Backend Engineer Jobs in Barcelona

We are on the lookout for talented Junior Backend Engineer to join our 2026 Tech Grad Program on our journey to always deliver amazing experiences. Our Tech Grad Program offers you a unique environment for you to learn and develop your skills and to contribute to the development of our cutting-edge...

JOB DESCRIPTION:SeniorSoftwareEngineer(Backend)ABOUT LINGOLingo is building acuttingedgedigital health platform that fuses continuous biosensor datahighperformancebackend engineering and advanced analytics to help people live healthier longer fuller lives. Our systems process massive volumes ofrea...

JOB DESCRIPTION:iOS EngineerABOUT LINGOLingo is building acuttingedgedigital health platform that fuses continuous biosensor datahighperformancebackend engineering and advanced analytics to help people live healthier longer fuller lives. Our iOS app is a critical part of that experienceconnecting...

About Loyal Guru La plataforma de Loyal Guru resuelve los desafíos únicos del negocio retail a través de iniciativas de loyalty de próxima generación ofertas personalizadas a escala analítica avanzada de retail y nuevas oportunidades de monetización. Nuestra solución simplifica las complejidades qu...

Your missionJoin the Revolution in Hospitality Tech!As a Senior Backend Engineerat Bookboost youll be responsible for designing developing and maintaining the server-side logic that powers our applications. Youll work closely with front-end engineers product managers and other stakeholders to delive...

Syntax is a leading Managed Cloud Provider for Mission Critical Enterprise Applications and has been providing comprehensive technology solutions to businesses of all sizes since 1972. Syntax has undisputed strength to implement and manage ERP deployments (Oracle SAP) in a secure and resilient priva...

Were on a mission to make money work for everyone.Were waving goodbye to the complicated and confusing ways of traditional banking.After starting as a prepaid card our product offering has grown a lot in the last 10 years in the UK. As well aspersonal and business bank accounts we offer joint accou...

Senior Java DeveloperWe are: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...

Were on a mission to make money work for everyone.Were waving goodbye to the complicated and confusing ways of traditional banking.After starting as a prepaid card our product offering has grown a lot in the last 10 years in the UK. As well aspersonal and business bank accounts we offer joint accou...

Were on a mission to make money work for everyone.Were waving goodbye to the complicated and confusing ways of traditional banking.After starting as a prepaid card our product offering has grown a lot in the last 10 years in the UK. As well aspersonal and business bank accounts we offer joint accou...

We are looking for a Senior Backend Engineer with a strong GenAI background to join our team and work 100% dedicated on a strategic project for one of our top clients in the pharmaceutical sector.In this role you will design and build advanced backend and AI-driven systems contributing to the evolut...

Your Tasks Within our Corporate Services platform and the Enterprise Services value stream you will work in the agile product team Finance Analytics Backend. The product team is the central point of contact for the planning development and operation of data models for the whole finance organization....

Why join The papernest Internship ProgramAt papernest interns are not observers; they are contributors & we have extensive experience of successfully mentoring interns across our international offices for over 10 years.This means working within a mature infrastructure while maintaining the agility o...

Job Description:Summer 2026 Internship Backend Search Engineering InternApplication Deadline: February 27 2026We encourage you to submit your application as early as possible as internship applications are reviewed on a rolling basis.Internship Dates: June 8 2026 August 14 2026(You must be availab...

We are Merlin Digital Partner! A leading IT and digital headhunting company who stands out from the crowd boasting over a decade of experience.Weve successfully collaborated and played a pivotal role in the growth of industry heavyweights such as Wallapop Glovo Banc Sabadell and Factorial among othe...

About AiraloAlo! Airalo is the worlds first eSIM store that helps people connect in over 200 countries and regions across the globe. We are building the next digital service that revolutionizes the telecom industry. We are a travel-tech company and an equal-opportunity environment that values and ex...

About AiraloAlo! Airalo is the worlds first eSIM store that helps people connect in over 200 countries and regions across the globe. We are building the next digital service that revolutionizes the telecom industry. We are a travel-tech company and an equal-opportunity environment that values and ex...

Job descriptionAbout Qualifyze Founded in 2019 Qualifyze is a leading company in supply chain compliance management in the Life Sciences industry trusted by over 1500 pharmaceutical and healthcare companies globally. Our digital suite of solutions connects manufacturers suppliers and a global networ...

About the team and your mission: In this role you will help us move towards our vision: patients have easy universal access to their health data through an insights-driven experience that helps them live healthier longer lives. As a Backend Engineer on our Health Profile team you will work on distri...

Description Senior Backend Engineer (LLM / AI Experience)Hybrid Tech Team Full-time Barcelona SpainIn a few wordsBuild and scale backend systems powering conversational AI & digital humansHands-on senior role balancing architecture production codeWork deeply with LLMs RAG pipelines and real-time...