backend engineer nodejs

Who We AreAt Balance (findbalance.app), we're building the clinical operating system for obesity treatment — combining medical rigor, AI intelligence, and multidisciplinary care teams to deliver personalized treatment at scale.In Spain alone, 200,000 people on GLP-1 medications today will grow to 1.2 million by 2030, most without access to proper clinical...

Who We AreAt Balance (findbalance.app), we're building the clinical operating system for obesity treatment — combining medical rigor, AI intelligence, and multidisciplinary care teams to deliver personalized treatment at scale. In Spain alone, 200,000 people on GLP-1 medications today will grow to 1.2 million by 2030, most without access to proper...

The Role We are looking for a Backend Engineer to join a small, high-ownership engineering team working on new product initiatives. You will be primarily focused on new product initiatives, building new services and features, though you may occasionally need to navigate existing codebases. You use AI coding tools as a core part of how you work, and you are...

About the OpportunityYou will work in the Incentives team within the Grow & Engage domain. This is the heart of the customer experience ranging from the acquisition and signup to our premium membership tiers and the daily engagement of our users. You will work in teams delivering the newest and most innovative features serving our customers in the best way...

POWER A WORLD OF TRUSTIncode is the leading provider of world‑class identity solutions that is reinventing the way humans authenticate and verify their identities online to power a world of digital trust.Through our revolutionary identity solutions, we are unleashing the business potential of universal industries including finance, government, retail,...

Location: Come and join us in Barcelona!We are looking for a talented and motivated Backend Engineer (m/f/d) for our Driver Engagement Team.As part of a highly skilled, cross-functional team comprising Mobile Engineers, Backend Engineers, a Product Manager, a Product Designer, a Data Analyst, and an Engineering Manager, you will help shape the future of...

Quiénes somosEn Tessera acompañamos a compañías en su crecimiento desde una visión integral de personas, negocio y estructura. Trabajamos como partners en la construcción de equipos y en la toma de decisiones importantes, combinando talento y estrategia para profesionalizar procesos críticos allí donde más impacto se genera. Quiénes somosEn Tessera...

Flanks is looking for aBackend Engineerto design and maintain the data pipelines and backend services powering their Open Wealth Platform.Health insurance, 50% subsidised digital canteen, yearly training budget, birthday day offA little bit about Flanks Flanks is shaking up the wealth management industry by making it simpler and way more efficient for...

REVER is a Barcelona based startup backed by Y‑Combinator. REVER's mission is very ambitious: change the way people buy by giving superpowers to shoppers. We are now obsessed on drastically improving the return experience both for the shopper and the e‑commerce.The challenge is massive: we want to change a $2.5 Trillion industry. For that we have a lot...

Marosa is a leading FinTech company based in Vigo, specialising in tax technology. Our mission is to simplify global VAT compliance for multinational companies through powerful and user-centric software.We are looking for a Backend Engineer to join our growing engineering team. You will contribute to building and maintaining the backend systems that power...

Flanks is looking for a Backend Engineer to design and maintain the data pipelines and backend services powering their Open Wealth Platform. Health insurance, 50% subsidised digital canteen, yearly training budget, birthday day off A little bit about Flanks Flanks is shaking up the wealth management industry by making it simpler and way more efficient for...

Buscamos un/a Senior Backend Engineer con sólida experiencia en Java, Spring Boot y arquitecturas modernas para incorporarse a un proyecto tecnológico de alto impacto.Requisitos imprescindibles:Experiencia senior en Java / Spring Boot y arquitecturas distribuidas.Experiencia con microservicios y APIs REST.Experiencia real y demostrable en integración de...

Buscamos un/a Senior Backend Engineer con sólida experiencia en Java, Spring Boot y arquitecturas modernas para incorporarse a un proyecto tecnológico de alto impacto.Requisitos imprescindibles:Experiencia senior en Java / Spring Boot y arquitecturas distribuidas.Experiencia con microservicios y APIs REST.Experiencia real y demostrable en integración de...

Te consideras una persona curiosa, con iniciativa y capacidad para adaptarse a un entorno tecnológico en constante evolución? ¿Te gusta colaborar con otros equipos, compartir conocimiento y contribuir a simplificar lo complejo? ¿Te atraen los retos técnicos y la búsqueda constante de soluciones innovadoras apoyadas en nuevas tecnologías? ¿Buscas...

Te consideras una persona curiosa, con iniciativa y capacidad para adaptarse a un entorno tecnológico en constante evolución? ¿Te gusta colaborar con otros equipos, compartir conocimiento y contribuir a simplificar lo complejo? ¿Te atraen los retos técnicos y la búsqueda constante de soluciones innovadoras apoyadas en nuevas tecnologías? ¿Buscas...

Te consideras una persona curiosa, con iniciativa y capacidad para adaptarse a un entorno tecnológico en constante evolución? ¿Te gusta colaborar con otros equipos, compartir conocimiento y contribuir a simplificar lo complejo? ¿Te atraen los retos técnicos y la búsqueda constante de soluciones innovadoras apoyadas en nuevas tecnologías? ¿Buscas...

POWER A WORLD OF TRUST Incode is the leading provider of world‑class identity solutions that is reinventing the way humans authenticate and verify their identities online to power a world of digital trust. Through our revolutionary identity solutions, we are unleashing the business potential of universal industries including finance, government, retail,...

Flanks is looking for a Backend Engineer to design and maintain the data pipelines and backend services powering their Open Wealth Platform.€35,000 - €50,000 gross/yearBarcelona (Hybrid, office near Sants Estació / Plaça Espanya)Health insurance, 50% subsidised digital canteen, yearly training budget, birthday day offA little bit about FlanksFlanks is...

Build the infrastructure that moves money. Ledgers, payment integrations, and APIs that power fintech businesses. About the roleWe're building the platform that lets anyone launch a fintech business. That means reliable ledgers, integrations with stablecoin infrastructure (USDC, Bridge), and APIs developers love to use. What you'll doDesign and build backend...

Backend Engineer – AI Integrations Location: Madrid, Spain 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...