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Mohammed Hammoud

Mohammed Hammoud

Senior full-stack developer building scalable web and mobile products with a strong UX focus. TypeScript, React, SolidJS, Python, Django. Based in Stockholm.

Personal notes on software architecture, frontend systems, and backend design, focused on clear explanations and solutions that work in practice.

Testing Django abstract models without cluttering your migrations

A clean pattern for testing Django abstract model behavior: temporary concrete models, SchemaEditor, and predictable teardown.

PostgreSQL user management and access control: a practical guide

How to set up PostgreSQL roles and privileges that stay manageable as your project grows.

Fixing locale.Error: unsupported locale setting in Docker and CI

The real cause of locale.Error and the two fixes that actually matter: generate locales, or standardize on C.UTF-8.

Installing npm packages from GitHub (safely)

How to use forks and unreleased fixes without making your dependency setup hard to maintain.

Using .env variables in package.json scripts (without surprises)

A practical 2026 view: shell env vs .env files, when to use dotenv-cli, cross-env, and Node's --env-file.

Running Elasticsearch reliably: systemd, Docker Compose, and managed cloud

What actually matters for reliable Elasticsearch: kernel limits, restart config, readiness checks, and when managed makes more sense.