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.
As Senior Data Engineer, you will own one of our most business-critical data assets: the system that links customer identities across our businesses and powers better decisions in marketing, CRM, reporting, and analytics. You will join our Business Intelligence & Data Engineering team and work closely with Data Engineers and Business Analysts to build reliable, scalable, and trustworthy customer identity data. 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
Our Tech Stack * BigQuery * SQL * Python * Airflow * Splink * Google Cloud Storage * Cloud Run Jobs * Pub/Sub
Your profile Must-Have: * 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
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 * German language skills
YOU CAN LOOK FORWARD TO * Contributing to a high scale, complex product and seeing the real-time impact of your work * Healthcare insurance * Educational budget * Challenging tasks and professional development, knowledge & best practice sharing
READY TO JOIN US? Apply now and become part of Evolved Ideas team!
