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.

Firmware BLE Developer - 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 BLE Firmware Developer, you will design, develop, and integrate IoT devices across our Offices, Stores, and Warehouses.

What we offer

✨ Unique and high-impact projects.

👥 An IT team of over 1,200 professionals.

🛠️ High-level technology stack.

📈 Career plan with annual salary reviews.

⏰ Flexible scheduling.

🎓 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 Engineering / Telecommunications / Electronics.

Knowledge

Essential in..

Embedded systems with extensive experience in Nordic Semiconductor SoCs (nRF52, nRF53, nRF54) and development using Zephyr Project RTOS.
Implementation of state-of-the-art Bluetooth Low Energy (BLE) solutions (5.4, PAWR...).

Valued in..

Certifications in the Bluetooth Developer Program.
Specialized courses in Nordic and Zephyr.
Technical leadership capacity in firmware teams.
Clear and didactic documentation skills for other engineers.
Innovation mindset and ability to solve complex problems.

Experience

Minimum 1 year of experience developing BLE Firmware.

Your day-to-day

💻You will design and develop low-power BLE Firmware for IoT devices in energy-critical environments.

🗄️Optimization and testing.

✅Implementation of wireless Firmware updates (OTA).

📚You will maintain alternatives and backup plans for your solutions, ensuring continuity in the face of unforeseen events.

👥Collaborate with multidisciplinary teams to integrate solutions into the cloud (GCP) and gateways.

First and foremost, we need you to...

Be passionate about technology with business logic
Not settle and strive for continuous improvement
Be willing to take on new technological challenges

Conditions

Full Time

Gross annual remuneration based on your experience

40,589€ - 61,617€

View original advert (Spanish)

Como desarrollador Firmware BLE, diseñarás, desarrollarás e integrarás dispositivos IoT en nuestras Oficinas, Tiendas y Almacenes.

Qué te ofrecemos

✨ Proyectos únicos y de gran impacto.

👥 Un equipo IT de más de 1.200 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 ingeniería Informática / Telecomunicaciones / Electrónica.

Conocimiento

Imprescindible en..

Sistemas embebidos con amplia experiencia en Nordic Semiconductor SoCs (nRF52, nRF53, nRF54) y en el desarrollo sobre Zephyr Project RTOS.
Implementación de soluciones Bluetooth Low Energy (BLE) de última generación (5.4, PAWR...).

Valorable en..