Quentin Nivelais

Web3 Infrastructure Architect&Account Abstraction Specialist

I help blockchain projects ship production-ready infrastructure and wallet UX that doesn't suck.

Currently CTO at Frak Labs.

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Latest Articles

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Jun 1, 2026

A Bank Account for a Smart Contract: Wiring Monerium Into a Self-Custodial Wallet

How we gave Frak's self-custodial smart-account wallet a real IBAN by integrating Monerium, a licensed e-money institution: a backend-free OAuth2 + PKCE connect flow, token refresh coalescing, an nginx CORS workaround for Tauri, ERC-1271 wallet linking with deploy-before-sign, fully delegated KYC, and a signed EURe redeem off-ramp.

May 28, 2026

One Translation Source for a Shopify App That Renders in Four Different Runtimes

How we localized Frak's Shopify app across a storefront banner, a product-page share button, and a post-purchase checkout card (three runtimes reading two different Shopify APIs) by making a single merchant-owned frak_i18n metaobject the source of truth, wired into Shopify's native Translate & Adapt.

May 19, 2026

From 9 Minutes to 2: Rebuilding the Wallet's CI on Our Own Platform

How the wallet's deploy pipeline went from a 9-minute build to a 4-minute cold run and 2-minute cached run by killing a monolithic Dockerfile.base, moving BuildKit in-cluster, wiring a Zot registry cache, and sharing apt + bun caches across six images.

May 18, 2026

Bringing CI Back Home: A Hetzner Platform for the Frak Stack

How we stood up a Hetzner-based platform (ARC runners, remote BuildKit over mTLS, an in-cluster Zot OCI registry, a Verdaccio NPM mirror, and a Kyverno policy that rewrites every pod's NPM_REGISTRY), and what we'd do differently after fighting Pulumi for two days.

May 15, 2026

The Ring Architecture: Shipping a Wallet That Costs Almost Nothing to Embed

How we redesigned the listener iframe's boot so partner websites pay a 3-chunk price for our wallet on first paint, then preload the rest lazily: by migrating from React to Preact, splitting the app into eager and lazy rings, and teaching the SDK to predict which lazy chunks to fetch.