Hariom Sharma

Built most of GrowthDay from scratch across Next.js, React, TypeScript, Node.js/GraphQL, AWS, Vercel, and React Native; helped scale the product from 10K to 400K+ users. Owned web, backend, mobile, infrastructure, auth, payments, analytics, reporting, enterprise dashboards, search, onboarding, live events, coaching, courses, chat, and mobile flows. Built the complete payment system with Stripe, subscriptions, Apple Pay, Google Pay, Link, Affirm/Klarna BNPL, checkout flows, content gating, payment analytics, recovery paths, and CMS-controlled marketing campaigns. Built customer journey and growth systems including Web2App onboarding, activation funnels, CMS-driven campaigns, experiment variants, Mixpanel/Statsig events, Rudderstack pipelines, GA/GTM, Braze/Liquid workflows, and drop-off analysis. Built real-time product surfaces for live events, chat, presence, WebSockets, WebRTC/100ms video, near-real-time viewers, and high-traffic community/coaching experiences. Improved checkout conversion by 9%, reduced Payment/SCA failures by 25%, accelerated onboarding loads by 30%, improved AWS scalability 20x, and reduced infrastructure costs by 25%. Led 15+ engineers across frontend, mobile, backend, QA, and DevOps while staying hands-on with architecture, API contracts, code reviews, production debugging, mentoring, weekly updates, and cross-functional delivery.

Led React/GraphQL platform work for Appointy, a scheduling SaaS serving 1M+ users with booking, availability, billing, reporting, staffing, customer/provider workflows, and business-hour rules. Architected Saastack, a 232-package modular SaaS platform with TypeScript, React, Relay GraphQL, plugin hooks, reusable product modules, PWA/offline support, routing, accessibility, i18n, RTL, and white-label configuration. Built internal CLI tooling to create, manage, standardize, and maintain reusable packages so teams could ship modular product features faster and with fewer regressions. Built complex UI and business workflows for availability rules, timezone handling, multi-step booking, drag-drop scheduling, staff allocation, room calendars, dashboards, billing, reporting, and multi-location operations. Built scheduling products for Google across fitness, restaurant, spa, and massage booking, and built room conference scheduling for Telefonica with room, calendar, staffing, and CMS/TMS integrations. Reduced load times from 15 seconds to under 1 second and shortened new product delivery from roughly a year to around a month while leading 4-8 engineers across product/platform work.