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Senior Data Engineer

1 miesiąc temu

Warszawa, Mazovia, Polska Opensignal Pełny etat
Job Title: Senior Data Engineer

We are seeking a highly skilled Senior Data Engineer to join our Market Performance Group in transforming our real-world raw data into valuable and credible industry leading metrics that provide insights to our analysts and our customers.

About the Role

As a Senior Data Engineer, you will be responsible for owning and improving our data pipelines in MS SQL/DBT, Python or Scala Spark. You will assemble large, complex data sets that meet business requirements, with engineering best practices in mind. You will build scalable and resilient data infrastructure, as well as tools to extract and transform data used by stakeholders and customers.

Key Responsibilities
  • Design and implement data pipelines using MS SQL/DBT, Python or Scala Spark
  • Develop and maintain large, complex data sets that meet business requirements
  • Build scalable and resilient data infrastructure
  • Work closely with data scientists and engineers to create and evolve products that measure market dynamics in the Telecommunication space
Requirements
  • 5+ years of advanced SQL and Stored Procedures experience
  • 3+ years of experience with MS SQL
  • 3+ years of experience in writing unit tests
  • Strong analytic skills in working with unstructured datasets
  • Experience in root cause analysis of data when asked to answer specific business questions
  • Experience working with cross-functional teams
  • Strong communication and collaboration skills
  • Bachelor's degree
  • English (B2 or higher)
Nice to Have
  • Experience with DBT
  • Experience with building and optimizing data pipelines using Python Spark or Scala Spark
  • Experience with AWS cloud services like EC2, S3, EMR or equivalent
  • Experience with Redshift, Aurora, or PostgreSQL
  • Experience with data pipeline / workflow tools i.e. Apache Airflow
  • Experience in AWS solution architecture
  • Experience in implementing complex clustering and classification models on large datasets to support new product development
About Us

Opensignal is the leading global provider of independent insight and data into network experience and market performance. Our user-centric approach allows communication providers to constantly improve their network and maximize commercial performance. Leading analysts, investors and financial institutions place a high value on our independent analysis and we are regular contributors to their reports.

Real network experience is our focus and ultimately that's what influences customer choice. Our mission is to advance connectivity for all and here at Opensignal, the team is leading the industry in enabling operators to link their network experience and market performance in a way that has never before been possible.

We are an equal opportunity employer dedicated to building an inclusive and diverse workforce.

Benefits

We believe we are stronger when we not only celebrate our many differences, values, and voices but include them in everyday practice. Having a diverse and inclusive culture is essential, which is why we offer a flexible approach to work-life balance, operating in a remote-hybrid way. We also offer an attractive range of additional benefits, including:

  • 95% remotely - the team meets in the Warsaw office for 1 day/month
  • Warsaw office at Marina Mokotów in a leafy and quiet estate just around the corner from Pole Mokotowskie
  • Kitchen, free coffee, shower, summer barbecues
  • Comprehensive private family health care package
  • Multisport Card
Tech Stack

SQL, SQL Stored Procedures, MS SQL, DBT, Python or Scala Spark, Redshift, Airflow

Salary Range

23 000 PLN – 27 000 PLN on B2B