What we learn on projects: architecture, tools, traps, and what we solved.
An eval that's not in CI is not an eval. Here's the evals-as-code workflow we run on every RAG project.
MNB, NAV, and NAIH all have 2026 obligations that hit Hungarian fintechs · this is the compact calendar of what's due and when.
Gasless UX is a product win. Meta-tx relayers are a security surface. Here's how to ship both safely.
Twelve real checkout experiments from the last 18 months · uplift numbers, segment effects, and which we now ship by default.
Offline-first is a 4-layer problem, not a feature flag. Here's the architecture we ship across Expo + React Native projects.
Four payment gateways, Hungarian-market reality check. Which we pick for which job, with fee math and integration pain points.
Eight invariant patterns worth stealing · we run these on every audit and they keep finding real bugs.
Practical KYC integration for EU + Hungarian fintech · provider comparison, MNB requirements, and the integration mistakes we won't repeat.
Expo is the default for most new apps in 2026. But not all. Here's the frame we use when clients ask.
AI security isn't a checkbox. Here's the nine-point audit we run on every LLM system we ship, plus which bugs turn up most often on systems we didn't build.
Fourteen days from zero to a live AI chatbot your company can actually use. The schedule we follow on every client project, down to what happens on each day.
What NIS2 actually demands from a mid-size SaaS: incident reporting, supply-chain, access control, and 3 basic rules we run ourselves.
Sixteen gas patterns, ranked by real-world impact on the contracts we audited in 2025.
The prompt injection surface is not a single bug · it's five categories, each with a distinct defence. Here's our playbook.
MCP is the most important agent standard of the past year. What it means in practice, where we use it, and why to bet on it in 2026.
From demo to live system: the retrieval, eval, guardrails and cost control we run on every AI project we ship.
There isn't one correct answer. Just six hard questions that resolve it: RN or native. Here's how we decide on projects.
A checklist for the last days before mainnet: threat model, tests, fuzz, deploy, monitor · 30+ items we never skip.
A multi-tenant Next.js SaaS reference from 2026: custom domains, RLS, per-tenant feature flags, and billing. No hand-waving.
'We train on user data' · one sentence most startups drop without friction. In 2026 it opens a GDPR door. Here's the concrete checklist.
One sentence is enough. EN or HU.