Senior ETL Developer (f/m/x)

Miejsce pracy: Poznań

Technologies we use

Expected

PostgreSQL
Python
SQL
PL/SQL

Optional

Apache Kafka
RabbitMQ

About the project

We are looking for an experienced Senior ETL Developer to join our team building a financial market data platform. You will be responsible for designing, developing, and maintaining high-performance data platforms that support analysis processes for FX. Working with large volumes of data, you will process up to 40 million messages daily in a real-time architecture based on PostgreSQL and Python. This position offers you the opportunity to contribute to an enterprise-class platform that handles numerous currency pairs and ensures high availability and scalability of solutions. If you are passionate about data engineering and optimizing data workflows, this opportunity may be the right fit for you.

Your responsibilities

Designing and developing high-performance data platforms using PostgreSQL and Python
Maintaining and optimizing database performance for large data volumes
Implementing ETL processes to ensure efficient data integration and transformation
Collaborating with cross-functional teams to support real-time data access and processing
Monitoring system performance and implementing necessary adjustments for scalability
Creating and managing database models, including normalization and denormalization
Utilizing PL/pgSQL for writing procedures, functions, and triggers
Ensuring data integrity and implementing archiving strategies for data retention

Our requirements

Minimum 5 years of experience working with PostgreSQL
Strong command of SQL and data modeling techniques
Hands-on mastery of PL/pgSQL, including procedures and triggers
Practical experience with database performance tuning and optimization
Experience in ETL integration and working with large data volumes
Familiarity with the Linux environment
Advanced level of Polish and English
Residency in Poland

Optional

Experience with Apache Kafka or RabbitMQ
Knowledge of Apache Airflow and CI/CD practices
Background in the banking or financial sector

What we offer

Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
Comfortable workplace – class A offices or remote work
Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
Investment in your growth – meetups, webinars, training platform and technology blog – you choose
Fantastic atmosphere created by all Sii Power People

Recruitment stages

Send your CV
Talk to us about your expectations
Learn more about our projects and choose the best
Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.

Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

Senior ETL Developer (f/m/x)

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