Top Tech Startups in Spain in 2027

CallMerlin is a live B2B AI coworker for companies that already run on CRM, Slack/Teams, email, calendar and accounting. We give teams voice and chat access to those systems, with PIN permissions and human approval before important writes. EU-hosted. The product ships. What's missing is a commercial co-founder who owns pipeline, MSP partner channel and direct deals, and turns shipping into revenue.

Software and payment rails transformed B2C commerce. B2B remains largely unsolved as transactions require manual coordination among multiple departments on both sides of the transaction, and the finance layer is left as an afterthought. This creates inefficiencies and missed opportunities on a market that is 2x the size of B2C in global spend. Nanzen is building the AI operating system for B2B finance ops. Nanzen will bridge the critical context gap between buyers, suppliers and payment rails, that lets AI Agents automate and optimize billing, treasury, relationship management and payments

Michele "Mike" Cimmino began working as a freelance software engineer in 2010. He turned it into a small business a few years later. In 2015, Mike registered Lasting Dynamics as an SRL in Italy. This is a software house. Our company helps partners develop and maintain successful digital products across devices. We aim for long-term partnerships. Potential partners can join our waiting list. The main services of Lasting Dynamics are: - Custom Software Development - Development Team Augmentation - Software Quality Assurance - Recruiting & Training The teams of Lasting Dynamics can work on any digital project, in any industry, for any timezone. We are senior full-stack software engineers, UI/UX experts, and talented product owners. In Agile teams, we develop web and mobile applications for entrepreneurs worldwide. Each Agile team quickly becomes a solid tech partner, providing turnkey solutions. The quality and transparency of our work distinguishes it. With our workflow management system, Roundrush, we share full visibility of daily tasks. Every client and partner can watch progress in real-time. Learn more at lastingdynamics.com Employee testimonials: "I love innovation and doing quality-oriented work – this is something in which Lasting Dynamics never misses and it’s very hard to find in other software houses out there." - Software Engineer "What I truly like about Lasting Dynamics is the multicultural environment I get to be a part of. I'm lucky to have the chance to work with many different people from different cultures, and thanks to this, to build new friendships too." - Software Engineer "I like working at Lasting Dynamics because I get to work on multiple projects simultaneously, with direct feedback from developers and true Agile values. As a designer, it provides me with a rich experience." - UI/UX Designer

RZLT is the leading Web3, Crypto & AI Native Marketing Agency. We grow the most disruptive brands in the world. We are a diverse team of 35+ innovators from 10 different countries, speaking 8 languages, united by an unstoppable drive for passion, and disruption. If you're eager to dive into the Web3 landscape and thrive, RZLT is the place for you. Join us and be a part of shaping the future of marketing. Check our job openings here: careers-page.com/rzlt-2?mode=preview

Wagmi is building the next generation of infrastructure companies to drive blockchain adoption. We bring together visionary ideas, exceptional talent, and investment capital to build world-changing companies.

AdStart Media (adstartmedia.com) is a technology-driven company active in digital advertising and mobile payments, well-established and rapidly expanding globally. As a global organization, we take pride in our partnerships with renowned international brands, esteemed publishing houses, media buyers, and innovative app developers. Our culture is characterized by youthfulness, a spirit of collaboration, and a vibrant social atmosphere. At our core, we embody a performance-driven ethos, firmly believing that meaningful connections are the catalysts for growth. We highly value diverse perspectives and opinions, as they play a pivotal role in making a substantial impact during our rapid expansion phase.

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