Hariom Sharma
Staff Frontend & Full-Stack Engineer · AI Agent Platforms · Claude Certified Architect
Dubai, UAEcontact@harryy.me+971 50 737 2969harryy.megithub.com/harryy2510linkedin.com/in/hariom-sharma
Summary
Staff frontend and full-stack engineer with 11 years taking products from idea to scale, now building AI agent platforms as technical co-founder of Five Star Solutions. Grew GrowthDay from 10K to 500K+ users while leading 15+ engineers, and architected Appointy’s 232-package platform for 1M+ users, used by Google and Telefónica.
Experience
Five Star Solutions · Technical Co-Founder
Jul 2026 to Present
- Own platform and architecture for AI operators that businesses run inside Slack, Microsoft Teams, iMessage, and Telegram, with people approving every consequential action.
- Built configurable agents, reusable skills, schedules, delegation, knowledge bases, memory, and evals on Cloudflare Workers and Durable Objects.
- Connected agents to 1,000+ tools through Composio and MCP plus a central data warehouse, with audit logs, tenant isolation, and PII boundaries from day one.
GrowthDay · Lead Frontend Engineer → Technical Lead
Jan 2021 to Present
Full-time to Apr 2026, contract since May 2026
- Built most of the platform from scratch across Next.js, React, TypeScript, Node.js/GraphQL, AWS, and React Native, growing it from 10K to 500K+ users.
- Led 15+ engineers across frontend, mobile, backend, QA, and DevOps while staying hands-on in architecture, code review, and production debugging.
- Raised checkout conversion 9% and cut payment and SCA failures 25% by rebuilding Stripe billing with Apple Pay, Google Pay, Link, and BNPL.
- Scaled AWS 20x at 25% lower cost, shipped live video for 7,000 to 8,000 concurrent attendees, and moved 300K+ users to DynamoDB with no downtime.
- Introduced AI-assisted engineering across engineering and growth teams: Claude Code and Codex workflows, reusable skills, and MCP connectors.
Appointy · Intern → Engineering Lead
2015 to 2021
- Architected Saastack, a 232-package React, Relay, and GraphQL SaaS platform with plugin hooks, i18n/RTL, and white-label configuration, serving 1M+ users.
- Cut page loads from 15 seconds to under 1 second and led a team of 8 engineers.
- Built CLI scaffolding that cut new-product delivery from about a year to about a month.
- Google (via Appointy, 2019 to 2020): Scheduling products for fitness classes, restaurant, spa, and massage booking.
- Telefónica (via Appointy, 2018 to 2019): Conference room scheduling with recurring meetings, calendars, and staffing.
Contract Engineering
Speak To Freedom · Software Engineer
Mar 2026 to Present
Outreach platform: Typesense lead search over a millions-scale contact database, Instantly campaigns, Zapmail provisioning, GoHighLevel sync, and a remote MCP server.
EventRoostr · Senior Developer
Dec 2025 to Jan 2026
Stripe checkout with saved cards, ACH, installments, Apple Pay, Google Pay, and automatic tax across Next.js and Laravel.
Snappy Kraken · Senior Frontend Engineer
Aug 2021 to Present
Reusable HubSpot CMS templates and campaign pages, stronger SEO and Lighthouse scores, and frontend team hiring and onboarding.
Aicadium · Frontend Developer
May to Nov 2022
NOVA web app for Temasek: React/MUI dashboards for KPI monitoring, peer benchmarking, and consent workflows.
Products
Dexby.ai · Founder · beta
Tools and sign-in for AI agents: 1,000+ connectors, about 7,500 tools, per-user sessions, managed OAuth, MCP, and a TypeScript SDK.
Jetseen · Co-owner
Local-first iOS app that tracks visa and tax-residency days against Schengen, UAE, UK, and US rules. Live on the App Store in 49 languages.
Open Source
dotagent · Agent tooling
Skills and shared rules for Claude Code, Codex, and Gemini CLI.
geocoded · API
Free geography API on Cloudflare Workers and D1: 252 countries, 235K+ cities.
web-smith · AI tooling
Rebuilds sites as Astro and Tailwind projects with Lighthouse and visual-diff checks.
react-file-browser · npm package
React file manager for S3, R2, and Supabase Storage, on npm.
Lena · npm packages
Encrypted, local-first app infrastructure in 14 npm packages.
Skills
AI & agents: Claude Code, Codex, MCP servers, agent workflows, Mastra, Composio, Cloudflare Agents, OpenAI
Frontend & mobile: React, TypeScript, Next.js, TanStack Start, React Native, Expo, Tailwind CSS, accessibility, performance
Backend & cloud: Node.js, GraphQL, PostgreSQL, DynamoDB, Supabase, AWS, Cloudflare Workers, Terraform, Docker
Product & quality: Stripe, Mixpanel, Statsig, Playwright, Jest, Cypress, team leadership, hiring, mentoring
Languages: Hindi (Native), English
Certification
Claude Certified Architect - Foundations
Anthropic · June 6, 2026 to June 6, 2027
Education
Bachelor of Technology
Maulana Azad National Institute of Technology, India · 2013 to 2017