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Stefan Jumarea

PROFILE

Stefan Jumarea

Worked on the cs-pub-ro/hardware-software-interface and cs-pub-ro/operating-systems repositories, delivering features that improved documentation, workflow automation, and course infrastructure. Developed markdown-based grading policies and planning documents to clarify expectations and streamline onboarding. Implemented automated CI/CD pipelines using GitHub Actions, Docker, and Jekyll for reliable site deployment and artifact delivery. Enhanced lab accessibility and archival processes with Python scripting and YAML-driven workflows, ensuring reproducibility and maintainability. Contributed low-level programming assignments involving ELF file formats and memory management in C and Bash, supporting hands-on learning. Focused on traceability, version control hygiene, and reducing manual effort through disciplined automation and documentation.

Overall Statistics

Feature vs Bugs

89%Features

Repository Contributions

14Total
Bugs
1
Commits
14
Features
8
Lines of code
1,473
Activity Months7

Work History

March 2026

1 Commits • 1 Features

Mar 1, 2026

March 2026 performance summary for the hardware-software interface workstream. Focused on delivering governance- and planning-related improvements that are easy to trace and reuse across teams. Delivered a concrete enhancement to the Rules & Grading section by linking the Year Planning Document for 2025-2026, improving planning visibility and onboarding efficiency.

October 2025

7 Commits • 1 Features

Oct 1, 2025

October 2025 monthly summary for cs-pub-ro/operating-systems. Focused on improving accessibility of lab materials and strengthening automation reliability for lab artifact delivery. Delivered Lab Archive Accessibility and Navigation Improvements across Lab 1–Lab 5 with documentation updates, new lab2.md and lab4.md, updated READMEs, and a reworked config structure. Implemented Lab Archive Generator Workflow Robustness Fix to improve archive handling and avoid conflicts by removing .zip from gitignore, archiving only directories containing 'drills', and removing outdated archives before generating new ones. These efforts reduced onboarding friction, accelerated access to materials, and improved maintainability and repeatability of the lab delivery process. Technologies and skills demonstrated include Git versioning hygiene, CI/CD/workflow tuning, documentation and config management, and automation for reliable artifact delivery.

September 2025

2 Commits • 2 Features

Sep 1, 2025

September 2025 monthly summary for cs-pub-ro/operating-systems. Key work delivered two high-impact features: (1) Virtual Machines Resource Links Updated for 2025-2026 — markdown resource links updated to the new VM image versions for the 2025-2026 academic year, ensuring users access the correct and up-to-date VM resources; (2) Automated Lab Archiving Workflow — automated workflow archives modified lab files on pushes to main, creating lab-specific zip archives and pushing them to the lab-archives branch to preserve historical content. Impact: improved accuracy and accessibility of VM resources for students and instructors, enhanced traceability and reproducibility of lab content, and reduced manual archival effort. Business value includes smoother onboarding, lower support overhead, and better compliance with historical data retention. Technologies/skills demonstrated: Git-based workflow automation, CI/automation scripting, YAML-driven configurations, Python scripting (gen-zip.py) for archive generation, archive management and branch operations.

August 2025

1 Commits • 1 Features

Aug 1, 2025

August 2025 monthly summary for cs-pub-ro/operating-systems: Delivered a structured ELF Loader assignment framework to enable hands-on loader development and standardized evaluation. The assignment covers objectives, implementation plan, support code, and step-by-step loading guidance for syscall-only, non-PIE, and PIE ELF binaries, with explicit grading criteria and debugging tips. The work is supported by commit a334efc04af916fe2fddbe59a4881cbecd0480f1. No major bugs were fixed this month in this repository. Impact includes improved learning outcomes, clearer expectations for students, and a maintainable baseline for future extensions. Technologies/skills demonstrated include ELF binary formats, PIE vs non-PIE handling, statically linked PIE considerations, loader design concepts, thorough documentation, and disciplined version control.

May 2025

1 Commits • 1 Features

May 1, 2025

May 2025 – cs-pub-ro/hardware-software-interface: Implemented automated GitHub Pages deployment workflow (main → gh-pages) with Docker image build and Jekyll site generation prior to publish. This workflow enables hands-off, consistent live-site publishing and reduces the risk of human error.

March 2025

1 Commits • 1 Features

Mar 1, 2025

March 2025 monthly summary for cs-pub-ro/hardware-software-interface highlighting business value and technical accomplishments. Delivered a policy-driven feature that clarifies final-exam eligibility by enforcing a minimum 2.5 points from semester activities. This reduces ambiguity, aligns with curriculum requirements, and lowers student support inquiries. No major bugs reported this month in the repository.

February 2025

1 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary for cs-pub-ro/hardware-software-interface. Delivered the Rules and Grading Policy Documentation, establishing a baseline course evaluation policy in a single markdown document. This work enhances clarity for students and staff, sets expectations for grading and exams, and reduces ambiguity and support queries. The commit provides traceability and ensures policy documentation is part of the project docs.

Activity

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Quality Metrics

Correctness97.2%
Maintainability96.4%
Architecture96.4%
Performance92.8%
AI Usage20.0%

Skills & Technologies

Programming Languages

AssemblyBashCMakefileMarkdownPythonShellXMLYAML

Technical Skills

Build SystemsCI/CDConfiguration ManagementDebuggingDockerDocumentationELF File FormatGitGitHub ActionsJekyllLow-Level ProgrammingMemory ManagementOperating System DevelopmentPython DevelopmentPython Scripting

Repositories Contributed To

2 repos

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

cs-pub-ro/operating-systems

Aug 2025 Oct 2025
3 Months active

Languages Used

AssemblyCMakefileShellXMLBashMarkdownPython

Technical Skills

Build SystemsDebuggingELF File FormatLow-Level ProgrammingMemory ManagementOperating System Development

cs-pub-ro/hardware-software-interface

Feb 2025 Mar 2026
4 Months active

Languages Used

MarkdownYAML

Technical Skills

DocumentationCI/CDDockerGitHub ActionsJekylldocumentation