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Jan Koscielniak

PROFILE

Jan Koscielniak

Worked across several repositories including konflux-ci/mobster and enterprise-contract/ec-policies to deliver features that improved CI/CD reliability, security, and artifact traceability. Developed CLI tools and automated workflows in Python and Bash, focusing on SBOM uploads, policy enforcement, and OCI-compliant architecture handling. Enhanced integration testing with Cosign attestation and streamlined build pipelines by refining error handling, authentication, and documentation. Addressed pipeline stability in operator-pipelines using Ansible and Podman, aligning with evolving security policies. The work emphasized robust automation, clear documentation, and resilient error management, resulting in more reliable releases, safer supply chain practices, and improved developer onboarding across multiple projects.

Overall Statistics

Feature vs Bugs

88%Features

Repository Contributions

12Total
Bugs
1
Commits
12
Features
7
Lines of code
1,865
Activity Months6

Work History

April 2026

1 Commits • 1 Features

Apr 1, 2026

Month: 2026-04 — Concise monthly summary for konflux-ci/mobster focusing on features delivered, bugs fixed, and overall impact for business and technical outcomes.

February 2026

1 Commits

Feb 1, 2026

February 2026 focused on stabilizing the Image Verification Pipeline in the redhat-openshift-ecosystem/operator-pipelines project and aligning it with current Podman/Sequoia policies. Implemented policy-level and pipeline-level changes to prevent flaky behavior and to support SHA-1 verification under the Sequoia backend, delivering a more reliable CI flow and improved security posture.

January 2026

4 Commits • 2 Features

Jan 1, 2026

Summary for 2026-01: In konflux-ci/mobster, delivered Conforma integration test enhancements with Cosign attestation validation, and streamlined CI and production builds. This work improved test coverage, reliability, and production safety by excluding Conforma binary from production, ensuring formatting is applied before checks, and tightening the CI pipeline. These changes reduce production risk, speed up feedback loops, and demonstrate expertise in test automation, image signing, and CI/CD practices.

June 2025

3 Commits • 1 Features

Jun 1, 2025

June 2025 monthly summary for konflux-ci/mobster focusing on SBOM upload to Red Hat Trusted Profile Analyzer (TPA) via OIDC authentication. Delivered a CLI that supports uploading a single file or all files in a directory, with configuration guidance and new OIDC/TPA API modules. Implemented robust error handling and retry mechanisms to improve reliability of TP A uploads. Refactored OIDC client tests to increase reliability and fixed worker-count logic during directory uploads.

December 2024

1 Commits • 1 Features

Dec 1, 2024

December 2024 monthly summary: Delivered SBOM Naming Enhancement for OCI Copy Operations in konflux-ci/build-definitions. The feature dynamically names SBOMs as registry/repository@digest using the pushed image's digest, improving traceability, auditability, and compliance readiness for generated SBOMs. No major bugs fixed this month. Impact: clearer artifact provenance in CI pipelines, reduced risk of ambiguity in SBOM artifacts, and smoother integration with downstream tooling. Technologies demonstrated include OCI copy operations, digest-based naming, and SBOM-aware artifact management.

November 2024

2 Commits • 2 Features

Nov 1, 2024

November 2024: Strengthened the security and reliability of our build pipelines by delivering policy-based controls for dependency sources and comprehensive documentation for a generic fetcher, across ec-policies and konflux-ci/docs. No critical bug fixes recorded for this period.

Activity

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Quality Metrics

Correctness92.6%
Maintainability88.4%
Architecture87.6%
Performance83.4%
AI Usage33.4%

Skills & Technologies

Programming Languages

BashDockerfileMakefilePythonRegoYAMLadoc

Technical Skills

API IntegrationAnsibleAsynchronous ProgrammingAuthenticationBuild AutomationCI/CDCLI DevelopmentCommand-line InterfaceContainerizationDevOpsDocumentationError HandlingFile HandlingFile UploadsIntegration Testing

Repositories Contributed To

5 repos

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

konflux-ci/mobster

Jun 2025 Apr 2026
3 Months active

Languages Used

PythonDockerfileMakefileYAML

Technical Skills

API IntegrationAsynchronous ProgrammingAuthenticationCLI DevelopmentCommand-line InterfaceError Handling

enterprise-contract/ec-policies

Nov 2024 Nov 2024
1 Month active

Languages Used

Rego

Technical Skills

DevOpsPolicy as CodeSecurity

konflux-ci/docs

Nov 2024 Nov 2024
1 Month active

Languages Used

adoc

Technical Skills

Documentation

konflux-ci/build-definitions

Dec 2024 Dec 2024
1 Month active

Languages Used

YAML

Technical Skills

Build AutomationCI/CD

redhat-openshift-ecosystem/operator-pipelines

Feb 2026 Feb 2026
1 Month active

Languages Used

BashYAML

Technical Skills

AnsibleContainerizationDevOpsPodman