Empleos de back end developer en Madrid

About the Company Do you think that money can be better? Money should help lower or removeentry barriers to the market. Money should be universal. And money shouldempower your dreams. At HandCash we are creating a marketplace of apps and games where skills andgood content are rewarded, and startups make money since day one. Although our HQ is in Madrid, our...

Senior Backend Developer - Node.Js Remote | Europe A fast-growing global consumer technology company is looking for a Senior Node.Js Backend Developer to join its international engineering team. The organisation builds innovative real-time digital products used daily by millions of users worldwide. Their platform focuses on creativity, self-expression, and...

Quantion es una empresa de servicios de Transformación Digital de Negocio fundada en 2015 y parte del grupo Astek Group , que opera en más de 25 países con más de 10.000 empleados en todo el mundo. Nuestro equipo está especializado en desarrollo de aplicaciones, UX/UI y transformación digital de negocio, enfocado en construir soluciones...

Backend Developer/Integration Engineer to design, develop, and integrate secure, scalable solutions using microservices, APIs, and cloud-native architectures. Requires strong Java, Spring Boot, Kubernetes, and AWS skills.

¡Capitole sigue creciendo - y queremos que formes parte del viaje! Estamos buscando un/a Senior Back End Engineer con +5 años de experiencia para unirse a nuestro increíble equipo.Funciones:Senior Backend Engineer (Node.Js / Azure / APIs / Integración de Sistemas)Formar parte del equipo de ingeniería responsable del diseño, desarrollo y evolución del...

¡Capitole sigue creciendo - y queremos que formes parte del viaje! Estamos buscando un/a Senior Back End Engineer con +5 años de experiencia para unirse a nuestro increíble equipo.Funciones:Senior Backend Engineer (Node.Js / Azure / APIs / Integración de Sistemas)Formar parte del equipo de ingeniería responsable del diseño, desarrollo y evolución del...

El rol Serás responsable de los sistemas que hay detrás del producto: APIs, modelos de datos, procesos en segundo plano, integraciones y los flujos de datos que impulsan la activación, la retención y la monetización. La primera es la arquitectura : a nuestra escala, una frontera mal puesta o un modelo de datos que no aguanta se paga durante años, y...

El rol Serás responsable de los sistemas que hay detrás del producto: APIs, modelos de datos, procesos en segundo plano, integraciones y los flujos de datos que impulsan la activación, la retención y la monetización. La primera es la arquitectura : a nuestra escala, una frontera mal puesta o un modelo de datos que no aguanta se paga durante años, y...

A multinational technology firm based in Barcelona is seeking a Senior Back-End Developer to design and build robust backend systems. You will utilize Node.Js and TypeScript while integrating AI-driven solutions in production environments. The ideal candidate has 5–7 years of experience, excellent communication and teamwork abilities, and must be fluent in...

A global leader in FinTech is building a brand-new Engineering team and is looking for experiencedSenior Software Engineers (Backend)to join them. They’re hiring across all levels, including Senior Engineers, Staff Engineers, Principal Engineers, even Team Leads.This is an opportunity to work on deeply technical, innovative solutions as part of a...

Location: Fully remote (European Union) Engagement: Contract, ongoing (initial term to end of September ****) Start: ASAP About the role Our client, a global industrial technology company, runs a B2B e-commerce platform and smart product catalogue built on Medusa, the open-source headless commerce engine. The backend is currently delivered by an...

Location:Fully remote (European Union)Engagement:Contract, ongoing (initial term to end of September ****)Start:ASAPAbout the roleOur client, a global industrial technology company, runs a B2B e-commerce platform and smart product catalogue built on Medusa, the open-source headless commerce engine. The backend is currently delivered by an external supplier,...

Job Description Senior Backend Software Developer will part of regional/global team supporting software of Spark Aligners. We use complex software solution for aligners (invisible braces) that supports the process from order, design to manufacturing. This role will support web based backend development. Working in distributed international cross functional...

About The Role What if the code you write could directly power the AI systems shaping how millions of people interact with technology? We're looking for Back End Developers in Madrid to design, build, and optimize the server-side systems and APIs that drive cutting‑edge AI products — from data pipelines and model‑serving infrastructure to scalable...

Citibeats in Barcelona is looking for an experienced Backend Software Engineer to join their fast-growing team. The role involves developing new features, API endpoints, and maintaining the AI & NLP platform. Ideal candidates should have at least 3 years of experience in Python, preferably with Django, and be fluent in both Spanish and English.Citibeats...

Remote in Europe · Full-time · €65,000–€90,000 gross annuallyABOUT GATHER HEALTH Gather Health is a Boston-area primary care practice serving adults 65 and older, many of whom face barriers to accessing care and support. Catching problems early and preventing avoidable hospital stays are central to how we operate, and we build technology that gives...

Senior Backend Developer needed to improve a PHP API for a B2C HealthTech app, handling millions of requests and migrating to Go. Requires 4+ years experience.

Are you an Expert Java Backend Engineer seeking a new interesting challenge? If your answer is yes, it’s your lucky day so keep reading — it can be just what you're looking for! We are looking for a dynamic, proactive and talented person to join our team and perform the following tasks: Design, develop, and deliver high-quality, scalable and secure...

We're a fast-growing startup building a recruitment platform. Our product helps recruiters spend less time on manual work, using LLMs to automate screening, scoring and the workflows around them.What you'll doYou'll own features end to end - from API design and data models to the event-driven pipelines that support recruiters.Build and maintain Python...

Fully remote (European Union) Contract, ongoing (initial term to end of September ****) ASAP Our client, a global industrial technology company, runs a B2B e-commerce platform and smart product catalogue built on Medusa, the open-source headless commerce engine. The backend is currently delivered by an external supplier, and the client is now building...