Quentin Nivelais

Web3 Infrastructure Architect&Account Abstraction Specialist

FOCUS:Frak LabsRANK:#2 Global Gas GolfingINFRA:-85% Cost

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

Currently CTO at Frak Labs.

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Chasing a Bun Memory Leak for 3 Days (The Answer Was 'Just Restart')

3 days debugging a Bun RSS memory leak on a Elysia.js backend. The fix was a scheduled pod restart via a health endpoint that lies to Kubernetes — and why we couldn't do anything else.

Writing a Native WebAuthn Tauri Plugin from Scratch (iOS + Android)

A step-by-step look at building a custom Tauri plugin for WebAuthn/passkeys on iOS and Android — including CBOR parsing, COSE key extraction, SPKI DER reconstruction, and the mobile dev TLS workaround.

The Supporting Cast: L'Atelier's Infrastructure Beyond the Orchestrator

An AI sandbox orchestrator needs more than just an orchestrator. Here's how CLIProxy, shared binary volumes, Verdaccio, and a single Helm chart turn L'Atelier from a VM launcher into a dev platform.

L'Atelier: Why I Deleted 8,702 Lines of Code to Move to Kubernetes

L'Atelier just went through its biggest architectural shift yet. I swapped a custom bare-metal Firecracker orchestrator for Kubernetes and Kata Containers — deleted 8,702 lines of code, gained portability, and traded sub-second boots for a system I can actually maintain.

Talk to Your AI Dev Team: L'Atelier Gets a Slack Bot and an MCP Server

L'Atelier now dispatches AI coding agents directly from Slack, powered by an MCP server and a system sandbox running an AI dispatcher agent. Here's how the architecture evolved.

Selected Work

Case studies →

Frak Labs

Co-Founder & CTO

Built WebAuthn smart wallet processing 100k+ daily loads. Cut infra costs by 85%.

#Account Abstraction#Kubernetes#Smart Contracts

Account Abstraction

Production Expert

Production WebAuthn validator, Smart Sessions, ERC-7579 modules. Contributed to ZeroDev & Pimlico SDKs.

#ERC-4337#ERC-7579#WebAuthn

Infrastructure

Cost Optimization

Multi-cloud K8s without YAML. Contributors to eRPC, Ponder, SST. AWS to self-hosted migrations.

#Pulumi#Kubernetes#eRPC

Gas Golfing

Ranked #2 Global

Extreme EVM optimization contest. Deep assembly & memory management expertise.

#Yul#Assembly#EVM

Engineering Impact

IaC:SST + Pulumi + K8s
Backend:Bun + Elysia
Frontend:TanStack + Nitro
EVM:Foundry + Viem + Ponder
AA:Kernel + Permissionless + Pimlico
Mobile:Tauri (React + Rust)

I don't just use the tools—I write the code for the tools you use.

ZeroDev KernelAccount Abstraction
WebAuthn validator·EIP-712 typed data·Gas optimizations
eRPCRPC Load Balancer
JS/TS config·CLI tooling·Config validation
Permissionless.jsPimlico SDK
Kernel wallet support
Other
SST·Eliza·Jokerace

Get in Touch

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