Mercadona is Spain's leading grocery retailer, operating a network of over 1,600 supermarkets across Spain and Portugal. As a dominant force in the Spanish retail industry, the company manages an extensive supply chain, a sophisticated logistics network, and a rapidly growing e-commerce platform, employing nearly 100,000 people.

Headquartered in Valencia, Mercadona is one of the country's largest private employers and is well-known for its policy of offering permanent contracts to all employees from their first day. For international professionals, the company offers diverse opportunities in logistics, engineering, and specialized technology roles within their IT division, though a high level of Spanish proficiency is generally required across all departments.

Founded in 1977 as a small butcher shop chain in Valencia, Mercadona was transformed by Juan Roig into a retail powerhouse. It revolutionized the Spanish market with its 'Always Low Prices' strategy and its focus on high-quality private label brands like Hacendado and Deliplus.

For international professionals

Offers permanent contracts (contrato indefinido) to all employees from the first day of employment.
Provides extensive internal training and a structured career development model for long-term growth.
While most roles require Spanish, their IT and digital transformation hubs in Valencia and Madrid hire for specialized technical skill sets.
Consistently ranked as one of the most stable and reputable employers in Spain according to Merco and other corporate barometers.

Python Developer - AI Specialist - Valencia/València

Mercadona

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

Job Description

As a Python developer, you will be responsible for evolving the corporate standard for the development of Python microservices and libraries at Mercadona.

What we offer you

✨ Unique and high-impact projects.

👥 An IT team of more than 1,400 professionals.

🛠️ High-level technology stack.

📈 Career plan with annual salary reviews.

⏰ Flexible hours.

🎓 Continuous training and professional growth.

🔒 Stability and team culture.

🏥 In-house medical service.

🏢 Innovative and collaborative offices.

💰 Competitive salary based on your experience.

What we ask of you

Education

Degree in Computer Science / Telecommunications

Knowledge

Essential in:

Python.
ORM (Django ORM, SQL Alchemy).
Relational databases.
SQL.
Git.
Testing.

Valued in:

Master's in AI.
Messaging queues: Kafka.
Redis.
Celery.
Docker.
Cloud knowledge: Kubernetes.
CI/CD deployment tools.
Architecture patterns.
Clean Code.

Experience

Minimum 2 years in Python development and at least 1 year oriented towards AI.

What your day-to-day will be like

💻 Develop and maintain Python Framework libraries.
🗄️ Design reusable solutions for common problems.
✅ Evolve components of FastAPI, SQLAlchemy, Kafka, MQTT, HTTP Client, Outbox, authentication, and observability.
📚 Creation of unit and integration tests.

First of all, we need you to...

Be passionate about technology with business logic
Not settle and seek continuous improvement
Be willing to face new technological challenges

Conditions

Full Time
Gross annual remuneration based on your experience
29,678€ - 45,054€

View original advert (Spanish)

Como desarrollador Python, serás responsable de evolucionar el estándar corporativo para el desarrollo de microservicios y librerías Python en Mercadona.

Qué te ofrecemos

✨ Proyectos únicos y de gran impacto.

👥 Un equipo IT de más de 1.400 profesionales.

🛠️ Stack tecnológico de alto nivel.

📈 Plan de carrera con revisiones salariales anuales.

⏰ Flexibilidad horaria.

🎓 Formación continua y crecimiento profesional.

🔒 Estabilidad y cultura de equipo.

🏥 Servicio médico propio.

🏢 Oficinas innovadoras y colaborativas.

💰 Salario competitivo según tu experiencia.

Qué te pedimos

Formación

Grado en Informática / Telecomunicaciones

Conocimiento

Imprescindible en:

Python.
ORM (Django ORM, SQL Alchemy).
BBDD relacionales.
SQL.
Git.
Testing.

Valorable en:

Máster en IA.
Colas de mensajería: Kafka.
Redis.
Celery.
Docker.
Conocimientos Cloud: Kubernetes.
Herramienta de despliegue CI/CD.
Patrones de arquitectura.
Clean Code.

Experiencia

Mínimo 2 años en desarrollo con Python y al menos 1 año orientado a IA.

Cómo será tu día a día

💻 Desarrollar y mantener librerías del Framework Python.
🗄️ Diseñar soluciones reutilizables para problemas comunes.
✅ Evolucionar componentes de FastAPI, SQLAlchemy, Kafka, MQTT, HTTP Client, Outbox, autenticación y observabilidad.
📚 Creación de pruebas unitarias y de integración.