3+ years building and owning backend systems on a production distributed platform. Right now that means leading a three-engineer team at Mulltiply, a WhatsApp-first B2B commerce platform — where the messaging API is the storefront, so latency, idempotency and multi-tenancy are the whole game.
- 🏗️ 8+ Node.js microservices on Kubernetes (ArgoCD, BullMQ, Postgres, Redis) processing 10,000+ WhatsApp messages daily across 70+ business accounts — a multi-tenant routing layer lets one WhatsApp number serve many stores.
- ⚡ Cut WhatsApp order response 500ms+ → under 200ms (5 sequential API calls refactored to 2), and API response times 60% faster (100ms+ → under 50ms) at a 99.9% request success rate.
- 🔁 Built a bidirectional Tally ERP sync — two-way master/transaction sync, WhatsApp invoice delivery, idempotency guards on every op. Killed manual cross-system accounting.
- 🧠 Designed the AI chatbot decisioning architecture — intent classification, cart extraction, price negotiation, multilingual — implemented in LangGraph/Python.
- 🤖 Shipped a 5-agent LLM marketing system solo: CMO, Content, Graphic Designer, FB Handler and Analyst agents take a campaign brief → live Meta ad, with DALL·E 3 creatives, approval gates and full token/latency/cost audit logging.
- 🌐 Before this: founded SoloNodes in high school — hosting business, 10k+ Discord community, eventually sold it.
- 🎓 BCA (Hons.) Data Security, SICSR — Symbiosis International University, Pune (Aug 2022 – May 2025, CGPA 8.61).
📍 Noida, India · 💬 Ask me about WhatsApp Cloud API, Tally/TDL, or multi-agent LLM pipelines · 📄 Full story → aayushgoel.dev/about
| Project | What it does | Stack |
|---|---|---|
| Tickety ⭐ 80+ | Discord ticket system — claim, transcripts, permission handling baked in | Node.js Discord.js |
| BrokenDisc ⭐ 70+ | No-setup Discord music bot — queues, filters, multi-source playback | Node.js Discord.js |
| WA Bulk Messenger | WhatsApp campaign tool with scheduling, rate limiting, delivery tracking | Node.js PostgreSQL |
| TravelEase | AI trip planner generating itineraries from preferences + constraints | Node.js EJS LLM |
| Daily Engineering Report (internal) | Nightly n8n job: diffs 16 repos dev↔prod by SHA, categorises commits, matches them to ClickUp via LLM, threads per-repo summaries into Slack | n8n GitHub API OpenAI ClickUp Slack |
| Discord Bots (freelance) | 20+ custom bots delivered — moderation, economy, game integrations | Node.js Discord.js |
Backend
Data & Infra
AI
RAG LangGraph Multi-agent orchestration Intent Classification
Integrations
Tally ERP / TDL Shiprocket Event-driven Systems
Frontend
- 🥇 Winner — Internal Hackathon, SICSR (Dec 2024): led a team to a working solution in 24 hours.
- 💼 Promoted to Engineering Lead at Mulltiply (Feb 2026) after joining as a Full Stack Engineer in Jan 2025. Ran a full intern hiring cycle for 4 interns.
- 📜 Certified Software Engineer Intern — HackerRank (Mar 2024): Node.js, Web Development, MySQL/MongoDB.
- 📈 Accountable for 99.9% request success rate, sub-50ms API response, 10,000+ messages/day and 70+ business accounts in production.
Open to conversations about backend architecture, conversational commerce, and production LLM systems — mail@aayushgoel.dev