Senior Data Engineer (Snowflake)

Salary: 130 - 185 PLN/h net+vat B2B

Work model: 100% remote or hybrid with visits in our offices in Gdynia / Warsaw / Kraków / Rzeszów

Why choose this offer?

• Strategic platform ownership – define the core Snowflake-based architecture and data model for a business-critical data platform supporting analytics and compliance.
• Complex, real-world data challenges – build and optimise ETL/ELT pipelines across trading, finance, risk, CRM, and external data sources in a regulated fintech environment.
• High business exposure – collaborate directly with Trading, Finance, Marketing, and Compliance teams, translating business and regulatory requirements into scalable data solutions.

Project

Our client is building a next-generation data platform to power trading, operational, and marketing intelligence. We are seeking a Senior Data Engineer to design and build a Snowflake-based Data Lakehouse, establishing a modern data ecosystem that supports advanced analytics, compliance, and decision-making across the business. This is a high-impact role for an experienced engineer with a track record of architecting and implementing scalable data platforms ideally in financial or trading environments who can lead the build-out of our data infrastructure from the ground up. 

Key Responsibilities

• Design and build a Snowflake-centric Data Lakehouse integrating structured, semi-structured, and unstructured data
• Develop robust ETL/ELT pipelines that ingest and transform data from multiple internal systems (trading, CRM, finance, risk, etc.) and external APIs
• Implement data models, schemas, and transformation frameworks optimised for analytical and regulatory use cases
• Define and implement standards for data validation, cataloguing, and documentation
• Maintain high data integrity, privacy, and security aligned with FCA and GDPR requirements
• Monitor and optimise query performance and storage efficiency
• Partner with business units (Trading, Finance, Marketing, Compliance) to capture data requirements and translate them into robust technical solutions
• Define the core Snowflake-based architecture and data model
• Build foundational ETL/ELT pipelines from primary systems and third-party data sources
• Establish automated CI/CD workflows for data operations
• Deliver the first version of the Clients’ Data Lakehouse to support BI and compliance analytics

Skills & Experience

• Proven experience designing and delivering DWH / Delta Lakehouse using Snowflake
• Strong SQL and data modelling expertise (star/snowflake schemas, dimension/al modelling)
• Experience integrating SQL/NoSQL databases and external APIs as data sources
• Proficiency in Python or another scripting language
• Familiarity with orchestration and transformation frameworks
• Hands-on experience or a strong understanding of data analysis, visualisation, and operational reporting tools is highly desirable
• Experience in financial services, trading, or fintech environments preferred
• Excellent communication skills and ability to translate business requirements into scalable data architecture
• Degree in Computer Science, Data Engineering, or related field
• 5-8 years of hands-on experience in data engineering or infrastructure development

Technologies you'll work with

• Snowflake
• ETL/ELT
• SQL
• NoSQL
• Python

Client – why choose this particular client from the Jit portfolio?

About Jit Team

The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme.

Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.