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Sergei Mikhailov

PROFILE

Sergei Mikhailov

Sergei Mikhailov contributed to the oat-sa/tao-community and oat-sa/extension-tao-itemqti-pci repositories by delivering features and fixes that improved assessment reliability and user experience. He extended audio recording durations, consolidated audio interaction UX, and upgraded core dependencies to enhance stability and compatibility. Using PHP, JavaScript, and Composer, Sergei addressed backend and frontend challenges, such as preserving style attributes during QTI imports and refining timeout handling to reduce session errors. His work included rigorous unit testing and regression validation, ensuring robust deployments. Sergei’s approach emphasized maintainability, cross-platform consistency, and streamlined configuration management across evolving assessment technology requirements.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

12Total
Bugs
5
Commits
12
Features
5
Lines of code
95,460
Activity Months7

Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 – Ongoing maintenance and feature delivery for oat-sa/tao-community. Delivered a critical upgrade by updating the OAT TAO ItemQTI Extension to 31.6.0, aligning with the latest features and fixes. No major bugs fixed this month. Overall impact: improved product stability, backward compatibility with the latest ItemQTI capabilities, and readiness for upcoming features. Technologies demonstrated: PHP, Composer dependency management, release tagging, and regression validation.

December 2025

2 Commits • 1 Features

Dec 1, 2025

December 2025 monthly summary for oat-sa/extension-tao-itemqti-pci: Implemented Audio Recording Interaction for Non-IMS PCI with consolidated UX, recording limits, and bundled assets to support recording, playback, and visual feedback. Added production-worthy fixes and asset packaging to improve reliability and performance in PCI items.

September 2025

2 Commits

Sep 1, 2025

In September 2025, delivered reliability and maintenance improvements for the oat-sa/extension-tao-testqti extension. Key changes include robust timeout handling to permit empty responses and an upstream dependency upgrade to tao-test-runner-qti-fe v4.3.3. These updates reduce session-errors in timed assessments, improve user experience, and align the project with the latest upstream fixes, supporting smoother production runs and lower support overhead.

July 2025

4 Commits • 2 Features

Jul 1, 2025

July 2025 monthly summary focusing on key accomplishments across oat-sa/tao-community and oat-sa/extension-tao-testqti. Upgraded core dependencies for improved stability, performance, and compatibility; implemented a timeout handling bug fix with expanded tests; maintained traceability via commit references.

February 2025

1 Commits

Feb 1, 2025

February 2025: Focused on preserving data fidelity during QTI imports in the itemQTI extension. Delivered a bug fix to keep the style attribute intact when importing QTI files, along with regression tests to ensure ongoing retention of style attributes. This work improves presentation fidelity, reduces post-import adjustments, and strengthens overall import reliability across platforms. The changes support better rendering consistency and reduce support overhead.

January 2025

1 Commits

Jan 1, 2025

Monthly summary for 2025-01 focusing on stability and reliability of dependency management and service initialization in oat-sa/tao-community. Implemented a targeted dependency lockfile fix to ensure the project uses the latest stable dependencies and to prevent service initialization issues when IDs are missing.

November 2024

1 Commits • 1 Features

Nov 1, 2024

November 2024 monthly summary focusing on extending the Audio PCI recording duration for QTI Item PCI and updating the configuration registry to support a 30-minute limit. This enhances user experience for longer audio responses and reduces need for user interventions during assessments.

Activity

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Quality Metrics

Correctness88.4%
Maintainability85.0%
Architecture78.4%
Performance76.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

JSONJavaScriptPHP

Technical Skills

Backend DevelopmentComposerConfiguration ManagementDatabase MigrationDependency ManagementFrontend DevelopmentJavaScriptPHPPHPUnitUI/UX designUnit Testingback end developmentdependency managementfront end developmenttesting

Repositories Contributed To

4 repos

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

oat-sa/tao-community

Jan 2025 Feb 2026
3 Months active

Languages Used

JSONPHP

Technical Skills

Dependency ManagementComposerPHPdependency managementversion control

oat-sa/extension-tao-itemqti-pci

Nov 2024 Dec 2025
2 Months active

Languages Used

PHPJSONJavaScript

Technical Skills

Configuration ManagementDatabase MigrationJavaScriptUI/UX designfront end developmenttesting

oat-sa/extension-tao-testqti

Jul 2025 Sep 2025
2 Months active

Languages Used

PHPJavaScript

Technical Skills

PHPUnitUnit TestingBackend DevelopmentDependency ManagementFrontend Development

oat-sa/extension-tao-itemqti

Feb 2025 Feb 2025
1 Month active

Languages Used

PHP

Technical Skills

PHPback end developmentunit testing