Data Freelancer Profile

Alex Waleczek

Alex Waleczek

I am an Analytics Consultant with 10 years of experience advising on, developing & maintaining analytics systems for small start-ups & international corporations. Since 2023 I work as an independent consultant offering my expertise, without the overhead of big teams and competing priorities.

I am now advising, designing, building and maintaining analytics systems that combine and harmonise data from multiple data sources and allow businesses to see performance across Salesforce and other systems. Usually using tools like Fivetran, Snowflake, dbt, Tableau and CRMA.

I enjoy building things I can be proud of, which means I will push back on approaches and solutions that I don’t think are scalable and maintainable, offering ways to solve problems permanently rather than deploying quick-fixes.
Whether you want a whole Analytics setup and wonder where to start, a review of your existing architecture or a dashboard based on existing models, I develop solutions that last after I leave.


Secondary Specialties Data Cleaning & Preparation, Data Engineering & Infrastructure, Data Strategy & Consulting
Core Languages SQL
Data Engineering Skills Amazon Redshift, Data Orchestration & ETL, Data Warehouses, dbt, Fivetran, PostgreSQL, Relational Databases, Snowflake, SQL Server
Data Analytics Skills Business Intelligence Platforms, Excel, Google Sheets, Power BI / Fabric, Spreadsheet Tools, Tableau
Data Graphics & Design Skills Design Tools, Figma
Industry Experience Financial Services & Banking, Professional Services, Technology & Software
Education

Bachelor of Science – Information Technology

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