Blog
Field notes on software that ships.
Practical, technical writing from the Appsarmy team — mobile, AI, fintech, and the engineering behind getting software into production. No fluff, no listicles.
Core banking integration: what actually connects to what
Protocol translation is the easy part. Idempotency, ambiguous timeouts and the three reconciliations are what decide whether an integration holds.
Read the articleCustomising OBDX without breaking your next upgrade
Extension points per tier, what Oracle will not let you override, and why most upgrade pain is self-inflicted.
Read the articleSecuring a Flutter banking app: pinning, RASP and root detection
More banking apps have been taken offline by their own certificate pinning than saved by it. What each control buys, and the rotation mistake to avoid.
Read the articleHow to build a mobile banking app
Written for a bank, not a fintech startup. Compliance is not your constraint — the core's API surface, channel parity and migrating existing customers are.
Read the articleHow to write a software RFP
From the side that reads them. Why ambiguity gets priced rather than queried, and the questions that produce answers worth comparing.
Read the articleIs Flutter ready for a bank's app? An honest risk assessment
Not whether it can build the app — it can. The questions a risk committee actually asks: continuity, platform-version lag, hiring, and accessibility.
Read the articleHow to modernise a legacy app without a rewrite
Big-bang rewrites fail for reasons that have nothing to do with engineering skill. The incremental alternative, and the four-way decision to make per component.
Read the articleGDPR when you outsource development to India
Outsourcing moves the work, not the liability. What a DPA, standard contractual clauses and a transfer impact assessment have to cover — and the scoping question that removes most of the risk.
Read the articleSelf-hosted vs managed CI/CD: who keeps the source
Usually argued on cost and features. The decision that matters is where your source code executes — and there is a third option most comparisons leave out.
Read the articleOn-prem vs cloud AI inference: the real cost tradeoffs
Cloud inference is cheap to start and expensive to scale. A practical look at when on-prem or edge inference wins on cost, latency, and data control — and when it doesn't.
Read the articleFlutter vs React Native for enterprise apps
Both ship genuinely native apps. The honest decision comes down to your team, your existing codebase, and the kind of UI you're building — not a benchmark.
Read the articleHow to build a fintech app: compliance and architecture
The hard parts of a fintech app aren't the screens. A walk through the compliance and architecture decisions — auth, core integration, PCI DSS, KYC — that make or break it.
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