Top Tech Startups in Europe in 2027

What are we all about? We are a team of world-class builders and researchers with expertise across several domains: Ethereum Protocol Engineering, Layer-2, Decentralized Finance (DeFi), Miner Extractable Value (MEV), Smart Contract Development, Security Auditing, and Formal Verification. Working to solve some of the most challenging problems in the blockchain space, we frequently collaborate with renowned companies, such as Ethereum Foundation, StarkWare, Flashbots, xDai, Open Zeppelin, Forta Protocol, Energy Web, POA Network, and many more. We actively contribute to Ethereum core development, EIP's and network upgrades together with the Ethereum Foundation, and other client teams. Today, there are 100+ of us distributed across the world. You can view all our open positions here: jobs.nethermind.io

Tomplay reinvents sheet music, for an interactive and immersive playing experience. Tomplay interactive sheet music allows all musicians to play along with classical, pop, rock, folk, jazz, film and world music scores accompanied by real recordings from professional musicians. Thanks to unique technology, the interactive scores scroll automatically on-screen, creating an immersive, concert hall experience. With features such as controlling the speed of the score’s recording, looping selected passages and self-recording, Tomplay makes learning music simpler, more effective and more fun. Tomplay app is used by more than 500,000 musicians worldwide and has won numerous awards. More information on tomplay.com and in this video: youtube.com/watch?v=pqgZLKMPlr8

XR Solutions is redefining the future of industrial innovation. We harness the combined power of machine learning and augmented reality to transform how machines are operated, maintained, and optimized — unlocking efficiencies and possibilities once thought impossible. Our technology integrates research-driven optimization with real-time AR interaction, enabling industries to work smarter, safer, and faster. From streamlining machine operations to enabling breakthrough maintenance strategies, we deliver practical, reliable, and high-performance solutions that set new standards for productivity. At XR Solutions, we don’t just enhance workflows — we reimagine them.

At Deep Neuron Lab we develop products that free people from tedious processes and help companies focus on their core business. Many work processes today are still tied to unnecessary time and effort. We simplify these processes with artificial intelligence (AI). To achieve that we use the latest methods of Natural Language Processing (NLP) and image recognition to structure data and enable easier access to information. As experts in AI, we provide our clients with access to the latest technology.

Your idea deserves a shot! We will help you realize the project you have had in mind all this time. Without hurting your pocket.