Professional Git & GitHub Workflows: Branching Strategies and CI/CD Automation

Version Control as an Engineering Force Multiplier

Version control is more than a backup tool—it is the communication channel and history log of an engineering team. Adopting clean Git conventions and automated Continuous Integration (CI) drastically reduces merge conflicts and prevents broken code from reaching production.

Git Branching Strategies: Trunk-Based vs GitFlow

• **GitFlow**: Best suited for scheduled release cycles (e.g., enterprise desktop software). Involves long-lived `develop`, `release`, and `master` branches.
• **Trunk-Based Development (Recommended for Web & SaaS)**: Developers work in short-lived feature branches (lasting 1–2 days) merged frequently into the `main` trunk via pull requests. This avoids complex merge conflicts and accelerates shipping velocity.

Conventional Commits Standard

Write clear, machine-readable commit messages that explain *what* changed and *why*:

• `feat: add candidate interview scheduling table on /jobs`
• `fix: handle null currentTopic in course learning viewer`
• `perf: optimize PostgreSQL index on applicant submission timestamp`
• `docs: update API documentation for sales leads endpoint`
• `refactor: simplify user authentication middleware`

Automated GitHub Actions CI/CD Pipeline

Automate code linting, typechecking, and test execution on every pull request:

```yaml name: CI Quality Gate

on: pull_request: branches: [ main ] push: branches: [ main ]

jobs: validate: runs-on: ubuntu-latest steps: - name: Checkout Code uses: actions/checkout@v4

- name: Setup Node.js uses: actions/setup-node@v4 with: node-version: 20 cache: 'npm'

- name: Install Dependencies run: npm ci

- name: Run Linter run: npm run lint

- name: Run TypeScript Type Check run: npx tsc --noEmit

- name: Run Automated Tests run: npm test ```

Pull Request (PR) Code Review Guidelines - Keep PRs small and focused: aim for under 400 lines of changes. - Provide descriptive context, screenshots for UI changes, and testing instructions. - Ensure automated CI checks pass before requesting reviews from team members.