Explore top tech companies
All Filters
Office Type

Industry

Size

Open Jobs

Remote Jobs

Tech Stack

Top Tech Companies in Belfast (536)

Zesty
Marketing Tech • Social Media • Analytics • Design
3 Offices
23 Employees

Zesty is an award-winning digital strategy, design & development agency with offices in the UK and Ireland, offering an unrivalled technical and creative digital service to our clients Our services include: Strategic Consultancy Creative Web Design, UX & UI Web Development & Support Insights Application Development Voice Interaction Development Project & Account Management Visit us at www.simplyzesty.com to find out...

• •
• •
Zesty
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...

• •
• •
Systems Limited MEA
Larsen & Toubro
Transportation • Energy • Defense • Industrial • Renewable Energy
34 Offices
140,000 Employees
5 Benefits

Headquartered in Mumbai, Larsen & Toubro Limited is one of the largest and most respected companies in India's private sector. With over 80 years of a strong, customer focused approach and a continuous quest for world-class quality, L&T has unmatched capabilities across technology, engineering, construction, and manufacturing, and maintains a leadership in all its major lines of business.

• •
• •
Larsen & Toubro

Larsen & Toubro's Top Stability & Growth Strengths

Strong Revenue Growth: Recent quarters show double‑digit year‑on‑year growth in revenue and profit, with H1 FY26 continuing the positive trend. Order momentum across infrastructure and energy projects is supporting top‑line expansion.

Resilient & Sustainable Growth: Record order inflows have lifted the consolidated order book to historic levels, providing multi‑year execution visibility. Management guidance and modest improvement in project margins and working‑capital intensity indicate an emphasis on quality growth and resilience.

Market Expansion: International demand, notably in the Middle East, is driving a rising share of new orders and revenue. Large overseas wins in hydrocarbons and grid projects underscore expanding global reach beyond the domestic market.

GitHub
Software
3 Offices
3,232 Employees
30 Benefits

GitHub is the best place to share code with friends, co-workers, classmates, and complete strangers. Over 31 million people use GitHub to build amazing things together across 97+ million repositories. With all the collaborative features of GitHub, it has never been easier for individuals and teams to write faster, better code.

• •
• •
GitHub

GitHub's Top Stability & Growth Strengths

Strong Market Position & Advantage: GitHub is widely regarded as the category leader with unmatched scale, network effects, and community gravity that make it the default hub for collaboration and discovery. Its rich ecosystem, social discoverability, and enterprise-grade options reinforce adoption across organizations.

Innovation-Driven Growth: AI-assisted development via Copilot and an end-to-end workflow (Actions, Packages, security, Codespaces) are catalyzing usage and deepening engagement. Tight IDE and platform integrations reduce friction and anchor developers in the product.

Market Expansion: Rapid growth in developers, repositories, and contribution activity indicates broad-based expansion, with AI availability accelerating sign-ups. Enterprise momentum alongside rising AI adoption suggests widening reach across both individuals and organizations.

Lightspeed POS
17 Offices
1,983 Employees
29 Benefits

Powering the businesses that are the backbone of the global economy, Lightspeed’s one-stop commerce platform helps merchants innovate to simplify, scale and provide exceptional customer experiences. The cloud solution transforms and unifies online and physical operations, multichannel sales, expansion to new locations, global payments, financing and connection to supplier networks. Founded in Montréal, Canada in 2005, Lightspeed is dual-listed on the...

• •
• •
Lightspeed POS
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
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
Versant Media
Digital Media • News + Entertainment • Sports
21 Offices
6,927 Employees

VERSANT is a global media and technology company operating a portfolio of established brands across political news and opinion, business news and personal finance, golf, sports, and genre entertainment. Its offerings span television networks, digital entertainment, advertising, sports media, consumer marketplaces, and software-enabled services. The company uses iconic brands and digital platforms to inform audiences, shape culture, connect consumers, and...

• •
• •
Versant Media
GTT
Information Technology • Security • Design
33 Offices
3,031 Employees
29 Benefits

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,...

• •
• •
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.

Let Your Resume Do The Work
Upload your resume to be matched with jobs you're a great fit for.

Ardmac
Industrial
12 Offices
446 Employees
Hiring Now

Ardmac is an international specialist construction company that designs and delivers high-value workspaces and technical environments. Its services include high-tech cleanrooms, data-centre solutions, fit-outs, specialised refurbishments, and turnkey construction of manufacturing facilities. Serving life-sciences, technology, microelectronics, electric-vehicle battery, and industrial clients, Ardmac manages complex, mission-critical projects from design and manufacture through construction, commissioning, qualification, and validation worldwide.

• •
• •
Ardmac
Learning Pool
Edtech • Software
7 Offices
456 Employees
19 Benefits Hiring Now

Learning Pool is a learning technology company that optimizes employee performance with intelligent, data-driven experiences. Through its enterprise portfolio, Learning Pool has crafted learning journeys for thousands of organizations and their business units worldwide, enabling smarter compliance, onboarding, and upskilling. The company’s dedication to creating business impact and constantly innovating is the reason customers like Valvoline, Villeroy & Boch, and...

• •
• •
Learning Pool
Strikepay
Fintech • Payments • Software • Financial Services
3 Offices
7 Employees

A leading digital tipping company across over 30,000 locations with globally patent-pending technology. 2024 Spiders Awards Winner Sponsored by Deloitte Digital 2024 Finance Award Winner at the ESG Awards in association with Grant Thornton. 2023 Best Payment Solution Award at the National Fintech Awards with Fidelity Investments 2022 Winner At the KPMG Financial Services Awards 2021 Grand Prix Overall Winner at the National Startup...

• •
• •
Strikepay
SustainIQ
Software • Business Intelligence
Belfast
25 Employees

SustainIQ is the all-in-one sustainability and ESG reporting software that measures, monitors, and reports on the social, economic, and environmental performance of businesses. We save sustainability professionals from wasting time chasing teams, sites, and regions for reporting information. No more unreadable spreadsheets, awkward (and incorrect) calculations and endless report building. With SustainIQ, simply pull, input or bulk upload data and...

• •
• •
SustainIQ
Persistent Systems
Artificial Intelligence • Cloud • Information Technology • Software • Cybersecurity • App development • Big Data Analytics
54 Offices
23,000 Employees
18 Benefits
See Beyond, Rise Above

Persistent Systems is a leading provider of digital transformation services, offering innovative solutions tailored to various industries worldwide. With a robust global presence, they deliver cutting-edge services in product engineering, digital strategy, and data analytics, helping businesses thrive in today's rapidly evolving landscape. From healthcare and financial services to retail and manufacturing, Persistent Systems empowers organizations across diverse sectors to...

• •
• •
Persistent Systems
aPriori Technologies
2 Offices
400 Employees
23 Benefits
aPriori helps leading manufacturers make products for a better world on time and on budget while also minimizing the env

aPriori delivers strategic insights for Manufacturers to continuously decide how to design a product and where to manufacture it to optimize cash flow, accelerate revenue growth, and improve margin. This unique collaborative platform combines Product Cost Management, Design for Manufacturability and Sustainability, and Supplier Collaboration capabilities. The platform includes more than 450 manufacturing process simulation and more than 80 regional...

• •
• •
aPriori Technologies

aPriori Technologies's Top Stability & Growth Strengths

Strong Market Position & Advantage: Analyst awards and repeated positioning as a leading specialist in simulation-driven should-costing/DFM support a strong niche competitive position, with differentiation around CAD-driven “digital factory” simulation plus CO2e insights.

Investor Backing & Capital Strength: Multiple funding events are cited (Series D in 2021 and a growth investment/credit facility in 2023), indicating access to capital consistent with continued scaling and product investment.

Innovation-Driven Growth: Ongoing cloud releases and stated expansion of AI-driven and sustainability capabilities indicate active product development intended to maintain differentiation and support adoption.

OneAdvanced
Software
10 Offices
2,698 Employees
15 Benefits

Founded in 2008 OneAdvanced has grown into of the UK’s largest providers of business software and services serving global customers with an annual turnover of £330M+. We manage 1.5 million 111 calls per month, support over 2 million FE learners across the UK, handle over 10 million wills, and so much more. Powering the world of work. We power the world...

• •
• •
OneAdvanced
Xperience
Cloud • Cybersecurity
5 Offices
172 Employees

Unlock the full potential of your business with digital solutions built for you and with you. Our industry experts get to know your business inside-out, exploring your processes, pain points and people, to build tailored technology across Cloud & IT Services, Cyber Security, CRM and ERP. With solutions designed around your operations, you get the freedom to be more productive...

• •
• •
Xperience
Advanced
Software • Business Intelligence
10 Offices
2,685 Employees
15 Benefits Hiring Now

Founded in 2008 Advanced has grown into of the UK’s largest providers of business software and services serving 20,000 global customers with an annual turnover of £330M+. We manage 1.5 million 111 calls per month, support over 2 million FE learners across the UK, handle over 10 million wills, and so much more. Powering the world of work. We power...

• •
• •
Advanced
Vivo (Telefônica Brasil)
Digital Media • Mobile
28 Offices
41,079 Employees
3 Benefits

Vivo (Telefônica Brasil) is part of the Telefónica Group and with more than 94 million customers, of which 75 million mobile and 19 million fixed, we are the largest telecommunications company in Brazil, with nationwide presence and a complete, convergent portfolio of products, combining fixed, mobile and digital services. Our purpose is “Digitalize to Bring Closer”, helping to build a digital...

• •
• •
Vivo (Telefônica Brasil)
Alianza, Inc.
Cloud • Software
4 Offices
650 Employees
16 Benefits
Alianza is redefining the future of communications.

Alianza is the leading global Intelligent Communications Fabric company, empowering service providers to transform networks and accelerate growth. Our modern architecture unifies infrastructure with orchestration to deliver high-value, AI-infused communication experiences across fixed and mobile communications networks. By bridging legacy systems with modern software-defined technologies, we enable providers to simplify operations, innovate faster, and monetize new opportunities in business and...

• •
• •
Alianza, Inc.

• •

• •

• •

• •

Popular Company Searches in Belfast

Tech Companies in Belfast
3D Printing Companies in Belfast
3PL Companies in Belfast
Adtech Companies in Belfast
Aerospace Companies in Belfast
Agencies in Belfast
Agriculture Companies in Belfast
Analytics Companies in Belfast
Angel Investors & VC Firms in Belfast
App Development Companies in Belfast
Appliances Companies in Belfast
AI Companies in Belfast
Automation Companies in Belfast
Automotive Companies in Belfast
Beauty Companies in Belfast
Data Analytics Companies in Belfast
Big Data Companies in Belfast
Biotech Companies in Belfast
Blockchain Companies in Belfast
Business Intelligence Companies in Belfast
Cannabis Companies in Belfast
Chemical Companies in Belfast
Cloud Companies in Belfast
Co-Working Spaces & Incubators in Belfast
Computer Vision Companies in Belfast
Consulting Firms in Belfast
Conversational AI Companies in Belfast
Cryptocurrency Companies in Belfast
Cyber Security Companies in Belfast
Data Privacy Companies in Belfast
Database Companies in Belfast
Defense Companies in Belfast
Design Companies in Belfast
Digital Media Companies in Belfast
E-commerce Companies in Belfast
Edtech Companies in Belfast
Energy Companies in Belfast
Enterprise Web Companies in Belfast
Esports Companies in Belfast
Event Companies in Belfast
Fashion Companies in Belfast
Financial Services Companies in Belfast
Fintech Companies in Belfast
Fitness Companies in Belfast
Food Companies in Belfast
Gaming Companies in Belfast
Generative AI Companies in Belfast
Greentech Companies in Belfast
Hardware Companies in Belfast
Health Tech Companies in Belfast
Hospitality Companies in Belfast
HR Tech Companies in Belfast
Industrial Companies in Belfast
IT Companies in Belfast
IaaS Companies in Belfast
Insurance Companies in Belfast
IoT Companies in Belfast
Kids + Family Companies in Belfast
Legal Tech Companies in Belfast
Logistics Companies in Belfast
Machine Learning Companies in Belfast
Manufacturing Companies in Belfast
Martech Companies in Belfast
Metaverse Companies in Belfast
Mobile Companies in Belfast
Music Companies in Belfast
Nanotechnology Companies in Belfast
Natural Language Processing Companies in Belfast
News + Entertainment Companies in Belfast
NFT Companies in Belfast
On-Demand Companies in Belfast
Payments Companies in Belfast
Pet Companies in Belfast
Pharmaceutical Companies in Belfast
Productivity Companies in Belfast
Professional Services Companies in Belfast
Proptech Companies in Belfast
Quantum Computing Companies in Belfast
Real Estate Companies in Belfast
Renewable Energy Companies in Belfast
Retail Companies in Belfast
Robotics Companies in Belfast
Sales Companies in Belfast
Security Companies in Belfast
Semiconductor Companies in Belfast
SEO Companies in Belfast
Sharing Economy Companies in Belfast
Social Impact Companies in Belfast
Social Media Companies in Belfast
Software Companies in Belfast
Solar Energy Companies in Belfast
Sports Companies in Belfast
Telehealth Companies in Belfast
Transportation Companies in Belfast
Travel Companies in Belfast
Utilities Companies in Belfast
VR Companies in Belfast
Wearables Companies in Belfast
Web3 Companies in Belfast

Sign in to save company job alert.

Create Free Account