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leonid.stashevsky

PROFILE

Leonid.stashevsky

Worked across multiple repositories including ktorio/ktor, modelcontextprotocol/kotlin-sdk, and JetBrains/Exposed, focusing on backend development, API design, and build automation. Delivered correctness improvements for HTTP handling in Ktor by refining content length and compression header logic for OPTIONS and HEAD requests, using Kotlin and Gradle. Established a Kotlin SDK scaffold supporting multiple transports and modernized CI/CD pipelines for automated publishing and policy compliance. Enhanced concurrency robustness in Ktor’s CIO server by eliminating data races with per-call buffer allocation and regression testing. Updated API documentation in Exposed to reflect evolving library structure, improving clarity and onboarding for developers integrating with the API.

Overall Statistics

Feature vs Bugs

71%Features

Repository Contributions

14Total
Bugs
2
Commits
14
Features
5
Lines of code
1,006,047
Activity Months4

Work History

May 2026

1 Commits

May 1, 2026

Month 2026-05: Concurrency robustness and reliability improvements in ktorio/ktor CIO server. Delivered a critical thread-safety fix for BadRequestPacket handling and added regression tests to protect against data races under high load. No external API changes; performance and stability gains for high-concurrency workloads.

June 2025

1 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary focusing on key accomplishments for JetBrains/Exposed. Delivered focused API documentation updates to reflect the latest library version and structural changes, improving developer clarity and onboarding. No major bugs recorded this month; emphasis on documentation quality and alignment with the evolving API surface.

January 2025

1 Commits • 1 Features

Jan 1, 2025

January 2025 monthly summary for modelcontextprotocol/kotlin-sdk. Delivered a formal software release (Version 0.3.0) by bumping the version in build.gradle.kts from 0.2.0 to 0.3.0. No functional code changes were implemented this month. This release improves downstream compatibility and release readiness, signaling stability for clients and downstream integrations.

December 2024

11 Commits • 3 Features

Dec 1, 2024

December 2024 performance highlights across two repositories: ktorio/ktor and modelcontextprotocol/kotlin-sdk. Delivered correctness improvements for cross-engine HTTP handling, established a solid Kotlin SDK scaffold with multi-transport prototypes, and modernized the publishing pipeline and governance posture. These efforts improved runtime reliability for clients on OPTIONS/HEAD, set up an extensible SDK foundation, and reduced release friction through automated publishing and policy updates.

Activity

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Quality Metrics

Correctness92.2%
Maintainability91.6%
Architecture90.0%
Performance84.2%
AI Usage22.8%

Skills & Technologies

Programming Languages

BatchGradleHTMLJavaKotlinMarkdownShellTypeScriptYAML

Technical Skills

API DevelopmentAPI designBackend DevelopmentBuild AutomationBuild ConfigurationBuild ManagementBuild System ConfigurationCI/CDClient-Server ArchitectureCommunity ManagementCoroutinesDependency ManagementGitHub ActionsGradleHTTP Protocol

Repositories Contributed To

3 repos

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

modelcontextprotocol/kotlin-sdk

Dec 2024 Jan 2025
2 Months active

Languages Used

BatchGradleJavaKotlinMarkdownShellTypeScriptYAML

Technical Skills

Build AutomationBuild ConfigurationBuild System ConfigurationCI/CDClient-Server ArchitectureCommunity Management

ktorio/ktor

Dec 2024 May 2026
2 Months active

Languages Used

JavaKotlin

Technical Skills

API DevelopmentBackend DevelopmentClient-Server ArchitectureHTTP ProtocolNetwork ProgrammingKotlin

JetBrains/Exposed

Jun 2025 Jun 2025
1 Month active

Languages Used

HTML

Technical Skills

API designdocumentationtechnical writing