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Location

Poland

Rate

$30  / per hour

Years of experience

5+

About

As a Talend/Snowflake Developer with over three years of experience at Billennium, I specialize in building and managing data pipelines using technologies like Talend Studio, Snowflake, AWS S3, and MongoDB. My role involves loading and processing data sets, whether full or incremental, to meet the specific requirements of various projects. I leverage tools like dbt and Data Vault to optimize data operations and ensure efficient data management. My expertise in ETL processes, combined with my hands-on experience with cloud services and data warehousing, allows me to deliver robust and scalable data solutions. Before my current role, I gained extensive experience in data warehousing and quality assurance, particularly during my time at Crédit Agricole, where I led a team of Data Warehouse Testers and managed large-scale quality assurance projects. My background includes developing enterprise data warehouses and coordinating complex testing environments. I have a strong foundation in SQL and have worked with various ETL tools like IBM InfoSphere and Talend. My career reflects a commitment to ensuring data integrity and optimizing data processes across multiple platforms.

Tech Stack

Snowflake, Agile, Amazon S3, ETL, MongoDB, SQL, Talend

Experience

  • Building and managing data pipelines using Talend, Snowflake, AWS S3, and MongoDB to efficiently load and process data.
  • Leading the implementation of Enterprise Data Warehouses (EDW), including non-persistent and persistent data layers, as well as designing dimensions and facts.
  • Managing a team of Data Warehouse Testers at Crédit Agricole, including planning, delegating tasks, and overseeing their professional development.
  • Coordinating quality assurance projects in the data warehouse area, including planning tests, managing test environments, and collaborating with external vendors.
  • Utilizing ETL tools like Talend Studio, IBM InfoSphere DataStage, and dbt to optimize data extraction, transformation, and loading processes.
  • Serving as a Data Architect responsible for designing data warehouse structures and managing data integration using tools like SQL Server and IBM Cognos Data Manager.
  • Preparing and managing User Acceptance Tests (UAT) to ensure the final product meets business requirements and maintains data integrity.

Employment history

Talend/Snowflake Developer, Billennium May 2021 – Present
  • Developing and managing data pipelines using Talend, Snowflake, AWS S3, and MongoDB.
  • Loading and processing full or incremental data sets based on project requirements.
  • Utilizing dbt and Data Vault for optimized data operations and management.
  • Implementing ETL processes to ensure efficient data integration and transformation.
Senior Systems Developer, Accelerated Enrollment Solutions April 2019 – April 2021
  • Led the implementation of Enterprise Data Warehouses (EDW) with non-persistent and persistent layers.
  • Designed dimensions, facts, and views to support data warehousing needs.
  • Managed data integration using Talend, Snowflake, Oracle, and SQL Server.
  • Optimized data extraction and transformation processes to improve system performance.
Data Architect, Accelerated Enrollment Solutions January 2018 – March 2019
  • Designed and managed data warehouse structures using IBM InfoSphere DataStage and SQL Server.
  • Developed ETL processes to support data integration and reporting requirements.
  • Collaborated with cross-functional teams to implement data-driven solutions.
  • Ensured data accuracy and consistency across all data warehouse layers.
Quality Assurance Team Manager (Data Warehouse), Crédit Agricole July 2011 – January 2018
  • Managed a team of Data Warehouse Testers, overseeing their professional development and performance.
  • Coordinated quality assurance projects, including planning and executing test cycles.
  • Collaborated with external vendors to ensure software quality and compliance.
  • Prepared and managed User Acceptance Tests (UAT) for data warehouse implementations.
Software Quality Specialist, Crédit Agricole February 2007 – June 2011
  • Performed testing activities for credit card authorization systems using Base24 and EMV technologies.
  • Tested settlement file processing systems, ensuring accuracy and reliability.
  • Collaborated with development teams to identify and resolve software issues.
  • Utilized tools like Remedy, TestLink, Jira, and SVN for managing test cases and reporting defects.
Software Quality Specialist, PYTON Management November 2005 – January 2007
  • Conducted software quality testing for various applications, ensuring compliance with industry standards.
  • Developed and executed test cases to identify and resolve defects.
  • Collaborated with development teams to improve software quality.
  • Reported and tracked software issues using testing tools.

Education history

Technical University of Wroclaw 2006 - 2008 Computer Software Engineering
University of Wroclaw 2003 - 2006 Bachelor's degree, Economics
University of Wroclaw 2000 - 2003 Bachelor of Applied Science (B.A.Sc.), Computer Science
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