MMayank Yadav— Backend & Web3 Engineer
AboutWorkProjectsStatsWritingContact
Resume

Get in touch

Let's build
something that
stays shipped.

mayank4code@gmail.com

Vidisha, Madhya Pradesh, India · +91-9340090198

© 2026 Mayank Yadav. Built with Next.js + R3F.

—Writing

Notes from production.

Long-form pieces on backends, Web3 infra, and what's broken at the edges of the stack.

  • 01

    Building an ERC-4337 Bundler From Scratch

    A practical, end-to-end walkthrough of writing a UserOperation bundler in Node.js — gas estimation, nonce handling, signature validation, and the gotchas that bit me in production with HyperPNL.

    web3ERC-4337nodeinfra
    2026-04
  • 02

    Holding 99% Uptime With 100k Users on a Single VPS

    Yuva Portal ran for two years on a Linux VPS with PM2, MongoDB, and zero managed services. Here's what kept it boring.

    backendnodeopsmongodb
    2026-02