Empleos de programista backend developer en Zaragoza

Jobgether is seeking a Senior Backend Developer to join a remote-first, international team.You will design and optimize backend services with Java and Spring Boot, implement REST APIs, and work across distributed systems with a focus on reliability and scalability.You will apply LLM-based capabilities, RAG pipelines, and agent-tool orchestration to enhance...

Designs, develops, and scales high-traffic backend services and APIs, builds developer tools, collaborates with customers, optimizes performance, and contributes to technical roadmap and open-source projects. Mentors teammates and supports incident response.

About the Role We're looking for a Senior Backend Developer who thrives in a deeply hand-on environment and enjoys being close to the code on a daily basis.This role is heavily focused on building, optimising, and scaling backend services in a high-load system where performance and reliability are critical.You'll be working on complex, real-time challenges...

????????Preply creates human-led, technology-enabled learning experiences that connect learners with tutors and support personalized learning journeys. Its platform serves 100,000+ tutors teaching more than 90 languages to learners in 180 countries.??????Build and improve CI/CD systems, testing capabilities, and paved paths so engineers can ship quickly and...

Jobgether is seeking a Python Developer based in Spain for a fully remote role focused on building scalable backend and frontend services with secure REST APIs for

¡Lidera proyectos como Senior PHP / Drupal Developer en Apiux España (Remoto)!Somos una empresa tecnológica especializada en apoyar a organizaciones de todas las industrias en su proceso de Transformación Digital.Estamos presentes en Chile, Perú, Colombia, EE. UU, España y seguimos en constante expansión.Experiencia: A partir de 5 años (Perfil...

SplitMetrics is a global software company offering an ecosystem of products and services that serve as a growth engine for top mobile-first businesses worldwide. Our ecosystem includes:Why SplitMetrics? SplitMetrics Acquire, a platform for automating and optimizing Apple Ads.SplitMetrics Agency, a full-service mobile marketing agency staffed by top...

Miratech in Spain is seeking a Senior Java Developer to contribute to development and maintenance of a tax administration system for a large European client.You will work on backend components using Java, Spring, and Quarkus within a microservices architecture.Candidates should have 6+ years of Java experience, strong knowledge of REST/SOAP, Kafka,...

Onyx Conseil is seeking a Senior Full Stack Developer to join its globally distributed engineering team in a fully remote role.You will design, develop, and deploy scalable web applications across the entire technology stack, collaborating with product managers and designers to deliver exceptional user experiences.Ideal candidates have 5+ years of...

OUR HIRING PROCESS:We will review your application against our job requirements. We do not employ machine learning technologies during this phase as we believe every human deserves attention from another human. We do not think machines can evaluate your application quite like our seasoned recruiting professionals—every person is unique. We promise to give...

Omega CRM is a Merkle & Dentsu company, leader in development of Customer Experience services, with +20 years of experience in the use of Technology applied to Marketing and providing a unique Customer Relationship with mainly focus on Innovation is looking for a AI / Cloud Full Stack Developer.We are building artificial intelligence solutions for...

¿Quieres formar parte de nuestro equipo de Profile?Desde Profile nos encontramos en búsqueda de un/a Senior Fullstack Developer para integrarse en un proyecto 100% remoto.Con ilusión es como se cambian las cosas, y queremos contribuir a un futuro mejor gracias a la tecnología.Para conseguirlo no necesitamos héroes ni súper talentos, sino personas...

En SQUAD Technology Solutions, empresa especializada en outsourcing IT, y estamos construyendo un equipo pequeño, ágil y con muchas ganas de hacer las cosas bien desde el principio.Estamos trabajando para uno de nuestros clientes en la incorporación de un profesional FREELANCE para asignación completa como Senior Developer java con experiencia en kafka y...

Our partner is looking for a Senior Backend Developer (Java/Spring Boot, Agentic LLMs) based in Spain. As a Senior Backend Developer, you will contribute to building and enhancing a high-performance technology platform serving the global business aviation industry. You will develop robust backend services and scalable applications using Java and Spring...

Java SW developer (h/m) Diseñar y desarrollar aplicaciones backend en Java 25 / Spring Boot, con criterio de arquitectura propio. Participar en decisiones de diseño: microservicios frente a monolito modular, arquitectura hexagonal/clean, APIs GraphQL frente a REST. Investigar y solucionar los informes de error asignados. Proporcionar revisiones...

This position is listed on behalf of a partner company, who manages all applications and next steps.Our partner is looking for a Senior Fullstack Developer (m/w/d) - Claude Code Expert based in Spain.We are looking for an experienced Senior Fullstack Developer with strong expertise in AI-assisted software development, particularly Claude Code, to support the...

Our partner is looking for a Backend Engineer (Python) based in Spain. As a Backend Engineer, you will help develop and scale an AI-powered voice platform designed to improve healthcare access and support for adults aged 65 and older. You will build the Python services and backend workflows that enable intelligent patient conversations, coordinate...

Full Stack Engineer (Backend focused) The company and our mission: Zartis is a global AI transformation and technology consulting partner where talented engineers and technologists work on cutting edge innovation. Our teams bring deep expertise in AI driven platforms, secure API architectures, and cloud native engineering. You will work on meaningful...

About the role:Our team is at the heart of our success.You'll be part of a culture where everyone is respected, included, and encouraged to grow.We value continuous learning, uphold a high work ethic, and have fun along the way.As a Senior iOS Developer, you'll work on the Printful and Printify iOS apps, which merchants use to design products, manage their...

Project descriptionWe are seeking an experienced Software Developer to help modernize a mission-critical Portfolio Management System (PMS) used by investment professionals across front-office investment functions.The successful candidate will play a key role in transforming a mature WPF-based desktop platform into a modern, scalable, high-performance...