Empleos de web3 fullstack engineer en Barcelona

 (English version at the end.)Senior Fullstack Engineer – HealthTech | Internacional, Remoto | Impacto real y crecimiento acompañado¿Quieres evolucionar como profesional, seguir desarrollándote y no sólo cambiar otra vez de empresa?¿Buscas un entorno donde tener impacto y ownership, además de coaching y mentoring, para convertirte en la versión...

Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact.With the right people and...

We Make Voice AI Work. We ship production-ready agents that automate real sales and operations.Flyboard.ai builds and operates custom AI voice agents that automate high-volume, repeatable workflows across commercial and operational processes. Our customers include fast-moving SMEs, corporates, and mid-market leaders across Europe and LatAm. We are...

Schwarz Digits creates the technological foundation for digital sovereignty in Europe. As the IT and digital division of the Schwarz Group, we develop and manage the IT infrastructures for the retail divisions Lidl and Kaufland, as well as Schwarz Production and PreZero. At the same time, we operate as an independent provider in the external market to...

Schwarz Digits creates the technological foundation for digital sovereignty in Europe. As the IT and digital division of the Schwarz Group, we develop and manage the IT infrastructures for the retail divisions Lidl and Kaufland, as well as Schwarz Production and PreZero. At the same time, we operate as an independent provider in the external market to...

Overview As a Fullstack Engineer in the Platform team, you will own shared infrastructure, shape the backend orchestration service, and help multiple teams move faster with quality and reliability. You’ll bridge product teams as a platform proxy, coordinating cross-team decisions and ensuring scalable, well-documented services. You will build and maintain...

Schwarz Digits, the IT and digital division of Schwarz Group, builds and maintains cloud, security, data & AI, and collaboration platforms for Lidl, Kaufland, Schwarz Production and PreZero across Europe. This role focuses on modern engineering practices, scalable backend and frontend systems, and developer-enabling architecture.You will work at the...

Schwarz Digits creates the technological foundation for digital sovereignty in Europe. As the IT and digital division of the Schwarz Group, we develop and manage the IT infrastructures for the retail divisions Lidl and Kaufland, as well as Schwarz Production and PreZero. At the same time, we operate as an independent provider in the external market to...

🚀 **¿Fullstack, Platform Engineering, Cloud y Developer Experience en una misma posición?** Desde **Q-tech** estamos colaborando con una gran compañía tecnológica internacional para incorporar un/a **Platform Fullstack Engineer** a su hub tecnológico de **Barcelona** . Pero ojo: no buscamos simplemente a alguien que haga frontend + backend. 👉...

The difference between an AI Engineer and what we are looking for is straightforward: you have shipped a multi-agent system in production, you have owned the eval harness, and you know what happens when your agent fails at 2am because you have lived it. As an AI Engineer (Agentic/Applied), you will design, build, and deploy production-grade agentic AI...

The employer offers crypto accounts for players in the gaming industry acting as a wallet-as-a-service solution supporting multi-chain accounts, gas sponsorship, pop-upless blockchain interactions, and flexible ownership. Theis solution enables games to interact with on-chain assets easily and programmably, allowing for faster launches, adaptability as...

**About Codeway** Codeway builds category-leading consumer AI apps on mobile and web, at global scale. 600M+ downloads. 60+ apps. 400+ builders across Barcelona and İstanbul. Completely bootstrapped. No board. Profitable since year two. Small teams move faster than big ones. But they need big resources to win at scale. Nobody starts from zero....

Barcelona Supercomputing Center (BSC-CNS) is seeking a Mid-Level Full Stack WEB Developer (.NET) to maintain and enhance an internal time-tracking and reporting platform. You will work in a dynamic environment within the Management Department, contributing to architecture decisions and code quality. The role requires 2-4 years of C#/.NET Core, EF, SQL...

Decentralized Masters is looking for a security-focused software engineer to own the security posture of their platform managing significant digital assets. The ideal candidate will have extensive experience in security and quality assurance, with a strong background in fullstack development and cloud infrastructure like AWS. The role offers competitive...

This job is with Allianz Commercial, an inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. At Allianz Technology, we are shaping the future of digital solutions through innovation, collaboration, and AI-driven development. We are looking for an Expert Full Stack Developer who is passionate about...

Your Tasks We're looking for an experienced Fullstack Engineer to join our Platform team; a small, high-impact team that boosts the effectiveness of three teams building our store experiences. You'll be embedded in the centre of how we build and run software: owning shared infrastructure, shaping our backend orchestration service, and helping different...

Talanto in Barcelona is seeking a Senior Software Engineer - Data to join our fast-growing engineering team. You’ll build customer-facing portals and backend services that power subscriptions, billing, and usage insights, with a strong focus on reliability and performance.You’ll work with Ruby on Rails and React, own features end-to-end, and collaborate...

Fullstack Developer Senior (.NET+React)Referencia: #103025Localización: BarcelonaNuestro cliente es una compañia multinacional del sector aseguradorBuscamos un/a Fullstack Developer Senior con más de 5 años de experiencia para unirse a nuestro equipo de desarrollo. NET (C#) para el backend y de React.js para el frontend.Serás responsable de diseñar,...

Wizeline, a global AI-native technology solutions provider, develops AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerating market entry and driving business transformation. As a global community of innovators, we foster a culture of growth, collaboration, and impact.With the right people and the right ideas,...

About our client Our client builds a leading digital identity and fraud prevention platform used by banks, fintech companies, online marketplaces, and other regulated businesses worldwide. Their products combine biometric identity verification, document and image processing, and advanced fraud detection to help customers balance frictionless digital...