Empleos de remote java backend engineer ai en Barcelona

10x Team is seeking a Freelance System Operations Engineer – AI Trainer to review, refine, and train AI models for real-world operational challenges, working remotely in the EU or UK for 8–20 hours per week.You will bring extensive experience in system operations, SRE/DevOps, and automation to assess AI-generated operational content, develop practical...

Lever, Inc. is seeking a Technical Support Engineer based in Spain.This remote-first role focuses on maintaining a cloud-commerce platform for large service providers.You will own customer-impacting incidents from investigation to resolution, working with developers, product teams, and

Grupo NS busca un Desarrollador Senior Full Stack con Angular y Java para un proyecto importante en el sector seguros. Se valorará experiencia en IA (Claude/Agentic) y familiaridad con tecnologías en la nube (AWS/Azure/Google Cloud). Modalidad híbrida en Barcelona. Requisitos mínimos: 7 años de experiencia, dominio de Angular/React/Vue, Java/Spring...

The RoleWe 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...

1Password is hiring a Sr Enterprise Systems Engineer, AI Productivity, to design, maintain, and scale secure AI and automation solutions across the company.The role partners with both technical and non?technical stakeholders to identify workflow challenges and deliver practical, scalable improvements.Reporting to the Manager, Enterprise Tools, this US?based...

Darwin Recruitment is seeking a freelance AI/Atlassian Rovo consultant to deliver hands-on Rovo agents in a live enterprise environment.You will design, build and roll out agents, advise on tool fit, and drive adoption and governance across the business.The role requires strong Jira/Confluence administration, experience with GPT/Claude-style tools, and...

10x Team is seeking a seasoned System Operations Engineer – AI Trainer for freelance engagement.Work 8–20 hours weekly, remotely, with EU/UK-based availability.Contribute to reviewing AI-generated operational content, refining workflows, and building practical, real-world scenarios for AI models.Flexible, project-based, remote collaboration with access...

Noodle is seeking a Prompt Systems Engineer to sit at the intersection of AI capability and educational effectiveness.You will own the prompts and system instructions powering AI agents across enrollment, learning, and student support.You will design, test, and continuously improve prompts, collaborate with product managers, learning designers, university...

Grupo TECDATA Engineering busca un Senior AI Platform Engineer para liderar la plataforma de LLM Gateway asociada a BBVA.Trabajarás en teletrabajo con jornada completa, asegurando una integración segura, escalable y gobernada de modelos fundacionales para las aplicaciones de IA del grupo.Deberás diseñar e industrializar la solución, gestionar...

Lever, Inc. is seeking a Software Craftsperson/Typescript- II based in Spain.This remote role focuses on building scalable backend systems and AI-powered workflows using TypeScript, OpenAI, Claude and agentic frameworks.You will own end-to-end initiatives, mentor peers, and shape engineering practices with a hands-on, craft?driven approach.You'll collaborate...

Lever, Inc. in Spain seeks a Growth Engineer to own SEO, SEM, GEO, and GEM initiatives, blending strategy with hands-on execution to drive qualified B2B leads and revenue.You will work directly with leadership in a fast-paced, experimentation-driven environment, starting with a 3-month project and potential transition to a full-time role, with remote options...

Triple is seeking a hands-on Security Engineer to own PCI DSS for our AI-driven banking operations. You will work with product teams and banks to ensure Triple's AI infrastructure meets PCI expectations, including vulnerability management, secrets/key management, and secure design reviews.You will also harden cloud and container infrastructure, run threat...

Kraken is expanding its Agent Systems team to build AI-powered agents that automate internal workflows across our platform. You will design, prototype, and productionize backend services that reason over user interactions and integrate with multiple internal APIs. We value strong backend fundamentals, distributed systems thinking, and hands-on AI/ML...

Oxigent Technologies ищет старшего Python-инженера в Барселоне для команды Code Foundations. Вы будете работать над критически важной инфраструктурой backend, микросервисами и коммуникациями между сервисами. Требуется...

HSP Group in Barcelona is seeking a Lead Backend Engineer responsible for the technical direction of Gateway HR. The ideal candidate should have over 7 years of backend development experience and a strong technical leadership background. Responsibilities include evolving the architecture for scalability and leading external teams. This remote role offers the...

Lever, Inc. is seeking a Staff Backend Engineer for AI Tooling based in Spain. This high-impact role focuses on building platforms and AI-powered capabilities that accelerate engineering teams while maintaining quality. You will own complex initiatives end to end, partnering with leadership to set roadmaps, and mentoring engineers. The role blends hands-on...

Accessiway is seeking a Backend Developer (Mid / Senior) to design and build scalable backend systems that power digital accessibility worldwide. You will work in a hybrid setup with remote work and on-site presence in Turin, Italy, contributing to Lambda, ECS, REST APIs, and data storage strategies while collaborating with cross-functional teams.Ideal...

Elastic is seeking a Senior Java Developer to join the Elasticsearch team and drive the Inference API. You will build and maintain the plugin framework and REST API, collaborating with the inference team and the Kibana team to deliver scalable, reliable software across Elastic's cloud and hosted environments. Ideal candidates bring 5+ years of production...

EPAM Systems in Malaga, Spain, seeks a Senior Java Engineer to design, develop and evolve backend services powering MLS Touch and MLS Client. You’ll build RESTful APIs, craft scalable microservices, and optimize data layers while ensuring security, performance and reliability.The role requires working US-aligned hours (2:00 PM–10:00 PM CET). You’ll...

Capitole is expanding, and we are seeking a Senior Full-Stack Developer (M/F) with strong Java, Spring Boot, and Angular to join an international project remotely from Spain. Design, develop and maintain scalable applications, build backend services, work with microservices and REST APIs, and contribute to architecture decisions in an Agile DevOps...