190,694+ Remote Fullstack Engineer Java React Ai Api Builder Jobs in Spain — Top Companies Hiring July 2026

Professional job seekers finding Spain jobs through Expertini
750,000+ professionals on Expertini 750,000+ Candidates
Join our global community
Expertini Penguin Mascot Resume Score™
Resume Score™ Instantly
Upload Your CV
Quick 30-second process

Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

Reset

Create Job Alert

 
   
Reset

Remote Senior Backend Engineer — AI Driven Migration Lead

Shakers is seeking a Backend Engineer for their logistics tech platform, responsible for migrating from Java to Python while maintaining production stability. Your role will involve legacy code management and introducing automated testing. This is a fully remote position in Spain, requiring expertise i ...

Remote First Senior Frontend Engineer — AI Planning UI

PAILOT is looking for a Senior Product Engineer specializing in Frontend/UI to enhance our AI-powered planning software. You will collaborate with product and engineering teams to create user-focused solutions in Angular and TypeScript. Your role will involve translating complex requirements into intui ...

Remote Senior Software Engineer AI Training Data & Code

Kake is seeking a Senior Software Engineer in Santa Cruz de Tenerife to contribute to AI training data development. You will work at the intersection of software engineering and AI, evaluating code solutions and providing human input to make AI systems smarter. The ideal candidate has over 5 years of e ...

Senior Frontend Engineer AI Driven Travel Platform Remote

Talent-R is hiring a Senior Software Engineer to be part of a fast-growing travel tech scale-up based in Spain. In this remote position, you will design and develop scalable backend services and APIs, taking ownership of projects from design to production. A minimum of 4 years experience in software developme ...

Sr Python Backend Engineer Remote, AI‑Driven Migration

Shakers is looking for a backend engineer in Barcelona to lead a critical platform migration from Java + Oracle to Python + PostgreSQL. Join a fast-growing logistics tech company focused on smarter, greener last-mile delivery. This role requires extensive Python experience and deep PostgreSQL knowledge ...

Data Ops Engineer – AI Enablement (100% Remote) (Madrid)

We are looking for a Data Ops Engineer – AI Enablement to work in advanced data environments and generative AI. Key Responsibilities Develop ETL/ELT processes using Python and SQL. Integrate data from multiple sources, ensuring quality, consistency, and traceability. ...

Senior Data Engineer: AI & Cloud Data Infra (Remote)

Experis España busca un Senior Data Engineer en Pozuelo de Alarcón. El candidato diseñado será responsable de crear y mantener infraestructuras de datos escalables en entornos híbridos y en la nube. Se requiere experiencia en Python, SQL, Spark y Kafka, así como formación en Ingeniería o campos afines. <p ...

Senior GenAI & LLM Engineer | Cloud AI Architect (Remote)

eXperience IT Solutions busca un/a Senior Machine Learning Engineer en Madrid, especializado/a en IA Generativa y LLMs. La persona seleccionada se encargará del desarrollo de soluciones avanzadas de IA/GenAI, trabajando con tecnologías innovadoras y en un entorno colaborativo. Se ofrece un contrato ind ...

Senior Full Stack Engineer (AI Native) Remote/Hybrid

Plexus Tech, ubicado en Barcelona, busca un/a Senior Full Stack Developer (AI-Native Engineering) para unirse a su equipo. Se requiere un candidato con más de 5 años de experiencia en desarrollo de software y un nivel de inglés C1. Ofrecemos flexibilidad laboral, desarrollo profesional continuo, y un e ...

Senior Full Stack Engineer (AI Native) Flexible & Remote

Plexus Tech, situada en Sevilla, busca un/a Senior Full Stack Developer (AI-Native Engineering) para unirse a su equipo. Se requiere más de 5 años de experiencia en desarrollo de software y un nivel de inglés C1. Disfrutarás de un entorno de trabajo flexible, así como de proyectos innovadores que gener ...

Remote Senior Software Engineer AI Training Data & Code

Kake seeks a Senior Software Engineer in Donostia/San Sebastián, Spain, to contribute to the development of AI training data. You will leverage your software engineering skills to help companies build safer and more capable AI models. The role involves coding tasks creation, code evaluation, and identi ...

Remote Senior Python Backend Engineer — AI Driven Migration

Shakers, a fast-growing European logistics tech company, is looking for a backend engineer to lead a critical platform migration from Java + Oracle to Python + PostgreSQL. This role offers full ownership over critical pieces of the migration and involves collaborating with product managers across the product ...

AI Native Senior Full Stack Engineer | Flexible/Remote

Plexus Tech, con más de 25 años de experiencia, busca un/a Senior Full Stack Developer (AI-Native Engineering) en Las Palmas de Gran Canaria. El candidato ideal tendrá más de 5 años de experiencia, un sólido conocimiento de Java y tecnologías frontend, y dominará el inglés a nivel C1. Ofrecemos flexibi ...

Software Engineer – AI Assisted Development | 100% Remote (Boiro)

At ASTEK Iberia, we are looking for a highly skilled Software Engineer specialized in AI‑assisted development to lead the adoption of modern AI coding practices across our engineering teams. ¿Posee las habilidades y la experiencia adecuadas para este puesto? Siga leyendo para descubrirlo y envíe su ...

Remote DevOps Engineer (AWS, GitHub Actions & AI SDLC)

Lognext, ubicada en Galicia, busca un/a DevOps / SRE Engineer con sólidas habilidades en CI/CD y experiencia en la migración a GitHub para unirse a su equipo. Se valorará la experiencia en la integración de IA aplicada al SDLC. El rol permite trabajar de forma 100% remota, con ocasional flexibilidad pa ...

Senior AI/ML Ops Engineer — Remote, Strategic Delivery

Lognext busca incorporar a un/a Ingeniero de AI/MLOps para su centro de IA en Vitoria, España. El rol requiere experiencia en gestión de iniciativas de IA y conocimientos avanzados en plataformas de ML y big data como Databricks y Azure ML. Ofrecemos un esquema de trabajo 100% remoto con un salario com ...

Software Engineer – Ai Assisted Development | 100% Remote (Marzán)

At ASTEK Iberia, we are looking for a highly skilled Software Engineer specialized in AI‑assisted development to lead the adoption of modern AI coding practices across our engineering teams within a large‑scale consumer healthcare organization. Main responsibilities Define and standard ...

Remote Senior PHP Engineer AI Driven Backend Architect

Talent-R is seeking a Senior Software Engineer to revolutionize customer experience through AI and automation. This position is pivotal in addressing complex technical challenges involving distributed systems and backend services, contributing to the global scaling of technology and operations. The rol ...

Senior AI Native Full Stack Engineer | Flexible & Remote

Plexus Tech en Castro-Urdiales busca un/a Senior Full Stack Developer para unirse a su equipo. Con más de 5 años de experiencia, trabajarás en proyectos innovadores que impactan en sectores clave, utilizando tecnología de punta. El candidato ideal debe tener un nivel de inglés C1 y una sólida experienc ...

Generative AI Engineer — LLMs to Production (Hybrid/Remote)

h&k | Smart Tech. Human Touch busca un AI Engineer para diseñar y desarrollar soluciones de IA generativa en un entorno híbrido. Con al menos 3 años de experiencia, serás clave en la construcción de sistemas eficientes y en la implementación de tecnologías avanzadas para negocios. Ofrecemos proyectos d ...

Remote Senior Software Engineer AI Training Data & Code

Kake is seeking a Senior Software Engineer in Galicia, Spain, to contribute to AI training data development. The role will bridge software engineering and artificial intelligence, aiming to help develop advanced models for AI systems. Qualified candidates must have over 5 years of experience and strong ...

Senior Angular Frontend Engineer — AI‑Driven UI, Remote

Idealista is seeking a Frontend Developer skilled in Angular and AI technologies to work 100% remotely. The successful candidate will collaborate closely with clients’ IT and business stakeholders, delivering modern frontend applications that enhance user experiences. This role requires strong skills i ...

Data & ML Engineer Build Scalable AI Pipelines (Remote)

Tui Group is seeking a Data & ML Engineer to join the Musement Data Science & Analytics Team in Madrid. You'll develop and maintain cutting-edge data and ML solutions, collaborating with Data Scientists and Engineers to drive business value for millions of travellers. This role requires proficiency in ...

Lead Full Stack AI Engineer (LLMs, Hybrid/Remote)

Econocom busca un/a Lead Software Engineer (Full-Stack) con sólida experiencia en IA Generativa y desarrollo de aplicaciones. En este rol, dirigirás un equipo de ingeniería AI, colaborando con Product Managers para crear soluciones escalables para clientes B2B. El candidato ideal tendrá experiencia en ...

Senior Frontend Engineer Angular + AI Tools | 100% Remote

Ust is seeking a Frontend Developer experienced in Angular and AI to join their team in Spain, particularly in Antas de Ulla. In this 100% remote role, you will develop modern frontend applications while collaborating closely with business stakeholders to deliver exceptional user experiences. Your role ...

Senior AI & Data Systems Engineer Remote & Flexible Hours

Biome Makers, based in Madrid, is seeking a Senior AI & Data Systems Engineer who will design and deploy robust AI/ML pipelines focused on Generative AI. The candidate will lead architectural transitions and collaborate with product teams to enhance dashboard metrics. Ideal candidates possess 5+ years of soft ...

Software Engineer Ai Assisted Development | 100% Remote (Lugo)

At ASTEK Iberia, we are looking for a highly skilled Software Engineer specialized in AI-assisted development to lead the adoption of modern AI coding practices across our engineering teams. This is a unique hybrid role combining hands-on development, coaching, and governance, where you will shape h ...

Anthropic Certified AI Engineer — Remote Backend & Client Impact

Provectus in Madrid is looking for a Senior Technical Engineer to design and build production-grade AI systems. The ideal candidate will have a valid Anthropic certification and strong skills in Python and AWS services. This role includes owning backend services, engaging directly with clients, and bei ...

Remote Celonis Process Mining Engineer with SAP & AI

Shakers, ubicada en Vigo, España, busca un/a Process Mining Engineer para desarrollar soluciones en Celonis EMS. El rol es 100% remoto y se enfoca en optimizar procesos y asegurar la información financiera de la multinacional. Los candidatos deben tener experiencia en SAP y habilidades en SQL, Python y ...

Senior AI Platform Engineer — Remote Freelance, Long Term

Aderen is seeking a Senior AI/Platform Engineer with expertise in the Databricks Mosaic AI platform. This role involves engaging with project delivery teams to build architecture recommendations and productize Mosaic AI into a governed platform. The ideal candidate will have deep expertise in autonomou ...

Android Engineer — Remote, Scale an Emotional AI App

Replika, located in Madrid, is seeking an experienced Android Engineer to help design and scale innovative systems powering its emotional AI. You'll engage in developing features that enhance user experience, aiming to eliminate bottlenecks and optimize performance. This role values creativity and coll ...

Remote Full Stack AI Engineer—Generative on Azure

MDW is seeking a Full Stack Developer to create cloud-native applications and integrate Generative AI technologies. This remote role requires 3+ years of experience in backend development with Python, modern frontend frameworks, and Azure. Successful candidates will collaborate in a dynamic environment ...

Backend Engineer Python – Real Time AI & APIs (Remote)

Talent busca un Backend Engineer en Palma, Islas Baleares, que desarrolle soluciones eficientes y escalables en Python para gestionar el viaje hipotecario. El trabajo es 100% remoto, con horario intensivo de 35 horas semanales. Los beneficios incluyen un entorno creativo y joven, donde se valora el dis ...

Senior Generative Ai Engineer Remote & Flexible Hours Madrid

Ayesa Digital busca un/a Ingeniero/a Senior en Inteligencia Artificial Generativa para unirse a su equipo en Lugo, España. Este rol implica desarrollar soluciones innovadoras utilizando Python y trabajando con LLMs y diversos frameworks. Entre los ventajas se incluyen flexibilidad horaria, retribuci ...

Senior DevOps Engineer Remote | GitHub Actions & AI SDLC

Lognext busca un/a DevOps / SRE Engineer con experiencia en CI/CD y migraciones a GitHub para unirse a un proyecto estratégico en Valencia. Los candidatos deben tener habilidades en Kubernetes, AWS y Ansible, y se valora experiencia en la integración de IA en SDLC. La posición ofrece un contrato fijo, ...

Senior Python Backend Engineer Data & AI (Remote Spain)

Searchability® is looking for a Senior Backend Engineer (Python / Data) to build data and ML-powered backend systems for a major global airline. This remote role allows flexibility across Spain with occasional travel to London. The ideal candidate will have 8+ years of backend development experience, strong P ...

Senior AI Assisted Software Engineer & Tech Mentor Remote

Davidson Consulting en España busca un experto en desarrollo asistido por IA con experiencia en programación y liderazgo técnico. Se ofrecen condiciones de trabajo remotas y un entorno estable. Buscamos a alguien con entre 5 y 10 años de experiencia en ingeniería de software, capaz de formar y guiar a otros i ...

Software Engineer AI Assisted Development | 100% Remote (Arbo)

Responsibilities Define and standardize best practices for AI‑assisted coding Create playbooks, prompt libraries, and reusable patterns Promote responsible AI usage with strong human validation Partner with teams to build their first AI‑assisted applications <l ...

GenAI Ops Engineer Remote AI Infra & CI/CD

Sartorius is seeking a GenAI Ops Engineer for their IT Software Development & Innovations department. In this full-time position, you will manage and deploy AI resources, ensuring efficient CI/CD pipelines and implementing DevOps best practices. This role offers flexibility with the option to work remotely or ...

Remote AI Driven QA Automation Engineer (Vitoria Gasteiz)

Overview Docusketch is looking for a QA Automation Engineer to join their remote team based in Spain. In this role, you will design and implement automation frameworks, ensuring high-quality delivery of software and collaborating with cross-functional teams. Qualifications 5-6 ...

Software Engineer AI Assisted Development | 100% Remote (Madrid)

Job Overview We are looking for a Software Engineer specialized in AI‑assisted development to lead adoption of modern AI coding practices across our engineering teams within a large‑scale consumer healthcare organization. Responsibilities Define and standardize best practices ...

Senior Angular Frontend Engineer with AI Tools Remote

Ust, a multinational company in Santiago de Compostela, is seeking a skilled Frontend Developer with strong experience in Angular and AI tools. You will collaborate closely with cross-functional teams to develop high-quality user experiences. The position is fully remote and offers various benefits, in ...

Ai Full Stack Engineer Flexible/Remote Barcelona (Les)

Descripción de la posición En Ioon estamos convencidos de que la tecnología será el eje de la transformación de nuestras vidas. ¿Es usted el candidato adecuado para esta oportunidad? Asegúrese de leer la descripción completa a continuación. ¿Te animas a ser parte de esta revolución? Te proponemos ...

AI Driven Spend Platform Engineer (Hybrid: Remote/Onsite)

Spendesk is seeking a talented Software Engineer in Barcelona, Spain, to help shape the future of spend management. You will develop and maintain systems, using cutting-edge technologies and AI tools. The ideal candidate has over 2 years of software development experience, a proven track record, and a ...

Remote Ready AI/LLM Senior Full Stack Engineer

Babel Profiles busca un Ingeniero Full Stack Senior en Ceuta, España, para desarrollar y escalar las funcionalidades del núcleo en el sector Legal Tech. Se requiere experiencia en desarrollo backend en Python y un sólido conocimiento en Javascript/TypeScript. El candidato ideal tendrá más de 7 años de ...

Remote AI/LLM Senior Full Stack Engineer (Python)

Babel Profiles, based in Vitoria, Spain, is seeking a Senior Full Stack Engineer to design robust backend services using Python while collaborating on frontend technologies like React or TypeScript. This position promises a dynamic work environment where AI integration and real-world impact in the lega ...

AI Research Engineer (MultiModal & Vision) 100% Remote Worldwide

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 payment processors and ATMs—to seamlessly integrate reser ...

Senior Full Stack Engineer: Python + AI Backend (Remote)

Babel Profiles is seeking a Senior Full Stack Engineer located in Cedeira, Galicia, to join a leading company in the Legal Tech Sector. In this role, you'll design and implement robust backend services primarily with Python. Your work will encompass frontend technologies and collaboration across teams ...

Senior AI/LLM Full‑Stack Engineer (Python) — Remote

Babel Profiles busca un Senior Full Stack Engineer en Paradela para desarrollar e integrar arquitecturas backend utilizando Python y Flask, mientras gestiona la colaboración end-to-end con equipos de diseño y frontend. Buscamos candidatos con más de 7 años de experiencia, conocimientos en LLMs, y un en ...

Full Stack AI & Multi Cloud Platform Engineer (Remote)

Neotalent Conclusion, ubicada en La Línea de la Concepción, busca un/a Full Stack Developer para desarrollar una plataforma interna tipo Chat GPT utilizando tecnologías de IA generativa y entornos Multi-Cloud (Azure, AWS, GCP). El candidato ideal tendrá 3-5 años de experiencia y se encargará del ciclo ...

🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

To-Do Planner

Organize your job search and personal tasks. All data is confidential.

Open Planner

Wellbeing Center

Access your confidential wellness report and resources to manage job search stress.

Check Wellbeing

Skill Coach

Plan your skill development with O*NET support to stay competitive in your field.

Start Coaching

Outfit Helper

Get AI-powered suggestions on what to wear for your next interview.

Find Outfit

Income Tax Calculator

Plan your finances with our calculator, updated for 2025 tax regulations.

Calculate Tax

Salary Benchmark

Get accurate, AI-supported salary trends to know your worth and negotiate better.

Check Salaries

Interview Practice

Practice for any interview with AI-enabled Q&A sessions. All data is private.

Start Practicing

Interview Predictor

Use our AI-supported tool to predict potential interview questions based on your resume.

Predict Questions

Interview Practice Timer

Use our mock interview trainer to perfect your answers under timed conditions.

Start Timer

Behavioral Mastery

Ace tricky behavioral interviews with our AI-powered practice module.

Master Answers

Question Journal

Confidentially record interview questions you were asked for future reference.

Open Journal

Interview Ace

A comprehensive tool to help you master every aspect of your interviews.

Become an Ace

Q&A Logs

Confidentially track your answers to common questions and refine them over time.

View Logs

Application Planner

Schedule and organize your job applications in one confidential planner.

Open Planner

Cover Letter Tool

Create perfect, tailored cover letters for each application with AI support.

Generate Letter

Resume Score

Get instant feedback on your resume with our NLP-supported analysis tool.

Check My Score

ATS Score

Check your resume's compatibility with Applicant Tracking Systems (ATS).

Check ATS Score

Application Analyzer

Use AI to analyze job descriptions and optimize your application materials.

Analyze Application

Career Visualizer

Confidentially plan and visualize your long-term career path and goals.

Visualize My Career

Offer Genius

Get intelligent insights and strategies to confidently negotiate job offers.

Negotiate Offers

JobFlow

Track your entire job search progress from application to offer with this intelligent tool.

Track My Flow

JobSense

Our intelligent matching engine that provides smart job recommendations.

Get Smart Matches

Networking Toolkit

Tools to build and manage your professional connections. All data is confidential.

Build Network

Professional CV

A classic, O*NET supported template for corporate and professional roles.

Use This Template

Executive CV

A premium, O*NET supported template designed for senior and C-level positions.

Use This Template

Modern CV

A fresh, stylish, O*NET supported template perfect for tech and modern industries.

Use This Template

Creative CV

A visually distinct, O*NET supported template for design and artistic roles.

Use This Template

Minimalist CV

A clean, simple, O*NET supported template that focuses purely on content.

Use This Template

Europass CV

The standard European Union recommended format for wide compatibility.

Use This Template

Student CV

An institution-recommended template perfect for internships and first jobs.

Use This Template

Graduate CV

An institution-recommended template for recent graduates entering the workforce.

Use This Template

Academic CV

The researcher-recommended format for roles in academia and research.

Use This Template

Developer/IT CV

A tech-savvy recommended template to highlight your technical skills.

Use This Template

Skilled Worker CV

A trades-recommended template to showcase hands-on skills and experience.

Use This Template

Monochrome CV

A sleek, black-and-white, O*NET supported template for a professional look.

Use This Template

Art CV

An artist-recommended template that allows your creativity to shine.

Use This Template

Harvard CV

A researcher-recommended template based on the classic Harvard format.

Use This Template

Volunteer Research

Help us improve our platform by joining our community research program.

Join Research

Review Us

Share your experience with our tools to help other job seekers.

Share Experience

Register

Create your free account to save jobs, build your profile, and track applications.

Create Account

Login

Access your dashboard, manage applications, and continue your job search.

Access Your Account

Profile Builder

Create a comprehensive professional profile that attracts recruiters and showcases your skills.

Build Your Profile

View Profile

See your public profile exactly as employers will see it. Make sure it's perfect.

Preview Profile

Bookmarked Jobs

Keep track of all your saved job opportunities in one organized place.

View Saved Jobs

Your Reviews

View and manage all the company reviews you've submitted.

See Your Reviews

Following

Manage the list of companies you follow to stay updated on their new openings.

Manage Following

Find Companies

Discover and research top employers in your country and industry.

Discover Employers

Standalone CV Builder

Use our O*NET supported CV builder to create a professional resume from scratch.

Build Your CV

PDF to DOC (Beta)

Convert your PDF resumes or documents into editable Word (DOC) format.

Convert PDF

DOC to PDF (Beta)

Create universally compatible PDF documents from your Word (DOC) files.

Create PDF

General FAQ

Find answers to common questions about our job site and platform.

Read FAQ

Job Seekers FAQ

Get help and find answers to questions specifically for job seekers.

Get Help

Job Matching

Learn about the technology and algorithms behind how we match you to jobs.

Learn How

Personalized Matching

Discover how we use your profile and activity to provide customized job suggestions.

Learn More

Quick Apply

Understand our fast application process and how to make the most of it.

Learn More

Alert Frequency

Learn how to manage your job alert settings so you get the updates you want.

Manage Settings

Job Alerts Guide

A complete guide to understanding how job alerts work and how to use them effectively.

Read Guide

Resume Matching

Learn how our system matches your resume to job requirements.

Learn More

Ethical Branding

Read our guide to building a professional and ethical personal brand.

Read Guide

Candidate Visibility

Learn how to increase your visibility to recruiters on our platform.

Increase Visibility

Verified Badge

Find out how you can get a verified badge to build trust with employers.

Get Verified

AI ATS Technology

Learn about the advanced AI and ATS technology that powers our platform.

Learn More

ATS Ranking

Understand how Applicant Tracking Systems rank you as an applicant.

Learn More

Semantic Matching

Learn how our AI-powered semantic matching goes beyond keywords.

Learn More

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