Build Logs

Author

B. Talvinder

Build Logs

Technical decisions, architectural patterns, and lessons from building real systems. What we chose, what we rejected, and why.

Training AI to Serve Rare Disease Patients Is a Structural Problem, Not a Data Problem

AI in Healthcare
AI Validation
India Tech

Rare disease AI failures stem from healthcare’s fragmented data governance, not from insufficient data volume.

Apr 17, 2026

The Vibe Coding Hangover: Why AI-Written Code Costs 4x to Maintain by Year Two

Software Engineering
Agentic Systems
Production AI

CodeRabbit data shows AI co-authored code has 1.7x more major issues and 2.74x higher vulnerability rates. The productivity gains are real — and so is the maintenance debt that follows.

Apr 3, 2026

I Built Ed-Tech Before Ed-Tech Existed in India

Ed-Tech
India Startups
Founder Lessons

In 2018, product management education wasn’t a category in India. Building before the market forces you to validate pedagogy instead of growth. That constraint became the advantage.

Apr 2, 2026

I Built an Experiences Marketplace Five Years Before Airbnb Experiences

Marketplaces
Startup Lessons
India Startups

Tushky had the idea, the unit economics, and the inventory. It still failed. The reason wasn’t timing — it was confusing a transaction platform for a community.

Apr 2, 2026

The OYO Pivot: When Marketplaces Should Own the Supply

India Tech
Marketplace Strategy
Vertical Integration

OYO’s shift from marketplace to supply owner wasn’t a failure of platform thinking — it was the only move that fixed India’s budget hotel quality problem.

Apr 2, 2026

Point-of-Need Learning: Why Application Beats Credentials

Edtech
India Tech
Build Logs

We built Pragmatic Leaders in 2018 around a contrarian bet: that corporate training would abandon certificates for verified competence, and COVID proved us right.

Apr 2, 2026

We Were Running AI Agents Before ‘Agentic’ Became a Buzzword

AI Engineering
Agentic Systems
Build Logs

In early 2024 we deployed a multi-agent system before the frameworks existed. Here’s what we learned — and the pattern I’m calling Agent Debt.

Mar 20, 2026

AI Is Making Your Team Slower — The Math Your CEO Won’t Show You

AI Engineering
Software Engineering
Engineering Leadership

Every company measuring AI productivity is counting the wrong thing. When you measure both sides — output volume and downstream cost — the numbers tell a different story.

Mar 18, 2026

Why LLM-as-Judge Fails in India: The $0.03 Evaluation That Costs You Customers

Agentic Systems
India Market
Product Economics

The Evaluation Cost Ratio: LLM-as-judge pricing works in US markets where ARPU is $500/month but breaks Indian edtech at ₹200/month.

Mar 5, 2026

Why We Built an Agentic Rightsizing System Instead of Using Existing FinOps Tools

Cloud
FinOps
Architecture
Zopdev

Zopdev’s Agentic Rightsizing Pattern delivers 25-35% cloud cost reduction in 90 days by replacing FinOps dashboards with autonomous action. Here’s the architecture.

Feb 10, 2025
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Archive — Technical notes from 2014–2015. Short fixes and configurations from earlier projects.