Best High Tech Companies in Belfast, United Kingdom
The 48 best High Tech companies in Belfast, United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Sisaf.
Our analysis of 67 High Tech companies
$59.6b in tracked funding; 89% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best High Tech companies in Belfast
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sisaf Provider of drug delivery nano silicon-based drug delivery systems | $33M | 68 mo ago | Series B | Suzanne Siebert Founder & CEO | 2006 | WordPressMySQLPHP+20 | 95 patents Silicon-based drug delivery platforms and therapeutic formulation technologies | — |
| 2 | Axial3D Developer of AI-powered 3D medical imaging solutions 64Growth top 21%Funding top 36%Talent top 38%Moat top 39% All 10 signals ▾Growthtop 21% Fundingtop 36% Talenttop 38% Moattop 39% AItop 45% Techtop 49% Fin. healthtop 49% Marketbottom 43% Globalbottom 39% Newsbottom 18% Growth: Revenue +99% YoY · Fresh capital in last 24 mo Funding: Raised $26.5M across 9 rounds · 9 rounds over 11 yrs (0.8/yr) rank vs industry peers · Fliar Intelligence Index 64/100 | $27M | 19 mo ago | Series C | Daniel Crawford Founder & CSO | 2014 | Cart FunctionalityWordPressMySQL+29 | — | 2 launchs |
| 3 | SideQuest App-based platform offering VR games distribution solutions | $16M | 46 mo ago | Series A | Orla Harris Co-Founder & COO | 2019 | TypeScriptNode.jsChart.js+22 | — | — |
| 4 | Cumulus Neuro AI and cloud-based brain physiology analysis tool for clinical trials 62Growth top 20%Funding top 30%News top 33%Moat top 39% All 7 signals ▾Growthtop 20% Fundingtop 30% Newstop 33% Moattop 39% Talentbottom 49% Marketbottom 47% Globalbottom 39% Growth: Headcount 21 → 41 (+95%) across vintages · Fresh capital in last 24 mo Funding: Raised $15.2M across 7 rounds · 7 rounds over 9 yrs (0.8/yr) rank vs industry peers · Fliar Intelligence Index 62/100 | $15M | 13 mo ago | Series A | Brian Murphy Co-Founder & Chief Scientific Officer | 2015 | — | — | — |
| 5 | 3DEO Provider of geospatial analytics platform for multiple industries | $6M | 40 mo ago | Seed | — | 2015 | — | — | 2 launchs |
| 6 | Sensoteq Developer of IoT monitoring solutions for industrial machinery 42Tech top 30%Talent top 38%Funding top 44%Growth top 45% All 11 signals ▾Techtop 30% Talenttop 38% Fundingtop 44% Growthtop 45% Producttop 47% Patentsbottom 42% Moatbottom 42% Globalbottom 41% Marketbottom 37% Innovationbottom 37% Newsbottom 22% Tech: 37 technologies across 5/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 42/100 | $6M | 32 mo ago | Series A | Idir Boudaoud Co-Founder & CEO | 2016 | Wix eCommerceCart FunctionalityWix+22 | 2 patents Sensor mounting hardware for precision measurement devices | — |
| 7 | Causeway Sensors Nano-sized sensing chips for detection of early stage cancer | $5M | 55 mo ago | Seed | — | 2013 | — | 20 patents High‑throughput multi‑well bioassay analysis and nanostructured plasmonic biomarker sensors. | — |
| 8 | Enzai AI governance platform allowing to build and deploy AI | $4M | 37 mo ago | Seed | Ryan Donnelly Co-Founder | 2021 | Framer SitesRechartsReact+11 | — | — |
| 9 | Intelesens Provider of defibrillation and ECG electrodes for vital signs monitoring | $3M | 135 mo ago | Acquired | — | 2000 | — | 14 patents Patents concentrated in health & consumer products | — |
| 10 | Angoka Provider of cyber security solutions for machine-to-machine communications and infrastructure | $3M | 45 mo ago | Seed | Daniela Menzky Co-Founder & COO | 2019 | WixSentryBootstrap+13 | 14 patents Cryptographic key amplification/management and RFID tag systems for secure communications. | — |
| 11 | SpeechStorm The Personalisation Platform for Voice, Mobile and Web. | $3M | 194 mo ago | Acqui-Hired | Oliver Lennon CEO | 2010 | — | — | — |
| 12 | Digital Iron Generative AI and data ingestion solutions for machinery after sales | $2M | 25 mo ago | Seed | Ciaran Gillen Co-Founder & CEO | 2023 | Framer SitesReactPriority Hints+8 | — | — |
| 13 | Kinsetsu Platform offering IoT asset tracking software | $2M | 43 mo ago | Acquired | Joanne O’Doherty Founder | 2016 | — | — | 2 launchs · 1 partnership |
| 14 | Kami Provides platform to develop conversational assistant | $2M | 113 mo ago | Deadpooled | Yu Fai Ho Co-Founder | 2015 | — | — | — |
| 15 | Kraydel Provider of AI and cloud-based IoT solutions for remote health monitoring | $2M | 109 mo ago | Seed | — | 2016 | — | 13 patents Acoustic and physiological monitoring systems with sound‑responsive and messaging capabilities | — |
| 16 | Brewbot Smart personal brewery | $2M | 142 mo ago | Deadpooled | Jonny Campbell Co-Founder | 2013 | — | — | — |
| 17 | Liopa Developer of visual speech recognition technology for enterprises | $1M | 72 mo ago | Deadpooled | Fabian West Co-Founder & CTO | 2015 | — | 3 patents Biometric liveness detection for secure authentication systems | — |
| 18 | Wia Provider of hardware, wireless networks, and cloud analytics for energy monitoring | $920K | 108 mo ago | Seed | Conall Laverty Founder & CEO | 2015 | — | — | — |
| 19 | Sensurity Perimeter Intrusion Detection Systems | $900K | 155 mo ago | Seed | Andrew Fulton Co-Founder | 2012 | — | 3 patents Bistatic radar scanning systems for perimeter intrusion detection. | — |
| 20 | UMA Provider of digital assistant for enterprises to provide business intelligence | $794K | 53 mo ago | Seed | Stephen Milner Founder & CTO | 2016 | WordPressApple iCloud MailMySQL+31 | — | — |
| 21 | Inclutech Provides inclusive technology solutions for public and personal safety | $549K | 13 mo ago | Seed | Les Hume Co-Founder & COO | 2022 | — | — | 1 launch |
| 22 | HALO Body Cameras Developer of body cam and cloud-based digital asset management solutions | $298K | 30 mo ago | Seed | Alan Whitley Co-Founder | 2019 | — | — | — |
| 23 | Machine Eye Developer of machine vision systems for industrial automation applications | $103K | 64 mo ago | Funding Raised | — | 2018 | — | — | — |
Top 12 High Tech companies in Belfast
#1
Series A · Belfast, Northern Ireland · founded 2015 · 41 employees$15.2Mraised▾
AI and cloud-based brain physiology analysis tool for clinical trials. It has a cloud-based platform and device that provides a next generation integrated physiological and digital biomarker platform that has the ability to perform assesment tests, analyse results, real-time data collection, and more for drug discovery.
- Jul 2025Series A$4.4M
- May 2021Series A$8.3M
- Oct 2020Grant (prize money)$237.8K
- Jul 2020Series A$1.4M
#2
Series C · Belfast, Northern Ireland · founded 2014 · 49 employees$26.5Mraised▾
Developer of AI-powered 3D medical imaging solutions. The tools help medical device companies and hospitals streamline surgical planning, device development, and personalized care by automating segmentation and reducing manual effort.
- Dec 2024Series C$18.2M
- Oct 2023Series B$2.4M
- Sep 2022Series B$15M
- Mar 2021Series B$4.1M
#3
Seed · Belfast, Northern Ireland · founded 2022$548.7Kraised▾
Provides inclusive technology solutions for public and personal safety. It creates and provides solutions designed to protect vulnerable individuals and ensure their voices are heard. The company focuses on integrating inclusive design principles into its technology development process. Their work aims to contribute to a sustainable future through technological innovation.
- Jun 2025Seed$548.7K
#4
Series A · Belfast, Northern Ireland · founded 2016 · 39 employees$5.6Mraised▾
Developer of IoT monitoring solutions for industrial machinery. Its main products are a fleet of vibration sensor-based devices that monitors the health of the machinery, diagnose it and provide warnings when repairs are needed. It also provides an analytics platform for the to view the data collected from the sensor devices. These devices feature user-replaceable batteries and waterproof bodies and cater to manufacturing, pharmaceutical, oil and gas, food and beverage, packaging, and power generation industries.
- Nov 2023Series A$3.8M
- Jan 2023Venture Debt$618.9K
- Jan 2022Seed$339.2K
- Apr 2019Seed$193.6K
#5
Seed · Belfast, Northern Ireland · founded 2023$2.1Mraised▾
Generative AI and data ingestion solutions for machinery after sales. The platform integrates machinery manuals, CRM data, and ERP systems to create a centralized source for after-sales operations. It offers an AI-based technical assistance service that provides answers to machinery-related queries.
- Jul 2024Seed$2.1M
#6
Series A · Belfast, Northern Ireland · founded 2019 · 5 employees$15.7Mraised▾
App-based platform offering VR games distribution solutions. It allows users to distribute games on Facebook. Users can share reviews about games and rate the games on the platform.
- Oct 2022Series A$12M
- Oct 2021Seed$3M
- Sep 2020Seed$650K
- Aug 2020Seed$500K
#7
Series B · Belfast, Northern Ireland · founded 2006 · 18 employees$32.6Mraised▾
Provider of drug delivery nano silicon-based drug delivery systems. It develops nano silicon particles for medicines, cosmetics, and nutraceuticals. Its platform uses elemental silicon particles with a honeycomb pore structure that allows controlled drug loading, targeting, and release. It also develops cosmeceuticals or nutraceuticals under the product name.
- Nov 2020Series B$13.2M
- Jul 2019Series A$3.8M
- Aug 2018Series A—
- May 2018Series A$4.3M
#8
Seed · Belfast, Northern Ireland · founded 2015 · 14 employees$6.4Mraised▾
Provider of geospatial analytics platform for multiple industries. It generates, in an automated way, 3D object models with real physical properties, from multiple data sources, and leverages technologies like 3D visualization, earth observation, and big data analytics to facilitate automated observation and interpretation.
- Mar 2023Seed$2.7M
- Aug 2021Seed$2M
- Seed$2.7M
#9
Seed · Belfast, Northern Ireland · founded 2021 · 3 employees$4Mraised▾
AI governance platform allowing to build and deploy AI. It provides tools for measuring progress in AI responsibility and offers actionable steps for managing AI risks. Its API enables organizations to work across functions on AI governance.
- Jun 2023Seed$4M
#10
Seed · Belfast, Northern Ireland · founded 2013 · 5 employees$4.7Mraised▾
Causeway Sensors develops, manufactures and sells sensing packages, consumable biochips, software. Causeway Sensors has developed nano-sized sensing chips that can be used to detect early-stage cancer and other diseases due to its ability to sense the presence of very low levels of proteins and fluctuations in their behaviour.The technology also has uses in food security and drug discovery.
- Jan 2022Seed$2.1M
- Jan 2018Seed$1.7M
- Jun 2016Seed$760.5K
- Nov 2013Seed$172K
#11
Seed · Belfast, Northern Ireland · founded 2019 · 21 employees$2.7Mraised▾
Provider of cyber security solutions for machine-to-machine communications and infrastructure. The company offers products and solutions for machine identity management and zero trust management. Threat analysis and risk assessment services are also provided. These offerings cater to industries including defence, space, smart mobility, and industrial systems, ensuring secure and resilient digital infrastructure.
- Nov 2022Seed$2.7M
- May 2022Grant (prize money)$2.1M
#12
Acquired · Belfast, Northern Ireland · founded 2016 · 21 employees$1.9Mraised▾
Platform offering IoT asset tracking software. It uses sensor based technologies and digital connectivity to track equipment, people, fleet, or inventory. It provides tools for the automation of checklists for equipment and crew, real time tracking, management, and environmental monitoring of assets through digital mapping, historical traceability solutions of all managed assets, locations, durations, directions, analytics, and more. It caters its solutions to industries such as government, healthcare, education, commercial, transport, utilities, and manufacturing industries.
- Jan 2023Seed$1.9M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of High Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Belfast researches in semiconductors
- Queen\'s University Belfast17
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.