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Top IT Companies in Belfast (124)

iManage
Artificial Intelligence • Cloud • Information Technology • Legal Tech • Productivity • Software
8 Offices
1,200 Employees
104 Benefits Hiring Now
Whoever you are, whatever you do, however you work. Make it mean something at iManage.

iManage is dedicated to Making Knowledge Work. Over one million professionals across 65+ countries rely on our intelligent, cloud-enabled, secure knowledge work platform to uncover & activate the knowledge that exists inside their business content and communications. We are continuously innovating to solve the most complex professional challenges & enable better business outcomes. Our work is not always easy but it...

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iManage

iManage's Top Stability & Growth Strengths

Strong Revenue Growth: Annual recurring revenue is reported to have grown 42% year over year in 2024, with subsequent updates indicating continued momentum into 2025. Feedback suggests this trajectory is supported by the shift to subscription cloud offerings and sustained migration activity.

Market Expansion: The company added 305 new customer organizations in 2024 and 340 in 2025, indicating ongoing expansion of its installed base. Rising cloud adoption—from 71% of customers in 2025 to 78% by May 2026—reinforces broadening platform uptake.

Strong Market Position & Advantage: Adoption includes 83% of the Top Global 100 law firms, 79% of the Am Law 100, and about 40% of the Fortune 100. This entrenched presence in large enterprises supports commercial durability as the platform evolves with AI and cloud capabilities.

Rapid7
Artificial Intelligence • Cloud • Information Technology • Sales • Security • Software • Cybersecurity
15 Offices
2,400 Employees
120 Benefits Hiring Now
Take Command of your Career

At Rapid7, our vision is to create a secure digital world for our customers, our industry, and our communities. We do this by harnessing our collective expertise and passion to challenge what’s possible and drive extraordinary impact. We’re building a dynamic and collaborative workplace where new ideas are welcome. Protecting 11,000+ customers against bad actors and threats means we’re continuing...

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Rapid7

Rapid7's Top Stability & Growth Strengths

Profitability: Operating and net income remained positive even as revenue softened in recent quarters. This indicates an earnings base that is holding up during a period of slower demand.

Healthy Cash Flow: Free cash flow stayed positive with meaningful generation quarter to quarter, and guidance points to continued cash production. Liquidity is reinforced by a sizable balance of cash, cash equivalents, and government securities.

Future-Ready Strategy: Management is concentrating investment on the Command Platform, detection and response, exposure management, and AI-enabled security operations. This refocus aims to position the portfolio for a return to growth once the transition progresses.

RigUp
Information Technology • Professional Services • Software • Energy
3 Offices
260 Employees
70 Benefits
RigUp crafts software and services that streamline field operations - from sourcing all the way to payments.

We offer a source to pay solution designed for the energy sector. It streamlines the entire process from finding suppliers to issuing payments. Our goal is to strengthen alignment between field workers and corporate offices.

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RigUp

RigUp's Top Stability & Growth Strengths

Strong Revenue Growth: Historical figures indicate revenue expanded rapidly from 2018 to 2021, with reports near $900 million in 2020 and third-party estimates around $1.16 billion in 2021. Platform activity was also cited as exceeding $2 billion in gross service volume in 2019.

Product Line Growth: Recent moves include launching a vendor‑management product in 2024 and positioning a broader source‑to‑pay and workforce management suite by 2025–2026. These developments suggest the business is expanding beyond staffing into software and energy technology.

Market Expansion: The acquisition of Calgary‑based Codeco‑Vanoco Engineering adds Canadian engineering and staffing capabilities, and hiring has targeted utilities, power distribution, infrastructure, and data centers. Offices in Austin, Belfast, and Calgary further indicate multi‑region operations.

Thales
Artificial Intelligence • Big Data • Information Technology • Security • Software
78 Offices
63,258 Employees
18 Benefits Hiring Now

Thales is a global high technology leader investing in digital and “deep tech” innovations – connectivity, big data, artificial intelligence, cybersecurity and quantum technology – to build a future we can all trust, which is vital to the development of our societies. The company provides solutions, services and products that help its customers – businesses, organisations and states – in...

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Thales

Thales's Top Stability & Growth Strengths

Strong Revenue Growth: Sales increased in 2025 versus 2024, with early 2026 also showing higher sales and management guiding to further organic growth in 2026.

Profitability: Adjusted EBIT rose and margins improved in 2025, indicating strengthening operating performance alongside growth.

Resilient & Sustainable Growth: Record order intake and an order book above €53 billion provide multi‑year visibility, and a book‑to‑bill above 1 with reaffirmed 2026 targets supports continued expansion.

Codec
Artificial Intelligence • Cloud • Information Technology • Software
4 Offices
223 Employees
6 Benefits Hiring Now

Established in 1985 and headquartered in Ireland, Codec is a high-growth, leading technology company with offices in Dublin, London, Belfast, and Malta. With a team of over 300 dedicated professionals, we are committed to delivering innovative solutions based on the Microsoft low-code platform. As current Microsoft country partner of the year (for the 4th time), Codec specialises in providing business...

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Codec
System C Healthcare
Edtech • Healthtech • Information Technology • Software
9 Offices
917 Employees
Hiring Now

System C Healthcare is a British health and social care technology company founded in 1983. It develops and deploys IT products and services for the NHS, social service authorities and social care providers. Through its Liquidlogic subsidiary, the company supplies social care and education management solutions that facilitate collaboration across health and care services. Its mission is to deliver technology...

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System C Healthcare
Version 1
Information Technology • Consulting
12 Offices
3,000 Employees
12 Benefits Hiring Now

Version 1 proves that IT can make a real difference to our customers'​ businesses. We are trusted by global brands to deliver IT services and solutions which drive customer success. Our 3000+ strong team works closely with our technology partners to provide independent advice that helps our customers navigate the rapidly changing world of IT. Our greatest strength is balance...

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Version 1
Kainos
Information Technology
10 Offices
2,999 Employees
31 Benefits Hiring Now

At Kainos we use technology to solve real problems for our customers, overcome big challenges for businesses, and make people’s lives easier. We build strong relationships with our customers and go beyond to change the way they work today and the impact they have tomorrow. Our two specialist business areas, Digital Services and the Workday Practice, work globally for clients across healthcare,...

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Kainos

Kainos's Top Stability & Growth Strengths

Strong Revenue Growth: Recent results show double-digit increases in revenue, bookings, and contracted backlog, with Workday Products ARR also rising. Company updates indicate momentum continuing into the following year, supported by a larger order book.

Product Line Growth: Workday Products expanded, with ARR increasing and the Smart suite adopted by a large customer base alongside new offerings such as Pay Transparency resold by Workday in Europe. Unique credentials across Services, Software, and Extend underscore a growing product footprint in the Workday ecosystem.

Strong Market Position & Advantage: Independent assessments place the firm as a Leader across all three Workday quadrants in Europe and a trusted prime on major UK public‑sector programs. A sizable installed base and repeat large government awards reinforce an advantaged regional position.

TRG Screen
Information Technology • Software
11 Offices
267 Employees
32 Benefits Hiring Now

TRG Screen is the leading provider of software used to monitor and manage subscription spend & usage across the entire enterprise. TRG Screen is uniquely positioned to offer the full spectrum of enterprise subscription management capabilities across: ► Spend management – Optimize Spend (inbound licensing) ► Usage management – ResearchMonitor (online resources, applications & terminals) & XMon (data feeds) ► Enquiry & workflow –...

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TRG Screen
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Exegy
Big Data • Fintech • Information Technology • Software • Analytics
7 Offices
130 Employees
20 Benefits Hiring Now

Exegy provides ultra-high performance, hardware-accelerated computing appliances that process market data for financial organizations. Exegy is the established leader in providing real-time market data solutions with an unparalleled combination of speed, capacity, features, and service. Today Exegy serves as a strategic partner to leading principal traders, agency brokers, exchanges, Alternative Trading System (ATS) and dark pool operators, market makers, hedge funds,...

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Exegy
Yell Limited
Agency • Digital Media • Information Technology • Marketing Tech
2 Offices
1,535 Employees
13 Benefits Hiring Now

Yell is a digital marketing and online directory business in the United Kingdom, offering services such as business listings, reputation reports, website checkers, search marketing, and display advertising to help small and medium-sized businesses improve their online presence.

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Yell Limited

Yell Limited's Top Stability & Growth Strengths

Product Line Growth: Solutions revenue expanded sharply and now represents a substantial share of the business. Higher-value digital packages are gaining traction, with average revenue per customer rising and most new sales coming from this segment.

Cost & Operational Efficiency: Margins and EBITDA were maintained or modestly improved despite top-line contraction through strict overhead reductions and targeted capex cuts. Leaner execution is helping to stabilize profitability during the transition.

Healthy Cash Flow: Operating cash generation improved while revenue declined. Stronger cash conversion is supported by cost discipline and a mix shift toward higher-margin offerings.

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
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
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.

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
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
CI&T
Information Technology • Consulting
22 Offices
6,474 Employees
28 Benefits

CI&T is your end-to-end digital transformation partner. As a digital native, we bring a 27-year track record of accelerating business impact through complete and scalable digital solutions. With a global presence of 6,000+ professionals in strategy, research, data science, design and engineering, we unlock top-line growth, improve customer experience and drive operational efficiency.

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CI&T

CI&T's Top Stability & Growth Strengths

Strong Revenue Growth: Revenue rose 14.9% year over year in Q3 2026, marking the eighth consecutive quarter of double-digit organic expansion, with nine‑month revenue up 19.8%. Management raised the full‑year outlook to 16%–18% organic growth and cited a sales pipeline roughly 50% larger than a year earlier.

Strong Market Position & Advantage: Independent analyst evaluations position CI&T as a Leader in modern application development, with additional recognition in Gartner and ISG frameworks that reinforce competitive standing in core niches. Everest Group’s placements in certain AI categories still acknowledge credible capabilities even where leadership is not universal.

Innovation-Driven Growth: Proprietary AI tools (e.g., Data.Mate) and agentic SDLC approaches are actively deployed with enterprises, supporting outcome‑based engagements and delivery productivity. These methods are associated with sequential margin gains, with adjusted gross margin reaching 36.6% in Q3 2026.

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
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.

VIAVI Solutions
Information Technology
11 Offices
4,570 Employees
30 Benefits

VIAVI Solutions (NASDAQ: VIAV) is a global leader in both network and service enablement and optical security performance products and solutions. Our technologies contribute to the success of a wide range of customers – from the world’s largest mobile operators and governmental entities to enterprise network and application providers to contractors laying the fiber and building the towers that keep...

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VIAVI Solutions

VIAVI Solutions's Top Stability & Growth Strengths

Strong Revenue Growth: Recent quarters show substantial year-over-year and sequential revenue increases, with guidance indicating continued momentum. Non-GAAP operating margins and earnings improved alongside strength from data center and aerospace/defense demand.

Strong Market Position & Advantage: The company is described as a global leader in network test, monitoring, assurance, and optical technologies, with flagship platforms viewed as industry standards and presence alongside top peers. Strategic acquisitions and partnerships broaden capabilities in high-speed Ethernet, security testing, and Open RAN, reinforcing competitive positioning.

Diversified Revenue Streams: Growth is supported by multiple end-markets including data centers, aerospace/defense, and optical security products, reducing reliance on traditional service providers. Contributions from recently acquired product lines further expand exposure across these segments.

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