mayank.dev

MAYANK

Builder · Founder · Engineer

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ORIGIN

"I build things because I can't stop thinking about what doesn't exist yet."

Lead engineer by day.
Founder by compulsion.
Currently stacking products toward something larger.

The Ventures

Three products. Three different problems. One direction.

01 / DEVTOOLS
Moqyy
Mock HTTP responses without touching your backend. Built for frontend devs who can't wait on APIs.
MVP LIVE
↗
02 / OBSERVABILITY
Velyn
Turn production noise into reproducible bugs and Playwright tests. Automatically.
LIVE
↗
03 / FINTECH
Billeaf
Invoicing that gets out of your way. Create, send, get paid.
LIVE
↗

The Craft

There's more if you look.

✦
CSS Lab
I practice CSS the way some people practice guitar. Here's what that looks like.
◈
Arcade
I also build stupid fun things. Chidiya Ud — tap to fly, try not to die.

The Professional

I don't just build my own things.

CURRENTLY
Lead SDE
@ SaaS Startup
Managing a team of engineers
Shipping production software daily
Building systems that scale
STACK
NestJSNode.jsNext.jsReactVue.jsMySQLMongoDBPHPThree.jsChrome ExtSDK DesignREST APIs

Under The Hood

Pretty interfaces are easy. What's underneath is where it gets interesting.

01
Architecture
  • Event-driven pipelines for real-time observability (Velyn)
  • Multi-tenant SaaS patterns across products
  • Public SDK design — APIs used by other devs in production
  • Service layer separation, domain modeling
02
Backend
  • NestJS + Node.js for production-grade APIs
  • Auth, RBAC, multi-tenancy from scratch
  • MySQL schema design, MongoDB document modeling
  • Webhooks, background jobs, queues
03
Engineering
  • Leading and reviewing code for a team
  • Balancing product velocity vs. tech debt
  • Full-stack shipping — solo, across 3 live products
  • All products maintained and iterated in parallel

The Agent

You've scrolled this far. You probably have questions.

M
Hey. I'm Mayank's AI agent. Ask me anything — his work, products, what he's building, or what drives him.

"Building toward something bigger. Follow along or build with me."

Find me at

GitHubTwitter / XLinkedInEmail

© 2026 Mayank — All rights reserved

CSS Lab
Pure CSS experiments. No frameworks, no shortcuts.
EXPERIMENT 01
EXPERIMENT 02
EXPERIMENT 03
COMING SOON
COMING SOON
COMING SOON
Chidiya Ud
SPACE or click to fly. Don't hit the pipes.
SPACE — flyR — restartScore: 0