Top Tech Startups in Eastern Europe in 2027

Blockstream is the leading Bitcoin company, providing cutting-edge infrastructure solutions for enterprises, institutions, and individual Bitcoin users. We develop industry-leading Bitcoin self-custody solutions, Bitcoin-based financial products, second-layer scaling technologies, and enterprise-grade blockchain infrastructure. OUR PRODUCTS: - The Liquid Network: sidechain-based settlement network for traders and exchanges - Blockstream App: A multi-platform, feature-rich Bitcoin and Liquid Wallet - Blockstream Jade: A fully-open source hardware wallet for Bitcoin and Liquid - Blockstream Enterprise: Enterprise-grade custody and treasury management tool - Blockstream Satellite: the Bitcoin blockchain beamed from space - Many major contributions to Bitcoin open source software and research

Who we are? KITRUM is a one-stop custom software development company headquartered in sunny Florida with development centers in Ukraine, Kazakhstan, Israel, and Poland. With a pool of 300+ top-notch engineering resources, we help CxOs of VC-backed startups and fast-growing tech companies in the US, EU and Australia to custom build software engineering teams packed with top-tier talent. We realize that one of the most crucial things for developers — adequate client and fascinating projects. So we qualify our clients to make sure that they: — have an idea that they believe will make the world a better place; — think long-term and looking for a trusted-tech partner; — want to rely on and avoid micromanaging; — are not f$%$ing jackasses :-) Follow our team on Instagram to know more about our daily life instagram.com/kitrum.team :) We adore making new friends on the board!

At pubGENIUS we build software that helps great ideas become real products. We’re a US-based development company founded by a former Microsoft engineer, and we’ve been remote since day one. Our team is fully distributed across 10 countries from the U.S. to Europe, Asia, and Africa and we believe that where you live should never limit where you can build. What sets us apart? Our standards: -We value deep knowledge, strong engineering skills, and clear communication. Our hiring process is intentionally tough we select just 1 out of every 1,200 applicants to make sure we build a team that can consistently deliver great work, fast. What unites us is our passion for technology, our love for clean code, and our commitment to helping startups bring their visions to life. Since 2018, we’ve worked on 80+ projects, supported founders from day zero, and helped raise over $15 million in funding for early-stage startups. Whether you’re building your MVP or scaling your product, we’re here to make it happen with speed, quality, and the care of a real partner. What We Do: - We have a solid and proven track record building: - Web applications:SaaS platforms, e-commerce, healthcare, fintech, e-learning, CRMs, and more. - Mobile apps: high-performing apps on iOS and Android using React Native (plus native integrations). - Fractional CTO: Strategic support to help you choose the right tech stack, set up scalable architecture, and move faster without hiring full-time. Who We Work With: Whether you're in healthcare, e-commerce, education, AI, fintech, or something entirely new, our sharp-minded engineers can tackle any complexity. We don’t limit ourselves by industry we’re here to solve real problems with clean, scalable code. How We Think: We’re trying staying ahead. Every decision we make from architecture to stack selection is designed to ensure that the products we build will stand the test of time and evolve with your business.

At Atlys, we believe that the path to creating a more open world is by making it efficient to travel. Travelers cite visas as the most frustrating pain point, and we're starting by automating that completely. We're looking for talented people who are interested in building the future of travel alongside us. Building technology to increase global movement liquidity will be one of the most exciting developments in decades.

The HYPR Cloud Platform makes it easy to eliminate passwords and deliver lightning-fast login experiences that users love. With HYPR, businesses are finally able to stop phishing, reduce fraud, and enable unrivaled security for employees and customers across the globe. Welcome to The Passwordless Company® The HYPR Cloud Platform makes it easy to go Passwordless across the enterprise by combining the security of a smart card with the convenience of a smartphone. With HYPR, businesses are finally able to solve the desktop MFA gap, eliminate customer passwords, and deliver lightning-fast login experiences their users love. #EliminateTheTarget at HYPR.com

Braze is the leading customer engagement platform that empowers brands to Be Absolutely Engaging™. Braze helps brands deliver great customer experiences that drive value both for consumers and for their businesses. Built on a foundation of composable intelligence, BrazeAI™ allows marketers to combine and activate AI agents, models, and features at every touchpoint throughout the Braze Customer Engagement Platform for smarter, faster, and more meaningful customer engagement. From cross-channel messaging and journey orchestration to Al-powered decisioning and optimization, Braze enables companies to turn action into interaction through autonomous, 1:1 personalized experiences. The company has been consistently recognized as a Leader in marketing technology by industry analysts, and was named a G2 “Best of Marketing and Digital Advertising Software Product” in 2026. Braze was also named a 2026 Best Places to Work by Built In, a 2025 America’s Greenest Companies by Newsweek, and a 2025 Fortune Best Workplace in Technology™ by Great Place To Work®. The company is headquartered in New York with 15 offices across the Americas, EMEA, and APAC. Learn more at braze.com.

ServiceTitan is a mobile, cloud-based software platform that helps home services companies streamline operations, improve customer service, and increase sales. ServiceTitan's end-to-end solution for the multi-billion dollar residential home services industry includes CRM, intelligent dispatch, custom reporting, marketing automation, a mobile solution for field techs, and accounting integrations with Sage Intacct and QuickBooks. ServiceTitan brings a fully operational modern SaaS infrastructure to an industry traditionally underserved by software. ServiceTitan is the preferred software for the world's most successful plumbing, HVAC, and electrical companies. ServiceTitan currently has more than 2,500 customers and more than 600 employees across Glendale and Atlanta. For more information about ServiceTitan, visit servicetitan.com Interested in becoming a Titan? Visit: servicetitan.com/careers

Speechmatics are global experts in deep learning and speech recognition, providing technology that understands every voice. We have built the most accurate and inclusive speech-to-text engine available, which is now working with an amazing mix of global companies. We are VC backed, in the final stages of growth fundraising. Joining us means working with some of the smartest minds around the world, focused on cutting-edge projects and deploying the latest techniques to disrupt the market. We believe in putting people first; we’ll do all we can to help you develop your skills and give you the tools you need to thrive. We support people to work wherever they work best and also understand the importance of coming together to collaborate, socialise and build relationships. This is only the beginning; we’re looking for amazing people like you to continue our journey…

SimilarWeb is the pioneer of digital market intelligence, and the standard for understanding the digital world. Our platform provides customers with granular insights about every website and mobile app enabling visibility into digital behavior and letting businesses see what is actually happening with their competitors, their industry and throughout the digital world. We have thousands of paying customers worldwide and millions of users using our free platform every month. Our customers are some of the largest global brands in the world and including Walmart, AirBnb, adidas, DHL and eBay. SimilarWeb raised over $112 million and has over 400 employees in 8 offices around the world in NY, SF, London, Tel Aviv, Tokyo, Kiev, Paris, San Paulo. With the insights and the data we provide businesses, agencies, marketers and analysts can benchmark performance against competitors, reveal competitors online strategy, discover new opportunities, identify emerging trends and understand consumer

Glovo is a mobile application operating in Spain since March 2015 that allows customers to outsource their daily errands to one of our delivery people in order to make life less cumbersome. Users can send or obtain any product in less than 60 minutes. The app connects users with independent couriers called glovers that acquire products from any restaurant, laundry or store in the city and also deliver urgent packages. In other words, Glovo is the new personal assistant available to everyone! Once the order is made, the user can interact with the glover assigned and follow his GPS position in real time. We developed a payment system that is easy and convenient – the client simply enters his credit card details when registering for the app and only gets charged once the product arrives at his doorsteps. In less than 8 months, we have launched in three Spanish cities and are already planning our international expansion. Get to know more about us at glovoapp.com