# Aayush Goel

> Aayush Goel is an Engineering Lead at Mulltiply Tech India Pvt. Ltd. (Noida, India). He owns hard integration surfaces end to end: conversational commerce on WhatsApp and Instagram, two Indian ERP integrations (Tally and BUSY), and production LLM systems. He is sole or primary author of nine repositories and the single largest contributor to a 16,500-commit core API, and specialises in distributed Node.js microservices on Kubernetes, messaging infrastructure, and ERP synchronisation.

Canonical site: https://aayushgoel.dev/
Contact: mail@aayushgoel.dev
GitHub: https://github.com/Aayush-683
LinkedIn: https://linkedin.com/in/goel-aayush

## Quick facts

- Name: Aayush Goel
- Role: Engineering Lead, Mulltiply Tech India Pvt. Ltd. (Feb 2026 – present). Joined Jan 2025 as Full Stack Engineer.
- Location: Noida, Uttar Pradesh, India
- Education: BCA (Hons.) in Data Security, Symbiosis Institute of Computer Studies and Research (SICSR), Pune — Aug 2022 to May 2025, CGPA 8.61
- Core stack: Node.js, JavaScript/TypeScript, Python, PostgreSQL, Redis/DragonflyDB, GraphQL, Kubernetes, ArgoCD, BullMQ
- Domain expertise: WhatsApp Cloud API, WhatsApp Flows, Instagram Graph API, Tally ERP (TDL), BUSY ERP, ONDC/Beckn, multi-tenant B2B commerce, event-driven systems, n8n automation, RAG and multi-agent LLM systems
- Measured results: catalogue search p90 281ms to 29ms after fixing a partial index; WhatsApp chatbot response ~10s to ~1-2s; a Tally add-on of ~6,450 lines of TDL across 19 modules and 22 releases
- Previously: Founder of SoloNodes.net (May 2020 – Jul 2022), a game server hosting business started in high school and later sold
- Languages: English, Hindi

## Pages

- [Home](https://aayushgoel.dev/): Overview, experience, projects, and skills.
- [About](https://aayushgoel.dev/about.html): Detailed biography, career timeline, engineering focus areas, and frequently asked questions.
- [Writing](https://aayushgoel.dev/blog/): Technical posts on backend systems, ERP integration and messaging infrastructure.
- [Two-way Tally ERP sync](https://aayushgoel.dev/blog/tally-erp-two-way-sync.html): Building a bidirectional Tally sync in Node.js over Tally's XML-over-HTTP interface, and using REMOTEID for idempotent voucher upserts.
- [Multi-tenant WhatsApp Cloud API routing](https://aayushgoel.dev/blog/multi-tenant-whatsapp-cloud-api.html): Serving many storefronts from a single WhatsApp business number by resolving the tenant from conversation state.
- [Resume](https://aayushgoel.dev/resume.html): Full resume in HTML.
- [Resume PDF](https://aayushgoel.dev/assets/Aayush_Goel_Engineering_Lead_2026.pdf): Downloadable PDF resume.

## Optional

- [Full profile in one file](https://aayushgoel.dev/llms-full.txt): Complete plain-text profile for ingestion.
- [RSS feed](https://aayushgoel.dev/feed.xml): New writing.
- [GitHub profile](https://github.com/Aayush-683): Open-source projects, including Tickety (Discord ticket bot, 80+ stars) and BrokenDisc (Discord music bot, 70+ stars).