Writing

Notes on building production software.

Essays on the engineering decisions behind the systems I build — payments, security, architecture and the craft in between.

2 min read

Building a Buy-Now-Pay-Later platform

What it actually takes to split a payment into instalments safely — affordability, schedules, state machines and keeping the ledger honest.

FinTechPaymentsArchitecture
1 min read

Designing secure authentication

A practical checklist for authentication that holds up — hashing, sessions, RBAC and the OWASP failure modes worth memorising.

SecurityBackendArchitecture
1 min read

Lessons from building SaaS

Hard-won lessons from shipping real products end to end — scope, state, and designing for failure from day one.

EngineeringSaaSArchitecture
1 min read

Database design that scales

Normalisation, constraints and modelling invariants at the schema level so bad data simply cannot exist.

DatabasesBackendArchitecture
1 min read

Designing REST APIs people enjoy using

Predictable resources, honest status codes and idempotency — the small decisions that make an API pleasant.

APIsBackend
1 min read

Accessibility is not optional

Why building to WCAG from the start improves the product for everyone — and how I approached it in OpFix.

AccessibilityFrontend
1 min read

Software architecture that lasts

Boundaries, single sources of truth and explicit lifecycles — the architectural habits that keep systems maintainable.

ArchitectureEngineering