Sebastian Hädrich

Full-stack web developer

Languages
- Desktop
  - Lua (basic knowledge): Scribunto
  - Python (basic knowledge)
- Server-side
  - Ruby
    - middleman/Ruby on Rails (through middleman)
  - PHP
    - Frameworks
      - Laravel (advanced knowledge)
      - Symphony (basic knowledge)
    - PSR
    - PHPUnit
  - ColdFusion (web framework based on Java using tag-based syntax; fluent)
- Client-side: DHTML
  - HTML 5
  - CSS 3
    - Sass
    - Less
    - SCSS
  - JavaScript
    - ReactJS (advanced knowledge, mostly class-based components)
    - NativeScript (basic knowledge)
    - Ajax (obviously the knowledge you can have of it)
    - jQuery (fluent)
    - nodeJS (basic knowledge)
    - ESNext (fluent)
    - TypeScript (advanced knowledge)
    - Backbone (MVC, fluent)
    - VueJS (fluent)
  - Web components
- Databases
  - Relational
    - MS SQL
    - mySQL/mariaDB
    - SQLite
    - PostgreSQL
  - noSQL
    - mongoDB
    - IndexedDB
  - Graph: neo4j
- YAML
- Markdown
Version control system
- git
  - Services
    - GitLab
    - GitHub
    - Bitbucket
  - Branching model
    - GitFlow
  - Micro commits
  - Conventional commits
Operating systems
- Linux
  - Manjaro (arch-linux build)
  - Ubuntu
  - Debian (current; LAMP solution stack/software bundle)
- macOS (professional use only)
- Windows
Package management
- nodeJS-based
  - Grunt/Gulp
  - npm/Yarn
  - Mix/Vite
- PHP-based
  - Composer
Software development
- Programming paradigm
  - Procedural
  - Object-oriented
- DevOps
  - CI/CD
    - Test driven development
      - Unit tests
      - Integration tests
      - Mutation testing
    - Code quality
      - Code review
      - Code coverage
      - Static code analysis (basic knowledge)
- SemVer
- Principles
  - KISS
  - SoC
  - SOLID
  - DRY
  - Law of conservation of complexity
  - Principle of least astonishment
- PSR
Project management
- Agile
  - Scrum
Knowledge of the industry
- Aviation
- eCommerce
Interests/advocacy
- Semantic web
- a11y (basic knowledge)
- Microformats
- IndieWeb
- FLOSS
- UX (basic knowledge)
- Privacy
Miscellaneous
- Responsive Webdesign
- APIs
  - RESTful services
  - Remote procedure calls
  - OpenAPI
- Authorization Flow/Identity management
  - OpenID
- Content Management Systems
- Regular expressions
- SEO (basic knowledge)/OpenGraph
IDE: Visual Studio Code