123,250+ Remote Fullstack Engineer Java React Ai Api Builder Jobs in Spain — Top Companies Hiring July 2026

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Hybrid Barcelona AI/ML QA Engineer – LLM Testing Expert

A rapidly expanding deep tech company in Barcelona is looking for a Software Quality Assurance Engineer with a focus on AI and machine learning. In this role, you will ensure the reliability and robustness of AI-driven solutions, develop test suites, and design testing frameworks. Ideal candidates should possess ...

Senior Python AI/ML Engineer – Cloud, ETL & Data Pipelines

A dynamic tech service provider in Comunidad Valenciana is seeking an experienced Python Developer to develop applications with AI integrations and design machine learning models. The ideal candidate will have 5+ years of experience, strong knowledge of AWS or Azure, and proficiency in Python. This role offers a ...

AI Powered Full Stack Engineer — Build Scalable Web Apps

A leading technology and localization company in Madrid is seeking an experienced Full Stack Engineer to join their AI Team. This role involves developing innovative AI-powered software applications, building user-friendly web interfaces, and creating robust backend APIs to support scalability. The ideal candida ...

(Senior) Full Stack AI Engineer (F/M/X) Valencia

What We’re Looking Hello future (Software) Product Engineer. Everyone at HUBBLR is obsessed about building innovative products with our clients and we hope you are as well. We take pride in believing that the way products should be built in 2026 is a fast moving, iterative approach but, u ...

Senior AI Test Automation Engineer 100% (f/m/d)

At Julius Baer, we celebrate and value the individual qualities you bring, enabling you to be impactful, to be entrepreneurial, to be empowered, and to create value beyond wealth. Let’s shape the future of wealth management together. You will join our ML & AI ART as a Senior Test Automation Engineer, respo ...

Global Siri ML Tools Engineer — Build Next Gen AI

Apple is seeking a Machine Learning Tools Engineer for their Siri team in Barcelona. The role involves designing and deploying machine learning systems to enhance Siri's capabilities. Candidates should have proven experience in machine learning-based software, proficiency in languages like Python or Swift, and e ...

Mid Senior Python Backend Engineer for AI/ML Cloud

A technology recruitment agency is seeking a Mid-Senior Back End Developer specializing in Python, machine learning, and data science in Zaragoza, Spain. This full-time role involves working with Fortune-500 clients and leading technical efforts in AI and quantum technologies. Candidates should have a strong edu ...

Senior DevOps Platform Engineer – Azure & AKS for Generative AI

Grupo NS busca un DevOps / Platform Engineer con amplia experiencia en Azure, Kubernetes y Cloud Native para una plataforma agéntica de IA Generativa. Serás responsable de diseñar, automatizar y mantener la plataforma, garantizando disponibilidad, seguridad y escalabilidad. Trabajarás con IA, desarroll ...

Senior Agentic AI Engineer: End to End Automation Architect

Jobtailor busca profesionales en IA para diseñar soluciones avanzadas que integren agentes y tecnologías en la nube. El rol requiere experiencia en Data & AI, STEM y capacidades para convertir retos empresariales en soluciones automatizadas. Se valoran conocimientos de LangChain, LLMs y pipelines de IA ...

Llm Ai Engineer (Python) — Fintech, Madrid, Impact A Year

AI Engineer needed for a FinTech start-up in Madrid. Requires AI, Python, and a degree in Computer Science or Mathematics. ...

Senior Backend Engineer AI Driven, End to End Ownership

Edgetier is seeking a Senior Software Engineer in Madrid, Spain, with a focus on Python development and AI tooling. Candidates should have 6+ years of experience, technical ownership, and the ability to work independently. The position offers a competitive salary ranging from €64K to €125K along with professiona ...

Llm Ai Engineer (Python) — Fintech, Madrid, Impact A Year

AI Engineer needed for a FinTech start-up in Madrid. Requires AI, Python, and a degree in Computer Science or Mathematics. ...

Senior Backend Engineer AI Driven, End to End Ownership

Edgetier is seeking a Senior Software Engineer in Madrid, Spain, with a focus on Python development and AI tooling. Candidates should have 6+ years of experience, technical ownership, and the ability to work independently. The position offers a competitive salary ranging from €64K to €125K along with professiona ...

Senior Generative AI Engineer Cloud Native & Backend Lead (Arbo)

act digital busca un/a perfil senior especializado/a en IA Generativa y desarrollo backend. Responsabilidades El rol incluye la definición de iniciativas, coordinación con equipos y supervisión de pruebas en entornos productivos. Requisitos Habilidades sólidas en Python. Arquitecturas de microservicios. Conocimi ...

Llm Ai Engineer (Python) — Fintech, Madrid, Impact A Year

AI Engineer needed for a FinTech start-up in Madrid. Requires AI, Python, and a degree in Computer Science or Mathematics. ...

Graduate Software Engineer — AI Driven End to End Impact

Bending Spoons is seeking a passionate software developer in Sevilla, Spain, to take ownership in building impactful software solutions. You will have the opportunity to integrate AI tools into your workflow while working alongside talented teams, focusing on creating scalable products that are used by millions. ...

MLOps/AIOps Engineer — Build Scalable AI Platforms on AWS

Una empresa de soluciones tecnológicas en España busca un/a MLOps/AIOps Engineer para diseñar y operar su plataforma de AIOps. Esta posición se centra en asegurar la fiabilidad y escalabilidad de los productos de inteligencia artificial. Se requiere experiencia en MLOps y AIOps, así como habilidades en automatiz ...

Platform Engineer (Cloud Infrastructure, AI Platform) (m/f/d)

Key responsibilities As a Platform Engineer within Advanced Analytics (DA3) in the Chief Data & AI Office area at Allianz Partners, you will join our central AI team to build and operate the cloud infrastructure that powers AI-enabled solutions at global scale. We are looking for an engineer with deep Ku ...

AI Engineer: Lidera Soluciones de IA en la Nube

SDG Group España busca Ingeniero/a de IA para liderar el desarrollo de soluciones de Inteligencia Artificial de principio a fin, desde entender el problema hasta desplegar sistemas productivos en la nube. Se trabajará en proyectos de innovación en IA, aplicando modelos avanzados y plataformas como Azur ...

Senior AI Engineer | Google Cloud & Gemini Enterprise (100% Remoto)

We are knowmad mood! ¿Te apasiona la Inteligencia Artificial Generativa y el ecosistema Google? Buscamos un/a Software Engineer especializado/a en Google Cloud Platform, Google Workspace y Gemini Enterprise para participar en proyectos innovadores de transformación digital e IA gene ...

Senior Full Stack Product Engineer — Flexible Hours AI Driven

Haddock in Barcelona is looking for experienced engineers who are interested in taking ownership of their work while developing AI workflows. You'll be responsible for designing technical solutions and building code in microservice environments, primarily on the backend. The ideal candidate has over 5 ...

Senior Python DevOps Engineer: AI‑Driven Automation & CI/CD

Lognext is looking for a Senior Python Developer – DevOps and AI-oriented to join their team. This role involves designing automation tools, developing backend services using Python and FastAPI, and managing infrastructure performance. The ideal candidate should have at least 5 years of experience in s ...

Senior Software Engineer – AI Native Data Platform (Go/Rust)

Senior Software Engineer – AI-Native Data Platform (Go/Rust) Alicante, Spain · Hybrid (2 days onsite/week) · Full-time Context & Impact Lansweeper is the AI Cyber Asset Intelligence platform helping IT and Security teams gain full visibility, reduce cyber risk, and scale automat ...

Senior AI Platform Engineer: Data Science Enablement on AWS

InnoIT Consulting, based in the Greater Barcelona Metropolitan Area, seeks a Data Science Enablement Specialist to join the AI/ML platform team. This hybrid role focuses on owning platform capabilities for reusable ML development across Data Science teams. Ideal candidates will have strong AWS and Pyth ...

Senior AI Solutions Engineer for Revenue & Go To Market

Job Details Go-To-Market Department Spain - Barcelona Full-Time/Hybrid What you will do You will join as a Senior AI Solutions Engineer for Revenue & Go-To-Market , focused on transforming our internal operations. You will be at the foref ...

AI Driven Backend Engineer (Ruby on Rails) – Hybrid Barcelona

Traveltechessentialist is seeking a Software Engineer to join their team in Barcelona. You will develop and maintain backend services and AI-powered solutions for business travel. The ideal candidate will have strong proficiency in Ruby on Rails, experience with LLM APIs, and comfortable communicating in Engl ...

Senior Physics‑Driven ML Engineer: AI for Design & Optimization

A global electronic design firm in Barcelona is seeking a Senior Applied ML Engineer to design advanced ML architectures that integrate physics insights and AI techniques. This role emphasizes collaboration with RF experts and demands a deep understanding of scientific computing and machine learning. Ideal candi ...

Founding AI Engineer ML & LLM for FinTech in Madrid

A FinTech start-up is seeking an AI Engineer to join their new Madrid office, offering a salary up to €130,000. The successful candidate will work on implementing AI and LLM functionality within their proprietary trading systems. Candidates must have a top-tier educational background in Computer Science or Mathe ...

AI Engineer — Biometrics (On site San Francisco or Barcelona)

Job Description Your mission You'll join Didit Labs , our in-house AI lab, and develop state-of-the-art biometric models — including fraud — shipped to production and used by millions. What we're looking for Deep computer-vision expertise focuse ...

Senior DevOps / Infrastructure & AI LLM Systems Engineer (Hybrid/Barcelona)

Base Pay Range $70,000.00/yr - $95,000.00/yr About Yuma AI Yuma is building a next‑generation orchestration platform that deploys autonomous AI agents dedicated to customer support in e-commerce. We already support 150+ paying merchants and help them automate up to 80% of their ...

Senior Platform DevOps Engineer – AI Driven CI/CD, Hybrid

RUBIBOO is seeking a Senior DevOps Engineer to enhance developer productivity and platform reliability in a hybrid work environment based in Madrid. The ideal candidate will play a key role in transforming software delivery processes and improving automation. You'll work closely with engineering teams ...

Senior Platform Engineer — Hybrid, AI Ready Infra & CI/CD

eDreams ODIGEO in Barcelona is looking for a Senior Platform Engineer to enhance our Data as a Service platform. You will implement Infrastructure as Code and work on automation for product deployment using CI/CD methodologies. The ideal candidate has over 5 years of experience in DevOps and a passion ...

Senior AI & NLP Engineer (Contract) ML, MT, Data Quality

All European Careers is seeking a Senior AI & NLP Engineer for a European institution in Brussels, Belgium. The ideal candidate should hold a Bachelor or Master degree and possess over 9 years of IT experience. The role involves developing software applications in the fields of Natural Language Process ...

Senior AI/ML Engineer: Production ML & MLOps on Azure

A leading AI solutions provider in Barcelona is seeking a Senior AI/ML Engineer. This role involves developing and deploying AI initiatives, focusing on the full lifecycle of machine learning solutions. The ideal candidate will have strong programming skills, expertise in MLOps, and a passion for driving real-wo ...

Senior AI & NLP Engineer (Contract) ML, MT, Data Quality

All European Careers is seeking a Senior AI & NLP Engineer for a European institution in Brussels. Ideal candidates should possess over 9 years of experience in IT and hold a Bachelor or Master degree. The role involves developing software applications specializing in Natural Language Processing, Machine Lear ...

Ingeniero de Infraestructura IA / Arquitecto MLOps (AI Platform Engineer)

Buscamos un ingeniero de Devops, arquitecto MLOps para la definición, configuración, mantenimiento, despliegue y soporte de toda nuestra estructura IA y SaaS. Será el responsable de la infraestructura para servicios SaaS con IA. Funciones Fundamentales del Puesto. Gestión ...

AI Platform Engineer Cloud & GenAI Solutions (She/He/They)

NTT DATA somos todas las personas que la formamos. Un equipo de más de 139.000 profesionales, tan diverso como los 50 países en los que estamos presentes y los diferentes sectores en los que desarrollamos nuestra actividad; telecomunicaciones, entidades financieras, industria, utilities, energía, administr ...

Graduate Software Engineer: AI Driven, End to End Impact

Bending Spoons is seeking a talented, driven software professional to join our AI‑driven, fast‑moving team. You’ll own meaningful parts of our product stack, from idea to production, and work across monoliths and microservices. Based in Europe with options for Milan, London, Madrid, or fully remote fro ...

Senior AI Software Engineer: IA Generativa en la Nube

Between Technology busca un/a Senior AI Software Engineer para su equipo en Madrid en el ámbito nuclear. El puesto implica diseñar y desarrollar aplicaciones de IA, integrar LLMs y construir servicios en la nube. Buscamos candidatos con más de 6 años de experiencia en desarrollo de software y sólidos c ...

Senior Data & AI Engineer Big Data, GCP (Hybrid Málaga)

Experis Manpower Group busca un/a Data AI Engineer para uno de sus principales clientes en Málaga. Esta posición es híbrida y requiere estar presencial en la oficina entre 2 y 3 veces por semana. El candidato ideal debe tener más de 5 años de experiencia en data engineering, así como habilidades en gra ...

DATA ENGINEER AI & DATA – HÍBRIDO MÁLAGA (H/M/X)

¿Quiénes somos? Experis, somos una compañía especializada en servicios profesionales y gestión de proyectos IT asociados a nuestras 3 prácticas: Business Transformation, Cloud & Infrastructure y Enterprise Applications. En la actualidad combinamos nuestras soluciones tecnológicas con las habilida ...

Senior Onboard Safety Critical Software Engineer: AI/DO 178B

Airbus is seeking a Senior Software Engineer in Getafe, Spain, focused on Onboard Safety Critical Computing Platforms. Responsibilities include managing software requirements, leading testing processes, and participating in software certification. Candidates should have advanced knowledge in AI technology, C/ ...

Conversational AI Engineer — End to End Voice & Chat (Madrid)

About the role At M47, we spark AI! We help tech companies understand how AI can drive their strategic objectives and effectively plan an implementation roadmap. Our mission is to leverage AI in solutions that understand, interpret, and respond to human language, empowering businesses to make bett ...

Founding Real Time Voice AI Performance Engineer — Equity & Hybrid

Slng Ltd in Barcelona is seeking a Speech Model Performance Engineer to enhance speech model speed and efficiency. This role involves collaborating with the founding tech team, quantising neural models, and benchmarking ASR performance. The ideal candidate will have expertise in ASR or TTS, experience ...

AI Engineer: LLM & RAG Specialist on Python & Azure (Hybrid)

Ekkiden is seeking an AI Engineer for a full-time, on-site position in Barcelona, Spain. Your role will focus on developing scalable Python microservices and integrating Generative AI solutions into production environments. Ideal candidates will have 4-7 years of software development experience with st ...

Research Engineer AI Support for Air Quality Services (Barcelona)

Position Research Engineer- AI Support for Air Quality Services (RE1) Reference 307_26_ES_ESS_RE1 Closing Date Sunday, 19 July, 2026 About BSC The Barcelona Supercomputing Center – Centro Nacional de Supercomputación (BSC-CNS) is the leading supercom ...

Face Recognition AI Engineer Elite In Office SF/Barcelona

DIDIT is seeking a skilled individual for Didit Labs to develop cutting‑edge biometric models for production. The role involves building and shipping face recognition models in a fast‑paced, high‑ownership environment. The ideal candidate should have deep computer-vision expertise and strong deep-learn ...

Senior AI Solutions Engineer for Revenue & Go To Market

Job Details Go-To-Market Department Spain - Barcelona Full-Time/Hybrid What you will do You will join as a Senior AI Solutions Engineerfor Revenue & Go-To-Market, focused on transforming our internal operations. You will be at the forefron ...

Azure AI Engineer: End to End Content Automation & LLMs

Astek is seeking a highly skilled AI Specialist to lead a global initiative focused on transforming content creation and management. With over 8 years in software development and a strong background in AI/ML engineering, you will drive end-to-end AI solutions leveraging Microsoft Azure technologies. Ke ...

Real Time AI Product Engineer: Build the Trade Graph

xNova International in Castro-Urdiales, Spain, is looking for an AI Product Engineer to design, build, and deploy an innovative product using real-time data. You will work on crucial tasks like ensuring data quality and developing machine learning models that enhance user experience. This permanent ful ...

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    Remote Fullstack Engineer Java React Ai Api Builder Jobs in Spain Job Search Guide, Trends and Insights