92,103+ Fullstack Javascript Engineer Fullstack Jobs in Spain — Top Companies Hiring June 2026

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Remote Applied AI Engineer Gen AI, LLMs & CV

Infoser New Technologies in Las Palmas de Gran Canaria is looking for a Data Scientist / AI Solutions Developer to join their innovative AI team. The ideal candidate will work on designing and delivering AI and machine learning solutions with a strong practical focus. We seek someone who possesses robu ...

Senior Full Stack Engineer for AI & RL Platforms

Alstech is seeking an exceptional Full-Stack Software Engineer to join their team in Murcia, Spain. The role involves building full-stack applications, transforming concepts into production-ready products, and owning projects from start to finish. Ideal candidates should have strong experience in frontend tec ...

Lead Systems Integration Engineer H/m/x Madrid

Desde Manpower Professional Recruitment buscamos un Ingeniero/a Industrial – Automatización e Integración de Sistemas Logísticos. Oficina Técnica en Madrid | Viajes frecuentes por España y Europa Start-up en crecimiento en automatización logística para ecommerce busca ingeniero/a senior hands ...

Generative AI & CV Engineer, Remote Ready Python ML

Infoser New Technologies in Málaga, Spain is seeking a Data Scientist / AI Solutions Developer focused on practical AI solution development. You will create impactful AI and machine learning solutions by collaborating across various domains. The successful candidate will possess strong Python skills, w ...

Senior Full Stack Engineer: Java/Angular, Hybrid Madrid

Tamarind Intelligence busca un desarrollador backend con amplia experiencia en Java y Angular para unirse a su equipo en Madrid. El candidato ideal debe tener más de 5 años de experiencia en desarrollo, habilidades en diseño y gestión de APIs, así como experiencia en entornos con múltiples códigos. Ofr ...

Product AI Engineer Build AI Native, High Impact

Importante grupo in Spain is seeking a Product AI Engineer to redefine how AI shapes business management software. The ideal candidate will be heavily involved in AI development and product management, ensuring that AI is central to the solutions we provide. The role includes defining specifications pr ...

Hybrid Azure DevOps Engineer: Cloud Migrations & CI/CD

UST España & Latam is seeking a dedicated Software/DevOps Engineer in Madrid to support software teams in cloud migration and adopt DevOps best practices. This role offers a hybrid working model in Spain and emphasizes experience with application development and CI/CD frameworks. The ideal candidate wi ...

Senior Full Stack Engineer Tech Lead & Impact Builder

Columat busca un programador en Madrid que participe en el desarrollo y mejora continua de productos tecnológicos. Se ofrece la oportunidad de formar parte de una empresa innovadora y en crecimiento. El candidato ideal tendrá al menos 5 años de experiencia, habilidades interpersonales, y capacidad anal ...

QA Automation Engineer — Presencial en Madrid | 4k USD

Tekton Labs busca un QA Automation Engineer analítico para unirse a su equipo en Madrid. Serás responsable de asegurar la calidad de software para plataformas de pago a través de la automatización y pruebas manuales. El candidato ideal debe contar con más de 4 años de experiencia en QA y dominio de her ...

Backend QA Automation Engineer: TS/Node & API Testing

Serviclients is looking for a QA professional to develop and maintain automated tests for its cloud-based learning platform. This role focuses on backend services and requires expertise in TypeScript and Node.js. Responsibilities include designing tests, integrating automation into CI/CD pipelines, and ensuri ...

Senior Generative AI Engineer: Backend, RAG on AWS

act digital busca un perfil senior especializado en IA Generativa y desarrollo backend con Python. La persona seleccionada participará en el desarrollo de agentes IA, sistemas RAG y arquitecturas basadas en microservicios, asegurando la construcción de soluciones robustas desde el diseño hasta la producción. ...

Remote Applied AI Engineer Gen AI, LLMs & CV

Infoser New Technologies is looking for a Data Scientist / AI Solutions Developer to join its innovative team in Almería, Spain. The role involves the development of AI solutions for real business applications and requires strong practical experience in Python and machine learning. The ideal candidate ...

Azure Platform Engineer: Scale & CI/CD in Madrid

Pepper Advantage, a technology company based in Madrid, is seeking a Platform Engineer to enhance the reliability and scalability of its Azure infrastructure. The ideal candidate should have over 4 years in system engineering with deep Azure expertise and experience in Infrastructure as Code (IaC) tools. ...

Remote SRE Engineer (AWS) | Infra Automation & CI/CD

Plexus Tech en Vitoria busca un profesional SRE con sólida experiencia en AWS y un alto nivel de inglés. Ofrecemos un contrato indefinido y la posibilidad de trabajar 100% remoto. Ideal para quienes desean avanzar en su carrera en un entorno dinámico y tecnológico. Las responsabilidades incluyen gestio ...

Senior GenAI Engineer & AI Solutions Architect Python/AWS

act digital busca un perfil senior en IA Generativa con experiencia en desarrollo backend y arquitecturas cloud-native. La persona tendrá un rol clave en la implementación de soluciones de IA, participando desde el diseño hasta la producción. Se buscan habilidades en desarrollo de software, microservic ...

Senior AI/ML Engineer — Build Production AI Systems

Aily Labs in Madrid is looking for a Senior AI/ML Engineer to enhance its decision intelligence platform. This role involves supporting the productization of models and ensuring AI solutions are efficient and production-ready. You will collaboratively work with AI teams to develop robust systems and in ...

Senior MERN Stack Engineer & Tech Lead — Remote Spain

ITERIAM, ubicada en Vitoria, España, está buscando un Desarrollador Full Stack con experiencia en el ecosistema MERN. Este puesto implica diseño y desarrollo de soluciones empresariales escalables, así como la participación en decisiones técnicas y de arquitectura. Ofrecemos un contrato indefinido con ...

Remote Mid Level Python & AWS Data Integration Engineer

CAS TRAINING busca un/a Ingeniero/a de Integración en Python y Cloud con un enfoque en integraciones y procesamiento de datos. Este rol se centra en la construcción y optimización de flujos de datos en sistemas distribuidos, trabajando completamente a distancia desde España. Se requiere experiencia en ...

Naval Systems Engineer — Long Term Hamburg Defence (Hybrid)

Akkodis busca ingenieros cualificados para trabajar en proyectos del sector de defensa en Hamburgo, Alemania. Las responsabilidades incluyen el desarrollo de sistemas y la participación en proyectos de ingeniería en un entorno internacional. Requiere título en ingeniería y experiencia en construcción n ...

Senior MLOps Engineer — AI Platform & CI/CD Leader

Nn Group is seeking a Senior MLOps Engineer for their NN Digital Hub located in Madrid, Spain. This role focuses on transforming Databricks Mosaic AI into a self-service platform, empowering AI engineers across business units. You will own CI/CD standards and environment promotion for models/agents, st ...

Space Tech Full Stack Engineer — Hybrid & Flexible Hours

Tamarind Intelligence is seeking a full-stack developer to join our cutting-edge team in Madrid. You will work with technologies like Node.js and Angular within a collaborative framework. Your contributions to solution design, feature development, and software support will drive advanced technological ...

Senior Cloud DevOps Engineer: Infra as Code | Remote

Claranet Spain en Madrid busca un ingeniero cloud senior con experiencia en infraestructuras de Cloud y habilidades en 'Infrastructure as code'. Se requieren conocimientos de AWS, GCP o Azure, con valor en experiencia con Kubernetes y CI/CD. Ofrecemos un ambiente de trabajo flexible, con 3 días de tele ...

Junior QA Engineer — Madrid | Hands on Testing & Growth

Lognext busca un Junior QA Engineer para unirse a su equipo en Madrid. Esta posición es ideal para personas junior o estudiantes interesados en el área de Quality Assurance y testing de software. Los candidatos deben tener interés en diseñar y ejecutar pruebas manuales, revisar user stories y tener un ...

AI Platform Engineer Build & Operate Scalable ML Infra

SustainRecruit Talent is looking for an AI Platform / MLOps Engineer in Barcelona, Spain. The role is focused on building and operating scalable ML/AI platforms, emphasizing automation and operational excellence. Ideal candidates should come from a background in Platform Engineering, DevOps, or ML Infr ...

GTM Growth Engineer: AI Driven Revenue & ABM Ops

Bridged - Event Growth Platform in Valladolid, Spain, seeks candidates skilled at implementing AI-driven workflows in sales and marketing. You will participate in GTM campaigns and automation while collaborating with sales leadership to enhance efficiency. The ideal candidate has over two years of expe ...

Remote Full Stack Engineer (React/Node) — Vacation & Health

Kodify is seeking a talented Full-Stack Developer to join their dynamic team in Madrid or remotely within the EU. The role involves evolving platforms that draw in nearly 100M unique visitors each month while ensuring the highest standards of technical excellence. The ideal candidate should have a mini ...

Generative AI Engineer for Real World ML Solutions

Infoser New Technologies, located in Marbella, Spain, is seeking a Data Scientist / AI Solutions Developer. This innovative role requires strong practical experience in AI solution development within a dynamic engineering environment. The ideal candidate will focus on designing and implementing machine ...

Senior GenAI Engineer & AI Solutions Architect – Cloud Native

act digital busca un perfil senior en IA Generativa y desarrollo backend para liderar iniciativas automatizadas y optimizar soluciones en producción. Se requiere experiencia en arquitecturas cloud-native y habilidades en desarrollo end-to-end. El candidato ideal contará con conocimientos en herramienta ...

AI Powered Full Stack Engineer for RL Platforms

Alstech is seeking exceptional Full-Stack Software Engineers in Monterroso, Spain, to build infrastructure powering AI environments. The role involves end-to-end development of full-stack applications for reinforcement learning applications. Ideal candidates will possess strong frontend skills with Rea ...

Senior QA Engineer & Testing Leader — Agile, Health Benefits

Sogeti, parte de Capgemini, busca un/a Senior Test Engineer para proyectos internacionales en el sector de seguros. Este rol requerirá liderar procesos de Testing y QA, asegurando altos estándares de calidad. El candidato ideal posee experiencia en entornos Agile/Scrum, destacando en comunicación y aná ...

Remote SRE Engineer (AWS) | Infra Automation & CI/CD

Plexus Tech en O Chazo, Galicia, está en búsqueda de perfiles SRE con sólida experiencia en AWS para incorporar a un proyecto en el sector bancario. Valoramos nivel alto de inglés y disponibilidad para guardias. Ofrecemos contrato indefinido, la modalidad de trabajo 100% remoto, jornadas intensivas los ...

Senior AWS Platform Engineer — Global Cloud Automation & Security

Devoteam Spain busca cuatro AWS Platform Engineers que lideren la transformación de infraestructuras cloud a gran escala mediante la unificación de diversas plataformas en la nube. Estos roles son fundamentales para crear arquitecturas robustas y automatizadas en el entorno AWS, y se integrarán en un equipo á ...

Generative AI Engineer for Real World Solutions (Remote)

Infoser New Technologies in Badajoz, Spain is seeking a Data Scientist / AI Solutions Developer to design and develop AI solutions for real business challenges. The ideal candidate will have proven experience in AI/ML development, strong Python skills, and the ability to collaborate across multidisciplinary t ...

Senior GenAI Engineer: Cloud Native AI & Automation Lead

act digital busca un/a profesional senior especializado/a en IA Generativa y desarrollo backend en Madrid. El candidato ideal participará en soluciones de IA desde la fase de diseño hasta la producción, trabajando con arquitecturas cloud-native. Se valoran conocimientos en Python, microservicios, y bue ...

AI Content Engineer – End to End (Azure + LLMs)

ALTEN busca un AI Engineer para participar en un innovador proyecto farmacéutico, diseñando e implementando soluciones de IA para la gestión de contenido. Se valorará experiencia en Azure y en todo el ciclo de despliegue. El puesto ofrece incorporación a una multinacional en crecimiento, un ambiente la ...

Remote AWS DevOps Engineer Terraform & CI/CD Expert

Capitole busca un CI/CD Engineer con más de 5 años de experiencia para unirse a su equipo en Madrid. Este rol se enfoca en la infraestructura como código utilizando Terraform y en la gestión de plataformas en AWS, garantizando altos estándares de calidad y seguridad. La posición ofrece un contrato fijo ...

Practical AI Solutions Engineer: Generative AI & CV Remote

Infoser New Technologies is seeking a Data Scientist to join their innovative AI engineering team in Pamplona, Spain. The role focuses on designing, developing, and delivering AI solutions that create real business value. Candidates should have strong programming skills in Python and experience with various m ...

Remote AI Engineer Real World ML Solutions (Spain)

Infoser New Technologies in La Coruña, Spain is seeking a hands-on Data Scientist/Ai Solutions Developer to drive AI solution development. The ideal candidate should combine solid Python and machine learning skills with a practical mindset, engaging in the design and delivery of value-driven AI solutions. </p ...

AI Engineer — End to End Content for Pharma

ALTEN busca un AI Engineer- E2E Content Manager para participar en un innovador proyecto en el sector farmacéutico en Murcia, España. La persona seleccionada diseñará, desarrollará e implementará soluciones de inteligencia artificial para optimizar el ciclo de vida del contenido, integrando modelos de IA y pl ...

Big Data Engineer AWS, Spark/Scala, FinServ Focus

Infinity Quest is seeking candidates in Galicia, Spain with strong AWS and Big Data Hadoop expertise. The ideal candidate holds a degree in Computer Science or related fields, and has solid experience in SQL, Git, and DevOps tools. Familiarity with financial services is a plus. Responsibilities include ...

GTM Engineer: AI Powered Growth for Enterprise Campaigns

Bridged - Event Growth Platform, located in Almería, Spain, is seeking a skilled Growth Engineer to develop AI-driven workflows and enhance GTM strategies. Your role will focus on optimizing lead scoring and account prioritization while automating key sales processes. The ideal candidate will have over ...

Senior Embedded Test Engineer – Datacenter Power & CI/CD

Analog Devices in Castellón de la Plana, Spain, is seeking an expert in software verification for embedded systems. In this role, you will engage in test automation, regression testing, and ensure the performance and security of next-generation datacenter solutions. The ideal candidate should possess a ...

DevOps Engineer: Hybrid Role with Docker, Terraform, Nomad

Nologin Consulting Sl está buscando un DevOps Engineer para unirse a su equipo de Zaragoza o Madrid en modelo híbrido. El candidato ideal debe tener entre 1 y 3 años de experiencia, así como conocimientos en contenedores y herramientas como Git y Terraform. Se ofrece un entorno dinámico, fácil acceso a ...

AI Solutions Engineer: Generative AI & ML (Remote Spain)

Infoser New Technologies is looking for a Data Scientist to join their team in Valladolid, Spain. You will design, develop, and deliver AI and machine learning solutions that provide real business value. The ideal candidate should have strong programming skills in Python, experience in AI solution development ...

Kubernetes Cloud Platform Engineer — CI/CD & Infra Automation

act digital en Arbo, Galicia, busca un/a DevOps / Platform Engineer para optimizar y gobernar procesos operacionales en entornos cloud. Se requiere una experiencia mínima de 3 años en posiciones similares y sólidos conocimientos en Kubernetes y OpenShift. La persona seleccionada se encargará del despli ...

GenAI Engineer Hybrid Role in AI Agent Systems

Board is seeking a talented GenAI Engineer to join their multi-disciplinary Product team in Madrid. You will be crucial in developing Board AI Agents by collaborating with the team to define optimal AI architecture, optimizing prompts, and implementing evaluation frameworks. This role promotes a hybrid ...

Aws Security Engineer: Palo Alto & Ztna Expert Carballedo

Descripción RealNaut está buscando un AWS Security Engineer para unirse a su equipo en Carballedo, Galicia. Responsabilidades La persona seleccionada diseñará, implementará y operará soluciones de seguridad en entornos AWS, enfocándose en redes avanzadas y firewalls Palo Alto Netwo ...

GTM Engineer: AI Driven Growth for Enterprise Outreach

Bridged - Event Growth Platform is hiring for a Growth Engineer in Palma, Spain. The role involves building AI-driven workflows, launching GTM campaigns, and optimizing sales processes. Ideal candidates have a strong background in automation and a proven track record in growth engineering. The company ...

Senior .NET Core Engineer for Banking Platform & Cloud

Wizeline in Valencia seeks a .NET Core Developer to design and implement features for a banking platform. The role requires excellent communication skills and experience with .NET technologies along with a collaborative approach to problem-solving. Wizeline provides a remote-friendly work policy, compe ...

AI Native Full Stack Engineer: Ship Real Products

AKIBA Gaming in Marbella is searching for a strong developer to help build innovative products. Candidates should have a robust background in both frontend and backend development and be AI-native in their workflows. The ideal candidate must be experienced in gaming or SaaS, able to manage features fro ...

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    Fullstack Javascript Engineer Fullstack Jobs in Spain Job Search Guide, Trends and Insights