessments highlight leadership in select niches (e.g., insurance and BFSI specialists) and momentum as a Star Performer in adjacent subsegments such as payments. This specialist positioning suggests competitive advantage where domain depth and platform expertise matter.

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ScreenCloud
Artificial Intelligence • Cloud • Hardware • Information Technology • Software
5 Offices
130 Employees
107 Benefits
Creating connected companies with screens that communicate!

ScreenCloud is a full-stack digital signage solution that provides hardware and software to run screens at scale, improving deployment, management and security. Get mission critical communication infront of the right people, from HQ to deskless and frontline teams.

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ScreenCloud
First Advantage
Information Technology
2 Offices
3,712 Employees
28 Benefits

First Advantage delivers comprehensive background check solutions and insights that enable employers and housing providers to make confident choices, reduce risk, and maintain compliance. With offices in 26 locations and a staff of 4,000+ employees, First Advantage leverages leading technology and the industry’s largest global capabilities to complete background checks in 200+ countries and territories. If you’re looking for employee...

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First Advantage

First Advantage's Top Stability & Growth Strengths

Strong Market Position & Advantage: First Advantage is positioned as a top-tier provider in background screening following the Sterling Check acquisition, creating a combined business with substantial scale and broad product capabilities. The company’s global footprint and deep enterprise penetration support competitiveness for large, compliance-sensitive programs.

Strong Revenue Growth: Revenue expanded materially from 2024 to 2025, reflecting the step-change from the Sterling acquisition alongside cited commercial momentum. Forward guidance for 2026 indicates continued year-over-year top-line growth off the larger base.

Customer Loyalty & Retention: Customer retention is described as strong, with retention in the mid-to-high range and notable growth attributed to upsell, cross-sell, and new logos. This suggests a relatively sticky customer base supporting resilience through varying hiring cycles.

3DEO (3deo.com)
Information Technology • Big Data Analytics
Belfast
18 Employees

We unlock the power of your data with rapid and customisable solutions, to inform and empower your strategic decisions. We are the experts in combining 3D visualisation, earth observation and big data analytics. At 3DEO, we know it is time-consuming and costly for your organisation to respond to critical situations with the right solution. Our cost-effective and customisable solutions provide...

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3DEO (3deo.com)
Visiativ
Information Technology • Professional Services • Software • Consulting
27 Offices
1,600 Employees
Hiring Now

Visiativ is a French technology and consulting group that helps businesses—particularly small and mid-sized companies—plan, implement, manage and monitor digital transformation and innovation. It delivers digital solutions and services spanning 3D CAD/product development, product lifecycle management, business-process automation and enterprise systems, while providing assessment, implementation, training and ongoing support to improve competitiveness, productivity, collaboration and business performance worldwide.

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Visiativ
Budibase
Information Technology • Software
Belfast
22 Employees

Build internal tools for your business in minutes

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Budibase
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
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
SureSkills
Information Technology • Software
4 Offices
245 Employees

SureSkills is a leader in the design, development and delivery of a wide range of technical learning, knowledge, technical products and candidate placement services and solutions. We partner with global organisations to enable skills, knowledge and capabilities needed to drive real competitive advantage and business value. We can provide workforce solutions by giving companies access to the best talent on...

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SureSkills
Systems Limited MEA
Artificial Intelligence • Cloud • Information Technology • Automation
2 Offices
420 Employees

Systems MEA is an MEA-based subsidiary of Pakistan's largest IT company, Systems Limited, which houses a skilled workforce of 7000+ employees globally. Our experience spans to 4 decades with a presence across 5 continents. Our satisfied industry leading clientele of 400+ public and private institutions is a testament to our unparalleled digital solutions. We aspire to enable businesses to build...

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Systems Limited MEA
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
Cybit
Information Technology
4 Offices
156 Employees
2 Benefits Hiring Now

Cybit is an end-to-end IT solutions provider with 30+ years of experience. We transform businesses using industry-leading technologies. Our mission is to power our customers’ commercial success through the expert design, development and delivery of flexible managed IT services, cyber security solutions, cloud migration and data and analytics. Email us at [email protected]

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Cybit

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