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Top IT Companies in Belfast (124)

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
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
Qualcom
Information Technology • Software
2 Offices
170 Employees

Are you tired of dealing with frustrating IT issues that hinder your business's productivity? Qualcom's Managed IT Services Solution can help you streamline and secure your IT infrastructure, freeing up your time to focus on growing your business. We can provide you with an extensive range of IT Services. Our team of experienced IT experts are dedicated to delivering exceptional customer service, always...

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Qualcom
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.

Zego (zego.com)
Automotive • Information Technology • Insurance
2 Offices
388 Employees
30 Benefits

Zego is a commercial motor insurance provider that powers opportunities for businesses, from entire fleets of vehicles to self-employed drivers and riders. It combines best-in-class technology with sophisticated data sources to offer insurance products that save businesses time and money. Since its inception, Zego has believed that the problem with traditional insurance is that it holds businesses back. It’s too...

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Zego (zego.com)
Kyndryl
Cloud • Information Technology • Consulting
16 Offices
46,070 Employees
30 Benefits

We have the world’s best talent that design, run, and manage the most advanced and reliable technology infrastructure each day. Together, we think holistically about the health of these vital technology ecosystems. We are a focused, independent company that builds on our foundation of excellence by creating systems in new ways. Bringing in the right partners, investing in our business, and...

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Kyndryl

Kyndryl's Top Stability & Growth Strengths

Profitability: Results indicate a swing to pretax profitability with strong year-over-year improvements in EBITDA and guidance pointing to continued earnings and free‑cash‑flow growth.

Strategic Partnerships: Alliances with major hyperscalers are scaling rapidly, with partner‑tied revenue more than doubling and management signaling momentum toward stated targets.

Strong Market Position & Advantage: Recognition as a Leader by major analyst firms in data center outsourcing, digital workplace, managed cloud operations, and mainframe services, combined with global scale, supports a strong position in mission‑critical infrastructure.

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
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.

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
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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
ITC Infotech
Information Technology
37 Offices
10,000 Employees
5 Benefits

ITC Infotech is a global technology solution and services leader providing business-friendly solutions, that enable future-readiness for clients. We seamlessly bring together digital expertise, strong industry-specific alliances, and deep domain expertise from ITC Group businesses. Our solutions and services are focused on Banking and financial Services, Healthcare, Manufacturing, Consumer Goods, Travel and Hospitality.

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ITC Infotech
Helen of Troy Limited
Information Technology • Manufacturing
15 Offices
2,023 Employees
31 Benefits

Look around your home, and you'll find us everywhere: In your kitchen, living room, bedroom, and bathroom. We are already making your everyday lives better. We are powered by knowledgeable, enthusiastic, and forward-thinking people committed to developing a culture of inclusion. Whether you are just starting your career or in need of a challenge, we recognize, develop, and empower talent!

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Helen of Troy Limited

Helen of Troy Limited's Top Stability & Growth Strengths

Healthy Cash Flow: Operating cash flow improved year over year and management guides to positive free cash flow, with debt reduction providing added flexibility to invest. Disclosures also point to asset sales and working-capital efficiency supporting liquidity.

Strong Brand Reputation: Flagship brands such as OXO, Hydro Flask, and Osprey are described as leaders within premium niches, and management indicates the portfolio remains competitively vibrant despite macro and tariff pressures. Company materials and cited distinctions reinforce brand strength at the category level.

Future-Ready Strategy: Management is dual‑sourcing production to mitigate tariff exposure and frames FY2027 as a pivot toward growth. Increased focus on product innovation, people, and digital is intended to restore momentum while managing trade headwinds.

Yahoo
AdTech • Digital Media • Information Technology • Other
15 Offices
10,001 Employees
47 Benefits Hiring Now

Yahoo is a global media and tech company that connects people to their passions. We reach nearly 900 million people around the world, bringing them closer to what they love—from finance and sports, to shopping, gaming and news—with the trusted products, content and tech that fuel their day. For partners, we provide a full-stack platform for businesses to amplify growth...

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Yahoo

Yahoo's Top Stability & Growth Strengths

Strong Market Position & Advantage: Yahoo is portrayed as a major platform by reach—ranking top in news and finance, second in email, and remaining among the top internet properties by visitors, with overall traffic placing it behind only a few dominant platforms. Leadership in specific verticals such as finance, news, sports, and email underpins durable competitive footing.

Diversified Customer Base: The company is described as reaching hundreds of millions to nearly 900 million people globally across properties spanning news, finance, sports, shopping, gaming, and email. This breadth indicates exposure to varied audience segments rather than reliance on a single cohort.

Future-Ready Strategy: Leadership highlights a transformation centered on innovation, with emphasis on AI and machine learning at global scale. This focus signals intent to modernize offerings and advertising beyond legacy areas.

OneSource Virtual
Information Technology • Software
6 Offices
820 Employees
28 Benefits Hiring Now

OneSource Virtual (OSV) is the Workday partner that has helped more than 1,300 companies with everything from deployment to maintenance to payroll and more—all to make the day more doable. Founded in 2008, OSV pioneered Business Process as a Service (BPaaS) and has become the leading provider of automated solutions for organizations of all sizes using Workday, delivering services with...

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OneSource Virtual

OneSource Virtual's Top Stability & Growth Strengths

Strong Market Position & Advantage: Colleagues are often seen as holding a leadership position within a focused Workday BPaaS and managed-services niche, with a scaled footprint across many Workday customers. The exclusive, in-tenant operating model across payroll, tax, payments/AP, and benefits is positioned as a clear differentiator versus broad implementation-led providers.

Investor Backing & Capital Strength: Colleagues are often seen as benefiting from increased financial backing following a majority growth investment by TA Associates, signaling confidence in continued scaling. The investment is framed as fuel for organic growth, innovation, and expanded customer capabilities.

Customer Loyalty & Retention: Colleagues are often seen as supported by durable customer stickiness, highlighted by consistently high retention and large transaction volumes moving through the platform. The combination of long-term Workday ecosystem tenure and repeatable run/operate services suggests stability in ongoing demand.

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

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.

Everbridge
Information Technology • Software • Consulting
28 Offices
1,437 Employees
34 Benefits Hiring Now

Keeping People Safe and Businesses Running. Faster. Everbridge, Inc. (NASDAQ: EVBG) is a global software company that provides enterprise software applications that automate and accelerate organizations’ operational response to critical events in order to Keep People Safe and Businesses Running™. During public safety threats such as active shooter situations, terrorist attacks or severe weather conditions, as well as critical business events...

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Everbridge

Everbridge's Top Stability & Growth Strengths

Strong Market Position & Advantage: Everbridge is positioned as a category leader in critical event management and mass notification, supported by independent analyst recognition and a sizable installed base in government and public safety. National-scale public warning deployments across multiple countries further reinforce perceived leadership in high-stakes, large-scale use cases.

Investor Backing & Capital Strength: The take-private acquisition by Thoma Bravo at a multi-billion-dollar valuation signals continued investor conviction in the business and its market category. Private-equity ownership also implies access to capital and operational support to fund product investment and go-to-market execution.

Innovation-Driven Growth: Ongoing platform updates (Everbridge 360 and High Velocity CEM) and patent activity around AI-enabled crisis response indicate sustained product innovation. Expanded integrations and managed-services motions suggest efforts to translate roadmap velocity into broader adoption.

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.

The Channel Company
AdTech • Information Technology
2 Offices
608 Employees
17 Benefits Hiring Now

The Channel Company is enabling technology partnerships across the channel eco-system. With more than 3 decades of experience as the premier provider in the channel, The Channel Company helps the IT Channel with communication, recruitment, enablement, engagement, demand generation, and intelligence.

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The Channel Company

The Channel Company's Top Stability & Growth Strengths

Strong Market Position & Advantage: The company is widely regarded as a category leader in channel-focused media, events, and marketing services, anchored by CRN’s influence and flagship events like XChange. It competes strongly alongside Informa Tech’s Channel Futures/Channel Partners while maintaining unmatched brand equity through CRN and a broad global platform.

Market Expansion: The firm has expanded across the U.S., EMEA, and APAC with new or relaunched publications and events (e.g., CRN UK, CRN Asia, CRN Australia/NZ, XChange EMEA/LATAM/Asia/ANZ). Ongoing international event programming and regional launches are presented as near‑term barometers of growth momentum.

Investor Backing & Capital Strength: Private‑equity ownership by EagleTree Capital since November 2021 is positioned to drive a next phase of growth, followed by multiple acquisitions and a new CEO mandate for global expansion and AI-enabled products. The acquisition streak (Audienz, bChannels, Lauchlan, Incisive Media’s tech properties) underscores a buy‑and‑build strategy.

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.

Tray.ai
Artificial Intelligence • Cloud • Information Technology • Software • Automation
3 Offices
171 Employees
15 Benefits

Tray.ai offers a composable AI integration and automation platform that transforms AI into standout business performance. The Tray Universal Automation Cloud is an AI-ready platform that eliminates the need for disparate tools, enabling seamless integration and automation of complex business processes. As enterprises strive for competitive advantage, our platform helps IT teams deploy AI effectively, connecting systems, automating processes, and integrating...

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Tray.ai

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