Bulgaria’s deep tech startup scene is starting to attract serious attention. Last week, Sofia-based EnduroSat raised €89.9 million – one of the largest space-tech financings in Southeast Europe and an important milestone broadcasting the country’s growing innovation potential.
Bulgaria offers a combination of strong engineering talent, lower cost base, and rich innovation history, meaning the country could play a significant role in the broader European deep tech value chain – particularly in areas like space infrastructure, hydrogen energy, agricultural robotics, and industrial AI.
We reached out to a contact from the Bulgarian Small and Medium Enterprises Promotion Agency to learn about the top ten Bulgarian deep tech startups we – and everyone else – should be paying attention to. The following startups and scale-ups stand out for their innovation, technological depth, and growth potential.
10 stand-out deep tech startups from Bulgaria
1. Nasekomo
Transforms organic by-products into insect-based proteins (Black Soldier Fly) for animal feed and other sustainable bioproducts.
Founded in 2017 by Olga Marcenac, Xavier Marcenac, and Marc Bolard, Nasekomo became the first insect-rearing farm in the South-East European region. The company leverages Black Soldier Fly larvae to convert organic agro-industry waste into high-quality protein, oil, and fertilizer for the feed and agriculture industries. Nasekomo has earned recognition as a member of EIT Rising Food Stars, won the Green Start-Up of the Year Award, and was named the national winner of the international Energy Globe Award from over 2,000 applicants across 180 countries.
2. ProsFit
Pioneers digital solutions for prosthetic and orthotic care, improving accessibility and personalization for users worldwide.
Founded in 2014 by the Hutchison family following Christopher Hutchison’s life-changing accident, ProsFit emerged from a vision to revolutionize prosthetic fitting through technology. The company’s flagship digital solution, PandoFit, enables distributed care globally through a streamlined and scalable approach. ProsFit also deploys PandoPoints – low-investment, digitally-enabled patient care units that can reach unserved users even in remote environments. Christopher now serves as Chairman and CTO, while his father Alan leads as CEO.
3. EnduroSat
Designs and builds nanosatellites and space data services, enabling affordable access to space for commercial and research missions.
Founded in an attic apartment in 2015, EnduroSat is on a mission to transform the complex satellite industry into a streamlined data service. The company enables instant access and transactions with space data from hundreds of sensors in orbit, democratizing space access for commercial and research purposes. In 2025, marking a decade of growth, EnduroSat celebrated signing its 400th customer, cementing its position as a leading nanosatellite and space data services provider.
4. Hydrogenera
Develops hydrogen-based energy technologies for clean production, storage, and utilization.
Founded in 2016 and based in Sofia, Hydrogenera possesses the technology and expertise to complete the entire hydrogen supply chain – from production and compression to storage and distribution. The company’s alkaline electrolyzers are preferred for their reliability, innovative controlling system, and energy efficiency. With more than 100 projects for hydrogen systems completed, Hydrogenera is recognized as a leader in the production and integration of alkaline electrolyzers in Eastern and Central Europe.
5. Smart Farm Robotix
Focuses on autonomous agricultural robots that optimize farming efficiency and sustainability.
Smart Farm Robotix has developed RoboAiWeeder, the first 100% solar-powered weeding robot designed for challenging terrains including hilly and mountainous environments. The robot uses artificial intelligence image recognition to distinguish weeds from desired plants, applying chemical-free weeding methods with surgical precision. GPS devices and sensors enable robust self-navigation in remote terrains, while its compact, lightweight design requires only a standard pick-up vehicle and two people for transport, offering farmers a reliable alternative to manual weeding and expensive herbicides.
6. ECEON
Provides advanced AI-driven energy optimization and industrial automation solutions.
Founded in 2022 as a half-German, half-Bulgarian company with headquarters in Germany and an R&D center in Bulgaria, ECEON develops autonomous mobile robots that function as collaborative coworkers. The company’s intelligent robots reduce material handling costs by up to 90% while increasing productivity by 200-300%. Built on breakthroughs in cognitive visioning and self-learning systems, ECEON’s robots require no prior training to deploy, empowering humans to focus on high-value tasks while automating time-consuming and repetitive operations.
7. Evrotrust Technologies
A leading provider of qualified trust and digital identity services under the EU eIDAS regulation.
Evrotrust Technologies was founded in 2015 on the premise that physical ID cards and paper documents are outdated in the digital age. The company provides qualified trust services offering identity verification through their EU-notified eID scheme certified at the highest level of assurance. Evrotrust enables quick document signing with qualified electronic signatures, positioning itself as a partner for continuous compliance under eIDAS 2.0, with a leadership team combining extensive expertise across technology, healthcare, and behavioral science.
8. PREDICTO
Delivers predictive maintenance and industrial IoT solutions for smarter and more efficient manufacturing.
Founded in 2023, PREDICTO offers a plug-and-play predictive maintenance solution requiring minimal human setup. The system uses sensors to measure vibration and temperature, forecasting issues by analyzing machine data and identifying anomalies before they escalate. By providing full visibility of the production process and AI-driven maintenance scenarios, PREDICTO helps plant managers and maintenance teams keep production running smoothly, making predictive maintenance universal and accessible across industries while enabling just-in-time repairs and eliminating unplanned downtime.
9. Micar21
A biotech company utilizing AI and computational modeling to accelerate in-silico drug discovery and molecular design.
Founded in 2016, Micar21 operates as an AI drug discovery factory focused on creating novel drug molecules for a wide range of diseases. The company specializes in the entire drug discovery process using structure-based in-silico design from scratch through the preclinical phase, with advanced predictions of activity, selectivity, and ADMET properties. Micar21 concentrates on proof-of-concepts and hit-to-lead achievements in neurology, oncology, cardiovascular medicine, dermatology, and rare diseases, patenting newly discovered molecules for licensing to pharmaceutical partners or developing them through spin-out companies.
10. Allterco Robotics
An IoT company behind the Shelly smart device ecosystem, innovating in connected hardware and automation.
Allterco Robotics is the company behind Shelly, the first Bulgarian company specializing in hardware and software development for the Internet of Things, particularly home automation solutions. Listed on both the Bulgarian and Frankfurt stock exchanges, with offices spanning Bulgaria, Germany, Slovenia, the USA, and China, the company develops affordable, smart solutions that make people’s lives easier and help them use energy more efficiently through the globally accessible Shelly ecosystem.
