Practical engineering writing.

Every guide below links straight to the deep engineering content on our service and case-study pages — no click-baiting, no promise of future content. Want a specific topic covered in more depth? Email info@devinsta.com and we'll write it.

• Shopify & E-commerce15 min read

  The Shopify Plus headless playbook

  How to decide if your store should go headless — and how to ship it without breaking SEO or checkout conversion. Framework, checklist, and the trade-offs we see across live Plus builds.

  Read the deep dive
• Technical SEO12 min read

  Core Web Vitals for marketing sites in 2026

  INP has replaced FID. LCP targets tightened. The current playbook for ranking on Google in the post-INP era — with real budgets we enforce in CI on every build we ship.

  See the CRO breakdown
• AI & Automation18 min read

  Designing an AI workflow that does not hallucinate

  RAG, structured outputs, evaluation harnesses, human-in-the-loop. The architecture pattern that makes AI workflows reliable in production — plus how we monitor and tune them post-launch.

  Explore the pattern
• Technical SEO14 min read

  Hreflang for real: UK, EU, US, LATAM, APAC playbook

  What Google actually does with hreflang signals, what it ignores, and the pattern we ship for multi-region brands. Includes the exact metadata + sitemap contract we use.

  See the multi-region setup
• Mobile13 min read

  Shipping native iOS + Android in 10 weeks

  The constraints, the team shape, and the discipline that lets two native pods land on the same launch date. The playbook that produced the FinCore fintech app case study.

  Read the case study
• Payments11 min read

  PCI DSS without the panic

  Why most agencies are wrong about PCI scope, and how to keep your application at SAQ-A. The gateway integrations, tokenisation pattern, and audit trail that get you there.

  See the payments deep dive