Peter W.

I build reliable data platforms and analytics systems that turn fragmented data into something businesses can trust and act on. I’m a Senior Data Engineer / Analytics Engineer with 8+ years of experience designing, building, and operating production data systems across GCP, BigQuery, dbt, Airflow, Python, SQL, and Looker. I’m strongest when the data problem is messy: multiple systems, inconsistent definitions, unreliable pipelines, changing requirements, or reporting that people don't fully trust. I work through the full data path from ingestion and transformation to data quality, modelling, reporting, and production operations. Some of the work I’ve delivered includes: • Built a BigQuery analytics platform processing 5M+ events per month across operational, financial, CRM, and customer systems. • Designed dbt transformation layers with staging, clean and analytics models, incremental processing, testing, documentation, partitioning and clustering. • Built and operated Airflow pipelines with monitoring, freshness checks, data quality validation and production alerting. • Delivered Looker analytics and embedded dashboards used by 100+ business customers as part of a new analytics revenue stream. • Built canonical customer and account models to reconcile identities across multiple systems and create reliable reporting. • Supported data migrations and warehouse modernization with reconciliation, historical validation and production cutover planning. • Built API and third-party data integrations using Python and managed ingestion platforms such as Hevo, Fivetran and Airbyte. I also bring a strong focus on engineering judgment. I don't start by choosing a tool. I first understand what the business needs, the constraints, the existing architecture and where reliability or scalability is actually breaking down. My core areas include: GCP | BigQuery | dbt | Airflow | Looker / LookML | SQL | Python | Data Modeling | ETL / ELT | Data Warehousing | Data Quality | API Integrations | Terraform | CI/CD I’m Google Cloud Professional Data Engineer certified and PMP certified, combining hands-on engineering with structured project ownership. If you need someone who can take ownership of a data problem, work through the details, communicate clearly and leave behind a system the team can maintain, I’d be happy to discuss the project.