Engineering Log
Notes from building products and the teams behind them.
Front-end architecture, product delivery and leading engineers. Written from real projects, with the code and the numbers.
Marcel LefterTechnical Product Lead at SkalX, 13 years in software~/engineering-loggit log --oneline
- 3e81446publishVercel Shop for Shopify: a step-by-step guide
- 9071786updateFeature-Sliced Design: context, generator, trade-offs
- bf4e656updateScaling the front-end org: context and lessons
- 693d49cpublishTwo agent skills for mocking UI in the real app, then shipping it
- 0b142e0updateFeature-Sliced Design: trade-offs section
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LatestArchitecture32 min
Vercel Shop for Shopify: a step-by-step guide
I built a Shopify storefront with Vercel Shop in a sandbox, redesigned it with agent skills and checked what changed on screen, in search and for AI agents.
Read the entryNEXT_PUBLIC_SHOPIFY_STORE_DOMAIN="your-store.myshopify.com"
NEXT_PUBLIC_SHOPIFY_STOREFRONT_ACCESS_TOKEN="your-token"
NEXT_PUBLIC_SHOPIFY_SHOP_ID="123456789"Latest entries
Newest first- 8 minTwo agent skills for mocking UI in the real app, then shipping itui-to-mock builds a clickable mock inside your app behind a flag. mock-to-ui turns the approved mock into production code without changing what was approved.Product
- 5 minFeature-Sliced Design in a monorepoThe setup behind an estimated 5x lower infra cost and 90% fewer API integration bugs.Architecture
- 2 minScaling the front-end org from 1 to 10Hiring, an internship program, and what kept people on the team.Case study
- 13 minHow to implement Cursor Agent CLI into GitLab for code reviewStep-by-step guide to automated AI-powered code review in GitLab CI using Cursor Agent CLI: setup, prompt design, GitLab API, and troubleshooting.Architecture
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