[Zero Two]

Both are viable choices for backend work these days and both get used for the wrong reasons. Here's my honest take.

Pick Python when:

• You're doing anything data-adjacent - pandas, NumPy, scikit-learn, PyTorch are all Python-native and nothing else comes close
  
• Your team is stronger in Python and you're not building something that needs extreme concurrency
  
• You want the widest possible library ecosystem for glue code, automation, and integrations
  
• Readability matters more than raw performance
  

Pick Node.js/TypeScript when:

• You already have a JavaScript frontend team and sharing code (types, validation schemas, utilities) is valuable
  
• You're building I/O-heavy services where Node's event loop shines - APIs that talk to lots of external services, websocket servers, real-time stuff
  
• JSON handling is a primary concern - it's genuinely more natural in JS
  
• You want a single language across your stack
  

Honest takes:
Python async (asyncio, FastAPI) has caught up a lot - it's no longer the concurrency liability it was. FastAPI in particular is a genuinely excellent framework.

Node.js with TypeScript is much better than Node.js without it. If you're writing plain JS on the backend in a serious project in 2026, you're making life harder than it needs to be.

Performance: for most CRUD APIs, the bottleneck is the database, not the language. This choice rarely matters for performance at typical scales.

What are you using for backend work and why?