42,198+ Staff Engineer Python React Ai Start Up Jobs in Madrid, Spain — Local Employers Hiring June 2026

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Staff Engineer Python React AI Start up

Staff Engineer / Developer (Python React Full Stack) Madrid onsite to €110,000Are you a technologist with a range of skills across the full stack?You could be progressing your career in an impactful, hands-on Staff Engineer role for a tech start-up backed by a hugely profitable Private Eq ...

Staff React Engineer (Typescript + Ai Experience)

Key ResponsibilitiesAumente sus posibilidades de llegar a la fase de entrevista leyendo la descripción completa del puesto y enviando su solicitud sin demora.Lead the architecture, design, and development of scalable, high-performance web applications using React and TypeScript.Define and execu ...

Staff React Engineer (TypeScript + AI Experience)

Key Responsibilities Lead the architecture, design, and development of scalable, high-performance web applications using React and TypeScript. Define and execute the front-end technical strategy, ensuring scalability, performance, and alignment with product and AI goals. <li ...

Staff React Engineer (TypeScript + AI Experience), Madrid

Staff React Engineer (TypeScript + AI Experience)Staff React Engineer (TypeScript + AI Experience) We are: Wizeline, a global AI-native technology solutions provider, develops cutting-edge, AI-powered digital products and platforms. We partner with clients to leverage data and AI, accelerat ...

Staff Ai Engineer

Staff/Principal Engineer¿Todo listo para enviar su solicitud? Por favor, lea la descripción al menos una vez antes de hacer clic en Solicitar.As a technical leader, you will drive the architecture, design, and implementation of backend and frontend systems, focusing on scalable, secure, and perform ...

Staff AI Engineer

About The Role We are looking for a Staff AI Engineer who thrives at the intersection of rapid experimentation and agile product development. In this role, you will be the bridge between the latest AI developments and tangible product impact. You aren’t just following a roadmap; you are h ...

Staff AI Engineer

Staff/Principal Engineer As a technical leader, you will drive the architecture, design, and implementation of backend and frontend systems, focusing on scalable, secure, and performant solutions across the stack. Your role includes leading cross‑functional teams, integrating AI agents, and champ ...

Staff Ai Engineer

About The RoleTodos los posibles candidatos deben leer con atención los siguientes detalles de este trabajo antes de presentar una candidatura.We are looking for aStaff AI Engineerwho thrives at the intersection of rapid experimentation and agile product development. In this role, you wil ...

Software Engineer – React & Python

Direct message the job poster from CapitoleHabilidades, experiencia, cualificaciones... Si tiene el perfil adecuado para esta oportunidad, asegúrese de inscribirse hoy mismo.Capitole is celebrating 10 years!We are now+1,000people building an environment where talent is nurtured, rec ...

Remote Study Start Up Lead

A clinical research organization is seeking a Study Start Up Lead to manage the study start-up process across multiple countries, including Spain.Desplácese hacia abajo para ver todos los requisitos del puesto y las responsabilidades que pueden esperar los candidatos seleccionados.This individual wil ...

Full Stack AI Engineer: Python & React Web Apps

UST in Madrid is seeking a Full Stack AI Engineer with expertise in Python and React. The role involves building AI-driven web applications and collaborating with cross-functional teams. Ideal candidates will have a strong background in full-stack development, API design, and database management. UST offers 23 d ...

Senior Ai & Rag Fullstack Engineer Python/react Madrid

Descripción del puesto Extia busca un Senior Fullstack Developer en Madrid para un proyecto original. El candidato adecuado tendrá experiencia en Python y React, y debe ser capaz de desarrollar aplicaciones potenciadas por IA. El trabajo es híbrido, con visitas ocasionales a la oficina en Cornellà ...

Full Stack Ai Engineer: Python & React Web Apps

UST in Madrid is seeking a Full Stack AI Engineer with expertise in Python and React.La siguiente información tiene como objetivo proporcionar a los posibles candidatos una mejor comprensión de los requisitos para este puesto.The role involves building AI-driven web applications and collaborating wit ...

Founding Python/React Full Stack Engineer (AI) – Madrid

Founding Software Engineer / Developer (Python React Full Stack) Madrid onsite to €85,000 Are you a technologist with a range of skills across the full stack? You could be progressing your career in an impactful, hands-on Founding Software Engineer role for a successful ...

Global Mechanical & Process Engineer: Design to Start Up

ARANER, a leading international engineering company, is seeking a Mechanical or Process Engineer to join their dynamic team in Madrid. This role is pivotal in developing engineering processes including design, procurement, and construction of industrial facilities. The ideal candidate holds a degree in ...

Global Mechanical & Process Engineer: Design To Start Up

ARANER, a leading international engineering company, is seeking a Mechanical or Process Engineer to join their dynamic team in Madrid. This role is pivotal in developing engineering processes including design, procurement, and construction of industrial facilities.Por favor, presente su candidatura sin dem ...

Staff AI Software Engineer

Aircall is a unicorn, AI‑powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer‑facing teams. We’re redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace. Our ...

Staff Ai Software Engineer

Aircall is a unicorn, AI‑powered customer communications platform used by 22,000+ companies worldwide to drive revenue, resolve issues faster, and scale customer‑facing teams. We’re redefining customer communications by bringing voice, SMS, WhatsApp, and AI together into one seamless workspace.Si los sigui ...

Staff AI Engineer Notebooks

We're looking for a Staff Software Engineer with deep experience in AI/ML to join the Notebooks team. The company Notebooks provide a flexible tool for ad-hoc data analysis, collaborative investigations, and technical documentation. Its fluidity makes it an ideal surface for agents and humans to interact. ...

Python AI Engineer

Who are we? We are part of the Alkemy Group, specializing in driving growth through our technological expertise, tackling complex challenges, and fostering operational excellence. We are digital natives and technology-neutral thanks to our rapid adaptation capabilities and problem-s ...

Python AI Engineer

Who are we?We are part of the Alkemy Group, specializing in driving growth through our technological expertise, tackling complex challenges, and fostering operational excellence.We are digital natives and technology-neutral thanks to our rapid adaptation capab ...

Python Ai Engineer

NTT DATASi desea saber un poco más sobre esta oportunidad, o está considerando presentar su candidatura, por favor, lea la siguiente información del puesto.es una consultora multinacional que ofrece soluciones tecnológicas, de negocio, estrategia, desarrollo y mantenimiento de aplicaciones, siendo un ...

Remote Fullstack Dev: Python, React & AI

Tamarind Intelligence busca un Fullstack Developer Python con experiencia en React e Inteligencia Artificial para unirse a su equipo de desarrollo. El puesto es totalmente remoto y se enfoca en el desarrollo de aplicaciones completas, desde el frontend hasta el backend. Los candidatos deben tener auton ...

Remote Fullstack Dev: Python, React & AI

Tamarind Intelligence busca un Fullstack Developer Python con experiencia en React e Inteligencia Artificial para unirse a su equipo de desarrollo. El puesto es totalmente remoto y se enfoca en el desarrollo de aplicaciones completas, desde el frontend hasta el backend. Los candidatos deben tener auton ...

Clinical Project Coordinator: Start Up & Operations

CTI Clinical Trial and Consulting Services is hiring a Clinical Project Coordinator in Madrid. This role involves supporting the Clinical Project Manager in various project management activities and ensuring smooth operational workflows within clinical trials. xhfqzwm Es esencial asegurarse de que cumple c ...

Trainee Project Coordinator – Madrid Start Up

Winche Redes Comerciales busca un/una Trainee para unirse a su Equipo de Coordinación en Madrid. La posición ofrece prácticas empresariales remuneradas con oportunidades para convertirse en un puesto fijo tras 6-12 meses.Haga clic en Solicitar a continuación para enviar su candidatura. Asegúrese de que s ...

Regulatory Submissions (Study Start Up) Coordinator

Our clinical operations activities are growing rapidly, and we are currently seeking a Regulatory Submissions Coordinator to join our Clinical Operations team in Spain. This position plays a key role in the clinical trial management process at Medpace.Las cualificaciones, habilidades y toda la experiencia ...

Clinical Project Coordinator: Start Up & Operations

CTI Clinical Trial and Consulting Services is hiring a Clinical Project Coordinator in Madrid. This role involves supporting the Clinical Project Manager in various project management activities and ensuring smooth operational workflows within clinical trials. Ideal candidates will hold a Bachelor's de ...

Regulatory Submissions (Study Start Up) Coordinator

Our clinical operations activities are growing rapidly, and we are currently seeking a Regulatory Submissions Coordinator to join our Clinical Operations team in Spain. This position plays a key role in the clinical trial management process at Medpace. Please note that this is an office‑based position i ...

Trainee Project Coordinator – Madrid Start Up

Winche Redes Comerciales busca un/una Trainee para unirse a su Equipo de Coordinación en Madrid. La posición ofrece prácticas empresariales remuneradas con oportunidades para convertirse en un puesto fijo tras 6-12 meses. Los candidatos seleccionados liderarán equipos comerciales, gestionarán relacione ...

Senior AI & RAG Fullstack Engineer (Python/React) – Hybrid Madrid

Extia busca un Senior Fullstack Developer en Madrid para un interesante proyecto que involucra IA. El candidato será responsable de desarrollar aplicaciones utilizando Python y React. Este puesto requiere un buen nivel de inglés, experiencia en arquitecturas RAG y Cloud, así como la capacidad de trabaj ...

Senior AI & RAG Fullstack Engineer (Python/React) – Hybrid Madrid

Extia busca un Senior Fullstack Developer en Madrid para un interesante proyecto que involucra IA. El candidato será responsable de desarrollar aplicaciones utilizando Python y React. Este puesto requiere un buen nivel de inglés, experiencia en arquitecturas RAG y Cloud, así como la capacidad de trabaj ...

Hybrid AI Full Stack Engineer: Java/Python | Spring+React

3530 Kyndryl España is seeking a Full Stack Developer for their AI Agentic Innovation Hub. You will play a pivotal role in building and maintaining web applications supporting global AI solutions across the entire technology stack. Adequate candidates should have strong skills in Java and Python, 3 yea ...

Staff Python Engineer Remote Work | Ref285636

Join to apply for theSi cree que es el candidato ideal para la siguiente oportunidad, envíe su solicitud después de leer la descripción completa.Staff Python Engineer - Remote Work | REF# role atBairesDevAt BairesDev, we have been leading the way in technology projects for over 15 y ...

Python Software Engineer AI

Mercor Mercor is recruiting U.S./UK/Canada/Europe-based SWEs for a model-training project with a leading foundational model AI lab. Job Overview This is a contract role requiring around 20 hours per week, at least one month long, with pay of $100 per hour based on experience. Succe ...

Global Site Contracts Lead — Start Up Excellence

IQVIA in Madrid seeks an experienced Senior Site Contracts Associate to manage contract strategy and oversee start‑up contracting activities for various sponsors. This position involves ensuring operational excellence and may include line-management responsibilities.¿No sabe con seguridad qué habilidades n ...

Clinical Trial Contracts Specialist Start Up (Spain)

A global clinical research organization in Madrid is seeking a Clinical Trial Contract Specialist to manage contracts in the study startup and clinical trial management processes.¿No sabe con seguridad qué habilidades necesitará para esta oportunidad? Simplemente lea la descripción completa a continuación ...

Regulatory Start Up Lead European Clinical Trials

CTI Clinical Trial and Consulting Services is seeking a Regulatory Affairs role in Madrid, Spain.¿Listo para inscribirse? Antes de hacerlo, asegúrese de leer todos los detalles pertenecientes a este trabajo en la descripción a continuación.This position involves assisting project teams with regulator ...

Regulatory Start Up Lead European Clinical Trials

CTI Clinical Trial and Consulting Services is seeking a Regulatory Affairs role in Madrid, Spain. This position involves assisting project teams with regulatory requirements for clinical studies, ensuring compliance and quality of study documentation, and interacting with various stakeholders including sponsors ...

Remote Start Up Lead — Clinical Trials (EU)

Indero (formerly Innovaderm) is seeking a Start‑Up Manager to oversee the activation of clinical trial sites across multiple countries, including Spain. The role involves managing the end-to-end study start‑up process, ensuring regulatory compliance, and collaborating with cross-functional teams. Ideal candidate ...

Global Site Start Up Leader — Home Based

Parexel is seeking a Study Start-Up Leader based in Spain to oversee site activation for clinical trials. This home-based role involves ensuring compliance with sponsor SOPs and ICH/GCP, managing teams, and implementing effective site start-up strategies. The ideal candidate will possess a Bachelor deg ...

Strategic Associate Director, Ophthalmology Study Start Up

TFS HealthScience is seeking an Associate Director, Study Start Up, to manage country-level deliverables and timelines for clinical studies. This home-based role is essential in ensuring compliance and quality in study execution. The ideal candidate will have over 8 years of clinical research experienc ...

Clinical Trial Contracts Specialist Start Up (Spain)

A global clinical research organization in Madrid is seeking a Clinical Trial Contract Specialist to manage contracts in the study startup and clinical trial management processes. The ideal candidate should have a Bachelor's degree in Law or Sciences, strong attention to detail, and be fluent in both Spanish and ...

Site Start Up Specialist II — Madrid (Hybrid)

Syneos Health, Inc. is seeking a Site Activation Specialist II in Madrid to oversee quality deliverables at the country level, ensuring compliance with project requirements. This hybrid role requires monitoring timelines, financial aspects, and supporting continuous quality improvement in site start-up compon ...

Global Site Contracts Lead — Start up Excellence

IQVIA in Madrid seeks an experienced Senior Site Contracts Associate to manage contract strategy and oversee start‑up contracting activities for various sponsors. This position involves ensuring operational excellence and may include line-management responsibilities. The ideal candidate will possess st ...

Madrid Regulatory Submissions Coordinator – Study Start Up

A leading clinical contract research organization is seeking a Regulatory Submissions Coordinator in Madrid. This key role involves preparing and filing clinical trial applications, ensuring compliance with regulations, and advising on regulatory requirements. Candidates should have a Bachelor’s degree in Life S ...

Frontend Lead Engineer Hypergrowth Start Up €50.000 €65.000 Al Año

Líder técnico en desarrollo frontend, responsable de la estrategia tecnológica y la calidad de las interfaces, trabajando en un entorno híbrido y dinámico. ...

Assistant Manager Premium Retail, Start Up Growth

Una marca de retail premium en Madrid busca un/a Assistant Manager para unirse al equipo en su nueva tienda. El candidato ideal tiene experiencia previa en retail o atención al cliente, habilidades de comunicación excepcionales y una actitud proactiva. Las responsabilidades incluyen asesorar a clientes, contribu ...

Staff/Senior AI Engineer, AI for Code

At JetBrains, we build developer tools used by millions of engineers. The AI for Code team works on the next generation of coding agents and agentic workflows: systems that can understand codebases, plan and execute multi-step tasks, collaborate with developers, and ship reliable results inside real develo ...

Staff/Senior Ai Engineer, Ai For Code

At JetBrains, we build developer tools used by millions of engineers. The AI for Code team works on the next generation of coding agents and agentic workflows: systems that can understand codebases, plan and execute multi-step tasks, collaborate with developers, and ship reliable results inside real development ...

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    Staff Engineer Python React Ai Start Up Jobs in Madrid Job Search Guide, Trends and Insights