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.
Latest Articles
View all →Pico Kiln - Part 5: Dropping to the Metal with Rust
Migrating the pico-kiln firmware from MicroPython to bare-metal Rust on the RP2350: a compile-time safety boundary, golden-replay tests, hardware stack guards, and plug-and-play provisioning.
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.
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.
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.
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.
Selected Work
Case studies →Frak Labs
Co-Founder & CTOBuilt WebAuthn smart wallet processing 100k+ daily loads. Cut infra costs by 85%.
Account Abstraction
Production ExpertProduction WebAuthn validator, Smart Sessions, ERC-7579 modules. Contributed to ZeroDev & Pimlico SDKs.
Infrastructure
Cost OptimizationMulti-cloud K8s without YAML. Contributors to eRPC, Ponder, SST. AWS to self-hosted migrations.
Gas Golfing
Ranked #2 GlobalExtreme EVM optimization contest. Deep assembly & memory management expertise.
Engineering Impact
I don't just use the tools: I write the code for the tools you use.
Get in Touch
Want to chat about Web3 infrastructure, Account Abstraction, or something you read? Reach out.