Senior Data Engineer (ETL)

At Quento, the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.
At Quento, we empower our people to innovate and lead in delivering transformative ICT solutions to our clients worldwide. Our high-performing, dynamic, and collaborative environment fosters professional growth at every stage.
Quento Technologies seeks a highly motivated Senior Data Engineer (ETL):
Responsibilities:
Support the migration of legacy data collection and database systems to modern cloud-based data management platforms
Design, develop, and maintain ETL/ELT and data integration solutions
Develop and optimise Python-based scripts for data extraction, validation, transformation, and migration
Support the modernization of existing SAS-based data processing and reporting workflows
Integrate and consolidate data from multiple sources into unified and reusable datasets and databases
Design and optimise database structures supporting analytical and operational workloads
Conduct testing and quality assurance activities for new and existing solutions
Support deployment, maintenance, and lifecycle management of data pipelines
Collaborate with business stakeholders, data engineers, architects, and platform specialists
Contribute to technical documentation, knowledge sharing, and continuous improvement initiatives
Ensuring that all activities and duties are carried out in full compliance with regulatory requirements and supporting the continued implementation of the Group Anti-Bribery and Corruption Policy
Requirements
Bachelor's degree in Computer Science, Engineering, Data Science, Information Systems, Mathematics, or a related field
Minimum six (6) years of professional practice, following completion of university studies, in data management and software development
Strong background in software development and/or data engineering
Advanced Python programming skills, including the design and implementation of ETL/ELT solutions
Strong knowledge of SQL and relational databases
Hands-on involvement in database management and data integration activities
Proven ability to develop data validation, transformation, and migration solutions
Demonstrated contribution to migration initiatives from legacy systems to cloud-based platforms
Familiarity with version control systems such as Git
Strong analytical, troubleshooting, and problem-solving skills
Fluency in English at C1 level or higher according to the CEFR (Common European Framework of Reference for Languages)
Advantageous:
Knowledge of PySpark, Apache Spark, and Databricks
Familiarity with Azure data services and cloud-based data platforms
Knowledge of the SAS programming language and SAS-based data processing environments, including modernization or migration of SAS workloads to Azure-based platforms
Familiarity with automated testing, CI/CD pipelines, and DevOps practices
Exposure to international, multicultural, or regulated environments
Benefits
This role is to be performed offsite under a B2B contract
CV submitted in English.
Your race, gender identity and expression, age ethnicity or disability make no difference in Quento we want to attract, develop, promote, and retain the best people based only on their ability and behavior.
Disclaimer: Quento collects and processes personal data in accordance with the EU General Data Protection Regulation (GDPR). We are bound to use the information provided within your job application for recruitment purposes only and not to share these with any third parties. For more details on the processing of your personal data during the Recruitment procedure, please be informed in the Recruitment Notice - QUALCO Group, before the submission of your application.

Work arrangement
No