Senior Data Consultant

Date: Jan 13, 2026

Location: Kraków, PL; 30-302 Poznań, WP, PL; 61-569 Warszawa, PL; 00-839 Łódź, PL; 90-118

Working place: Hybrid

Type of contract: B2B contract

Salary range: 125 - 163 PLN net/h

Responsibilities & Qualifications

• Your responsibilities will include performance tuning and optimization of existing solutions, building and maintaining ETL pipelines, as well as testing and documenting currentawnies flows
• You will also be involved in implementing tools and processes to support data-related projects and promoting the best development standards across the team
• Design, build, test and deploy Cloud and on‑premise data models and transformations in Cloud Native or dedicated toolset
• Optimize data views for specific visualization use cases making use of schema design partitions, indexes, down‑sampling, archiving, etc. to manage trade‑offs such as performance and flexibility
• Review and refine, interpret and implement business איבtechnical requirements
• Ensure you are part of the on‑going productivity and priorities by refining User Stories, Epics and Backlogs in Jira
• Onboarding new data sources, design, build, test and deploy Cloud data ingest, pipelines, warehouse and data models/products
• At least 4‑5 years of commercial experience as a Data Engineer
• Strong Python and PySpark skills
• Strong hands‑on experience with SQL and query optimization
• Experience with ETL/ELT pipelines development, testing, and management
• Strong experience with Hadoop
• Understanding of key concepts around Data Warehousing, Data Lakes and Data Lakehouses
• Experience with Cloud Data engineering toolset, preferably GCP

Nice to have

• Experience with Java/Scala

This possibility applies to work on a B2B basis.

We are GFT Poland. WE KNOW how to tackle complex issues with innovative approach to deliver the highest value. Our reputation has been built around one simple rule: we do not overpromise, WE DELIVER. We deliver to our employees, clients and partners. WE GROW as you grow, so investing in you is our business strategy. Caring for each other is our priority. WE CARE who you are, what you need, how you feel. WE CARE to smile, have fun and develop as human beings.

Why Choose GFT?

• A culture of top performance
• Deep tech IT engineering & consulting
• 1200 skilled & top‑class experts
• 77% of the team are regular/senior
• Products that contribute to a sustainable worldartikel
• Competitive salary and benefits
• Ambitious projects, trainings and tools you need to flourish
• Google Cloud Partner of the Year - for going above and beyond for customers

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