Development Process: Git, Reviews, Tests, and CI/CD

Software is rarely just code. It is code that changes.

That is why development process matters.

If AI helps you write code faster, process becomes more important, not less. Faster code without review, tests, and deployment discipline just creates faster chaos.

Git: the shared language

Git is the standard way teams track changes.

The basic flow:

Even solo builders benefit from this. A branch gives you a safe place to experiment. A commit gives you a checkpoint. A pull request gives you a place to review your own work before production.

Code review: not a trial, a safety system

Code review is not supposed to be a public judgment of your intelligence.

It is a structured way to make code safer.

Good review asks:

• Is the intent clear?
• Are edge cases handled?
• Are secrets protected?
• Is user data safe?
• Are tests included where risk is high?
• Is this simpler than the alternative?
• Will another person understand this in three months?

The test pyramid

Tests are a safety net. The shape matters.

AI-generated code should be tested more, not less. The code may look confident while hiding edge cases.

CI/CD: the conveyor belt

CI/CD is automation around build, test, and deploy.

CI means continuous integration: does this change combine safely with the rest of the code?

CD means continuous delivery or deployment: can this change be shipped reliably?

The beginner version:

1. Push code to GitHub.
2. Run lint and tests.
3. Build the app.
4. Deploy a preview.
5. Review the preview.
6. Merge.
7. Deploy production.

This turns deployment from a dramatic event into a repeatable process.

Technical debt: the credit card of software

Technical debt is work you postpone to move faster now.

Not all debt is bad. Sometimes speed matters. The problem is pretending debt does not exist.

The first type can be managed. The second needs attention. The third should not wait.

What solo builders should adopt immediately

• Use Git from day one.
• Commit small, meaningful changes.
• Keep a main branch that always works.
• Use preview deploys.
• Run lint/build before public release.
• Add tests around money, login, permissions, and data deletion.
• Keep a visible debt list.

Ask AI this

Review this change as if it were a pull request.
Look for unclear code, missing tests, security risks, data-loss risks, and technical debt.
Return the top five issues in priority order.

Frequently asked questions

Why do I need Git if I work alone?

Git gives you a history of changes, the ability to undo mistakes, and a safe way to experiment on branches. It also makes future collaboration and deployment much easier.

What is a pull request?

A pull request is a way to propose changes, discuss them, and run checks before merging code into the main branch. It is the main moment for code review.

What is CI/CD?

CI/CD is automation around building, testing, and deploying code. It turns deployment from a manual, risky event into a repeatable process.

What is technical debt?

Technical debt is work you postpone now to move faster. Some debt is intentional and manageable. Dangerous debt touches security, billing, data integrity, or user trust.

Which tests should I write first?

Start with tests around the riskiest behavior: money, login, permissions, data deletion, and anything that is hard to fix if it breaks in production.

The takeaway

Development process is how software stays changeable.

The better your tools get at creating code, the more you need habits that keep that code safe, reviewable, testable, and deployable.