Senior Data Engineer: Scale Pipelines & Trusted Metrics

bol; Utrecht; On-site; EUR 90,000 - 120,000; Full time

Job summary

bol is seeking an Expert Data Engineer to join AdInsights in the advertising domain. You will build scalable data pipelines and models to deliver reliable advertiser insights via dashboards and APIs, tackling data from multiple sources and ensuring consistency and quality as the platform grows.

You will collaborate with engineers, analysts and product managers to drive data quality, observability and performance, aligning data contracts and focusing on maintainability and impact across bol's

Qualifications

• Expert-level SQL and Python skills, with strong experience in data modelling and analytical data products.
• Experience building and operating large-scale data pipelines, preferably with Airflow and dbt or comparable tooling.
• Strong understanding of cloud data warehouses; BigQuery experience is a plus.
• A strong focus on data quality, observability, performance, cost and maintainability.
• Ability to turn complex data from multiple sources into reliable, reusable datasets and metrics.
• Ability to influence technical decisions and explain trade-offs to engineers, analysts, product managers and stakeholders.
• Experience raising the data engineering craft level of a team.
• Experience with advertiser-facing data products, dashboards, APIs, Java or Kotlin is a plus.

Responsibilities

• Define and improve the technical approach for AdInsights data pipelines, models and aggregation logic.
• Solve complex data engineering challenges in combining advertising and commerce data from multiple sources.
• Improve data quality, observability, testing and operational reliability within the team.
• Help the team make better trade-off decisions around performance, scalability, cost and maintainability.
• Align with adjacent teams on shared datasets, metric definitions, data contracts and dependencies.
• Bring data engineering knowledge to other engineers and help raise the craft level of the AdInsights team.
• Act as a technical sparring partner for engineers, analysts and product managers when decisions depend on data engineering depth.
• Translate relevant data engineering practices and learnings into practical improvements for AdInsights.
• Take ownership of difficult technical problems while helping others make better technical decisions independently.

Skills

SQL

Python

Data modelling

Analytical data products

Stakeholder communication

Data quality

Observability

Performance

Cost management

Java/Kotlin

Tools

Airflow

dbt

BigQuery

Job description

bol is seeking an Expert Data Engineer to join AdInsights in the advertising domain. You will build scalable data pipelines and models to deliver reliable advertiser insights via dashboards and APIs, tackling data from multiple sources and ensuring consistency and quality as the platform grows.

You will collaborate with engineers, analysts and product managers to drive data quality, observability and performance, aligning data contracts and focusing on maintainability and impact across bol's