Daniel Milewski https://danielmilewski.com/en/blog Senior Python developer building backend systems, APIs, data pipelines, and LLM features with FastAPI and PostgreSQL. Based in Gdańsk, working remotely across Europe. en danielmilewski123@gmail.com (Daniel Milewski) <![CDATA[Your JSON-LD Might Not Be in Your HTML: A Next.js App Router Trap]]> https://danielmilewski.com/en/blog/nextjs-json-ld-trap https://danielmilewski.com/en/blog/nextjs-json-ld-trap Tue, 06 Oct 2026 00:00:00 GMT Next.js SEO Structured Data TypeScript <![CDATA[Technical SEO for Astro Sites: What Moved the Needle for Two Interior Design Studios]]> https://danielmilewski.com/en/blog/astro-technical-seo-local-business https://danielmilewski.com/en/blog/astro-technical-seo-local-business Thu, 20 Aug 2026 00:00:00 GMT Astro SEO Web Performance Structured Data <![CDATA[FIFO Cost Basis in Python: What I Learned Building InvestTracker]]> https://danielmilewski.com/en/blog/fifo-cost-basis-python https://danielmilewski.com/en/blog/fifo-cost-basis-python Tue, 18 Nov 2025 00:00:00 GMT Python Fintech PostgreSQL Backend <![CDATA[Practical Lessons from Building LLM Apps in Production]]> https://danielmilewski.com/en/blog/llm-apps-in-production https://danielmilewski.com/en/blog/llm-apps-in-production Fri, 15 Nov 2024 00:00:00 GMT Python LLMs Production AI Engineering <![CDATA[FastAPI Patterns I Actually Use in Real Projects]]> https://danielmilewski.com/en/blog/fastapi-patterns https://danielmilewski.com/en/blog/fastapi-patterns Thu, 03 Oct 2024 00:00:00 GMT Python FastAPI Backend Architecture <![CDATA[What Makes Automation Projects Actually Valuable for Businesses]]> https://danielmilewski.com/en/blog/automation-business-value https://danielmilewski.com/en/blog/automation-business-value Tue, 10 Sep 2024 00:00:00 GMT Python Automation Product Thinking Engineering