Our Thinking
Notes from the build
Practical takes on software development, AI integration, and shipping products that hold up.
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The SvelteKit Startup Build Log: Firestore Schema, Auth Model, and the Four Features We Had to Build Ourselves
A concrete build log from production SvelteKit + Firebase applications: the auth pattern in hooks.server.ts, the Firestore collection shape behind CMS pages, form handling with actions and Zod, and the four features SvelteKit ships nothing for.
The SaaS Ceiling: 5 Signals That Tell You a Tool Has Stopped Paying for Itself
The diagnostic signals that flip the economics from buying SaaS to building custom software, including the export tax nobody prices in and the workaround labour that never shows up on an invoice.
The Dependency Diligence Pass: What npm audit, Lockfile Age, and Transitive Bloat Revealed in Four Client Codebases
A dependency-layer technical due diligence method: how to score lockfile age, majors behind, unmaintained transitive packages, and native-module upgrade blockers, and convert the gap into engineer-days an investor can price.
The Health-Tech Agency Scorecard: 12 Capabilities a Diagnostics Startup Actually Buys (With Our Own Scores)
A capability-by-capability scorecard for evaluating software agencies for a diagnostics startup: 12 named capabilities, the evidence to demand for each, Jaspero's honest 0-5 score, and the four we refer out.
The React Native Agency Shortlist: 11 Screening Questions, Our Own Answers, and How to Verify Each One
A founder's screening rubric for hiring a React Native agency in Europe, with Jaspero's own filled-in answers: production evidence, crash-free rates, rate bands, contract vehicles, and the projects we refuse.
React Native in Production Across Four Engagements: Upgrade Log, Crash Rates, Store Outcomes, and the Native Modules We Wrote
Cross-project operational evidence from four production React Native apps: what broke in each upgrade, how crash-free session rates moved, what an App Store rejection actually costs, and when writing your own native module is the right call.
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