Data Engineer

Extia Group; Madrid; On-site; EUR 50,000 - 75,000; Full time

Benefits offered by this job

Real flexibility

Personalized training plan

Triple Follow-up

Competitive benefits package

International environment

Great Place to Work

Events, afterworks & active community

Job summary

Extia Group is seeking a Data Engineer in Madrid to guide data engineering across squads, ensuring robust pipelines and scalable data infrastructure. You will migrate legacy platforms to modern hubs and evolve data ecosystems with cutting-edge technologies.

Responsibilities include designing pipelines, collaborating with teams, maintaining data quality, and automating ingestion using Airflow as a Service. Strong French, Spark/Scala, Kafka, COS, SQL/NoSQL, CI/CD, Hadoop, and ELK experience are

Qualifications

• Fluent in French (B2/C1) required.
• Strong knowledge of Spark on Scala.
• Experience with Kafka and event streams.
• Proficiency with S3/Cloud Object Storage (COS) and Parquet format.
• Strong knowledge of SQL and NoSQL databases.
• Experience with CI/CD tooling (GitLab, Jenkins).
• Experience with Hadoop and shell scripting.
• Familiarity with SDLC and Agile ceremonies.
• Experience with Elasticsearch and Kibana.
• Use of GenAI tools for tests, docs and development improvements.
• Familiarity with Vault (HVault).
• Excellent problem-solving and attention to detail.
• Ability to manage Business/IT relations and IT Operations.
• Strong communication and collaboration skills.
• Ability to drive change and deliver results.
• Commitment to continuous learning.

Responsibilities

• Lead design, development and maintenance of scalable data pipelines and systems.
• Collaborate with cross-functional teams to understand data requirements and deliver solutions.
• Ensure performance, security, data quality and integrity of data infrastructure.
• Automate data pipelines and ingestion using orchestrators, primarily Airflow as a Service.
• Design and implement scalable data processing with Scala, Spark and COS.
• Set up CI/CD pipelines for deployments and unit testing.
• Write unit tests and validations; produce technical docs for knowledge sharing.
• Mentor junior data engineers and foster continuous improvement.

Skills

Problem solving

Communication

Interpersonal skills

Change management

Delivery mindset

Continuous learning

Business/IT liaison

Attention to detail

Mentoring

Tools

Spark

Scala

SQL

NoSQL databases

GitLab

Jenkins

Hadoop

Airflow

Elasticsearch

Kibana

Cloud Object Storage (COS)

Parquet

GenAI tools

Vault (HVault)

Job description

Are you looking to join a company that values a people-centered culture, innovation, and well-being at work? At Extia, our motto is “First who, then what” — people come first, followed by the project. We prioritize people and teamwork to deliver high-impact solutions.

At #Extia, we are looking for a Data Engineer!

The role will involve guiding data engineering efforts across different squads, ensuring the robustness and scalability of data pipelines, following established guidelines and technologies, and contributing to projects focused on the creation of new subsidiary data hubs through migration from legacy platforms and their subsequent evolution.

Working hours: Monday to Friday, 9:00–18:00

• French B2/C1 – Mandatory
• Strong knowledge of Spark on Scala
• Streaming processes such as Kafka and event streams
• S3 storage / Cloud Object Storage (COS) and Parquet format
• Strong knowledge of SQL and NoSQL databases
• CI/CD tools, such as GitLab and Jenkins
• Hadoop
• Shell scripting
• Software Development Lifecycle (SDLC) awareness
• Agile principles and ceremonies
• Elasticsearch and Kibana
• GenAI tools for unit tests, documentation and development improvements
• HVault
• Excellent problem-solving skills and attention to detail
• Ability to build and maintain the Business / IT relationship, including IT Operations
• Strong communication and interpersonal skills
• Ability to understand, explain and support change
• Results-driven and delivery-oriented mindset
• Continuous learning and improvement

Then, What?

As a Data Engineer, your main responsibilities will include:

• Lead the design, development and maintenance of scalable data pipelines and systems according to established technologies and guidelines.
• Collaborate with cross-functional teams to understand data requirements and deliver solutions.
• Ensure the performance and security of the data infrastructure, as well as data quality and integrity.
• Optimize data workflows to efficiently enrich and transform large volumes of data with complex business rules.
• Automate data pipelines and streamline data ingestion through orchestrators and scheduling processes, mainly Airflow as a Service.
• Design and implement scalable and secure data processing pipelines using Scala, Spark and Cloud Object Storage (COS).
• Set up CI/CD pipelines to automate deployments, unit testing and development management.
• Write and conduct unit and validation tests to ensure the accuracy and integrity of the developed code.
• Write technical documentation, including specifications and operational documents, to ensure knowledge capitalization.
• Support different teams in troubleshooting and resolving data-related issues.
• Create and maintain comprehensive documentation of data pipelines, systems and processes, ensuring it is accessible to team members.
• Communicate effectively with team members and stakeholders to ensure alignment on data initiatives.
• Provide technical guidance and mentorship to junior data engineers.
• Foster a culture of continuous learning and improvement within the team.

Why join Extia?

• Real flexibility – We believe in trusting our people and finding the right balance.
• Personalized training plan – Continue developing your skills with training adapted to your career goals.
• Triple Follow-up – Technical, HR and managerial support throughout your journey at Extia.
• Competitive benefits package – A package designed to support your well-being.
• International environment – More than 3,000 employees across Europe and Canada.
• Great Place to Work – We are committed to creating an environment where people can thrive.
• Events, afterworks & active community – Connect, share and enjoy the Extia experience beyond projects.

Interested or know someone who could be a great fit?