38,626+ Founding Fullstack Engineer Pythonreact Ai Growth Jobs in Madrid, Spain — Local Employers Hiring August 2026

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Founding Full Stack Engineer (Python/React) — AI & Growth

Client Server in Madrid is seeking a Founding Software Engineer to own architecture and development for a private equity-backed business.Consulte la descripción del puesto a continuación. Si confía en que tiene las habilidades y la experiencia adecuadas, envíe su solicitud hoy mismo.Focus on Python an ...

Founding Full Stack Engineer (Python/React) — Ai & Growth

Client Server in Madrid is seeking a Founding Software Engineer to own architecture and development for a private equity-backed business.Consulte la descripción del puesto a continuación. Si confía en que tiene las habilidades y la experiencia adecuadas, envíe su solicitud hoy mismo.Focus on Pytho ...

Fullstack AI Platform Engineer — Remote, Equity, Growth

A leading healthcare technology provider is looking for a software engineer to join their Ops AI Platform team.Aunque la experiencia profesional y las cualificaciones son clave para este puesto, asegúrese de comprobar si posee las habilidades interpersonales preferibles antes de solicitar, si se requieren.<b ...

Founding Senior Fullstack Engineer — Ai Driven Energy Saas €60.000 €80.000 A Year

A pioneering clean tech startup in Barcelona seeks a Senior Software Engineer to join their founding team. This role involves designing and building software to process massive amounts of project data, helping accelerate renewable energy solutions. Candidates should have a proven track record in scalable softwar ...

Founding Software Engineer Python React AI

Founding Software Engineer / Developer (Python React Full Stack) Madrid onsite to €110,000 ¿Todo listo para enviar su solicitud? Por favor, lea la descripción al menos una vez antes de hacer clic en Solicitar.Are you a technologist with a range of skills across the full stack? <br ...

Founding Software Engineer Python React Ai

Founding Software Engineer / Developer (Python React Full Stack) Madrid onsite to €110,000 ¿Todo listo para enviar su solicitud? Por favor, lea la descripción al menos una vez antes de hacer clic en Solicitar.Are you a technologist with a range of skills across the full stack? </p ...

Founding Software Engineer Python React AI

Founding Software 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 Founding Software Engineer role for a successful and growing Private ...

Senior Software Engineer Fullstack Founding Team €60.000 €80.000 A Year

☀️ Accelerating the Energy Transition, One Algorithm at a TimeTetraxAI is revolutionizing renewable energy infrastructure development, making it100x faster and 10x cheaperthrough a cutting-edge B2B SaaS powered by AI.Join our founding teamof exceptionally experienced entrepreneurs:Marta: ...

Senior AI Fullstack Engineer – Cloud Applications

HiveMQ’s Vision for this roleLa experiencia que se espera de los solicitantes, así como las habilidades y cualificaciones adicionales necesarias para este trabajo, se enumeran a continuación.We aren't just using AI to help us code; we are an AI-native engineering organization. Our next major milestone ...

Fullstack Engineer AI Powered Health Platform

A health tech company in Spain is seeking an experienced backend engineer to build scalable systems that drive growth and profitability.Descubra exactamente qué habilidades, experiencia y cualificaciones necesitará para tener éxito en este puesto antes de enviar su solicitud a continuación.The role focus ...

AI Driven TypeScript Fullstack Engineer – Hybrid

A tech company in Madrid is seeking a talented Software Engineer to join their Engineering team.Por favor, verifique que tiene el nivel de experiencia y las cualificaciones adecuadas leyendo la descripción completa de esta oportunidad a continuación.You'll design and develop features for their next-gener ...

Senior AI Fullstack Engineer Cloud Applications

HiveMQ’s Vision for this role We aren't just using AI to help us code; we are an AI-native engineering organization. Our next major milestone is architecting a swarm of autonomous coding bees – specialized agents designed to handle end-to-end feature delivery, from infra provisioning to sel ...

Fullstack Engineer Ai Powered Health Platform

A health tech company in Spain is seeking an experienced backend engineer to build scalable systems that drive growth and profitability.Descubra exactamente qué habilidades, experiencia y cualificaciones necesitará para tener éxito en este puesto antes de enviar su solicitud a continuación.The role f ...

Ai Driven Typescript Fullstack Engineer – Hybrid

A tech company in Madrid is seeking a talented Software Engineer to join their Engineering team.Por favor, verifique que tiene el nivel de experiencia y las cualificaciones adecuadas leyendo la descripción completa de esta oportunidad a continuación.You'll design and develop features for their next-g ...

Senior Fullstack AI Engineer: LLMs & AI Agents (Remote)

knowmad mood busca Ingeniero/a de Software Fullstack con especialización en IA Generativa y experiencia con LLMs, GraphRAG y datos empresariales.Siga leyendo para descubrir lo que necesitará para tener éxito en este puesto, incluyendo habilidades, cualificaciones y experiencia.Se valorará trabajo con ...

Senior Fullstack AI Engineer: LLMs & AI Agents (Remote)

knowmad mood busca Ingeniero/a de Software Fullstack con especialización en IA Generativa y experiencia con LLMs, GraphRAG y datos empresariales. Se valorará trabajo con Azure OpenAI, OpenAI, Bedrock, Gemini oAnthropic, y con entornos cloud-native. La posición es 100% remota con contrato indefinido y o ...

Senior Fullstack Ai Engineer: Llms & Ai Agents (Remote)

knowmad mood busca Ingeniero/a de Software Fullstack con especialización en IA Generativa y experiencia con LLMs, GraphRAG y datos empresariales.Siga leyendo para descubrir lo que necesitará para tener éxito en este puesto, incluyendo habilidades, cualificaciones y experiencia.Se valorará trabajo ...

FullStack Engineer

NN Digital Hub is a subsidiary company of Nationale Nederlanden Group located in Madrid, Spain. We deliver IT services and solutions for the different international Business Units from Nationale Nederlanden Group. ¿Está pensando en solicitar este empleo? No se demore, desplácese hacia ...

Fullstack Engineer

About the role¿Le interesa este puesto? Puede encontrar toda la información relevante en la descripción a continuación.Imagine this building the digital interfaces that power the operation of next generation UAV systems. In this role, you will contribute to the design, development and testing of softw ...

Fullstack Engineer

About the roleImagine building the digital interfaces that power the operation of next-generation UAV systems. In this role, you will contribute to the design, development, and testing of software systems that support everything from UAV production to real-world operational use. Your f ...

Fullstack Engineer

About the role¿Le interesa este puesto? Puede encontrar toda la información relevante en la descripción a continuación.Imagine this building the digital interfaces that power the operation of next generation UAV systems. In this role, you will contribute to the design, development and testing of s ...

Founding AI Engineer — Frontline, Full Stack & ML (French)

Jobtailor in Madrid seeks a French-speaking Full‑stack AI Engineer to collaborate with customers from onboarding to deployment.Descubra si esta oportunidad es adecuada para usted leyendo toda la información que sigue a continuación.You will build features using React, TypeScript, Node.js, and Python, ...

Founding Ai Engineer — Frontline, Full Stack & Ml (French)

Jobtailor in Madrid seeks a French-speaking Full‑stack AI Engineer to collaborate with customers from onboarding to deployment.Descubra si esta oportunidad es adecuada para usted leyendo toda la información que sigue a continuación.You will build features using React, TypeScript, Node.Js, and Pyth ...

Senior Fullstack Engineer Growth & Conversion at Scale

Alan is seeking an experienced Software Engineer to develop seamless conversion experiences that let prospects become members instantly.Descubra más sobre las tareas diarias, las responsabilidades generales y la experiencia requerida para esta oportunidad desplazándose hacia abajo ahora.The role invol ...

Senior Fullstack Engineer Growth & Conversion at Scale

Alan is seeking an experienced Software Engineer to develop seamless conversion experiences that let prospects become members instantly. The role involves supporting various business initiatives and optimizing a high-traffic website serving millions. The ideal candidate should have over 6 years in software en ...

Senior Fullstack Engineer Growth & Conversion At Scale

Alan is seeking an experienced Software Engineer to develop seamless conversion experiences that let prospects become members instantly.Descubra más sobre las tareas diarias, las responsabilidades generales y la experiencia requerida para esta oportunidad desplazándose hacia abajo ahora.The role i ...

Founding Forward Deployed Engineer

Join BLP Digital — The #1 Solution for ERP AutomationMaximice sus posibilidades de que su candidatura sea seleccionada asegurándose de que su CV y sus habilidades se ajustan al perfil.BLP Digital is redefining ERP automation with agentic AI. Spun out of ETH Zurich and HSG, we build AI agents that auto ...

Founding ML Engineer (Spectrum)

Spectrum collects data from an organization’s code, docs, and issues, and organizes knowledge in a unified ontology that AI agents can efficiently search through and reason over. We aim to revolutionize the semantic layer space for software-building organizations and move beyond specs that fall out of sync wi ...

Founding Forward Deployed Engineer

Join BLP Digital — The #1 Solution for ERP Automation BLP Digital is redefining ERP automation with agentic AI. Spun out of ETH Zurich and HSG, we build AI agents that automate finance, procurement, logistics, sales, and more for some of the world’s largest enterprises. We solve real enterprise p ...

Founding ML Engineer (Spectrum)

Spectrum collects data from an organization’s code, docs, and issues, and organizes knowledge in a unified ontology that AI agents can efficiently search through and reason over. We aim to revolutionize the semantic layer space for software-building organizations and move beyond specs that fall out of sync ...

Founding Ml Engineer (Spectrum)

Spectrum collects data from an organization’s code, docs, and issues, and organizes knowledge in a unified ontology that AI agents can efficiently search through and reason over. We aim to revolutionize the semantic layer space for software-building organizations and move beyond specs that fall out of sync wi ...

Founding Forward Deployed Engineer

Join BLP Digital — The #1 Solution for ERP AutomationMaximice sus posibilidades de que su candidatura sea seleccionada asegurándose de que su CV y sus habilidades se ajustan al perfil.BLP Digital is redefining ERP automation with agentic AI. Spun out of ETH Zurich and HSG, we build AI agents that ...

Fullstack Engineer: Python/FastAPI + React | AI Workflows

PrimeIT España busca un desarrollador con experiencia en Python y FastAPI. Se requiere al menos 4 años de experiencia y capacidad para implementar soluciones de IA en microservicios. ¿Está pensando en solicitar este empleo? No se demore, desplácese hacia abajo y envíe su solicitud lo antes posible par ...

Senior AI & LLM Fullstack Engineer — 100% Remote

knowmad mood busca un/a Ingeniero/a de IA/ML para desarrollar personas sintéticas y soluciones basadas en LLM, pipelines RAG y orquestación de IA, usando grafos de conocimiento en una plataforma cloud-native.Presente su candidatura después de leer los siguientes requisitos de habilidades y cualificaciones ...

Senior Fullstack Engineer – AI Native, Autonomous Agents

HiveMQ is seeking an experienced engineer to design and evolve autonomous coding agents' architecture.Es posible que un gran número de candidatos se presenten a este puesto, así que asegúrese de enviar su CV y su solicitud lo antes posible.The ideal candidate has a strong software engineering background ...

Fullstack Engineer: Python/Fastapi + React | Ai Workflows

PrimeIT España busca un desarrollador con experiencia en Python y FastAPI. Se requiere al menos 4 años de experiencia y capacidad para implementar soluciones de IA en microservicios. ¿Está pensando en solicitar este empleo? No se demore, desplácese hacia abajo y envíe su solicitud lo antes posible p ...

Senior AI & LLM Fullstack Engineer — 100% Remote

knowmad mood busca un/a Ingeniero/a de IA/ML para desarrollar personas sintéticas y soluciones basadas en LLM, pipelines RAG y orquestación de IA, usando grafos de conocimiento en una plataforma cloud-native. Se valoran experiencia en APIs, microservicios, testing, CI/CD y capacidad de comunicar conceptos téc ...

Senior Ai Fullstack Engineer Cloud Applications Remote

HiveMQ’s Vision for this role We aren't just using AI to help us code; we are an AI-native engineering organization. Our next major milestone is architecting a swarm of autonomous coding bees – specialized agents designed to handle end-to-end feature delivery, from infra provisioning to sel ...

Senior Ai & Llm Fullstack Engineer — 100% Remote

knowmad mood busca un/a Ingeniero/a de IA/ML para desarrollar personas sintéticas y soluciones basadas en LLM, pipelines RAG y orquestación de IA, usando grafos de conocimiento en una plataforma cloud-native.Presente su candidatura después de leer los siguientes requisitos de habilidades y cualificacion ...

Senior Fullstack Engineer – Ai Native, Autonomous Agents

HiveMQ is seeking an experienced engineer to design and evolve autonomous coding agents' architecture.Es posible que un gran número de candidatos se presenten a este puesto, así que asegúrese de enviar su CV y su solicitud lo antes posible.The ideal candidate has a strong software engineering backgro ...

Fullstack Engineer, hibrido

Fullstack EngineerÚnete a nuestro equipo como Ingeniero Fullstack!Estás listo para sumergirte en el emocionante mundo de los sistemas de trading continuo intradía? Estamos buscando a una persona dinámica para unirse a nuestro equipo y desempeñar un papel fundamental en la creación del futuro de la tecnol ...

Fullstack .NET Engineer (Backend Focus) AI Tools, Hybrid

Kureos (Conficio Recruitment Limited) is looking for a .NET software developer in Madrid to join their team focusing on a core trading application. The role involves enhancing the application, delivering features, and collaborating with a skilled engineering team. Ideal candidates will have a solid bac ...

Fullstack .NET Engineer (Backend Focus) AI Tools, Hybrid

Kureos (Conficio Recruitment Limited) is looking for a .NET software developer in Madrid to join their team focusing on a core trading application. The role involves enhancing the application, delivering features, and collaborating with a skilled engineering team. Ideal candidates will have a solid bac ...

Fullstack .Net Engineer (Backend Focus) Ai Tools, Hybrid

Kureos (Conficio Recruitment Limited) is looking for a .NET software developer in Madrid to join their team focusing on a core trading application. The role involves enhancing the application, delivering features, and collaborating with a skilled engineering team. Ideal candidates will have a solid bac ...

Fullstack Developer (AI Driven Development)

## Fullstack Developer (AI Driven Development)Applyremote type: Hybridlocations: MADRIDtime type: Full timeposted on: Posted Todayjob requisition id: JR We are Puede obtener más detalles sobre la naturaleza de esta vacante y lo que se espera de los solicitantes leyendo la información a continuación.**One ...

Fullstack Developer (Ai Driven Development)

## Fullstack Developer (AI Driven Development)Applyremote type: Hybridlocations: MADRIDtime type: Full timeposted on: Posted Todayjob requisition id: JR We are Puede obtener más detalles sobre la naturaleza de esta vacante y lo que se espera de los solicitantes leyendo la información a continuación.* ...

Fullstack Engineer (Node.js/React)

At Goodweek, we're building a next-generation AI tool designed to revolutionize business productivity. We are focusing on delivering a secure, scalable, and reliable system that supports real business use cases across different departments. The goal is to make AI practical, controlled, and truly embedded in how ...

Fullstack Engineer (Node.js/React)

At Goodweek, we're building a next-generation AI tool designed to revolutionize business productivity. We are focusing on delivering a secure, scalable, and reliable system that supports real business use cases across different departments. The goal is to make AI practical, controlled, and truly embedded in h ...

Mid Fullstack Software Engineer

Looking to take the next step in your software engineering career? This is an opportunity to join a high-performing team working on technology that sits at the heart of energy trading operations. Para una comprensión completa de esta oportunidad y de lo que se requerirá para ser un candidato exitoso, ...

Fullstack Software Engineer TS

OverviewWe're building a next-generation AI tool designed to revolutionize business productivity. Our team of 40 passionate talents spans across France, Spain, and the United States, and our vision is backed by 6 international investment funds. Sea uno de los primeros solicitantes, lea la descripción ...

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