149,505+ Ai Driven Fullstack Engineer Java React Jobs in Spain — Top Companies Hiring June 2026

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Senior AI Platform Engineer — Remote in Spain

A leading tech platform for culture seeks an AI Software Engineer to leverage AI in optimizing workflows and enhancing applications. The ideal candidate will configure applications with Large Language Models while integrating various AI tools. Responsibilities include collaborating with development teams to impl ...

AI Solutions Engineer — Pre Sales Architect & Demos

A leading AI solutions company in Spain is seeking an experienced Solutions Engineer to drive pre-sales engagements. In this role, you will demonstrate CrewAI's multi-agent platform and collaborate with sales to meet customer needs. The ideal candidate has over 3 years of experience in a technical pre-sales role ...

DevOps Engineer (Automation Systems) Freelance AI Trainer

Mindrift is looking for skilled DevOps / Automation Engineers (Infrastructure & Scaling) to join the Tendem project ( and build and maintain scalable infrastructure for automation workflows within our hybrid AI + human environment. In this role, as an AI Pilot - that's how we refer to this ...

Senior ML Engineer: GenAI & Scalable AI Pipelines

A leading life sciences technology company in Spain is seeking an AI Engineer to work within a cross-functional team to develop and scale AI tools. The position requires 4+ years of software development experience and proficiency in Python. Ideal candidates will also have experience with AWS or GCP and are expec ...

Senior ML Engineer: LLM & AI Platform Innovator

A modern fundraising platform is seeking an experienced ML Engineer to join their team in Spain. In this role, you will develop and deploy machine learning solutions across various business areas, collaborating with product teams. Ideal candidates should have 5+ years of experience in machine learning, a strong ...

Senior Python Backend Engineer — AI Ready APIs

Una empresa tecnológica en España busca un desarrollador back-end Python con experiencia en FastAPI o Flask para construir plataformas de software alineadas con la estrategia de IA. Se requiere al menos 5 años de experiencia, habilidad en sistemas distribuidos, APIs RESTful y pipelines de CI/CD. Un entorno flexi ...

Senior Data Engineer – AI Labs (Hybrid Madrid)

Insud Pharma in Madrid is seeking a Senior Data Engineer – AI Labs to build and operate data structures and pipelines for social impact projects. The role demands 5+ years in Data Engineering, with strong knowledge of SQL and Python. Responsibilities include ensuring data quality and availability for d ...

Senior AI Solutions Engineer — Vision & YOLO (Hybrid)

Ultralytics is seeking a Solution Engineer to join our dynamic team focused on innovative AI solutions. The role involves working directly with clients to design and deploy computer vision applications using our advanced YOLO models, bridging the gap between client needs and technical solutions. This f ...

GPU Infra Engineer — HPC, Linux & AI Ops

SOTEC CONSULTING is seeking a data-driven technical professional to manage GPU farm capacity using monitoring tools like Grafana and Prometheus. You'll analyze trends, develop forecasting models, and translate technical metrics into clear reports for executive stakeholders while ensuring reliability an ...

AI Innovation Engineer — GenAI, 5G & Cloud Prototyping

Vodafone is seeking a dynamic individual to enhance its corporate research in AI and Machine Learning. This full-time role involves developing innovative AI solutions, collaborating across various departments to transform Vodafone’s service offerings. The ideal candidate will require hands-on expertise ...

Generative AI Backend Engineer — LLMs, RAG & Tools

Capitole está en busca de un/a Ingeniero de Software AI para diseñar y desarrollar herramientas de IA generativa que optimicen el trabajo de desarrolladores. El enfoque principal será en la creación de sistemas avanzados basados en LLMs y en el desarrollo de APIs robustas. Se requiere experiencia sólid ...

Remote AI Engineer: Python, LLMs & Cloud DevOps

SNI is looking for an AI Engineer to design and develop AI/ML solutions from their base in Spain. This position requires a minimum of 2 years of Python development experience and familiarity with AI concepts and cloud platforms. The role includes collaborating with teams, developing scalable applicatio ...

Remote ML/AI Platform Engineer — MLOps/LLMOps

Capitole busca un/a ML/AI Platform Engineer para 100% teletrabajo. Con 2-4 años de experiencia, serás responsable de la plataforma de AIOps y de operar soluciones de inteligencia artificial. Este rol incluye flexibilidad horaria y un presupuesto de 1.200€ para formación. Ofrecemos un entorno internacio ...

Remote AI Engineer: Python, LLMs, Cloud & DevOps

Join SNI as an AI Engineer to design and develop AI/ML solutions while working remotely from Spain. You will engage with engineering teams to optimize workflows in cloud-based environments, emphasizing the development of Python applications and microservices. The ideal candidate should have at least 2 ...

Remote QA Engineer – AI‑Powered Testing & Automation

Terminalfour is looking for a Quality Assurance Tester to join their Agile product team remotely. You will ensure product quality through exploratory testing, automation development, and collaboration with cross-functional teams. The ideal candidate has 3+ years of QA experience, expertise in automatio ...

Edge AI Inference Engineer — Low Latency Serving

Tether Operations Limited is looking for an expert AI model team member to drive innovation in model serving and inference architectures. The role emphasizes optimizing deployment and inference strategies for high performance across real-world applications. Ideal candidates will hold a degree in Comput ...

Senior AI/ML Engineer — Hybrid, Global Impact

A leading technology company in Spain is seeking a Senior Artificial Intelligence/Machine Learning Engineer to lead machine-learning infrastructure and mentor a team. This role involves driving the development of scalable, reliable solutions and collaborating with Data Scientists for model deployment. The ideal ...

Senior AI Research Engineer, Model Inference (Remote)

Senior AI Research Engineer, Model Inference (Remote) Join to apply for the Senior AI Research Engineer, Model Inference (Remote) role at Tether.io Join Tether and Shape the Future of Digital Finance At Tether, we’re not just building products, we’re pioneer ...

Robotics & AI Software Engineer (C++ / Distributed Systems)

Build the software backbone of Robotics and AI Are you passionate about Robotics and Artificial Intelligence? Do you want your code to run in thousands of robots, autonomous vehicles, industrial systems and safety‑critical platforms worldwide? At eP ...

Senior Applied AI Engineer – Developer Productivity & SDLC

Keysight is on the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization. Our ~15,000 employees create world-class solutions in communications, 5G, automotive, energy, quantum, aero ...

Senior ML Engineer — Real Time AI & MLOps

AI Chopping Block, Inc. is looking for a Machine Learning Engineer in Spain to build and maintain scalable ML systems. This role offers the chance to shape AI technologies and work with cutting-edge research in a high-growth startup environment. Candidates must have a strong background in ML, deep learning, and ...

Senior Generative AI Engineer | Python + AWS + RAG

Qué buscamos Buscamos un perfil senior especializado en IA Generativa y desarrollo backend con Python, con experiencia construyendo soluciones robustas desde el diseño hasta producción. La persona participará en el desarrollo de agentes IA, sistemas RAG y arquitecturas basadas en microservicios ...

ML Engineer (Founding Team) AI Drug Discovery

CT19 is partnering with an early-stage venture-backed biotechnology technology company that is building next-generation AI systems to help scientists better understand, model, and engineer complex biological systems. The company is developing a platform that combines experimental data, scien ...

Enterprise Value Engineer for AI Automation ROI

A technology firm specializing in enterprise AI is seeking a Value Engineer to build business cases and quantify the impact of their platform on customer operations. You will engage with C-suite executives to clarify the value delivered through automation, leading structured workshops and creating compelling fin ...

Senior Cloud Conversational AI Engineer (Python/Node.js)

Altostratus | Part of Telefónica Tech busca un profesional para refactorizar la lógica de fulfillment y conectividad usando el framework ADK de Google. Se requiere experiencia en desarrollo Backend en Python o Node.js y en despliegue en Cloud Run. El candidato trabajará en la creación de APIs y Webhook ...

Backend AI Tooling Engineer – .NET & Integrations (Remote)

A leading language services provider is seeking a Full Stack Engineer to join their Core Platform Team in Spain. You will be responsible for designing and building backend services and APIs that enable AI agents to solve real business problems. The ideal candidate should have strong skills in .NET technologies, ...

AI Engineer Python, LLMs & Cloud (Remote Spain)

SNI is looking for an AI Engineer to design, develop, and support AI/ML solutions remote from Spain. The role will involve developing Python-based applications and APIs while collaborating with DevOps teams. Candidates must have a minimum of 2 years Python experience, along with knowledge of AI/ML conc ...

Remote AI Software Engineer (Contract) Prompt & Benchmark

Call For Referral is seeking a part-time remote software engineer to engage in high-impact AI research. The role involves reviewing and refining AI-generated content, validating algorithms, and providing structured feedback. Ideal candidates have over 2 years of experience in software engineering or te ...

Remote Senior AI/ML Engineer — LLMs & Multimodal

A leading IT outsourcing firm is looking for a Senior AI/ML Engineer to lead initiatives in fine-tuning large-scale AI models and build distributed AI architectures. The role is fully remote with some in-person sessions in Prague. Key qualifications include advanced skills in Python, deep learning, and experienc ...

Senior Backend Engineer – AI Labs, APIs & Cloud

Insud Pharma is seeking a Senior Backend Developer who will design, build, and scale robust backend systems to support AI-driven products in various domains. The ideal candidate should be fluent in both Spanish and English and have strong experience in Python, along with expertise in REST APIs and scalable ar ...

Remote NestJS Backend Engineer TypeScript & AI ready

Kubide, ubicada en España, está buscando un Backend Developer para unirse a su equipo. La empresa se especializa en desarrollo web y ofrece un ambiente de trabajo altamente colaborativo. Se requiere un perfil con 2-3 años de experiencia en desarrollo backend, así como conocimientos en TypeScript y NestJS. </p ...

Senior AI Search Performance Engineer — Remote Flexible

Cohere is looking for a talented individual to join their Compass team to optimize and scale search applications. Your work will directly enhance document understanding capabilities and significantly improve user experiences with AI-powered search. Ideal candidates will have proficiency in Python, back ...

Senior QA Engineer — AI‑First SaaS (Remote)

A leading AI startup is seeking a Senior QA to build the QA function from the ground up. This role involves establishing practices for an AI-first SaaS platform, ensuring reliability at scale, and championing user empathy throughout the process. With a remote-first culture and a high-performing team, this positi ...

Senior Generative AI Engineer | Python + AWS + RAG

Qué buscamos Buscamos un perfil senior especializado en IA Generativa y desarrollo backend con Python, con experiencia construyendo soluciones robustas desde el diseño hasta producción. La persona participará en el desarrollo de agentes IA, sistemas RAG y arquitecturas basadas en microservicios ...

Junior Backend Engineer – Remote (Fraud Detection AI)

Una empresa de software de IA busca un Backend Developer para trabajar en el desarrollo de su aplicación de detección de fraude en medios de pago. Esta posición es completamente remota y requiere que los candidatos residan en España. Las responsabilidades incluyen el diseño y desarrollo de módulos de la aplicaci ...

Remote AI Engineer (Spain) Python, LLMs & Cloud

SNI is seeking an AI Engineer to design and support AI/ML solutions within cloud environments. The ideal candidate will have a strong background in Python development and AI/ML concepts, along with experience in microservices and DevOps practices. This role allows for remote work from Spain and is init ...

Software Development Engineer

Location: Barcelona/Madrid, Spain or Warsaw, Poland¿Quiere presentar una candidatura? Asegúrese de que su CV está actualizado y luego lea atentamente las siguientes especificaciones del puesto antes de solicitar.Job OverviewWe are looking for a Software Development Engineer to join the Applied ...

Ai Engineer €30.000 €35.000 Al Año (Madrid)

Location & Working Model Madrid (Hybrid: 3 days office / 2 remote) €70K–80K + 15% bonus + Benefits International environment | 20 days remote work abroad 3 open positions About the Opportunity We are currently supporting a fast-growing international e-commerce ...

Desarrollador Java (100% Remoto)

En OPTIMISSA tenemos claro que el éxito de nuestros proyectos se debe a las personas que forman nuestro equipo. Por eso, si tienes 2 años de experiencia como Desarrollador/a Java , nos comprometemos a satisfacer tus expectativas laborales y hacerte sentir como en casa. < ...

Senior Spring Boot & Webflux Developer (Reactive Expert)

An international consulting group is seeking a Fullstack Developer in Málaga, Spain.Siga leyendo para descubrir lo que necesitará para tener éxito en este puesto, incluyendo habilidades, cualificaciones y experiencia.The ideal candidate will have extensive experience in Java Spring Boot, reactive fra ...

Senior Full Stack Developer: Angular + Java, Public Sector

Agap2 España busca un/a Senior Fullstack Developer para un proyecto estratégico en la administración pública, centrado en la evolución de un sistema de gestión agrícola. El candidato trabajará con Angular y Java en un entorno innovador.Asegúrese de enviar su solicitud rápidamente para maximizar sus posibil ...

Senior Full Stack Tech Lead: Java 17, Spring & Angular

Una empresa de consultoría tecnológica busca un/a Senior / Lead FullStack Developer en Barcelona.Habilidades, experiencia, cualificaciones... Si tiene el perfil adecuado para esta oportunidad, asegúrese de inscribirse hoy mismo.El rol incluye liderar iniciativas técnicas y desarrollar soluciones en u ...

AI Powered QA Automation Engineer (Remote Spain)

Zepo Intelligence is seeking a skilled QA Automation Engineer to develop robust automation frameworks and ensure high-quality software delivery while working remotely from Spain. The ideal candidate will have 5–6+ years of experience in QA Automation and a strong grasp of both traditional and AI-driven testin ...

Senior Data Engineer — Hybrid/Remote Data Platform

Merlin Digital Human Resources is seeking a Senior Data Engineer based in Barcelona to build and evolve the data platform that powers business decisions and AI-driven products. The role involves hands-on technical execution and leadership within a modern cloud-based ecosystem. The ideal candidate will ...

Life Sciences Knowledge Graph Architect

Xebia in Castro-Urdiales is looking for a Scientific Knowledge Engineer specializing in Ontology and Data Modeling. This role is central to maximizing data assets and working closely with Product managers to develop effective data models and standards in biological data. The ideal candidate should have ...

NLP Engineer AI Systems & Language Tech (Remote)

Gradiant busca un profesional apasionado por la inteligencia artificial y el procesamiento de datos para unirse a su equipo en Galicia. Las responsabilidades incluyen investigar arquitecturas de modelos de IA y desarrollar soluciones tecnológicas. Se ofrece un salario inicial de 23.000 € SBA más benefi ...

Senior Python Engineer AI/LLM Backend (Remote)

B&B Consultores busca un Senior Python Engineer para unirse a su equipo en Cataluña, participando en el desarrollo de soluciones basadas en AI generativa. El candidato ideal tendrá sólida experiencia en el desarrollo backend y trabajará con aplicaciones que integran modelos de lenguaje. Ofrecemos un am ...

Hands On AI Solutions Engineer (GenAI & ML)

Infoser New Technologies is seeking a Data Scientist / AI Solutions Developer in Spain, Cataluña. The ideal candidate will design and develop AI solutions in a fast-paced environment, working alongside cross-functional teams to deliver solutions that create real business value. The role requires a prac ...

ML Engineer: Cloud & MLOps for AI Solutions

Ntt Data Europe & Latam busca un especialista cualificado en Machine Learning para unirse a su equipo de Inteligencia Artificial. Te encargarás de trabajar en proyectos innovadores utilizando tecnologías avanzadas y resolver retos reales en el negocio. Se requiere más de 2 años de experiencia en IA y M ...

ML Engineer – Cloud & MLOps for AI Solutions

Ntt Data Europe & Latam busca un profesional especializado en Machine Learning para unirse a su equipo de Inteligencia Artificial. Formarás parte de un grupo especializado que trabaja en proyectos innovadores, utilizando tecnologías de vanguardia para abordar retos de negocio reales. Además, se espera ...

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