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Achievements

Achievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: Quickdraw

Achievements

Achievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: Quickdraw

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sebastienwitz/README.md

Hi, I'm Sébastien

Software engineer working at the intersection of pragmatic architecture, technical leadership, legacy modernization, DevOps, and AI-assisted engineering.

I help complex software systems become easier to understand, validate, modernize, and operate — with a strong focus on engineering workflows, CI/CD, testability, and delivery confidence.

Current focus

  • Legacy .NET modernization and architectural refactoring
  • CI/CD, release confidence, and validation automation
  • AI-assisted software engineering workflows
  • Developer tooling for complex and integration-heavy systems
  • Replay/testing tools for safer system evolution
  • Pragmatic technical leadership and engineering practices

Featured projects

Interests

.NET · Software Architecture · Legacy Modernization · DevOps · CI/CD · AI-assisted Engineering · Developer Tools · Testing

Pinned Loading

  1. replaylab replaylab Public

    Lightweight replay/testing toolkit for loading structured messages and replaying them through configurable adapters.

    C#

  2. ai-engineering-toolkit ai-engineering-toolkit Public

    Reusable AI-first software engineering methodology, templates, prompts, skills, and review workflows.

    JavaScript

  3. NotionAPI NotionAPI Public

    Small Notion API experiments for automation, integrations, and developer workflow exploration.

    Python