Designing maintainable APIs with clean architecture, strong validation, and production-focused thinking.

Backend Developer with hands-on experience contributing to a real production environment at Brytspace.

I focus on building backend systems that are:

• Predictable
• Testable
• Maintainable
• Explicit in their business logic

My work is centered around structured REST API development using Django and DRF, applying clear separation of responsibilities and strong testing practices.

• Designed and maintained REST APIs using Django & DRF
• Refactored tightly coupled logic into a dedicated Services Layer
• Implemented business rules through serializer validations and service logic
• Wrote unit and integration tests (services, serializers, views)
• Improved performance by fixing N+1 queries and optimizing querysets
• Worked with structured Pull Request workflows and code reviews
• Monitored production errors using Sentry
• Collaborated with frontend to deliver end-to-end features

I don’t just implement endpoints — I think about where logic belongs and how it scales.

When implementing a feature, I typically:

1. Clarify business rules first
2. Decide where logic should live (model, serializer, service)
3. Write or update tests
4. Refactor for clarity and maintainability
5. Review performance implications

Structure over shortcuts.

Good backend systems should:

• Keep business rules explicit
• Separate responsibilities clearly
• Be easy to test
• Avoid hidden side effects
• Fail clearly instead of silently
• Scale without becoming unmaintainable

Clean structure beats clever code.

• Advanced Django internals
• Scalable backend architecture
• Performance optimization patterns
• Secure authentication flows
• Writing smaller and more focused services

• 💼 LinkedIn: https://linkedin.com/in/alejandro-cherrez
• 📧 Email: c20alex00@gmail.com

Backend development is not about writing more code.
It’s about writing code that survives growth.