Senior ETL Data Analyst — Multi-Client Pipelines

Jobtailor

Warszawa

On-site

PLN 160,000 - 210,000

Full time

3 days ago

Be an early applicant

Application generator

Stand out for this role — generate a tailored resume and cover letter in about a minute.

Get past ATS filters

Job summary

Jobtailor in Warszawa, Poland seeks an experienced ETL/Data Engineer to design and maintain ETL pipelines across multiple client accounts, clean and reconcile multi-source exports, and write production Python scripts for data transformation and reporting.

You will integrate with ad-platform APIs, including Meta and TikTok, mentor junior team members on data hygiene, ensure quality before client delivery, and collaborate with analytics and Strategic Intelligence teams to scope new custom

Qualifications

Advanced SQL and Python skills.
Real ETL experience, including cleaning, reconciling, and dedup logic.
API integration experience.
Ability to scope and own technical work across multiple clients with minimal oversight.
Exposure to identity-resolution or customer-match style data work (nice to have).
Familiarity with warehouse tools such as Snowflake or workflow automation such as n8n (nice to have).
Basic stats or marketing-science literacy (nice to have).

Responsibilities

Design and maintain ETL pipelines across multiple client accounts.
Clean, reconcile, and join messy multi-source exports.
Write production Python scripts for data transformation, taxonomies, and custom reports.
Integrate with ad-platform and partner APIs, including Meta and TikTok.
Mentor junior team members on data hygiene.
Quality-control work before client delivery.
Partner with analytics and Strategic Intelligence teams to scope new custom deliverables.