Empleos de senior backend java engineer remote en Barcelona

Jobgether SRL, on behalf of a partner, is seeking a Senior Full Stack Developer (React + Node.js) based in Spain. You will design and implement modern frontend with React, and robust backend with Node.js/NestJS, on a cloud-native AWS platform. Join an international team, work remotely, influence architecture, CI/CD, and AI-assisted development. Requires 7+...

Oxigent Technologies busca un/a Software Engineer para unirse a un equipo global de desarrollo. Participarás en el ciclo completo del producto, desde el diseño hasta el post-lanzamiento, con énfasis en calidad, rendimiento y escalabilidad. Trabajarás en un entorno híbrido con oficina en Poblenou, Barcelona, colaborando con ingenieros de software,...

Logicalis Spain busca un/a Senior AI Engineer para unirse a su servicio de IA en una importante compañía del sector telecomunicaciones. Participarás en el diseño, desarrollo y despliegue de soluciones basadas en LLMs, modelos multimodales y sistemas multiagente, en entornos cloud y contenedores, con AWS.Se valorará experiencia en IA generativa,...

Senior AI Research Engineer, Model Inference (Remote)Join to apply for theSenior AI Research Engineer, Model Inference (Remote)role Join Tether and Shape the Future of Digital FinanceAt Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to...

Develop and maintain core Workato Recipe runtime components, focusing on high-throughput distributed systems in Go. Responsibilities include performance optimization, concurrency, and system modernization.

Jobgether SRL is seeking a Founding Senior Software Engineer based in Spain to build and scale an AI-powered platform. You will own architecture decisions, shape product direction, and drive end-to-end development in a lean, autonomous team.You will integrate AI capabilities, work on high-performance APIs, and influence infrastructure choices to support...

AGE Solutions is seeking an experienced Sr. Network/Systems Engineer to design, implement, and optimize enterprise networking and hybrid infrastructure. The role requires DoD Top Secret clearance, IAT Level II certifications, and 8+ years of relevant experience.The position is remote within the United States with travel to client sites (CONUS/OCONUS) about...

Jobgether SRL, on behalf of a partner company, is seeking a Senior Data Infrastructure Engineer (Scraping & Scale) based in Spain for a fully remote role. You will design and scale high‑performance web scraping and data ingestion systems to collect millions of social profiles, posts and video records daily while tackling anti‑bot challenges and building...

PMAT Inc. is seeking a Senior Systems Engineer to oversee multiple subsystems and drive high-level designs for world-class defense systems. The role emphasizes collaboration with government and private partners to address risk, scalability, and legacy readiness while mentoring engineers and delivering rapid prototypes. The successful candidate will lead...

Proton Technologies AG is hiring for a backend-focused role in our Payments team. You will build features across Proton products, work closely with product engineers, and shape scalable software architectures that power a global subscription ecosystem.A strong emphasis is placed on performance, security, and high-quality API design to enhance user...

DATA PROTECTION INFORMATION.Responsible for the treatment: K-LAGAN ESPAÑA, S.L. Purposes: Respond to your job application and send you commercial information about our products and services, including by e-mail if the interested party authorizes it. Legitimation: Consent of the interested party. Retention periods: The data will be kept for the duration of...

En AD4 Octógono estamos contratandoBuscamos un/a Senior Java Developer con al menos 5 años de experiencia en desarrollo Java para incorporarse a un proyecto basado en una arquitectura moderna de microservicios.El backend se desarrollará íntegramente con Java y Spring Boot, trabajando con APIs REST, PostgreSQL y servicios Cloud en AWS.Conocimientos...

Airalo is seeking a Senior Backend Engineer to evolve our global platform serving 20+ million users. You will lead architectural decisions, implement scalable services, and drive SOA transitions. You will mentor mid-level engineers, enforce SOLID, and collaborate with Product and DevOps to translate requirements into roadmaps. Remote role for Spain...

A leading technology company in Madrid is looking for a technically skilled Java Engineer to join their dynamic Software Engineering department. The role involves architecting and developing software services using cutting-edge technologies. Ideal candidates have over 3 years of experience in Java and Spring-based technologies. The company promotes flexible...

Miratech helps visionaries change the world. We are a global IT services and consulting company that brings together enterprise and start-up innovation. Today, we support digital transformation for some of the world's largest enterprises. By partnering with both large and small players, we stay at the leading edge of technology, remain nimble even as a...

Servicios y tecnología de la informaciónTeletrabajo/RemotoEmpleadoQA Engineer/Automatizador.FOREX.Ingles.Remoto Publicada 2 de OctubreEn Grupo NS buscamos un/a QA Engineer con experiencia en automatización y conocimientos sólidos en FOREX, para incorporarse a un proyecto tecnológico dentro de un entorno Agile y de trabajo en squads.Modalidad remota,...

About Us HSP Group is the premier provider of global expansion services, helping companies simplify the complex challenges of operating internationally. We deliver a seamless experience across legal entity setup, global HR, payroll, compliance, tax, and advisory, enabling our clients to scale faster, stay compliant, and reduce risk in every market they...

Reference: 1129622Job ID: 5417508Posted: 2026-09-29Closing date: 2026-12-28Location: Barcelona - 4 remote work days per weekSalary: up to 50.000 euros gross anual (per annum)Job type: PermanentIndustry: Tecnología e Internet / TechnologyCompany: HaysConsultant: Anna GarrigaHays office: Barcelona — Hays Barcelona, Calle Valencia, 307-313, bajos 1ªPhone:...

Reference: 1129622Job ID: 5417508Posted: 2026-09-29Closing date: 2026-12-28Location: Barcelona - 4 remote work days per weekSalary: up to 50.000 euros gross anual (per annum)Job type: PermanentIndustry: Tecnología e Internet / TechnologyCompany: HaysConsultant: Anna GarrigaHays office: Barcelona — Hays Barcelona, Calle Valencia, 307-313, bajos 1ªPhone:...

Senior Fullstack Engineer in Madrid/Barcelona (remote) for an International client Job role: Senior Fullstack Software Engineer Job description: A Senior Fullstack Software Engineer with high experience in Dev Ops, Kubernetes & Python. Location: Madrid/Barcelona (Remote)Languages required: English (C1) MANDATORYMinimum experience: 5 to 7 years Rate:...