Frameworks come and go. Strong engineering skills stay valuable.
If you invest time in these, you'll improve regardless of the stack you're using:
📐 System design: understand how services communicate and scale.
🧪 Testing: write code that you can change with confidence.
📊 Observability: logs, metrics, and tracing save hours of debugging.
⚡ Performance: measure first, optimize second.
📚 Documentation: future you (and your team) will thank you.
Tools change.
Engineering principles don't.
What skill has had the biggest impact on your career?
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