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Piotr Findeisen

PROFILE

Piotr Findeisen

Worked on dbt-labs/dbt-core, delivering six features and one bug fix focused on backend data engineering and performance. Enhanced code quality by optimizing string conversions and implementing lazy evaluation for fallback values using Rust. Improved BigQuery SLT performance by eliminating temporary tables, resulting in faster and more reliable query execution. Refined Goldie duration output by tightening regex parsing and excluding sub-microsecond durations. Upgraded dependencies and synchronized toolchains for Rust 1.89 compatibility, while removing unused packages. Introduced a new assert_contains! macro to standardize test error reporting. Addressed subquery select resolution bugs, ensuring accurate relation alias handling and error messages.

Overall Statistics

Feature vs Bugs

86%Features

Repository Contributions

11Total
Bugs
1
Commits
11
Features
6
Lines of code
2,695
Activity Months1

Your Network

188 people

Shared Repositories

128
mani-dbtMember
Will SargentMember
Colin RogersMember
Chris MorrisetteMember
Zach RMember
copilot-swe-agent[bot]Member
@TTMember
Pengcheng ChenMember
eric baumannMember

Work History

September 2025

11 Commits • 6 Features

Sep 1, 2025

September 2025 across dbt-labs/dbt-core focused on performance, reliability, and tooling upgrades. Key outcomes included: 1) Code Quality and Performance Improvements: optimized string conversions and lazy evaluation for fallback values (commits 8e61968601cf6ac27dd2b23ee49c9136ae6db208; e7b4deb9c15028bf395f709857af544d166b5037). 2) Goldie Duration Output Refinement: exclude durations under 1 microsecond and tighten duration parsing (commit e56e3704d3647d496bbe45c3dfbf0d411dfb004b). 3) BigQuery SLT Performance Enhancement: run queries without temporary tables, improving speed and reliability (commit 5f3239beb302692aab577186aec6124b628a2286). 4) Maintenance: Dependency Upgrades and Toolchain Compatibility: upgraded dependencies and aligned tooling with Rust 1.89, removed unused dependencies, and synchronized workspace versions (commits 360590926dcb6792b4a7d977ecc7882e8ebe81cc; 06414d0b42e13b33035186364d4c8f7bbf9fff92; ed167eb99dfe48928cfd52b59177f762f10e277b; 44314f9f69214386e5cac20a7cf3fb32823c47e9). 5) Fusion Subquery Select Resolution Bug Fix: ensure correct select resolution from subqueries and honor relation aliases with accurate error reporting (commit 2e05ed36d90d86b6e8f1d5dedad37fe380f29789).

Activity

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Quality Metrics

Correctness96.4%
Maintainability92.8%
Architecture92.8%
Performance94.6%
AI Usage21.8%

Skills & Technologies

Programming Languages

Rust

Technical Skills

BigQueryCode OptimizationCode Quality ImprovementConfiguration ManagementDependency ManagementError HandlingPerformance OptimizationRustRust programmingSQLSoftware Optimizationbackend developmentdata engineeringdata processingdata validation

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

dbt-labs/dbt-core

Sep 2025 Sep 2025
1 Month active

Languages Used

Rust

Technical Skills

BigQueryCode OptimizationCode Quality ImprovementConfiguration ManagementDependency ManagementError Handling