Senior Data Test Engineer

Location: Madrid, MD, es, Remote

Company Description

Talan – Positive Innovation

Talan is an international consulting group specializing in innovation and business transformation through technology. With over 7,200 consultants in 21 countries and a turnover of €850M, we are committed to delivering impactful, future-ready solutions.

Talan at a Glance

Headquartered in Paris and operating globally, Talan combines technology, innovation, and empowerment to deliver measurable results for our clients. Over the past 22 years, we’ve built a strong presence in the IT and consulting landscape, and we’re on track to reach €1 billion in revenue this year.

Our Core Areas of Expertise

• Data & Technologies: We design and implement large-scale, end-to-end architecture and data solutions, including data integration, data science, visualization, Big Data, AI, and Generative AI.
• Cloud & Application Services: We integrate leading platforms such as SAP, Salesforce, Oracle, Microsoft, AWS, and IBM Maximo, helping clients transition to the cloud and improve operational efficiency.
• Management & Innovation Consulting: We lead business and digital transformation initiatives through project and change management best practices (PM, PMO, Agile, Scrum, Product Ownership), and support domains such as Supply Chain, Cybersecurity, and ESG/Low-Carbon strategies.

We work with major global clients across diverse sectors, including Transport & Logistics, Financial Services, Energy & Utilities, Retail, and Media & Telecommunications.

Job Description

We are looking for a Senior Test Engineer to join a data and analytics project involving modern data platforms, ETL processes and reporting solutions. The role is focused on validating data flows across architecture layers, ensuring data quality, testing exception scenarios and confirming the accuracy of calculations, aggregations and presentation layers.

This is a strong opportunity for a testing professional with solid experience in data environments, especially those familiar with medallion architecture, ETL validation and business-facing analytics solutions.

The position can be performed remotely from Spain.

What you will do:

• Design and execute test strategies for data pipelines and analytics solutions.
• Validate data flows across medallion architecture layers, such as bronze, silver and gold.
• Test ETL processes, including data quality rules, exception handling, defaulting logic and transformation accuracy.
• Verify data consistency, completeness and integrity across source and target systems.
• Validate self-service analytics outputs, including presentation logic, calculations, filters and aggregations.
• Test reporting solutions to ensure accuracy, usability and alignment with business requirements.
• Identify, document and follow up on defects, inconsistencies and data issues.
• Collaborate with data engineers, business analysts, developers and stakeholders to clarify requirements and expected results.
• Contribute senior testing criteria, risk-based thinking and quality recommendations throughout the delivery lifecycle.

Qualifications

Required:

• Senior-level experience as a Test Engineer, QA Engineer or Data Test Analyst in complex data environments.
• Hands-on experience testing medallion architecture or layered data architectures.
• Strong experience validating ETL processes.
• Solid understanding of data quality testing, including completeness, accuracy, duplication, reconciliation and consistency checks.
• Experience testing exception scenarios, defaulting rules and edge cases in data pipelines.
• Experience validating self-service analytics solutions, including calculations, aggregations, data presentation and report outputs.
• Ability to work autonomously
• Strong analytical mindset and attention to detail.
• Good communication skills to interact with both technical and business stakeholders.

Nice to have:

• Experience in banking, financial services or highly regulated environments.
• Experience with cloud-based data platforms or modern data lakehouse approaches.
• Knowledge of SQL for data validation and reconciliation.
• Experience with BI or reporting tools such as Power BI, Tableau, Qlik or similar.
• Experience working in Agile delivery teams.
• Previous exposure to automated data testing frameworks or test management tools.

Additional Information

What do we offer you?

• Full-time contract
• Remote within Spain Time zone. 
• Training and career development.
• Benefits and perks such as private medical insurance, life insurance, Language lessons, etc
• Possibility to be part of a multicultural team and work on international projects.

If you are passionate about data, development & tech, we want to meet you !