The Key Talent is a Spanish HR Tech company specializing in digital recruitment and talent assessment solutions. They leverage data and technology to help organizations identify and attract the best talent through gamified assessments and AI-driven platforms.

Headquartered in Madrid, the company is a significant player in the Spanish HR technology landscape. For international professionals, they offer roles in cutting-edge fields like AI and data engineering, often operating in a multilingual environment that supports digital transformation for global clients.

Founded in 2016 in Madrid, The Key Talent was created to modernize the recruitment process using digital tools and data analytics. It has since expanded its portfolio to include gamified assessments and AI-powered talent management solutions.

For international professionals

Founded and headquartered in Madrid, providing a strong local network and stability.
Focuses on AI-driven HR solutions, making it an attractive destination for tech-focused expats.
Offers structured internship programs ('Becarios') which can serve as a gateway for international students in Spain.
Operates in the growing HR Tech sector, providing opportunities to work on modern SaaS products.

Fullstack Developer (AI-driven & Custom Solutions)

The Key Talent

This job was originally posted in Spanish and automatically translated to English. You'll most likely need Spanish to apply.

Job Description

Your future with The Key Talent

About us

We are a technology company founded in 2015 with a clear mission: to help the world of Human Resources adapt to an environment of constant change and transformation.

We believe the sector needs to evolve faster, and that is why we bet on continuous innovation, the development of proprietary solutions, and the real incorporation of artificial intelligence into products.

We develop SaaS solutions and, increasingly, custom AI-driven platforms, working with global companies across different continents.

We are currently in a process of technological transformation where experimentation, the construction of new products, and the real integration of AI capabilities are central to the journey.

What do we need?

We are looking for a Fullstack Developer to join our team and lead the end-to-end development of technological projects for clients, with a strong artificial intelligence component.

Your role will combine:

Development of custom solutions from scratch

Participation in innovative AI-based projects

Evolution and modernization of our current platform

What will be your impact?

Design and develop customized platforms for clients, integrating AI capabilities

Build end-to-end solutions: frontend, backend, and integration with external services

Experiment with new tools, frameworks, and approaches to accelerate development

Participate in the transformation toward a more modern and scalable architecture

Contribute to the evolution of our existing SaaS products

Ensure code quality, maintainability, and scalability

What profile are we looking for?

We are looking for a profile with 2-5 years of experience as a Fullstack Developer who wants to go beyond traditional development and participate in the construction of innovative AI-based solutions.

Stack, architecture, and way of building

We are looking for a solid technical foundation and a way of working oriented toward product, speed, and judgment. AI is not an extra: it is a central part of the role.

Services, APIs, and architecture

Backend foundation to build scalable and maintainable solutions.

Experience developing scalable REST APIs

Proficiency in Python (Django, Django REST Framework, or others)

Experience with relational and NoSQL databases

Good judgment in architecture and service design

Product, interface, and experience

Modern, clean frontend layer prepared to evolve quickly.

Solid experience with Angular

Knowledge of TypeScript, HTML, CSS/SCSS

Experience in API consumption and modern frontend architecture

Environment, deployment, and stability

Strong foundations to develop, deploy, and maintain products fluently.

Experience with Docker

Basic knowledge of AWS or cloud environments

Familiarity with CI/CD

AI-first way of working

This role is not just compatible with AI: artificial intelligence is a central part of the work. We expect you to use tools such as ChatGPT, Copilot, Cursor, Kiro, Antigravity, or others to accelerate development and build better.

Accelerate the development of new solutions

Rapidly prototype products for clients

Improve code quality and efficiency

Explore new ways of building software

Have the judgment to validate AI outputs

Understand its limitations and risks

Apply it with a focus on business impact

What type of person fits with us?

We are looking for someone who:

Enjoys building from scratch and seeing the direct impact on the client

Is autonomous, resourceful, and has an ownership mindset

Has technological curiosity and a desire to constantly learn

Feels comfortable in flexible, evolving environments

Wants to participate in a moment of real transformation toward AI

What do we offer?

Competitive salary according to experience

Participation in innovative projects with real impact

An environment where you can experiment with new technologies and AI tools

A culture of ownership, quality, and continuous improvement

Offices in Barrio de Salamanca (Madrid) + 2 remote days and flexibility

Join us

View original advert (Spanish)

Fullstack Developer (AI-driven & Custom Solutions)

Tu futuro con The Key Talent

Sobre nosotros

Somos una compañía tecnológica fundada en 2015 con una misión clara: ayudar al mundo de los Recursos Humanos a adaptarse a un entorno de cambio y transformación constante.

Creemos que el sector necesita evolucionar más rápido, y por eso apostamos por la innovación continua, el desarrollo de soluciones propias y la incorporación real de la inteligencia artificial en los productos.

Desarrollamos soluciones SaaS y, cada vez más, plataformas a medida impulsadas por IA, trabajando con compañías globales en diferentes continentes.

Actualmente estamos en un proceso de transformación tecnológica donde la experimentación, la construcción de nuevos productos y la integración real de capacidades de IA son parte central del camino.

¿Qué necesitamos?

Buscamos un/a Fullstack Developer para incorporarse a nuestro equipo y liderar el desarrollo de proyectos tecnológicos end-to-end para clientes, con un fuerte componente de inteligencia artificial.

Tu rol combinará:

Desarrollo de soluciones a medida desde cero

Participación en proyectos innovadores basados en IA

Evolución y modernización de nuestra plataforma actual

¿Cuál será tu impacto?

Diseñar y desarrollar plataformas personalizadas para clientes, integrando capacidades de IA

Construir soluciones end-to-end: frontend, backend e integración con servicios externos

Experimentar con nuevas herramientas, frameworks y enfoques para acelerar el desarrollo

Participar en la transformación hacia una arquitectura más moderna y escalable

Contribuir a la evolución de nuestros productos SaaS existentes

Asegurar calidad, mantenibilidad y escalabilidad del código

¿Qué perfil buscamos?

Buscamos un perfil con 2-5 años de experiencia como desarrollador/a Fullstack, que quiera ir más allá del desarrollo tradicional y participar en la construcción de soluciones innovadoras basadas en IA.

Stack, arquitectura y forma de construir

Buscamos una base técnica sólida y una manera de trabajar orientada a producto, velocidad y criterio. La IA no es un extra: forma parte central del rol.

Servicios, APIs y arquitectura

Base backend para construir soluciones escalables y mantenibles.

Experiencia desarrollando APIs REST escalables

Dominio de Python (Django, Django REST Framework u otros)

Experiencia con bases de datos relacionales y NoSQL

Buen criterio en diseño de arquitecturas y servicios

Producto, interfaz y experiencia

Capa frontend moderna, limpia y preparada para evolucionar rápido.

Experiencia sólida con Angular

Conocimientos en TypeScript, HTML, CSS/SCSS

Experiencia en consumo de APIs y arquitectura frontend moderna

Entorno, despliegue y estabilidad

Buenas bases para desarrollar, desplegar y mantener productos con fluidez.

Experiencia con Docker

Conocimientos básicos de AWS o entornos cloud

Familiaridad con CI/CD

AI-first en la forma de trabajar

Este rol no es solo compatible con IA: la inteligencia artificial es parte central del trabajo. Esperamos que utilices herramientas como ChatGPT, Copilot, Cursor, Kiro, Antigravity u otras para acelerar el desarrollo y construir mejor.

Acelerar el desarrollo de nuevas soluciones

Prototipar rápidamente productos para clientes

Mejorar la calidad y eficiencia del código

Explorar nuevas formas de construir software

Tener criterio para validar outputs de IA

Entender sus limitaciones y riesgos

Aplicarla con foco en impacto de negocio

¿Qué tipo de persona encaja con nosotros?

Buscamos a alguien que:

Disfrute construyendo desde cero y viendo el impacto directo en cliente

Sea autónomo/a, resolutivo/a y con mentalidad de ownership

Tenga curiosidad tecnológica y ganas de aprender constantemente