This job was automatically translated to English.

Requirements

What we're looking for

We highly value at least 3 years of experience in scalable data architectures, real-time data processing, and efficient storage.

We are looking for a profile with knowledge in Big Data environments, data pipelines, distributed databases and efficient information processing.

Previous experience of at least 3 years in data platform development or Big Data architectures.
Knowledge of real-time and batch data processing with tools such as Apache Kafka, Spark, Flink, or similar.
Knowledge of SQL and NoSQL databases (PostgreSQL, MySQL, MongoDB, Cassandra, etc.).
Development in languages such as Python, Scala, or Java for data manipulation and processing.
Knowledge of containers and orchestration (Docker, Kubernetes).
Motivation to learn about Data Governance, ETL, and event-driven architectures.
English level B2 or higher.
Analytical skills, optimization mindset, and teamwork.

Nice to have

Experience with Data Governance tools such as Apache Atlas or DataHub.
Certifications in data management and distributed platforms.

If you are passionate about data, scalability, and architecture optimization, we are looking for you! 🚀

Pay & benefits

What you'll get

You will join a dynamic, growing company in the midst of international expansion.
You will receive a Welcome Pack and go through an onboarding process so you have everything clear from day one.
We are pioneers in the IoT and Digital Twin sector internationally.
You will be able to grow personally and professionally alongside the Libelium team.
EFR Measures - Balance, flexibility and responsibility for the team:
Teleworking 3 days 2 office (Hybrid) in Spain
Professional development through training, certifications and performance evaluation.
25 days of vacation improving upon the collective agreement
Collective bridge days
Flexible schedule
Summer: Intensive schedule, with the possibility of working from 7 to 15H
Summer: Full weeks of teleworking with approval from your superior.
Summer: Teleworking from a second residence or communicated location (Spain)
Coffee and fruit service in the office at no cost to the team.
Office locations at WTC Zaragoza and Urban Center Murcia with all kinds of services nearby.
Teaming team that organizes leisure activities.
Competitive salary: Fixed + Variable + Flexible compensation.
Employee club with Happy Tickets: discounts on services and establishments.
User-friendly employee portal with all the information you need on a daily basis.
And much more...

The role

At Libelium, we are looking for a Backend Developer eager to grow in a highly innovative and impactful environment. The selected person will work on the development and optimization of our data platform, ensuring its performance, scalability, and security.

What you'll do

Design, develop, and optimize the data platform architecture at Libelium.
Implement data pipelines for real-time and batch processing.
Manage SQL and NoSQL databases optimized for efficient data storage and querying.
Integrate data from IoT devices, external APIs, and distributed data sources.
Develop and maintain scalable backend services for data processing and access.
Implement Data Lake and Data Warehouse architectures adapted to business needs.
Ensure data security and governance, applying best practices in access control and encryption.
Monitor and optimize platform performance, detecting and resolving bottlenecks.
Collaborate with multidisciplinary teams (developers, data analysts, DevOps) to ensure efficient integration.

About Libelium

Libelium is a Spanish technology company specializing in IoT (Internet of Things) hardware and software solutions. Founded in 2006, it provides wireless sensor networks, IoT gateways, and a cloud-based platform for data management and analytics, serving sectors like smart cities, agriculture, and environmental monitoring. The company is recognized in the IoT industry for its Waspmote sensor platform and its focus on enabling digital transformation through connected devices.

Libelium is headquartered in Zaragoza, Spain, and has a strong local presence, with its operations and development teams based there. The company's work culture emphasizes innovation and technical expertise, making it an attractive option for international professionals interested in IoT, software engineering, and B2B sales. With a growing portfolio of platform-based solutions, Libelium offers opportunities for those looking to contribute to the IoT ecosystem in Spain, though its scale is relatively small compared to global tech giants.

Founded: 2006
Employees: 50–200
Headquarters: Zaragoza, Spain
In Spain: Zaragoza
Website: https://jobeax.com/link/nLx6pXkDYZL5qiCq

Good to know if you are moving

Libelium is based in Zaragoza, a mid-sized Spanish city with a lower cost of living compared to Madrid or Barcelona, offering a more relaxed lifestyle.
The company works in the IoT sector, providing opportunities to work on hardware and software solutions for smart cities, agriculture, and environmental monitoring.
As a Spanish company, Libelium offers a chance to work in a local environment with a focus on engineering and product development, though English may be used in technical roles.
The company has a global reach, with deployments in over 100 countries, which can provide international exposure despite its Spanish base.
Zaragoza is well-connected by high-speed rail to Madrid and Barcelona, making it easy to travel for work or leisure.

In their own words

About the company & team

At Libelium, we develop innovative technological solutions based on environmental data through digital twins, enriched with local information captured by our IoT devices. Our technology allows smart cities to optimize their low-emission zones and critical infrastructures to improve their efficiency and security through advanced environmental monitoring, as in the case of electric power transport.

Our IoT devices connect the physical world with the digital one through our space ♾️iris360, driving sustainability, productivity, and datacratization in companies and cities across more than 120 countries.

iris360 is Libelium's core platform: a multi-tenant SaaS/On-premise ecosystem for IoT data management, Digital Twins, and European Data Spaces. It is deployed in hybrid environments (OVH Cloud + AWS) and in on-premise installations in more than 50 cities, with clients ranging from public administrations (Asturias DXC, Cartagena, European municipalities) to international organizations (UNDP, UNECE).

The platform grows in modules (envair360, grid360) and each new project involves a replicated deployment of the base infrastructure. Currently, we are looking to strengthen the team. We firmly believe that data is the new language of communication between administrations, companies, and citizens, facilitating the creation of a positive impact on the planet.

Our 🎯 MISSION: We transform data from companies and cities into decisions that make our planet more sustainable.
Our 👁️ VISION: To build a resilient, connected, and data-driven future, collaborating with change makers who share our values.
Our 💎 VALUES: We connect reality with knowledge, drive decisions with precision, and transform data into sustainable impact.

All open roles at Libelium

Tech Consultant - Backend Developer

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