Senior Data Engineer

Weare amulti-award-winning team ofover 100engineers, designers, and analysts based inLeicester, with development hubs inUkraine and Spain. Wespecialise inbespoke software development, extended teams/staff augmentation, and support asaservice.
OUR CLIENT
Our partner isEurope's leading platform for buying and selling books, CDs, movies, games, and fashion. The company fosters success bybringing together ateam ofprofessionals with diverse backgrounds who collaborate tobring bold ideas tolife and find innovative solutions.
Weare looking for a Data Engineer tojoin the Evolved Ideas team.
As Senior Data Engineer, you will own one ofour most business-critical data assets: the system that links customer identities across our businesses and powers better decisions inmarketing, CRM, reporting, and analytics. You will join our Business Intelligence &Data Engineering team and work closely with Data Engineers and Business Analysts tobuild 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 astrong focus onaccuracy, 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 incustomer matching logic before they become production issues
Work closely with business and technical stakeholders toturn complex matching challenges into robust data solutions
Our Tech Stack
BigQuery
SQL
Python
Airflow
Splink
Google Cloud Storage
Cloud Run Jobs
Pub/Sub
Must-Have
5+years ofexperience inproduction data engineering
Strong experience with BigQuery and advanced SQL inlarge-scale analytical environments
Strong Python skills for production-grade data engineering
Solid Airflow experience and astrong understanding ofreliable orchestration patterns
Hands-on experience with incremental pipelines and idempotent data processing
Experience with probabilistic record linkage orentity resolution inproduction
Strong understanding ofdata quality, matching logic, and precision/recall trade-offs
Acareful, structured, and ownership-driven way ofworking
Strong communication skills and the ability toexplain 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.
We are based in the Canary Islands, Spain. To apply for this vacancy you must have the right to work in Spain (NIE andSS.SS.) The role can only be performed remotely within Spain. We are unable to hire candidates who require relocation or visa support.
Nice-To-Have
Experience with Splink and probabilistic record linkage tools
Experience with Cloud Run Jobs, GCS, and event-driven patterns inGCP
Experience with Pub/Sub asasource indata pipelines
Familiarity with data format trade-offs such asParquet, Avro
Experience with dbt
Exposure todownstreamBI use cases
Experience ine-commerce ormarketplace environments
YOU CAN LOOK FORWARD TO
Contributing toahigh scale, complex product and seeing the real-time impact ofyour work
Flexible and hybridworking
Private MedicalHealthcare insurance
Training budget
Extra holidays
Challenging tasks and professional development, knowledge &best practice sharing
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