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PROFILE

Goal

During a two-month period, Psykibaek contributed to core infrastructure in the dotnet/efcore, dotnet/runtime, and Kubernetes repositories, focusing on backend reliability and developer experience. They enhanced Entity Framework Core by improving error reporting for spatial and HierarchyId types and refined SQL Server decimal scaffolding for explicit precision and scale. In dotnet/runtime, Psykibaek improved HTTP/2 error diagnostics and stabilized JIT optimization for short-circuit expressions using C# and C++. Their work in Kubernetes involved expanding fuzz testing for DRA API conversions in Go, fixing cross-version field compatibility, and increasing test coverage, demonstrating depth in API development, testing, and backend engineering.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

10Total
Bugs
4
Commits
10
Features
4
Lines of code
1,139
Activity Months2

Work History

March 2026

7 Commits • 2 Features

Mar 1, 2026

Month: 2026-03 Overview: Strong focus on API conversion reliability, fuzz testing coverage, and JIT optimization stability across Kubernetes and .NET runtimes. Delivered automated fuzz tests for DRA API conversion, tightened cross-version field conversions, and improved runtime behavior under edge cases.

February 2026

3 Commits • 2 Features

Feb 1, 2026

February 2026 monthly summary focusing on key accomplishments across two core repositories. Delivered features and fixed critical issues that improve developer experience, reliability, and SQL scaffolding quality, with strong emphasis on business value and maintainability. Key achievements: - EF Core contributions: Enhanced error reporting for spatial and HierarchyId types when provider is not configured; ensured clearer guidance for enabling spatial services and HierarchyId support. Also added SQL Server decimal scaffolding with explicit precision and scale, updating type mapping and related tests to validate the behavior. - Runtime improvements: Improved HTTP/2 error reporting by propagating the original abort exception during setup, enabling meaningful diagnostics for server-initiated disconnects; added tests to cover the new behavior and maintain overall test suite health.

Activity

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Quality Metrics

Correctness96.0%
Maintainability82.0%
Architecture90.0%
Performance84.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

C#C++Go

Technical Skills

API DevelopmentAPI TestingC# DevelopmentC++ DevelopmentEntity FrameworkEntity Framework CoreFuzz TestingGoJIT CompilationKubernetesSQL ServerTestingUnit Testingback end developmentbackend development

Repositories Contributed To

4 repos

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

kubernetes/dynamic-resource-allocation

Mar 2026 Mar 2026
1 Month active

Languages Used

Go

Technical Skills

API DevelopmentAPI TestingFuzz TestingGoKubernetesTesting

kubernetes/kubernetes

Mar 2026 Mar 2026
1 Month active

Languages Used

Go

Technical Skills

API DevelopmentAPI TestingFuzz TestingGoKubernetesTesting

dotnet/efcore

Feb 2026 Feb 2026
1 Month active

Languages Used

C#

Technical Skills

Entity FrameworkEntity Framework CoreSQL Serverback end developmentbackend developmentdatabase management

dotnet/runtime

Feb 2026 Mar 2026
2 Months active

Languages Used

C#C++

Technical Skills

backend developmentexception handlingunit testingC# DevelopmentC++ DevelopmentJIT Compilation