Senior Graph Engineer (Adtech)

TL;DR

Senior Graph Engineer (Adtech/Martech): Designing and implementing sophisticated graph schemas and data pipelines for the Open Intelligence initiative with an accent on knowledge representation and scalability. Focus on building temporal and event-driven graph models, optimizing query performance, and integrating complex marketing data ecosystems.

Location: Hybrid in Copenhagen, Denmark (average 4 days/week in office)

Company

hirify.global is a leading global creative company, part of WPP, specializing in brand experience, customer experience, and commerce for blue-chip clients.

What you will do

• Design and implement sophisticated graph schemas and data models for the marketing and adtech ecosystem.
• Build and maintain production-grade data ingestion pipelines using Scala and Spark.
• Develop temporal and event-driven graph models to capture relationship evolution over time.
• Collaborate with Product teams to translate business needs into technical graph evolutions and maintainable code.
• Design and build graph data governance and quality frameworks to ensure consistency across global markets.
• Mentor junior team members and foster a graph-thinking mindset within the engineering team.

Requirements

• 6+ years of experience in data engineering with a strong focus on graph databases and solutions.
• Expertise in advanced graph modeling and querying using Cypher, GQL, or Gremlin.
• Proficiency in SQL, Python, or Scala for data wrangling and preparing data for graph ingestion.
• Deep understanding of adtech and martech data and terminology.
• Experience with entity resolution and identity graph design, including deduplication and canonicalization.
• Knowledge of modern data ecosystems like Databricks, Snowflake, or BigQuery and cloud platforms (GCP/AWS).

Nice to have

• Expertise in Neo4J or Graphwise GraphDB.
• Familiarity with RDF, triplestores, or semantic web technologies.
• Previous team lead or project management experience.

Culture & Benefits

• Supportive and inclusive culture built on trust, ambition, and collaboration.
• Access to world-class learning and development opportunities across the global WPP network.
• Competitive salary and benefits with a strong focus on employee wellbeing.
• Hybrid work environment combining remote flexibility with in-office collaboration.