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the build log

Notes from
production.

No thought leadership. Just deep-dives on what we learned shipping real systems — AI evals, fintech ledgers, contract fuzzing, and frontend performance.

FeaturedAI Engineering·8 min read

Your LLM Feature Needs an Eval Harness, Not More Prompting

Most AI features fail in production because nobody measured them. Here's the evaluation pipeline we deploy with every LLM project.

May 28, 2026 · TopDev Engineering

Architecture12 min

Event-Driven Architecture for Fintech: Lessons from 40k TPS

What we learned building a real-time ledger that settles in milliseconds — exactly-once semantics, outbox patterns, and the failure modes nobody blogs about.

May 14, 2026

Web310 min

Fuzzing Smart Contracts: 50 Million Runs Before Mainnet

Audits catch what humans can think of. Fuzzing catches what they can't. Our invariant-testing playbook for Solidity protocols.

Apr 30, 2026

Frontend7 min

Server Components Changed How We Architect SaaS Frontends

Less client JavaScript, faster dashboards, simpler data flow. A practical migration guide from our last three SaaS builds.

Apr 16, 2026

DevOps9 min

Cloud Cost Engineering Is a Feature, Not a Cleanup Task

How we treat cost as an SLO — budgets in CI, rightsizing automation, and the 38% average reduction we deliver in quarter one.

Apr 2, 2026

Design6 min

Design Systems Are Velocity Systems

A good design system isn't about consistency — it's about making the right thing the fast thing. How we structure tokens, components, and motion.

Mar 19, 2026