Field
notes.
Essays, postmortems, and perspective from senior practitioners actively shipping in production. The intent is to be useful — specific, opinionated, sometimes wrong, never empty.
Boring on purpose: why Go quietly won the modern backend
Go was never the fashionable choice. It was always the durable one. Here's why we reach for Go first when we're building backend services that have to last — and the specific patterns we use to keep them clean as the codebase grows.
Why your RAG demo doesn't survive production
A working LLM prototype and an enterprise-grade RAG system are separated by a body of unglamorous infrastructure: evals, guardrails, observability, cost controls, drift detection. Here's the checklist we use to close the gap.
FinOps for African fintechs: A practical playbook
Cloud spend is a quiet line on most African fintech P&Ls until it isn't. By the time it's a problem, the architecture decisions are already made. Here's the operating playbook we install before that day arrives.
Threat modelling at design time: A field guide
A penetration test six weeks before launch can't fix architectural insecurity. Threat modelling at design time is the practice that prevents the bug — not the test that finds it. Here's how we run it.
Shipping Onsight: lessons from building workforce intelligence at field scale
Onsight is a workforce intelligence platform we built end-to-end at Hexcore — admin dashboard, native mobile app, exception queue, and the OpsIQ AI command layer. Here's what we learned shipping a four-surface product to teams operating in tough field conditions.
Africa's tech talent is world-class. The market is starting to notice.
For years, African engineering talent was treated as a cost-arbitrage play by foreign buyers. That framing is collapsing. Here's what's changed, what hasn't, and what it means for companies considering African delivery partners.
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