• Spain Jobs Expertini profile avatar

    • 123,011+ 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
    Explore Leading Employers
    High-Paying Careers
    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.

    1. Expertini
    2. Spain
    3. Jobs
    4. Remote Fullstack Engineer Java React Ai Api Builder Jobs in Spain

    5. Download PDF

    Reset

    Create Job Alert
      Add Alert

     
     
    Create Alert
     
    Reset

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barr ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Sobre nosotros Conversations beat CVs. Esa es la convicción detrás de Hirevoice. Nuestra IA entrevistadora da a cada candidato una oportunidad real de demostrar su valía y ofrece a los empleadores señales en las que realmente pueden confiar. Estamos construyendo algo más que un entrevistador: una plataforma de I ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. ¿Es usted el solicitante adecuado ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barr ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. ¿Es usted el solicitante adecuado ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Senior Platform Engineer €100.000 A Year Remote

    Seeking a senior, product-minded Platform Engineer to own the platform end-to-end, improving scalability, observability, and developer experience to help engineers ship faster and safer. Focus on AWS and cost optimization. ...

    Senior DevOps Engineer Fully Remote Job (Madrid)

    What You’ll Do As a Senior DevOps Engineer, you’ll own the design, reliability, and evolution of InteractiveAI’s production infrastructure, ensuring our platform is secure, scalable, observable, and fast to ship. You’ll guide a small, high‑impact team of DevOps/SRE engineers, raising standards for uptime, deploy ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Principal Hardware Engineer — Remote‑Flexible, High‑Reliability

    Mercury Systems is looking for a Principal Hardware Engineer in Getafe, Spain. In this role, you will lead the design of advanced electronic systems, ensuring compliance with industry standards and delivering high‑reliability products.You will be responsible for driving complex hardware designs and overseein ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barr ...

    Senior DevOps Engineer Fully Remote Job (Madrid)

    What You’ll Do As a Senior DevOps Engineer, you’ll own the design, reliability, and evolution of InteractiveAI’s production infrastructure, ensuring our platform is secure, scalable, observable, and fast to ship. You’ll guide a small, high‑impact team of DevOps/SRE engineers, raising standards for uptime, deploy ...

    Senior Software Engineer, Product A Year Remote

    Seeking a Senior Software Engineer, Product to design, build, and own end-to-end product features. Role involves working across frontend, backend, and data layers to deliver reliable, high-quality systems for developers and end-users. ...

    Staff Software Engineer Databases, Tempo | Spain | Remote

    Grafana Labs, the company behind the open observability cloud, is founded on the principles of open source, open standards, open ecosystems, and open culture. Grafana Cloud, our fully managed observability platform, is flexible and built for scale. With Grafana Cloud's actually useful AI, organizations can see, ...

    Senior DevOps Engineer Fully Remote Job (Madrid)

    What You’ll Do As a Senior DevOps Engineer, you’ll own the design, reliability, and evolution of InteractiveAI’s production infrastructure, ensuring our platform is secure, scalable, observable, and fast to ship. You’ll guide a small, high‑impact team of DevOps/SRE engineers, raising standards for uptime, deploy ...

    Founding engineer remote or barcelona [agentic coder]

    Conversations beat CVs. Desplácese hacia abajo para encontrar los detalles completos de la oferta de trabajo, incluyendo la experiencia requerida y las funciones y tareas asociadas. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and giv ...

    Remote Full Stack Engineer, SEO/GEO Analytics

    Constructor.io, based in Barcelona, is seeking an individual for their SEO/GEO team. The role involves enhancing integration systems, developing analytical tools, and improving dashboard experiences. Candidates should have a strong foundation in JavaScript and React, along with knowledge of SEO fundamentals. The ...

    Go Backend Cloud Native Engineer Full Remote

    ASSA ABLOY Global Solutions is part of the ASSA ABLOY Group, who are the global leader in access solutions . Every day, we reimagine how people move through a safer, more open world with ease . If you’ve ever walked through an automatic door, stayed in a hotel, or gone through passport control, you’ve probably u ...

    Senior DevOps Engineer Fully Remote Job (Madrid)

    What You’ll Do As a Senior DevOps Engineer, you’ll own the design, reliability, and evolution of InteractiveAI’s production infrastructure, ensuring our platform is secure, scalable, observable, and fast to ship. You’ll guide a small, high‑impact team of DevOps/SRE engineers, raising standards for uptime, deploy ...

    Remote Full Stack Engineer, SEO/GEO Analytics

    Constructor.io, based in Barcelona, is seeking an individual for their SEO/GEO team. The role involves enhancing integration systems, developing analytical tools, and improving dashboard experiences. Candidates should have a strong foundation in JavaScript and React, along with knowledge of SEO fundamentals. The ...

    Senior backend engineer (remote) scalable iot platform

    Hive MQ in Spain is seeking a skilled software engineer to architect and maintain their platform for global Io T deployments. Key responsibilities include developing high-quality, self-healing software, enhancing system scalability and availability, and utilizing modern tools like AI. Candidates should have at l ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barros (foun ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. ¿Es usted el solicitante adecuado ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barr ...

    Remote Full Stack Engineer, SEO/GEO Analytics

    Constructor.io, based in Barcelona, is seeking an individual for their SEO/GEO team. The role involves enhancing integration systems, developing analytical tools, and improving dashboard experiences. Candidates should have a strong foundation in JavaScript and React, along with knowledge of SEO fundamentals. The ...

    Founding Engineer Remote or Barcelona [agentic coder]

    Conversations beat CVs. That's the conviction behind Hirevoice. Our AI interviewer gives every candidate a real shot at showing how good they are — and gives employers signal they can actually trust. But we're building more than an interviewer: an enterprise AI platform. Co-founded by Nacho González-Barr ...

    Senior Spark Data Engineer Hybrid/Remote Spain

    Talan is looking for a Big Data Developer to join their team in Spain. The role involves developing and maintaining data processing solutions and ensuring data quality in a collaborative Agile environment. Candidates should have 3+ years in data engineering, strong SQL, and hands-on experience with Spa ...

    Remote Gameplay Engineer Unreal Engine 5 (C++)

    Devoted Studios is seeking a Gameplay Engineer who is deeply fluent in C++ and Unreal Engine 5, with a track record shipping AAA or mid‑tier titles. This is a remote, full‑time contractor position working with global teams across time zones. You will implement gameplay systems, GAS, and animation integ ...

    Senior Cost Control Engineer Remote & Flexible Schedule

    Tecnicas Reunidas in Madrid is seeking a Senior Cost Control Engineer to manage cost control, forecast expenditures, and report to the Cost Control Leader on project financial performance. You will lead the Cost Control Team, oversee monthly budget reporting, and identify risks and improvement opportunities i ...

    Remote Staff .NET Engineer Cloud & Microservices Lead

    A leading tech solutions firm is seeking a Staff .NET Engineer to design and optimize enterprise applications.Asegúrese de presentar su candidatura con toda la información solicitada, tal como se expone en la descripción del puesto a continuación.The role is 100% remote, offering excellent compensation a ...

    Senior QA Engineer Automation & Quality (Remote Spain)

    A staffing and recruiting agency is seeking a Senior QA Engineer to deliver high-quality software in a remote environment in Spain.Todas las habilidades, cualificaciones y experiencia relevantes que necesitará un candidato seleccionado se enumeran en la siguiente descripción.The role involves manual and ...

    Remote Azure Infra Engineer (Mid) – Cloud Architect

    Multiplica busca un Azure Infrastructure Engineer (Mid) para colaborar en proyectos internacionales con una importante empresa del sector FMCG.A continuación, encontrará un desglose completo de todo lo que se requiere de los posibles candidatos, así como la forma de presentar su candidatura. ¡Mucha suerte ...

    Senior Amazon Connect Engineer — Remote, APIs & DynamoDB

    Miratech is seeking a Senior Amazon Connect Engineer in Barcelona to design and maintain integrations for AWS-based contact center solutions.La información a continuación detalla los requisitos del puesto, la experiencia esperada del candidato y las cualificaciones correspondientes.The ideal candidate ...

    Senior Python Full Stack Engineer Remote & Flexible

    BairesDev is seeking a Senior Full-Stack Developer (Python) to lead application design and implementation.Todos los candidatos deben asegurarse de leer atentamente la siguiente descripción del puesto y la información antes de enviar su solicitud.The successful candidate will work remotely, optimizing RES ...

    Senior Full Stack Engineer — Remote + Flexible Hours

    Israelvcforum está buscando un/a Desarrollador/a Full Stack que participe en el desarrollo y mantenimiento de aplicaciones tanto en el frontend como en el backend.La experiencia que se espera de los solicitantes, así como las habilidades y cualificaciones adicionales necesarias para este trabajo, se enume ...

    PPC Engineer Renewable Energy | Remote & Flexible Hours

    Isotrol, a leader in Energy Market Trading Software Solutions, seeks a PPC Engineer in Sevilla.Inscríbase ahora, lea los detalles del trabajo desplazándose hacia abajo. Verifique que posee las habilidades necesarias antes de enviar una solicitud.This role requires managing SCADA integrations for renewabl ...

    Full Stack Data & Process Engineer (Hybrid/Remote)

    CAE is seeking a Data and Process Engineer to join their growing team in Valencia, Spain.Aumente sus posibilidades de llegar a la fase de entrevista leyendo la descripción completa del puesto y enviando su solicitud sin demora.This role involves designing and maintaining web applications, data integratio ...

    Senior Data & Analytics Engineer (Europe, 100% remote)

    Join our fully remote, mission-driven team dedicated to pioneering sustainable inflight service management. Work on innovative technology solutions with global impact, collaborate within a diverse, international environment, and continuously enhance your skills through ongoing learn ...

    Remote QA Engineer Quality at Speed & Automation

    is seeking a Remote QA Engineer to enhance quality assurance practices.La siguiente información ofrece un resumen de las habilidades, cualidades y cualificaciones necesarias para este puesto.The ideal candidate will have over 2 years of experience in QA, with a strong emphasis on automation and manua ...

    🚀 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 →

    💡 Tools that really enhance your application chances and career growth.

    Go to Your Dashboard →

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