Backend2 min read
Webhooks Without Duplicate Work
A practical design for handling repeated events, safe retries and background processing without creating duplicate orders or notifications.
Omer ToqeerThe engineering notebook
Ideas. Systems.
Things that ship.
Practical guides to AI, backend engineering and mobile products. Clear decisions, useful patterns and the details that matter in production.
18 articles By Omer Toqeer
Latest articleAI Engineering
Permissions Come Before Vector Search
How to keep a useful document assistant from retrieving another customer's records, even when two documents look semantically similar.
18 Oct 20262 min read
Read the article Explore the notebook
18 articles to explore
BackendOmer Toqeer
AI & Product2 min read
Shipping AI Features Fast (Without Breaking Production)
How I take an AI idea from rough prompt to a stable, testable feature in a real product.
Omer Toqeer
AI Engineering2 min read
Building RAG Apps That Don’t Hallucinate Every Answer
Lessons from building document Q&A tools and AI assistants that rely on retrieval instead of pure prompting.
Omer Toqeer
Backend1 min read
Designing Real-World REST APIs for Products, Not Tutorials
How I design REST APIs for apps like CarelineOS and StoreParity so they stay maintainable as the product grows.
Omer Toqeer
Mobile1 min read
From Wireframes to 40-Screen React Native App (OnboardRail)
My end-to-end process for taking a rough idea to a production-ready React Native app with 40+ screens.
Omer Toqeer
Mobile1 min read
Designing Offline-First Mobile Apps for Real Users
Patterns I used in apps like TallyPocket to make sure users can work even when the internet doesn’t.
Omer Toqeer
Case Study1 min read
Lessons From Building CarelineOS: A Hospital Platform With 100+ APIs
Architecture, trade-offs, and hard lessons from co-founding and building a full digital health platform.
Omer Toqeer
Frontend1 min read
Building Admin Panels That Developers Don’t Hate Maintaining
Patterns I use when building admin dashboards for products like StoreParity and RingCascade.
Omer Toqeer
AI & Automation1 min read
AI Agents vs Traditional Automation: When to Use Which
A practical comparison between classic automation (cron, scripts, webhooks) and AI agents that plan and act.
Omer Toqeer