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Mazen Selim

PROFILE

Mazen Selim

Over ten months, contributed to awslabs/amazon-eks-ami, bottlerocket-os/bottlerocket, and kubernetes/cloud-provider-aws by delivering features and stability improvements for cloud infrastructure and release engineering. Focused on build environment maintenance, CI/CD workflow hardening, and kernel module management, using Go, Bash, and YAML to automate deployment pipelines and system configuration. Enhanced GPU driver packaging, enabled dynamic AWS endpoint handling, and improved network reliability for EKS AMIs. Addressed licensing hygiene and release traceability, while supporting high-performance computing with EFA kernel module integration. The work emphasized reproducibility, security, and operational flexibility, resulting in more reliable, maintainable, and scalable cloud-native deployments across AWS environments.

Overall Statistics

Feature vs Bugs

82%Features

Repository Contributions

34Total
Bugs
4
Commits
34
Features
18
Lines of code
3,728
Activity Months10

Work History

April 2026

2 Commits • 2 Features

Apr 1, 2026

April 2026 monthly summary for awslabs/amazon-eks-ami: Focused on release engineering and performance readiness. Delivered a comprehensive v20260311 release notes entry and default enabling of the EFA kernel module to improve HPC performance. No major bugs fixed this month.

March 2026

9 Commits • 4 Features

Mar 1, 2026

Monthly summary for 2026-03 highlighting key features delivered, major bugs fixed, and overall impact across three repositories. Across awslabs/amazon-eks-ami, bottlerocket-os/bottlerocket, and bottlerocket-os/bottlerocket-core-kit, delivered CI and deployment improvements, versioning flexibility, and image pull reliability enhancements that collectively improve build stability, deployment flexibility, and AWS integration across regions. Key changes include: CI optimization for nodeadm with GOPROXY caching; flexible containerd minor version specification; public ECR image pull authentication region fix; authenticated dual-stack ECR public pulls; incremental updates to the ECR credential provider (EU endpoint hardcoding and AWS partition support with subsequent compatibility refinements). These changes reduce CI churn, broaden deployment options, and strengthen image pull reliability and security across regions. Overall impact: improved developer velocity through faster, more reliable CI; greater deployment flexibility through unpinned containerd versions; more robust image caching and pulling in multi-region AWS environments; enhanced security posture with updated credential handling. Demonstrated expertise in CI/CD pipelines, Go tooling, containerd/version management, ECR authentication, and AWS regional integration.

January 2026

2 Commits • 2 Features

Jan 1, 2026

January 2026 performance summary focused on feature delivery and release hygiene across two repositories: awslabs/amazon-eks-ami and kubernetes/cloud-provider-aws.

December 2025

5 Commits • 1 Features

Dec 1, 2025

December 2025 monthly summary for awslabs/amazon-eks-ami: Focused on stabilizing and hardening the CI/CD pipeline to improve reliability, security, and maintainability. Delivered consolidated workflow updates, clarified and tightened permissions for CI jobs and manual triggers, and removed redundant steps and duplicate entries. The changes reduce pipeline noise, lower risk of misconfigurations, and accelerate safe releases.

November 2025

6 Commits • 3 Features

Nov 1, 2025

2025-11 monthly summary focusing on business value and technical achievements across bottlerocket-kernel-kit and amazon-eks-ami. Key work centered on licensing hygiene, GPU driver packaging, and deployment configurability to support newer NVIDIA GPUs and flexible sourcing in AMI builds. This work enhances portability, stability, and time-to-value for customers running GPU-accelerated workloads on Bottlerocket and AWS EKS.

October 2025

3 Commits • 2 Features

Oct 1, 2025

Monthly summary for 2025-10 — awslabs/amazon-eks-ami. Key features delivered include: NVIDIA driver default switched to 580 across installation scripts and for the 1.33/1.34+ releases to improve compatibility and performance on newer instances, with improved module handling. Also improved CI/CD stability by pinning a stable Go version for documentation deployment to ensure consistent builds. No major bugs fixed this month; focus was on stability and compatibility. Overall impact: smoother onboarding on newer instance families, more reliable documentation deployment, and reduced release risk. Technologies demonstrated: Linux installation scripting, NVIDIA driver management, CI/CD configuration, Go version pinning, and documentation deployment pipelines.

September 2025

2 Commits • 1 Features

Sep 1, 2025

September 2025 monthly summary for awslabs/amazon-eks-ami. Focused on stabilizing node boot networking and aligning endpoint behavior with AWS defaults to reduce misconfigurations and improve operator experience for EKS AMIs.

August 2025

3 Commits • 1 Features

Aug 1, 2025

August 2025 monthly summary for awslabs/amazon-eks-ami: Delivered stability and reliability improvements across NVIDIA driver installation on isolated partitions, resolved a network configuration race by introducing a daemon manager to coordinate nodeadm and systemd-networkd, and refactored regional build scripts to support dynamic AWS endpoints. These changes enhance consistency, reduce operational risk, and improve maintainability across partitions and regions, delivering measurable business value in deployment reliability and regional scalability.

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary for awslabs/amazon-eks-ami: Focused on enabling timely bug fixes and security patches by relaxing minor pinning of runc in the AL2 build, improving update cadence for AL2-based AMIs. No major bugs fixed this month; changes centered on build/CI configuration to support unpinned releases while maintaining stability.

June 2025

1 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for awslabs/amazon-eks-ami. Focused on build environment maintenance to keep AMI builds reproducible and aligned with current tooling. Delivered a routine update of the al2023 nodeadm image to version 1.24 in the build process. This change is non-functional from a product perspective but crucial for stability, security posture, and consistency across builds. Associated commit: 85ee8ce5a21f57b37315e1f5541eb5b5b41a95f1.

Activity

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Quality Metrics

Correctness94.8%
Maintainability93.0%
Architecture92.4%
Performance91.2%
AI Usage22.4%

Skills & Technologies

Programming Languages

BashGitGoJSONMarkdownRustShellTOMLYAMLplaintext

Technical Skills

API integrationAWSBuild EngineeringBuild ScriptingCI/CDCloud ComputingCloud DevelopmentConfiguration ManagementContainerizationDevOpsDocumentationDriver InstallationEKSGitHub ActionsGo

Repositories Contributed To

5 repos

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

awslabs/amazon-eks-ami

Jun 2025 Apr 2026
10 Months active

Languages Used

GoShellBashJSONMarkdownYAML

Technical Skills

Build EngineeringDevOpsAWSBuild ScriptingDriver InstallationEKS

bottlerocket-os/bottlerocket-kernel-kit

Nov 2025 Nov 2025
1 Month active

Languages Used

GitRustTOMLplaintext

Technical Skills

Linux administrationdriver developmentgitkernel developmentpackage managementrepository management

bottlerocket-os/bottlerocket-core-kit

Mar 2026 Mar 2026
1 Month active

Languages Used

GoTOMLspec

Technical Skills

AWSCloud ComputingCloud DevelopmentGoRustcloud infrastructure

kubernetes/cloud-provider-aws

Jan 2026 Jan 2026
1 Month active

Languages Used

Go

Technical Skills

API integrationGobackend developmenttesting

bottlerocket-os/bottlerocket

Mar 2026 Mar 2026
1 Month active

Languages Used

TOML

Technical Skills

AWSDevOpsKubernetes