BI Developer (Backend)

The BI Developer (Backend) at ALDI designs, builds, and maintains robust, scalable data pipelines and backend analytics components that transform raw data into trusted, well-modelled, and high-quality datasets. Enables downstream reporting, dashboards, and analytical use cases by partnering with product teams, data owners, and stakeholders to ensure accurate, performant, and well-documented data products.

Key responsibilities

• Build and maintain data pipelines (batch/near-real-time) to support reporting and analytics.
• Develop and optimise ETL (Extract Transform Load) jobs and data transformations.
• Model data for analytics (e.g., dimensional/relational models) and support consistent metrics definitions.
• Develop and maintain reporting assets (dashboards, scheduled reports, KPI definitions).
• Write production-quality SQL and implement performance improvements (query tuning, indexing/partitioning strategies where applicable).
• Ensure data quality through validation checks, anomaly detection (as applicable), and reconciliations.
• Provide monitoring, alerting, and troubleshooting for pipeline/report failures.
• Document datasets, transformations, metric logic, data lineage, and known limitations.
• Support governance needs: permissions, dataset certification workflows (if applicable), and auditability.

The knowledge I own

• Strong SQL (joins/aggregations/window functions, data integrity and performance awareness).
• Experience building data pipelines using ETL patterns (or equivalent orchestration).
• Proficiency with Python or R.
• Familiarity with cloud based data solutions (Databricks, Snowflake, etc.).
• Hands-on experience with CI/CD concepts and automated deployment workflows.
• Understanding of data quality principles and how to implement validation (row counts, referential integrity, range checks, reconciliation).
• Production engineering mindset: monitoring, incident response, and maintainable code/process.
• Analytical and structured approach to work.
• Ability to work independently while being a strong team player.
• Fluent in English (written and spoken).

• Understanding of Agile practices and iterative development processes is a plus.
• Basic statistical thinking for validating results (e.g., distribution checks, sanity checks, trend validation) is advantageous.

The offer that would convince me

• Possibility to improve yourself in a constantly growing organization
• An above-average salary
• Intensive individual and practical training, varied and interesting tasks
• Pleasant working environments
• A secure, long-term employment opportunity

Imagine a company where ALDI’s well-known quality and reliability meet IT expertise and innovation. ALDI International IT Services (AIIS) strives to achieve this every day: as part of ALDI DX, it supports a wide range of IT and business services for the ALDI SÜD Group from Hungary.

Founded in 2012 and operating as an individual business entity since 2018, AIIS has grown to nearly 1,000 employees, with offices in Budapest, Biatorbágy, Pécs and Debrecen. Its portfolio includes IT support for ALDI stores and regional headquarters across Europe and beyond – from the UK and Ireland to Germany, Austria, Italy, Switzerland, Slovenia and Hungary.

Please use our online application and attach your resume.