17 Principles for Software Developers: Career Lessons and Best Practices

This article presents 17 valuable lessons learned from the author's career in software development:

1. Customer Real Needs: Customers only understand their true requirements after interacting with a product. Showing a functional prototype is far more effective than lengthy documentation.

2. Security Inevitability: With sufficient time, all security defenses will eventually fail. Hackers only need one success to defeat you.

3. Security Planning: Assume hackers can breach your defenses. Prepare by encrypting database contents and isolating servers to minimize damage.

4. Security as Investment: Robust security is a strategic investment, not an expense. Inadequate security is wasted resources that can cost billions.

5. Simplicity vs. Complexity: Making complex things simple is difficult; making them more complex is easy. Write code that is easy to understand.

6. Learning from Failure: Success comes from learning from mistakes; failure comes from tolerating errors. Don't make excuses for bugs.

7. Embrace Change: The only constant is change. Nothing in programming is permanent.

8. Continuous Learning: Never stop learning, or technology will leave you behind.

9. Diversity of Ideas: The software industry is built on diverse perspectives. Technologies once deemed impossible are now mainstream.

10. Context Matters: What works for you may not work for others. There's rarely a single "best" solution.

11. Evaluation Skills: The ability to evaluate and choose the best approach among options is crucial in a changing world.

12. Results Matter: Clients care about whether the software works, not the problems you solved to deliver it.

13. Customer Defines Quality: No metrics, checklists, or code reviews matter unless the customer sees the software working correctly.

14. Monitoring Importance: Lack of logging, crash reports, and usage data leads to overestimating product quality. Detailed logging is essential.

15. Time Constraints: There's always a better solution, but time doesn't permit finding it. Know when to stop brainstorming and start building.

16-17. Client Selection: Two quotes from a salesperson about targeting clients who lack technical knowledge or have ample budget.