169,506+ Remote Fullstack Dev Java Angular Ai Tools Jobs in Spain — Top Companies Hiring June 2026

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Remote AI Agent Developer – GenAI & LLM Apps

Una empresa en el sector tecnológico busca un/a AI AGENT DEVELOPER para desarrollar e integrar agentes de IA que mejoren procesos bancarios. Se requiere un alto nivel de inglés y residir en España. El candidato ideal tendrá sólidos conocimientos de Python y GenAI. Ofrecemos contrato indefinido, retribución flexi ...

Senior Financial Analyst AI Finance Research (Remote)

A leading foundational AI lab is seeking experienced financial and investment analysts to train an AI model. Candidates should have over 5 years of experience at top investment firms, banks, or corporate finance teams. Key responsibilities include creating and evaluating financial models, conducting valuations, ...

Remote Lead AI Engineer GenAI & LLM Systems

A leading AI solutions provider is seeking a seasoned Lead AI Engineer to design and deploy advanced AI systems. This fully remote role involves leading technical AI projects and mentoring junior engineers. The ideal candidate will have over 5 years of experience in AI/ML engineering, strong Python skills, and h ...

Remote Freelance Generative AI Red Team Specialist

A leading security firm in Spain seeks a Security Red Team Specialist specializing in Generative AI Models. You will conduct assessments and testing to enhance AI security, focusing on identifying vulnerabilities and providing improvement strategies. The ideal candidate has at least five years of experience in w ...

Staff Software Engineer – AI Systems (Remote, Spain)

A leading communication technology provider is seeking a Staff Software Engineer to design AI-powered features in Spain. You'll lead software design and development, mentor junior engineers, and implement scalable architectures. The ideal candidate has over 8 years of experience in building distributed systems a ...

Remote NLP Data Annotator for AI Training

A global consulting firm is seeking a detail-oriented NLP Data Annotator to enhance Natural Language Processing systems. This remote role involves labeling and classifying text and speech data, ensuring high accuracy and consistency while meeting productivity targets. Candidates should have a Bachelor’s degree i ...

Remote Czech Voice Actor for AI Training

A leading AI technology company is seeking a skilled Czech Voice Actor for a freelance project. The role involves recording scripted material, evaluating AI outputs for accuracy, and offering feedback on various aspects of voice performance. A strong background in voice acting with a reliable recording setup is ...

Senior Platform Engineer — Remote Azure AI Infra

Una empresa de consultoría tecnológica busca un Ingeniero de Plataforma Senior para diseñar y gestionar la infraestructura en la nube de una plataforma de IA empresarial. Se requiere al menos 6 años de experiencia, con sólida formación en Microsoft Azure y Python. La posición es 100% remota, ofreciendo un ambien ...

AI Powered GTM Lead Gen Architect (Remote)

Synmatch AI is looking for a GTM Data Specialist to revolutionize B2B lead generation using AI and automation. This role involves building and optimizing lead generation systems in a fully remote environment. The ideal candidate will possess experience with advanced lead generation tools like Clay and TexAu, and ...

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 ...

Head of Product (AI Product) Full remote

Overview Social Discovery Group (SDG) is the 3rd largest social discovery company in the world, uniting 60+ brands with 500 million users. We solve the problems of loneliness, isolation, and disconnection by transforming virtual intimacy into the new normal. Our portfolio includes online communic ...

AI Innovation Architect: Lidera IA Transformadora (Remote)

Una empresa líder en IA y análisis de datos busca un/a arquitecto/a de innovación en IA para diseñar soluciones disruptivas y liderar proyectos innovadores. Se requiere un mínimo de 7 años de experiencia en el campo y un fuerte conocimiento en IA generativa. Ofrecemos un ambiente internacional y la posibilidad d ...

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, ...

Tech Lead: Modernize Legacy Systems & AI (Remote)

A leading technology company in Spain is seeking a Senior Tech Lead to drive modernization efforts and lead the engineering team. The role requires proven experience in modernizing legacy systems, as well as solid backend architecture skills in stacks like .NET or Python. Candidates must be fluent in English and ...

Software Developer for Training AI Data Remote

Software Developer for Training AI Data — Remote Immediate opportunity – Tool Use Sprint starting this week! We have a major project launching THIS WEEK with opportunities for 1000+ developers. The initial Tool Use sprint will run for 10 days, focusing on training AI models to use tools and APIs ...

Remote Bengali Coding Specialist AI Trainer (Freelance)

Are you a coding expert fluent in Bengali eager to shape the future of AI? Large-scale language models are evolving from clever chatbots into powerful engines of scientific discovery. With high-quality training data, tomorrow’s AI can democratize world-class education, keep pace with cutting-edge research, an ...

Remote Spanish AI Trainer (LatAm) – Entry Level

A technology company is looking for a Spanish Language Specialist (Latin America) to engage with AI models. The role involves verifying linguistic accuracies and documenting errors, suited for those with a background in Spanish language or linguistics. Offers a flexible pay range of $6 to $65 per hour. Ideal for ...

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 ...

Remote Medical AI Trainer & Consultant (Part Time)

Get notified about new Pediatra jobs in Spain . Positions open for Fetal medicine research fellows to join a research line based on the development of an experimental model of artificial placenta. Barcelona, Catalonia, Spain 10 months ago Bilbao, Basque Country, Spain 2 ...

Voice AI Engineer — Real Time, Scalable, Remote

Tucuvi is the global leader in clinical Conversational AI in healthcare .Our mission is to enable efficient and effective care for all, starting with AI-led phone consultations that augment care teams' capacity . Our safe and medical-grade AI autonomously conducts low-ris ...

Remote AppSec Engineer — AI Driven SaaS Security

A global leader in enterprise orchestration is seeking a highly accomplished Security Engineer - AppSec to work remotely, ideally from Spain. The role focuses on embedding security in the software development lifecycle and requires strong experience in cybersecurity and software engineering. Ideal candidates wil ...

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 ...

Senior Go Engineer – AI, Product Driven, Remote

A travel innovation company is seeking a Senior Software Engineer to design scalable backend systems for their AI automation platform. The role involves collaborating directly with customers, driving product decisions, and ensuring that engineering excellence meets user needs. Candidates should have over 5 years ...

Remote Japanese AI Annotator & Trainer (Part Time)

A global online task provider is looking for an annotator in Spain to review and label Japanese-language content. You will classify data, identify inaccuracies, and contribute to AI project quality. Qualifications include a Bachelor's degree and experience, with requirement of proficiency in Japanese and advance ...

Remote Physics Research Consultant: AI Problem Design

A leading education technology firm in Spain is seeking an expert to create original advanced physics problems and evaluate AI-generated solutions. The ideal candidate should hold a Master’s or PhD in physics or have equivalent experience in competitive physics. Strong LaTeX skills and a deep understanding of ph ...

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 Hindi Voice Acting & AI Training Specialist

A leading AI technology company is seeking a Hindi Voice Acting Specialist to enhance AI training data. This remote contract role requires fluency in Hindi and experience in voice acting. Responsibilities include recording material, evaluating AI outputs, and providing feedback on pronunciation. Candidates must ...

Remote Pashto Language Specialist for AI Training

A leading AI training company seeks a Pashto Language Specialist - AI Trainer to enhance AI models with your linguistic expertise. This remote contract position demands proficiency in phonetics, morphology, syntax, and cultural nuances. You’ll be responsible for verifying accuracy in AI responses and documenting ...

Remote Mandarin Voice Artist & AI Training Specialist

A leading voice acting company is seeking a Mandarin Chinese Voice Acting Specialist – AI Trainer. This remote contract role involves recording and evaluating Mandarin speech samples to enhance AI voice models. Candidates should be fluent in Mandarin and have experience in voice acting. A quality recording setup ...

Senior Product Designer — AI SaaS (Remote Europe)

A forward-thinking tech company is seeking a Senior Product Designer to shape UX for their AI-powered platform. This role emphasizes collaboration, innovation, and creating intuitive interfaces. Candidates should have over 4 years of design experience, a strong portfolio, and expertise in tools like Figma. The p ...

Social Media Creative Designer — Remote & AI‑Driven

A mental health care organization is looking for a Creative & Social Media Designer to join their fully remote team. This entry-level role requires designing impactful visuals for social media and paid ads. The ideal candidate should possess strong design skills, a keen eye for trends, and be proficient in tools ...

Backend AI Agent Architect (LangChain/LangGraph) Remote

An international technology company is seeking an experienced Backend Developer with expertise in LangChain and LangGraph. The role involves designing AI Agents and optimizing backend functionalities in a fully remote environment. Ideal candidates should have a strong background in backend architecture and a pas ...

Creative Lead, Growth & AI Driven Campaigns (Remote)

A leading consultancy firm based in Spain seeks a Mid-Senior Creative Marketing Specialist to manage and optimize their creative processes. This role requires over 4 years of experience in performance marketing and requires proficiency in TikTok and Meta. The ideal candidate will collaborate with a dynamic team ...

Remote AI Coding Trainer — Fluent in Italian

A leading AI training company is seeking a Coding Specialist - AI Trainer fluent in Italian. This remote role involves interacting with advanced AI systems on software engineering tasks and ensuring the accuracy of coding and language. Ideal candidates will have a strong technical background, coding experience, ...

Remote Full Stack & AI Product Builder (Volunteer)

Overview I’m looking for motivated volunteers—frontend and backend developers, AI enthusiasts, designers, or anyone passionate about building innovative products. Join us to gain experience, collaborate, and help shape the future of AI-powered productivity. Roles Frontend Deve ...

Lead React Engineer – AI Web Apps (Remote)

A global technology solutions provider is seeking a Mid-Senior level engineer to develop secure, scalable enterprise applications. Candidates should have experience in building web-based technology products, a strong understanding of algorithms, and excellent communication skills in English. The role offers a fu ...

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 ...

Remote AI Annotator & Trainer — Part Time, Freelance

A leading AI development company seeks annotators for flexible, remote freelance projects involving the review and classification of data. Responsibilities include evaluating AI-generated content and ensuring factual accuracy. Candidates should possess a bachelor's degree and advanced English skills (C1 or highe ...

Data Platform Engineering Manager (Remote, AI First)

Yuno is looking for an experienced Engineering Manager to lead their data engineering team. This remote role involves managing and growing a team responsible for processing billions of payment events worldwide. The ideal candidate will have a strong technical background, experience in leading data teams, and a p ...

Senior Software Engineer – Remote AI & Cloud Native

A global learning company is seeking an Advanced Specialist Software Engineer to drive the technical direction of high-impact projects. In this role located in Spain, you will design complex software solutions and mentor team members on best practices. The ideal candidate has over 6 years of experience in softwa ...

Remote Python Data Scraping Engineer (AI Pilot)

Mindrift is seeking a Python Data Scraping Engineer to contribute to the Tendem project. In this part-time remote role, you'll manage data scraping tasks, ensuring high-quality extraction from various sources using established and innovative tools. Ideal candidates have at least 3 years of experience i ...

Lead Flutter & AI Mobile Architect (Remote Spain)

LABHOUSE is seeking an experienced Lead Mobile Developer to steer the development team in building innovative mobile applications. You will manage the entire product lifecycle, incorporating AI integration and collaborating with cross-functional teams. A strong background in Flutter and Dart is essential, alo ...

Remote Threat Intelligence Analyst for AI Training

Alignerr is seeking a Threat Intelligence Analyst (AI Training) to analyze and classify threat reports. The ideal candidate will bring 2+ years of experience in threat intelligence or SOC analysis. The role is fully remote with a commitment of 10-40 hours per week. You'll work closely with leading AI r ...

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 ...

Remote Chemistry Scientist for AI Problem Solving

Alignerr is seeking Chemistry Specialists (Masters and PhD holders) to design and solve advanced chemistry problems for AI training. This is a fully remote role meant for researchers, postdocs, and industry chemists. Applicants will work independently on real-world issues, ensuring scientific clarity and deep ...

Remote AI Engineering Researcher — Validate & Shape Models

GradBay is looking for Engineering PhD Researchers and Industry Experts to contribute to AI development by evaluating advanced models. Ideal candidates include PhD students and professionals from various engineering disciplines. This role is fully remote and allows for flexible working hours, accommoda ...

Senior ML Engineer: AI Reasoning & Training (Remote)

Alignerr is seeking a Senior Machine Learning Engineer to work remotely on cutting-edge AI projects. You'll author high-fidelity reasoning traces that enhance LLM capabilities and mentor others on quality assurance. The ideal candidate will deeply understand model behavior, capable of structuring compl ...

Remote AI Marketing Educator Contract Teaching Role

Alignerr is seeking an experienced Marketing Instructor to help shape AI's understanding of branding and consumer behavior. This fully remote role allows you to influence how AI systems learn about marketing strategies, evaluating AI-generated content for accuracy and pedagogical quality. Ideal candida ...

Remote SEO & Marketing Specialist: AI‑Powered Content

Persona is seeking a SEO & Marketing Specialist to support various marketing initiatives, including content creation, SEO, and email campaigns. This role is ideal for a skilled writer with a solid understanding of SEO and a comfort level with AI tools. The specialist will help with content optimization ...

Remote Spanish English AI Data Annotation Analyst

iMerit Scholars busca un Gen AI Data Annotation Analyst en España. Su responsabilidad será desarrollar conjuntos de datos de alta calidad para modelos de lenguaje. Se requiere habilidad en etiquetado de datos en texto, imagen y video, así como la capacidad de redactar contenido en español e inglés. Ofr ...

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