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Top Tech Companies in Belfast (504)

Re-Vana Therapeutics
Software • Biotech
Belfast
19 Employees

Re-Vana Therapeutics is a venture-backed, pioneering therapeutics and ocular drug delivery company developing innovative sustained-release biologics to treat serious retinal diseases. The company’s proprietary photo-crosslinked, biodegradable platform technologies, EyeLief®, EyeLief SD™ and OcuLief®, enable custom delivery of a wide range of therapeutic molecules. Numerous platform capabilities create a therapeutic continuum to expand treatment opportunities through both internal development and external,...

Re-Vana Therapeutics
The Depository Trust & Clearing Corporation (DTCC)
10 Offices
5,075 Employees
36 Benefits

With over 45 years of experience, DTCC is the premier post-trade market infrastructure for the global financial services industry. From 21 locations around the world, DTCC, through its subsidiaries, automates, centralizes and standardizes the processing of financial transactions, mitigating risk, increasing transparency and driving efficiency for thousands of broker/dealers, custodian banks and asset managers. Industry owned and governed, the firm...

The Depository Trust & Clearing Corporation (DTCC)

The Depository Trust & Clearing Corporation (DTCC)'s Top Stability & Growth Strengths

Strong Market Position & Advantage: DTCC is consistently portrayed as the backbone and premier post-trade market infrastructure, with systemically important subsidiaries and a central depository role. Its multi-quadrillion processing scale and record activity, alongside very large assets under custody, reinforce entrenched advantage.

Strong Revenue Growth: Recent disclosures indicate higher revenue and net income driven by elevated clearing and settlement activity and record throughput. Growth is further supported by rising assets under custody and expanded clearing participation in U.S. Treasuries.

Innovation-Driven Growth: The firm is advancing tokenization services, distributed ledger initiatives, cloud modernization, and AI capabilities, with pilots and launches scheduled and broad industry collaboration. Leadership in T+1 implementation and new analytics offerings also point to product and platform expansion.

Remus Uomo
Fashion • Retail
2 Offices
17 Employees

Remus Uomo provides design-led, formal tailoring and off-duty casuals to men who take a serious attitude towards fashion. The company is based out of Belfast Victoria Square and also has branch in Glasgow Silverburn.

Remus Uomo
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...

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.

Halliburton
29 Offices
60,000 Employees
2 Benefits

Halliburton Energy Services provides products, services, and integrated solutions for oil and gas exploration, development, and production.

Halliburton
Oatly
Food
2 Offices
936 Employees
7 Benefits

Our sole purpose as a company is to make it easy for people to turn what they eat and drink into personal moments of healthy joy without recklessly taxing the planet’s resources in the process. Oatly was founded back in the 1990s and is based on Swedish research from Lund University. The company’s patented enzyme technology copies nature’s own process and...

Oatly
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...

Clinisys
G4S
Security
15 Offices
76,216 Employees
13 Benefits

G4S is the world’s leading global, integrated security company, specialising in the provision of security services and solutions to customers. Our mission is to create material, sustainable value for our customers and shareholders by being the supply partner of choice in all our markets. G4S is active in around 85 countries and has around 533,000 employees. For more information on...

G4S
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...

Reply
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Siemens Gamesa
Energy • Renewable Energy
3 Offices
21,937 Employees
11 Benefits

Siemens Gamesa is a global technology leader in the renewable energy industry - specifically in the development, manufacturing, installation and maintenance of wind turbines. Being a pioneer in renewables since the 1980s, we put our scale and entrepreneurial culture to work on driving the energy transition towards a sustainable world. We empower our customers, people, and partners to lead the...

Siemens Gamesa
Qualitrol
Energy • Utilities
4 Offices
442 Employees

Qualitrol monitors electrical grid equipment --whether you're a business that creates, manages, or uses electrical grid equipment. Qualitrol's hardware, software, and service offerings are used to deliver energy and make delivering reliable power possible--providing easy access to information anywhere, at any time. Qualitrol was founded in 1945 by a small group of engineers committed to reliable power. Over 75 years later,...

Qualitrol
Almac Group
Pharmaceutical
17 Offices
4,485 Employees
28 Benefits

Partnering to Advance Human Health A unique culture delivering exceptional solutions: Almac is a financially secure, privately owned organisation with 7,500 employees globally. 600+ companies worldwide, including all the market leaders, use our services, testament itself to the quality, innovation and efficiency of our business as proven over the past 50 years. Our vast range of services include: Biomarker Discovery & Development: Pre-clinical...

Almac Group
Alfa Laval
Industrial
12 Offices
13,646 Employees
4 Benefits

Pioneering positive impact! Our pioneering 140-year-old start-up culture is built on the idea that partnership is the key to solving complex problems and unlocking the full potential of resources. So we collaborate closely with our partners, customers, and thought leaders to create game-changing solutions that challenge conventional thinking on quality, efficiency, and innovation. United by a shared commitment to creating positive...

Alfa Laval

Alfa Laval's Top Stability & Growth Strengths

Strong Market Position & Advantage: Company and third‑party sources consistently describe Alfa Laval as a top‑tier, often leading supplier in plate heat exchangers, centrifugal separators and key marine systems, reinforced by a large installed base and global service reach. This entrenched position supports durable share across cycles.

Profitability: Recent disclosures show rising adjusted EBITA and margin improvements through 2025 and into early 2026, even as currency effects weighed on reported growth. This indicates margin resilience amid mixed market conditions.

Resilient & Sustainable Growth: Full‑year 2024 and 2025 reported higher sales with ongoing organic momentum into Q1 2026, and management points to growing demand tied to decarbonization and a scaling service business. Records in orders and invoicing and guidance for slightly higher near‑term demand support a steady growth path.

Ulster Bank
Financial Services
2 Offices
2,062 Employees
11 Benefits

With over 175 years of banking tradition behind us, we have the experience to help our customers make better, more informed financial decisions. We’re a major retail and business bank in the Republic of Ireland and Northern Ireland, offering a range of banking products and services such as current accounts, mortgages, business and corporate banking. We need talented people who care...

Ulster Bank
Yelo
Hardware • Appliances
Carrickfergus
51 Employees

Yelo Limited are the world leaders in the manufacturing of laser diode burn-in and life testing equipment. We are a dynamic engineering company renowned for our bespoke and cutting edge technology, with a variety of customers ranging from large multinational corporations to smaller specialist companies, Yelo designs, manufactures and supports test solutions globally.

Yelo
Hootsuite
Digital Media • Marketing Tech • Social Media • Software • Analytics
8 Offices
5 Benefits
Hootsuite is the leader in social media management, helping brands harness the power of social to ignite their business.

Hootsuite has been on the pulse of how people use social media for over a decade. As the global leader and world’s first social media management platform, we put social to work in every corner of every organization, from the smallest business to the largest enterprise. We are committed to helping customers harness the power of social media to ignite...

Hootsuite
Endeavour Information Solutions
Information Technology • Software
2 Offices
29 Employees

Based in the heart of Belfast and Edinburgh, Endeavour Information Solutions provides technology solutions to organisations across the UK and Ireland. We specialise in Microsoft technologies and solutions such as SharePoint, Office 365, Microsoft Dynamics , Kentico CMS as well as bespoke software development solutions. Endeavour is a member of the Microsoft Partner Network and holds two gold competencies in...

Endeavour Information Solutions
Xiaomi
Hardware • Internet of Things • Robotics
2 Offices
19,597 Employees
8 Benefits

Xiaomi Corporation was founded in April 2010 and listed on the Main Board of the Hong Kong Stock Exchange on July 9, 2018 (1810.HK). Xiaomi is a consumer electronics and smart manufacturing company with smartphones and smart hardware connected by an IoT platform at its core. Embracing our vision of “Make friends with users and be the coolest company...

Xiaomi
Ocula Technologies
eCommerce • Software • Analytics
Belfast
30 Employees

Our mission is to create the online winners of tomorrow through actionable AI today. To deliver this we have created a special SaaS insight platform producing 20% revenue uplifts for major, global retailers and brands. Ocula Boost eCommerce teams need clarity to compete and thrive. Ocula Boost AI provides this by analysing, recommending and actioning the priority optimisations for every...

Ocula Technologies
Budibase
Information Technology • Software
Belfast
22 Employees

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Budibase

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