Deep Tech Startups

Stimline provides software and automation systems for oil and gas well completion and intervention operations, including its IDEX collaboration platform used by energy and service companies for drilling, completion, intervention, and P&A. Its products cover automated wireline, coiled tubing, and carbon rod systems as well as digital planning and rig-site execution tools.

1 investor

Stirweld makes friction stir welding (FSW) technology accessible by supplying FSW heads that add welding capability to existing machining centers and an FSW spindle that converts industrial robots into hybrid welding/machining tools, along with engineering support and training. It serves manufacturers in sectors such as aerospace, automotive, rail, energy, and shipbuilding.

1 investor

STM develops microneedle patch technology for painless, temperature-stable delivery of drugs, vaccines, and supplements to humans, animals, and for nutraceutical applications. The platform eliminates cold-chain storage requirements and enables single-application multi-dose delivery across therapeutic and preventative use cases.

1 investor

STOFF2 produces green hydrogen through zinc intermediate step electrolysis, a technology that combines hydrogen generation with energy storage using renewable sources like solar and wind. The system reduces hydrogen production costs by using electricity during periods of surplus renewable generation and operates without requiring critical materials like platinum, cobalt, or lithium.

1 investor

STRADAai develops U-space and UTM platforms for managing low-altitude airspace and drone operations, including U-space infrastructure, digital twin tools, and regulatory advisory services for Advanced Air Mobility. It serves drone operators and organizations across use cases such as medical deliveries, surveillance, emergency response, law enforcement, infrastructure inspection, and precision agriculture, and is pursuing USSP certification with Italy's ENAC authority.

1 investor

StrainTrace develops a targeted molecular assay for rapid Listeria strain typing, generating a binary strain fingerprint from genetic markers without producing genome sequence data. It serves food safety testing labs and food manufacturers, letting them track strain recurrence over time to distinguish persistent harborage sites from transient contamination.

1 investor

Strategic Thermal Labs develops liquid cooling technology for data centers, including a CDU-replacement solution that eliminates cooling distribution units and recovers power budget. The company offers custom-built liquid cooling IP and a configurable portfolio of liquid cooling products tailored to customer requirements.

1 investor

Stratobotic develops stratospheric robots (high-altitude platforms) that use nature-inspired aerostatic drift and aerodynamic station-keeping modes to remain persistent at over 20 km altitude. The platforms capture ultra high-resolution imagery (under 10 cm ground resolution) for environmental, agricultural, and asset monitoring and change detection.

1 investor

Stratosvir develops engineered viral immunotherapy treatments for advanced cancers, including prostate cancer, using modified viruses to activate the body's immune system against tumors. The company targets patients with advanced solid tumors where current treatment options are limited.

1 investor

Stratotegic develops navigable High-Altitude Platform Station (HAPS) stratospheric balloon systems with autonomous flight control and navigation, providing persistent intelligence, surveillance, and reconnaissance (ISR) and communications augmentation for defence, government, commercial, and research customers. Its dual-use platforms support missions such as Arctic sovereignty, border and maritime monitoring, wildfire and disaster response, and non-terrestrial telecommunication networks, with a stated focus on Canada and allied operations.

1 investor

Stream Ocean develops AI-powered monitoring technology and hardware for real-time marine life and ocean ecosystem tracking. The company serves conservation organizations, researchers, and environmental agencies focused on protecting coral reefs and marine biodiversity.

1 investor

StreamPlay designs and develops embedded vision, Edge AI, and camera systems for defence, security, industrial automation, mobile work machines, and medical imaging applications. The company combines sensor integration, real-time video processing, audio analytics, and artificial intelligence to enable intelligent, connected products across demanding environments.

1 investor

Streetwave collects real-world mobile network coverage data from its own handsets across roads, rail, and pedestrian routes, producing detailed performance maps for every address in surveyed regions. It serves telecoms operators, councils, police, rail operators, and governments, delivering coverage intelligence via dashboards, coverage checkers, and data exports, with a focus on the UK.

1 investor

Start2 Group is a global innovation partner that supports startups through development and commercialization services, working with governments, investors, and corporations across North and South America, Europe, and Asia.

1 investor

Strong Force IP builds and manages patent portfolios focused on technology convergence, particularly at the intersection of AI with other major technologies including IoT, blockchain, autonomous vehicles, and energy systems. The company serves enterprises and R&D organizations seeking first-mover advantage and market positioning through strategic IP acquisition and development.

1 investor

Structura Biotechnology develops computational software and methods that scale cryo-EM structure determination for drug discovery and life sciences research. The company's platforms deliver high-resolution 3D protein reconstructions and real-time analysis for academic and pharmaceutical research teams.

1 investor

Stuart Therapeutics is a clinical-stage pharmaceutical company developing synthetic collagen mimetic peptides (its PolyCol platform) designed to bind and repair damaged helical collagen in the extracellular matrix. Its therapies target chronic eye diseases including dry eye disease, glaucoma, and inherited retinal disorders such as retinitis pigmentosa and age-related macular degeneration.

1 investor

Atelico builds an on-device AI engine for video games that gives characters lifelike intelligence, natural player interaction, and in-world reasoning without relying on cloud AI. The company demonstrates its technology with GARP, a real-time generative-agents simulation running locally on consumer GPU hardware.

1 investor

Sturfee provides a Visual Positioning Service (VPS) that enables augmented reality experiences across entire cities. It offers coverage for cities and countries to support AR applications.

1 investor

Subcritical Systems develops accelerator-driven nuclear energy systems that use a particle accelerator to sustain fission in a subcritical core for electrical power generation in the US. The technology is designed to be inherently safe with no criticality potential and cost-competitive with natural gas.

1 investor

Subra develops scalable superconductor solutions aimed at improving energy transmission and infrastructure. The company positions its technology as supporting clean, connected, and carbon-free energy systems.

1 investor

SUDx-Biotec develops sugar chain-based diagnostic technologies and solutions. The company operates in the biotech sector, headquartered in Kagoshima, Japan.

1 investor

Summit Lithium develops direct lithium extraction (DLE) technology to produce lithium at lower cost and with reduced environmental impact compared to conventional methods. The company serves battery and energy transition markets with a focus on water efficiency and smaller surface footprints.

1 investor

Suden Density develops innovative coating technology for smart coatings. The company has received NSF SBIR/STTR funding for research and commercialization of its coating solutions.

1 investor