Notes on building
systems that last.
Case studies and field notes on billing, backend architecture, migrations and FinOps.
2026 · 05
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2026 · 02
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2024 · 12
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2025 · 11
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2025 · 07
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2024 · 08
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2025 · 03
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Cutting a $150k/mo AWS bill by 6% — without touching SLAs
What actually moved the needle on FinOps, and what didn't.
From 2-month demo setups to 2 weeks
Treating environment provisioning as a product.
Why I reach for Rust on the hot path
Where the memory and latency wins are real — and where they aren't.
Lifting a legacy monolith into EKS, account by account
A migration playbook that didn't page anyone at 3am.
A billing engine that survives enterprise contracts
ACID-safe ledgers and reconciliation at high volume.
The FinOps habits that actually stick
Small, boring routines beat one-off cost-cutting sprints.
OAuth2 from scratch: decoupling auth from a legacy DB
Carving a centralized auth service out of a monolith.