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Lead Frontend Engineer → Technical Lead · Jan 2021 to Present

GrowthDay

Built most of the platform from scratch and grew it from 10K to 500K+ users.

www.growthday.com ↗
Users
10K→500K+
Conversion
+9%
Payment Failures
-25%
Scalability
20x
Infra Costs
-25%
Build Time
30s→10s
GrowthDay public homepage screenshot
Public homepage captured from growthday.com.

01 · The problem

GrowthDay was an early-stage personal development platform with live events, coaching sessions, and growth tools. It needed to evolve from a small product serving ~10K users into a scalable platform capable of handling hundreds of thousands of users while simultaneously launching an entirely new enterprise product line for SMEs.

02 · How I built it

  1. APhase 1 (Jan to Jul 2021): Rebuilt the entire frontend from scratch. Introduced new build workflows cutting production build times from 30s to 10s. Integrated comprehensive analytics tooling for data-driven decision-making from day one.
  2. BPhase 2 (Jul 2021 to 2024): Established robust AWS infrastructure with CloudFormation and Terraform. Led the transition from native to hybrid mobile apps with SSR. Built new platform features that drove the userbase from 10K to 500K+.
  3. CPhase 3 (2024 to Apr 2026): Spearheaded enterprise product for SMEs with multi-tenant architecture, enterprise billing, and admin tooling, built as an extension of the consumer platform rather than a separate codebase.
  4. DPhase 4 (May 2026 to present): Moved to a contract role, building internal support, data export, and migration tools on Cloudflare Workers.

03 · Trade-offs

  • Hybrid mobile with SSR over native: +9% checkout conversion, -25% payment failures, 30% faster loads. Single codebase reduced maintenance burden.
  • AWS infrastructure redesign with CloudFormation/Terraform: 20x scalability, 25% cost reduction. Infrastructure became version-controlled and repeatable.
  • Enterprise as extension, not fork: shared core with tenant isolation layered on top. Enterprise features benefit from ongoing consumer platform improvements.
  • Comprehensive analytics from day one: Mixpanel, Rudderstack, Statsig. Every product decision backed by data.

04 · What shipped

  • 500K+ total users on the platform
  • Led 15-engineer team across web, mobile, backend, and infrastructure
  • +9% checkout conversion from hybrid mobile migration
  • -25% payment/SCA failure rate
  • 20x scalability improvement on AWS infrastructure
  • 25% cloud cost reduction
  • New enterprise revenue line launched for SME market
  • Build times cut from 30s to 10s