Senior Django developers, based in the US, working your hours

Frequently asked questions

What should I look for when hiring a Django REST Framework developer?

Look beyond serializer syntax. Ask about object-level permissions, queryset filtering, pagination, API versioning, and validation across related models. A practical review should include an endpoint with an N+1 query problem and a permission boundary. Candidates should explain how tests prevent one user or tenant from reading or modifying another tenant's records.

How should we plan an upgrade from Django 4.2 to 5.2 LTS?

Inventory Python versions, third-party packages, middleware, and any reliance on deprecated Django behavior. Review the intervening release notes, resolve deprecation warnings, and run tests against compatible dependency versions. Pay particular attention to authentication, database behavior, storage configuration, and custom extensions. Rehearse deployment in staging, including migration sequencing and a practical recovery approach.

Can a Django developer fix slow PostgreSQL queries?

First identify expensive requests and inspect the generated SQL rather than guessing from view code. Django Debug Toolbar can help locally; PostgreSQL EXPLAIN plans expose database-level behavior. Typical investigations include missing indexes, N+1 queries, excessive joins, and oversized result sets. Changes to select_related, prefetch_related, or schema design should be checked against representative workloads.

When does a Django application need Celery?

Celery fits work that should run outside the request cycle, such as report generation, email delivery, or scheduled synchronization. It adds operational responsibilities, including broker management, retries, timeouts, and task monitoring. Ask candidates how they make tasks idempotent and use transaction.on_commit to avoid starting work before the underlying database transaction has committed.

How do we interview a Django developer for an existing application?

Use a sanitized slice of your own architecture: a model relationship, API endpoint, migration, or failing test. Ask the engineer to explain trade-offs and propose a small, reviewable change. Most teams interview matched engineers within a week of the first call. Book a 15-minute call with your Django version and immediate backlog.

Are your developers really based in the US?

Yes. Every engineer lives and works in the United States. No offshore subcontracting and no hand-offs to another team. That's written into the contract.

How fast can someone start?

Most teams interview matched engineers within a week of the first call. Start dates depend on your interview process.