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Gosia CiempielGC

Gosia Ciempiel

Analytics Engineer / Data Analyst / BI Developer

€400/day
Manacor, ES
8-15 years

Average response time: 1 hour

About Gosia

I’m a Senior Analytics Engineer & Data Analyst with 10+ years of experience helping companies turn raw, fragmented data into clear, reliable insights that drive growth. I specialize in building end-to-end analytics systems — from data pipelines and modeling to dashboards, product analytics, and strategic decision-support.

If your company needs clean data, automated workflows, meaningful dashboards, or deep product insights, I can help.

What I do best?

  • Build complete analytics workflows: ingestion → transformation → modeling → reporting
  • Design scalable data models (raw → staging → reporting) for self-service analytics
  • Create beautiful, actionable dashboards for marketing, product, operations, and leadership
  • Run product & growth analytics: A/B tests, cohorts, correlations, funnels, retention
  • Build and maintain data pipelines in GCP, Python, Airbyte
  • Integrate diverse data sources (Google Ads, Meta Ads, MongoDB, Mixpanel, Auth0)
  • Communicate insights clearly to technical and non-technical stakeholders
  • English

    Native or bilingual

  • Polish

    Native or bilingual

Can work on-site
Manacor (up to 50km)

Experience

  • Taringa,
    Analytics Engineer
    May 2022 - December 2024 (2 years and 7 months)
    • Led end-to-end data analytics processes, encompassing data engineering, data cleaning and transformation, data modeling, dashboard creation, and stakeholder presentations with strategic advisory,
    • Designed and built data models by transforming the data from raw layer to reporting data layer to enhance self service analytics,
    • Provided cross-team data support to marketing and product teams, performing A/B testing, correlation analysis, and cohort analysis to drive growth strategies. Focus areas included acquisition, user retention, conversion optimization, monetization, and engagement metrics,
    • Designed and implemented analytics event tracking for Google Analytics and Mixpanel, ensuring accurate data collection and actionable insights,
    • Played a pivotal role in the development of the entire analytical database for a Web3 social media app startup, including database design, implementation, and maintenance within a microservice-based architecture,
    • Executed data engineering tasks leveraging tools such as GCP, Python, and Airbyte, ensuring robust and efficient data pipelines and processing workflows,
    • Successfully integrated diverse data sources, including Google Ads, Meta Ads, MongoDB, and Mixpanel, Auth0 demonstrating adaptability in handling complex and varied data environments,
    • Used agile methodologies, leveraging tools like Jira and Confluence to foster collaboration and ensure timely delivery of projects.
    ETL Google cloud SQL Data analysis DBT
  • MicroStrategy Poland,
    Senior Business Intelligence Consultant
    RETAIL (LARGE RETAILERS)
    March 2014 - April 2022 (8 years and 1 month)
    Warsaw, Poland
    • Designed, developed and deployed comprehensive dashboards for enterprise clients using MicroStrategy,
    • Translated complex business requirements into actionable BI solutions, optimizing reporting efficiency,
    • Partnered with cross-functional teams, including data engineering and business stakeholders, to define and implement data governance standards and KPIs,
    • Worked closely with clients to understand their business needs and deliver customized analytics solutions,
    • Optimized the performance of MicroStrategy dashboards by implementing efficient data modeling and SQL query optimizations, reducing load times,
    • Established best practices for BI development and documentation, ensuring consistent and high-quality deliverables,
    • Managed end-to-end BI implementation projects, coordinating with teams to meet deadlines and ensure delivery within scope and budget.
    • Mentored junior analysts and BI developers, fostering skill development and knowledge sharing within the team.
    SQL Data visualization BigQuery

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Education

  • Bachelor of Science
    University of Technology
    2013
    Bachelor of Science
  • Bachelor of Science
    VIA University College
    2012
    Bachelor of Science

Skill set

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