Senior Data Engineer Data Engineer

ABOUT US We are a multi-award-winning team of over 100 engineers, designers, and analysts based in Leicester, with development hubs in Ukraine and Spain. We specialise in bespoke software development, extended teams/staff augmentation, and support as a service.

OUR CLIENT Our partner is Europe's leading platform for buying and selling books, CDs, movies, games, and fashion. The company fosters success by bringing together a team of professionals with diverse backgrounds who collaborate to bring bold ideas to life and find innovative solutions.

We are looking for a Data Engineer to join the Evolved Ideas team.

Your mission Own the end-to-end pipeline that creates the unified customer_uuid across Books & Media and Fashion

Maintain and evolve our customer identity master data with a strong focus on accuracy, reliability, and production quality

Improve our probabilistic identity resolution model and make matching decisions measurable, transparent, and explainable

Build scalable and cost-efficient data pipelines across BigQuery, GCS, and Cloud Run Jobs

Introduce diagnostics, monitoring, and structured validation for every relevant model change

Identify and resolve edge cases in customer matching logic before they become production issues

Work closely with business and technical stakeholders to turn complex matching challenges into robust data solutions

Your Tech Stack BigQuery

SQL

Python

Airflow

Splink

Google Cloud Storage

Cloud Run Jobs

Pub/Sub

Your profile 5+ years of experience in production data engineering

Strong experience with BigQuery and advanced SQL in large-scale analytical environments





Strong Python skills for production-grade data engineering

Solid Airflow experience and a strong understanding of reliable orchestration patterns

Hands-on experience with incremental pipelines and idempotent data processing

Experience with probabilistic record linkage or entity resolution in production

Strong understanding of data quality, matching logic, and precision/recall trade-offs A careful, structured, and ownership-driven way of working

Strong communication skills and the ability to explain technical decisions clearly

English Level required: B2 - Independent users of the language, i.e. those who have the necessary fluency to communicate without effort with native speakers.

Nice-To-Have Experience with Splink and probabilistic record linkage tools

Experience with Cloud Run Jobs, GCS, and event-driven patterns in GCP

Experience with Pub/Sub as a source in data pipelines

Familiarity with data format trade-offs such as Parquet, Avro

Experience with dbt

Exposure to downstream BI use cases

Experience in e-commerce or marketplace environments

YOU CAN LOOK FORWARD TO Contributing to a high scale, complex product and seeing the real-time impact of your work

Adaptable and hybrid working

Private Medical Healthcare insurance

Training budget

Extra holidays

Challenging tasks and professional development, knowledge & best practice sharing

We are based in the Canary Islands, Spain.

To apply for this vacancy you must have the right to work in Spain (NIE and SS.SS.). The role can only be performed remotely within Spain. We are unable to hire candidates who require relocation or visa support.

📌 Senior Data Engineer at Evolved Ideas Spain (Madrid)
🏢 Evolved Ideas Spain
📍 Madrid