FajarThe Fajarix Blog
Engineering Notes, Written Down
Practical articles on costs, tradeoffs and what breaks in production, for founders and engineering leads planning software.
All Articles
Every article is drafted with AI assistance, then reviewed and edited by the Fajarix engineering team before it is published.
n8n vs Zapier vs Custom Code: Pick Your Automation Stack
How to choose between Zapier, n8n and custom code: task arithmetic, error handling, self-hosting, who maintains it, and the signs it is time to move to code.
Read articleGPT vs Claude vs Gemini: Choosing an LLM in 2026
A framework for choosing between GPT, Claude and Gemini by latency, cost structure, tool use and compliance, with links to each vendor’s current lineup.
Read articleDesign Systems for Startups: What to Build First
A startup design system should begin with tokens and about twelve components. Here is the build order, what to skip, and how to keep Figma and code in sync.
Read articleFixed-Price vs Retainer: Choosing an Engagement Model
Fixed-price and monthly contracts carry opposite risks. Learn when each one fits, how change requests should work, and which contract terms to check.
Read articleHow to Vet Senior Engineers Before You Hire
Seniority is judgment under constraint, not years served. Use this fair, structured process to test it: a project deep dive, a realistic exercise and more.
Read articleFlutter in 2026: When to Choose It and When Not To
Flutter is mature in 2026, and still wrong for some products. How it compares with native, React Native and Kotlin Multiplatform, and how to choose.
Read articleThe Real Cost of a Custom Web App in 2026
What a custom web app costs depends on about eight decisions. Our rough price bands, where teams overspend, and the costs that proposals leave out.
Read articleBuilding Software That Supports HIPAA Compliance
Organizations are HIPAA compliant, not software. What the Security Rule requires, what addressable means, and the engineering patterns that support it.
Read articleRAG in Production: What Actually Breaks and How to Fix It
A RAG demo takes a weekend. A system users trust needs care in five places: chunking, retrieval, evaluation, answer guards and cost. Here is each one.
Read articleAI Chatbot Launch Checklist: 17 Things to Get Right
Most AI chatbots fail for predictable reasons: no grounding, no escalation path, no cost caps. A 17-point checklist to work through before launch.
Read articleHow to Scope an MVP: What Really Fits in 6 Weeks
A typical MVP takes 8 to 12 weeks. Six is possible only for a tightly cut first version. Here is how to scope it, what to cut and what has to stay in.
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