Founding Senior Backend Engineer

Archteam is seeking a founding engineer to join the CTO and CEO, owning large parts of the backend, our agent infrastructure, and the data layer. You will ship to customers from day one and help define the architecture and product direction.You will work on Postgres-backed services, autonomous agent systems, and data pipelines that feed signals and customer...

Founding Senior Frontend Engineer Ubicación: Madrid (Modelo presencial preferente con alta flexibilidad a negociar) Compensación: 70.000 EUR - 90.000 EUR brutos anuales + Equity fundacional significativo + Beneficios Sobre NAIIAN y el reto NAIIAN es una startup Deep Tech europea, con financiación sólida y equipo fundador en Madrid. Construimos una...

Backend Engineer – AI Integrations Location: Remote (Madrid Hybrid)Department: Engineering About Vic.Ai Vic.Ai is building the future of autonomous accounting using AI. We help finance teams eliminate manual invoice processing and unlock real-time financial intelligence by combining advanced machine learning, OCR, and scalable backend systems. Our platform...

Join one of Southern Europe’s fastest-growing startupsEnginy is a Barcelona-based startup and one of Southern Europe’s fastest-growing companies ranked #3 in the Sifted 100: Southern Europe 2026, and we’re just getting started.We’re building the AI-native GTM platform for modern B2B teams, combining prospecting, enrichment, intent signals, AI...

Bunch is building the backbone of private markets. We are enabling next-gen fund operations with one integrated system that combines secure data infrastructure, AI-powered workflows and expert fund services. If you value ownership, growth through real responsibility, and working with a thoughtful, ambitious team, this role might be for you.Your RoleYou will...

Join one of Southern Europe's fastest-growing startupsEnginy is a Barcelona-based startup and one of Southern Europe's fastest-growing companies ranked #3 in the Sifted 100: Southern Europe 2026, and we're just getting started.We're building the AI-native GTM platform for modern B2B teams, combining prospecting, enrichment, intent signals, AI research and...

As a Senior Backend Engineer at Playtomic, you will be responsible for developing robust and scalable solutions for our product, ensuring high performance, consistent and secure transactions. In Playtomic we operate in pods. A pod is a small, cross-functional team that owns a domain end-to-end: it takes a framed problem, makes the key product/technical...

ResponsibilitiesAs a Senior Backend Stack Engineer in the Core Platform Team, you’ll be a principal owner of the TMS (Translation Management System) Platform and connected services.Drive the architecture, reliability, and evolution of services covering translation workflow orchestration, vendor management, customer management, and integrations with our...

At OneSpan, we specialize in digital identity and anti-fraud solutions that create exceptional and secure experiences.We are looking for an experienced Senior Backend Engineer to join our Barcelona-based backend team and drive product features from conception to production with customer value at the forefront.Es posible que un gran número de candidatos se...