Top 25 Construction Startup Investors in Estonia (August 2026)

Portfolio highlights

• BirdyChat — A modern work chat app for professionals. Start conversations with anyone using their work email. Collaborate and grow your network.
• ScamGuardian.AI — ScamGuardian develops AI-powered victim simulations to capture actionable scam intelligence
• Rivan Industries — Rivan Industries designs and builds modular, vertically integrated, synthetic fuel plants.

Portfolio highlights

• OTee — OTee's Industrial Automation platform makes it possible to create and manage industrial-grade virtual control systems, based on open standards and architecture!
• Spiral Hydrogen — All-in-one, bubble-free centrifugal electrolyzer with an embedded axial flux generator that sets a new standard in efficiency and simplicity.
• Nanordica Medical — Nanordica Medical develops novel nanoparticle-based antibacterial wound care products.

Portfolio highlights

• Coursy.io — Make employee development more effective with LMS powered by Learning Design
• Waybiller — Bulk TMS solution for end-to-end management: Waybiller transforms your logistics operations, allowing you to handle bulk shipments with precision and speed. The Best E-waybill Software & Bulk TMS Solution
• Bilance — Bilance is a personal finance management app that helps you to track, analyze and plan your finances.

Portfolio highlights

• Themo — Themo's innovation is an algorithm that optimizes the price of exchange electricity and the consumption of electricity. Themo offers an easy and environmentally friendly way to save on electricity consumed by heating.
• Vok Bikes — We build heavy-duty cargo bikes and rent them out to on-demand delivery companies and their couriers — no surprises, no extra fees. Currently active in Tallinn and Vilnius and expanding to London and Berlin Q4 2021.
• UP Catalyst — UP Catalyst produces sustainable carbon nanomaterials and graphite for the green energy storage industry.

Portfolio highlights

• Esgrid — Esgrid provides value-chain sustainability management solutions to medium-sized businesses and financial institutions.
• Ligence — AI Automated Echocardiography - Artificial intelligence-powered automated heart ultrasound echo lab system.
• Soldera — Soldera is unifying energy certificate registries. We give corporate energy buyers, sustainability teams, procurement teams, utilities, and traders one infrastructure layer across fragmented registries so they can procure, manage, and cancel renewable energy certificates with far less manual work.The platform combines aggregated procurement fromthousands of utilities with cleaner registry execution and audit-ready, government-backed cancellation statements traceable to the generating machine. That makes renewable energy certificate management easier to run, easier to evidence, and easier to scale across markets.

Portfolio highlights

• YuMuuv — YuMuuv is an employee wellness platform that uses science-based formulas to capture data and keeps track of physical activity & leaderboard.
• Shen.AI — Discover how Shen AI turns your smartphone into a health companion - no wearables, just powerful, camera-based health insights.
• SegmentStream — At SegmentStream we partner with growth leaders to drive more revenue from paid media through full-funnel attribution, incrementality measurement and automated cross-channel budget allocation powered by predictive AI.

Portfolio highlights

• SigmaOS — SigmaOS is a new type of browser designed for founders, researchers, and content creators to make it better and faster to work on the web.
• Cauldron — Cauldron aim is to create a Worldbuilding is the art form that is foundational to everything at Cauldron. We want people to truly feel they can not only escape into our worlds, but through the advances of Web3, be a part of them.
• Werk — Werk is building a construction labor marketplace, that matches workers internationally to any country, all while automating the paperwork and HR. Our community provides trade union benefits, globally. Think of it as a mix of Deel & LinkedIn, but for construction that disrupts the European gray economy. Werk is building a digital identity forthe workers building our homes and offices.

Portfolio highlights

• Remato — Remato is all-in-one & mobile-first platform to seamlessly manage projects, people and assets. Budget estimating & task planning, field communications & work tracking, real-time overview & automated reports.
• Moderan — Moderan is an online software for commercial real estate lease lifecycle management and asset reporting. So easy, any team can start using it in a day. Get your lease and property information organised. Save time with automated reports and make sure no deadline is missed.
• VideoCV.io — Spend less time reading stacks of resumes, and more time on finding the best fit for your company. VideoCV helps you increase your hiring productivity by streamlining your talent management processes.

Portfolio highlights

• Wirepas — Wirepas offers a standards-based, ultra-reliable mesh connectivity for infrastructure-grade IoT. Proven in millions of devices worldwide.
• Sonder — Sonder's employee care platform is the future of workforce health, medical, safety and wellbeing. One platform. All the support. Learn more.
• X-BOLT Orthapaedics — X-Bolt Trauma Solutions for osteoporotic bone fixation. FDA 510(k) approved. Clinical studies include the WHITE One (n=100) and WHITE Four (n=1,140) randomized control trials.

Portfolio highlights

• GScan — Cosmic-ray based solutions for 3D imaging. GScan redefines the boundaries of 3D scanning with Muon Flux Technology (MFT) detectors. Unparalleled quality, safety, ease-of-use. Scan anything. Detect everything.
• Bolt — The smartest way to move around in cities. Forget expensive taxi rides or slow public transport. Get a ride in minutes. Download the Bolt app for iOS and Android.
• mu-ray.tech — Mu-ray.tech is focused on advancing the field of medical diagnostics and industrial quality control. mu-ray.tech is developing a groundbreaking technology for the rapid, safe and accurate 3D-imaging of the chemical composition of scanned objects, serving critical needs in industrial quality control and medical diagnostics. The technology is basedon Muon Beam Imaging (MBI), an innovative technology leveraging Laser Plasma Accelerator-based artificial muon sources, new generation particle detector systems and AI. In industry, we are working with the partners in the heavy, aerospace, and defence domains.mu-ray.tech operates at the three sites: DESY in Hamburg (hardware), Tehnopol in Tallinn (algorithms and software), and Bradfield Centre in Cambridge (algorithms, business development). Our main collaboration on the MBI technology partners are GScan in Estonia and UK, DESY in Hamburg, the University of Cambridge, and KBFI in Tallinn.

Portfolio highlights

• Monk — Monk is the leading AI-native accounts receivable for finance teams, turning collections into cash flow
• Sona — The employee 'super' app for frontline teams. Sona combines the power of modern workforce management software with an unparalleled mobile user experience.
• Werk — Werk is building a construction labor marketplace, that matches workers internationally to any country, all while automating the paperwork and HR. Our community provides trade union benefits, globally. Think of it as a mix of Deel & LinkedIn, but for construction that disrupts the European gray economy. Werk is building a digital identity forthe workers building our homes and offices.

Portfolio highlights

• Chift — Offer native integrations within your software. Your clients connect your software to their tools in one click. Connect easily to Accounting, POS, Invoicing, e-commerce, etc.
• Pandas — B2B e-commerce platform connecting Asia with the +10 million of Latin America small merchants
• Werk — Werk is building a construction labor marketplace, that matches workers internationally to any country, all while automating the paperwork and HR. Our community provides trade union benefits, globally. Think of it as a mix of Deel & LinkedIn, but for construction that disrupts the European gray economy. Werk is building a digital identity forthe workers building our homes and offices.

Portfolio highlights

• Archestra.AI — Enterprise MCP platform with security guardrails, compliance controls, and a curated catalog of 900+ evaluated Model Context Protocol servers for AI agents.
• SimpleStudy — Learn smarter with revision notes, past papers, quizzes, and expert tools for major Irish academic exams. Join SimpleStudy Ireland and boost your grades today.
• Gradient Labs — Gradient Labs builds AI agents for financial services. Automate disputes, KYC, lending, customer support, and the back-office work in between. Book a demo.

Portfolio highlights

• Remato — Remato is all-in-one & mobile-first platform to seamlessly manage projects, people and assets. Budget estimating & task planning, field communications & work tracking, real-time overview & automated reports.

Portfolio highlights

• Yaga — Yaga is designed for everyone who wants to sell items online in a convenient and secure manner.
• Yaga — Yaga is an online selling and shopping platform for new and preloved fashion. Buy preloved clothing safely or open your own shop and sell. Find unique second hand clothes, earn extra money and help save the Planet.
• Grünfin — Grünfin is a sustainable investing platform for people who care about their impact.

Portfolio highlights

• Uniify — Uniify is a no-code customer onboarding software that makes it fast, easy and secure for financial companies to onboard their customers. Save your business time and money, and build onboarding flows for your customers in minutes instead of months.
• Crisp — Crisp connects data between retailers, distributors, and brands to power real-time insights across the supply chain.
• Salesforge — Salesforge is an all-in-one sales execution super app that gives every sales team the highest probability to hit their target by tackling email deliverability and the need to personalize cold email outreach at scale.We do that by enabling real-time AI & machine learning to decision critical sales activities, enhance messaging and eliminatethe need for various sales point solutions, therefore driving superior conversion rates.

Portfolio highlights

• Remato — Remato is all-in-one & mobile-first platform to seamlessly manage projects, people and assets. Budget estimating & task planning, field communications & work tracking, real-time overview & automated reports.

Portfolio highlights

• Isembard — Faster, cheaper, greener manufacturing
• sensmore — Equip your machinery with autonomy built for the harshest conditions. Enhance safety, reduce costs, and increase efficiency with our advanced radar technology.
• Willo — Willo is advancing and scaling true wireless power for humanity, technology, and industry. Discover the company powering the next era of energy delivery.

Portfolio highlights

• Enter — baupal seeks to democratize sustainable and customized architecture, making design, energy assessments, permitting and cost evaluations more accessible and straightforward for private builders and smaller construction projects. baupal is an online building application service that takes advantage of digital processes and efficient team structuresto streamline design, planning and permitting processes for a range of small-scale projects.baupal was established in December, 2020 in Berlin, Germany.
• Faktus — Le partenaire financier de vos chantiers publics. Le financement de BFR rapide et accessible pour les entreprises du bâtiment
• CalcTree — CalcTree brings engineering teams, designs and calculations together. In traditional engineering design and construction, projects all begin with a design process. Architects, civil, mechanical, electrical and geotechnical engineers, as well as contractors and builders all work together to design structures down to the last bolt before a shoveleven touches the ground. This process is slow, expensive and a complete mess both literally and digitally. It’s rife with data fragmentation and complexity, and CalcTree is solving that.Learn about CalcTree's mission, backstory and current investors here: https://www.calctree.com/about

Portfolio highlights

• GScan — Cosmic-ray based solutions for 3D imaging. GScan redefines the boundaries of 3D scanning with Muon Flux Technology (MFT) detectors. Unparalleled quality, safety, ease-of-use. Scan anything. Detect everything.

Portfolio highlights

• GScan — Cosmic-ray based solutions for 3D imaging. GScan redefines the boundaries of 3D scanning with Muon Flux Technology (MFT) detectors. Unparalleled quality, safety, ease-of-use. Scan anything. Detect everything.

Portfolio highlights

• Vendis.ai — A CRM that actually understands you. Your intelligent AI sales companion. Conversation in, pipeline out. Zero forms.
• Baserow — Discover Baserow, the open-source no-code platform for building databases and applications. No code or technical skills needed. Start creating for free today!
• Breyta — Gather all your qualitative data and our AI assistant transcribes, analyses and delivers you accurate product insights and patterns at scale in seconds.

Portfolio highlights

• Peec AI — Peec AI helps marketing teams analyze brand performance across ChatGPT, Perplexity, and Gemini. Track visibility, benchmark competitors, and optimize AI search presence.
• XO Market — XO Market is a decentralized finance platform that enables users to create, trade, and share prediction-based markets on future events using blockchain technology. The platform operates as a non-custodial interface, allowing participants to interact directly with smart contracts while retaining control of their own crypto assets. XO Marketfacilitates “conviction markets,” where users can establish and trade outcomes on various topics, with prices reflecting collective market sentiment. It uses an automated market maker model to provide liquidity and incorporates a hybrid system combining artificial intelligence and human input to resolve market outcomes. The platform supports permissionless market creation, enabling users to define events, set parameters, and participate in trading without centralized oversight.
• Skalar — Skalar specializes in providing automated and digital tax and accounting services for companies.

Portfolio highlights

• Insly — The low-risk insurance software partner for MGAs and insurers. Fast setup, AI-powered and real results for MGAs and insurers.
• Supersimple — Supersimple helps SaaS companies use customer behavior data to drive decisions in product & sales.
• ScamGuardian.AI — ScamGuardian develops AI-powered victim simulations to capture actionable scam intelligence

Portfolio highlights

• geoSurge — Customers don't search. They ask.
• Secondmind — Helping automotive engineers design better cars, faster.
• Opensignal — Opensignal is the leading global provider of independent insights into network experience and market performance.