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Senior Data Engineer

Hack The Box • Greece
Relocation
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AI Summary

Own and evolve data pipelines on GCP, delivering clean, trustworthy data across the organisation. Design and operate batch and streaming pipelines, orchestration, modelling, and ML feature workflows. Requires strong GCP/BigQuery, Python, SQL, Airflow, and production data engineering experience.

Key Highlights
Own end-to-end GCP data pipelines across streaming and batch workloads.
Drive migration from Snowflake to BigQuery, Bigtable, Pub/Sub, and Dataflow.
Partner with ML engineers on feature pipelines, drift monitoring, and retraining.
Work remotely across Europe or relocate to Athens with support.
Use Python, SQL, Airflow, dbt, Docker, and Kubernetes.
Key Responsibilities
Design and build batch and streaming pipelines on Dataflow, Pub/Sub, and Kafka feeding BigQuery, Bigtable, and ClickHouse.
Help drive the migration off Snowflake onto the GCP-native stack and retire shadow pipelines.
Own the orchestration layer in Airflow, including SLAs, retries, and data quality gates.
Model data for analytics and ML, including feature pipelines for training and low-latency online inference.
Partner with ML engineers on feature stores, drift monitoring, and retraining workflows.
Capture requirements from stakeholders and translate them into pragmatic, well-scoped data products.
Continuously improve data quality, reliability, observability, and cost efficiency.
Identify new data sources worth acquiring and integrate them cleanly.

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Technical Skills Required
GCP Python SQL
Benefits & Perks
10% relocation bonus on annual salary
50% tax reduction on income as part of relocation
Accommodation support during first few weeks
Fully remote across Europe or hybrid option

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Nice to Have
Experience migrating off legacy warehouses (Snowflake, Redshift, Synapse) onto cloud-native stacks.

Job Description

Welcome! Super excited you dropped by 🥳

Let's redefine cyber security expertise standards and connect business - community through highly engaging hacking experiences. (Find out more insights about Hack The Box culture in our career site).

The core mission of the Senior Data Engineer:

You will own and evolve our data pipelines on GCP — building new ones, hardening existing ones, improving data quality, and making clean, trustworthy data available across the organisation. You'll work end-to-end on streaming and batch pipelines, from CDC and event ingestion through transformation, serving, and the feature layer that powers our ML and AI products.

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Job Overview
Posted Nov 03, 2026
Employment Full-time
Experience Mid-Senior level
Location Greece
Category Data Science
Company Hack The Box
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