Founding Ainative Fullstack Engineer Reactpython Jobs in Spain

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Founding SMB Sales Leader — Barcelona (Italian speaking)

A leading AI company in legal tech is seeking a Founding Sales Leader for their new office in Barcelona. This role involves building the local sales culture, recruiting and coaching a team, and managing SMB outbound revenue targets. Candidates must have proven experience in B2B SaaS sales, a hands-on approach to ...

Founding Account Executive (Embat One) International Hunter

Embat is one of the fastest-growing startups in Europe, founded in 2021 to revolutionize how medium and large-sized enterprises manage their finances and cash flow in real-time. Our mission is to create the definitive financial operating system for companies, delivering 100x efficiency compared to legacy s ...

Founding AI Platform Lead Graph & ML, Remote

An early-stage startup is seeking a hands-on AI Engineer Lead to drive the technical development of an AI-powered platform. In this fully remote role, you will improve and scale the relationship graph, develop AI-driven matching systems, and work closely with founders on the technology roadmap. Candidates must h ...

Founding UX/UI Designer — AI Powered Insurtech

A leading AI-driven insurance startup in Barcelona is seeking a Founding UX/UI Designer to own the user experience of their innovative product. In this role, you will design intuitive user journeys and simplify complex workflows for insurance professionals. The ideal candidate has over 5 years of UX/UI design ex ...

Founding GTM Leader for AI Legal Tech

A forward-thinking venture studio in Barcelona seeks a Founding Head of GTM to drive sales for their innovative AI operating system for law firms. The ideal candidate should have a strong track record in early-stage sales, proven expertise in full cycle sales, and be fluent in Spanish. This role requires hands-o ...

Founding Head Of Gtm Legal Tech (Juryo.Ai)

About Antai Ventures Antai Ventures is a Barcelona-based venture studio with presence across Southern Europe and LatAm. We partner-up and invest in the best co-founders to build global companies willing to disrupt multi-billion dollar industries. Since 2012 we have co-founded +30 companies includ ...

Founding Senior Designer — AI Driven SaaS & UX

An innovative AI security startup is seeking a Senior Designer (Founding Member) to elevate their company and lead design projects. You will be responsible for designing the product, website, and marketing materials, leveraging AI tools for maximum impact. Applicants should have proven experience in SaaS design ...

Founding Math & Data Science Faculty (Tenure Track)

A prestigious university in Spain is seeking a full-time researcher in Mathematics to join their new Mathematics and Data Science Programme. The candidate should hold a PhD in Mathematics, demonstrate teaching proficiency in both English and Spanish, and engage actively in high-quality research. This is a unique ...

Founding Growth Data Scientist — Remote, Unlimited PTO

A growing technology company in Barcelona is seeking a founding data scientist to develop and drive the analytical agenda within the Growth team. This role involves building a robust A/B testing framework and scalable data pipelines while analyzing user behavior across different channels. The ideal candidate wil ...

Founding Account Lead: Build & Scale Key Relationships

Una startup innovadora busca una persona autónoma para un rol clave en ventas y gestión de cuentas en España. Este puesto implica abrir oportunidades, coordinar proyectos y gestionar relaciones con clientes. Se requiere un español nativo con experiencia en ventas B2B y muy buen nivel de inglés. La persona selecc ...

Spain Founding Account Lead | Market & Delivery Lead

Una empresa del sector cultural busca un Fundador en España que se encargue de las ventas y gestión de cuentas en Vitoria-Gasteiz. El candidato ideal deberá tener experiencia en el sector cultural, habilidades comerciales y capacidad para coordinar con equipos. Es esencial la autonomía y una comprensión sólida d ...

Founding Growth Data Scientist — Remote, Unlimited PTO

A leading jewelry marketplace in Spain seeks a founding data scientist to build analytics capabilities. You will design A/B testing frameworks, maintain data infrastructure, and analyze user behavior to drive growth. Ideal candidates have a Master's in a quantitative field and 4-6+ years of experience in data sc ...

Founding Platform Architect: AI Driven Backend & Infra

A leading AI communications platform is seeking a Senior Backend & Platform Engineer to join their team. This hybrid role encompasses both infrastructure/platform and backend development, requiring expertise in Python, cloud architecture, and Kubernetes. The ideal candidate will help to design and evolve complex ...

Founding SDR IT & Cloud Sales, Europe Growth

A dynamic tech company in Barcelona is seeking Founding Sales Development Representatives to expand their IT offerings. In this role, you will identify and qualify opportunities while working closely with sales and marketing to establish successful outreach campaigns. Ideal candidates are native or bilingual in ...

Founding UX/UI Designer — AI Powered Insurtech

A leading AI-driven insurance startup in Barcelona is seeking a Founding UX/UI Designer to own the user experience of their innovative product. In this role, you will design intuitive user journeys and simplify complex workflows for insurance professionals. The ideal candidate has over 5 years of UX/UI design ex ...

Founding Account Executive – Spain (Hybrid, AI + Logistics)

A leading technology firm is seeking a Founding Account Executive in Barcelona to spearhead its European expansion. This role involves full-cycle ownership of sales for mid-market customers in Spain, requiring a native-level command of Spanish and Catalan and professional fluency in English. Candidates should ha ...

Founding Head Of Gtm Legal Tech (Juryo.Ai)

About Antai Ventures Antai Ventures is a Barcelona-based venture studio with presence across Southern Europe and LatAm. We partner-up and invest in the best co-founders to build global companies willing to disrupt multi-billion dollar industries. Since 2012 we have co-founded +30 companies including ...

Founding Account Executive | Factorial IT Spanish Market

Founding Account Executive | Factorial IT - Spanish Market Founding Account Executive | Factorial IT - Spanish Market 2 weeks ago Be among the first 25 applicants Hello! At Hello! At Factorial , we’re expanding our platform beyond HR and Finance to in ...

Madrid based Founding Seller for CEE Markets

A leading automation company is seeking a Founding Seller to join their Madrid hub, focusing on the CEE region. This role involves pioneering sales strategies, managing full sales cycles, and expanding market presence. The ideal candidate has over 3 years of B2B sales experience, excels in high-growth environmen ...

Founding GTM Leader for AI Legal Tech

A forward-thinking venture studio in Barcelona seeks a Founding Head of GTM to drive sales for their innovative AI operating system for law firms. The ideal candidate should have a strong track record in early-stage sales, proven expertise in full cycle sales, and be fluent in Spanish. This role requires hands-o ...

Founding Senior Designer — AI & Product UX (Hybrid)

An innovative AI startup based in Barcelona is seeking a Senior Designer (Founding Member) to lead product and marketing design efforts. The ideal candidate will have proven experience designing SaaS applications and will excel in utilizing AI tools to enhance impact. Responsibilities include owning projects fro ...

Founding SMB Sales Leader — Barcelona (Italian speaking)

A leading AI company in legal tech is seeking a Founding Sales Leader for their new office in Barcelona. This role involves building the local sales culture, recruiting and coaching a team, and managing SMB outbound revenue targets. Candidates must have proven experience in B2B SaaS sales, a hands-on approach to ...

Founding Account Executive (Embat One) International Hunter

Embat is one of the fastest-growing startups in Europe, founded in 2021 to revolutionize how medium and large-sized enterprises manage their finances and cash flow in real-time. Our mission is to create the definitive financial operating system for companies, delivering 100x efficiency compared to legacy syst ...

Founding Account Executive: International Hunter for Fintech

A leading fintech startup in Madrid is seeking a Founding Account Executive for its specialized unit, EmbatOne. This role involves full-cycle sales ownership, with a focus on outbound strategies targeting international clients. The ideal candidate will have over 2 years of B2B sales experience and a strong under ...

Founding AI Platform Lead Graph & ML, Remote

An early-stage startup is seeking a hands-on AI Engineer Lead to drive the technical development of an AI-powered platform. In this fully remote role, you will improve and scale the relationship graph, develop AI-driven matching systems, and work closely with founders on the technology roadmap. Candidates must h ...

Founding Account Executive | Factorial IT Portuguese Market

Información personal Nombre * Apellidos * Teléfono Email * URL personal Información sobre la solicitud Carta de presentación Curriculum vitae Subir archivo (máx. 10MB) Imagen de perfil S ...

Founding Head of GTM Legal Tech (Juryo.ai)

We welcome talented, high-energy and amazing founders. Let’s work together . Founding Head of GTM - Legal Tech (Juryo.ai) Location Employment Type Full time Location Type On-site Department About Antai VenturesAntai Ventures ...

Founding GTM Lead for Legal Tech AI

A Barcelona-based venture studio seeks a Founding Head of GTM for their legal tech startup. This role involves creating a scalable sales engine, managing client interactions with top law firms, and building a team from the ground up. Candidates must have a strong sales background in early-stage environments, nat ...

Founding Platform Architect: AI Driven Backend & Infra

A leading customer communications platform is looking for a Senior Backend & Platform Engineer in Madrid. This unique hybrid role involves 50% Infrastructure/Platform and 50% Backend Development, focusing on Python services and cloud architecture. The ideal candidate will have over 5 years of experience, experti ...

Founding Product Operations Lead — Build Reliable Ops

A tech company focusing on smart shopping is seeking a Product Operations Lead in Barcelona. In this foundational role, you will work closely with the COO to build and streamline the product operations function. Responsibilities include owning performance metrics, leading a new team, ensuring operational reliabi ...

Founding Account Executive | Factorial IT Spanish Market

Hello!At Factorial, we’re expanding our platform beyond HR and Finance to include IT, Cloud, and Device Management — creating the first truly connected people and IT management experience. We’re looking for Founding Account Executives</stro ...

Founding Account Executive | Factorial IT Portuguese Market

Hello!At Factorial, we’re expanding our platform beyond HR and Finance to include IT, Cloud, and Device Management — creating the first truly connected people and IT management experience. We’re looking for Founding Account Executives</stro ...

Senior Fullstack Engineer AI/Cloud, Remote First

Rithum™ is the world’s most trusted commerce network, accelerating how brands, suppliers, and retailers work together to deliver seamless e-commerce experiences. We provide an unmatched platform for brands and retailers, enabling them to accelerate growth, optimise operations across channels, scale product of ...

Senior Fullstack Software Engineer (w/d/m)

femtasy is the audio-only streaming platform for female-centric erotica. We inspire women to explore and enjoy on their own terms; simple as that. We stand for zest for life – female empowerment is in our DNA. We are pioneering a female-centric product, are led by a female CEO & Founder, and >90% of our te ...

Senior Fullstack Engineer Elixir/TS, Scale & Impact

A women's audio streaming platform is seeking an experienced software developer to oversee platform maintenance, design, and scaling. You will implement new features using technologies like Elixir, Ruby, and TypeScript, while collaborating closely with the CTO and other teams. The ideal candidate should have at ...

Remote Senior Ruby on Rails Fullstack Engineer

A tech recruitment agency is seeking a Senior Software Engineer for a remote position in Spain. The successful candidate will design and develop features using Ruby on Rails, contributing to both backend and frontend tasks. They must have at least 8 years of experience, particularly strong in backend engineering ...

Senior Software Engineer Ruby on Rails (Fullstack)

As a Senior Software Engineer at Rail Europe, you will be a key contributor to the B2C engineering team, taking ownership of features within Rail Europe’s public-facing products. Developing and Delivering Solutions: Design, develop, and deliver high-quality software features using Rub ...

Fully Remote Principal Fullstack Engineer — React/Node

A European deep-tech company is seeking a Senior Fullstack Engineer to lead the design of scalable applications using React and Node.js. The role includes technical leadership, mentoring, and driving migration strategies. Candidates should have a strong background in React and Node.js, with experience in modern ...

Senior TypeScript Fullstack Engineer – Remote Tech Lead

A global B2B SaaS company is seeking a Senior Fullstack TypeScript Developer to enhance and develop features for their products. In this role, you'll work on both frontend and backend tasks while leading development efforts within your team. Ideal candidates will have over 7 years of experience in TypeScript and ...

Remote First Senior Fullstack Engineer: Python + React

A dynamic software company is looking for a highly skilled Fullstack Engineer to design, develop, and maintain scalable server-side applications. The ideal candidate will bring 8+ years of backend development experience, focusing on building robust microservices and efficient APIs. This role includes integrating ...

Staff/Lead Fullstack Engineer (Data Structures Expert)

Overview Join to apply for the Staff/Lead Fullstack Engineer (Data Structures Expert) role at Mimica . What We Are Building: Mimica's mission is to empower enterprises, teams, and individuals to reclaim their most precious resource — time and work more efficiently, with great ...

Fullstack Security Engineer: Build Secure Cloud UIs

A leading cloud security company is seeking a Software Engineer in Spain to maintain vital software architectures and develop user-friendly security management interfaces. The ideal candidate will have over 2 years of experience in web development, integrating backend services, and proficiency in React and Go. E ...

Remote Senior .NET Core/Angular Fullstack Engineer

Business Insights es una empresa de desarrollo de software personalizado para empresas. Estamos viviendo una etapa de crecimiento y queremos incorporar al equipo la figura de un Fullstack Developer (.Net Core/Angular). Creemos en la importancia de la innovación y la creatividad en l ...

Remote Fullstack Engineer (Freelance) Scale Global Features

A leading digital real estate platform is seeking a FullStack Engineer to build and scale features for millions of users. This fully remote position involves working with modern technologies including JavaScript, React, and GraphQL. Responsibilities include developing APIs, enhancing system performance, and coll ...

Remote Java & Vue Fullstack Engineer | Flexible Hours

Una consultora de tecnología busca un/a Fullstack Developer especializado en Java y Vue para un proyecto remoto a largo plazo. Se requiere experiencia en desarrollo de aplicaciones web modernas, así como la capacidad de trabajar en un entorno de equipo ágil. El puesto ofrece un horario de trabajo flexible y un p ...

Remote Senior Fullstack Engineer (Python/Django + React)

A dynamic tech company in Spain seeks a Senior Fullstack Engineer to enhance user engagement through robust backend services and APIs. You will primarily focus on Python/Django while contributing to the React/Typescript frontend. The role offers full autonomy and collaboration across teams, aiming for continuous ...

Senior Fullstack Engineer, Jira Cloud Apps — Remote

A leading software company in Spain is looking for a Senior Software Engineer to design, build, and maintain Jira Cloud apps. You’ll ensure high-quality features and performance as part of the Jira Cloud Apps Team. The role offers a flexible work arrangement, allowing you to choose where you thrive, whether from ...

Senior FullStack Engineer oportunidad para aprender Elixir

Desde E-Frontiers, buscamos un Full Stack Engineer para uno de nuestros clientes, una empresa líder en tecnología que desarrolla soluciones de búsqueda avanzadas para e-commerce, ayudando a las tiendas online a incrementar sus ventas. ...

Senior FullStack Engineer oportunidad para aprender Elixir

Desde E-Frontiers, buscamos un Full Stack Engineer para uno de nuestros clientes, una empresa líder en tecnología que desarrolla soluciones de búsqueda avanzadas para e-commerce, ayudando a las tiendas online a incrementar sus ventas. ...

Senior FullStack Engineer oportunidad para aprender Elixir

Desde E-Frontiers, buscamos un Full Stack Engineer para uno de nuestros clientes, una empresa líder en tecnología que desarrolla soluciones de búsqueda avanzadas para e-commerce, ayudando a las tiendas online a incrementar sus ventas. ...

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