Aman Tyagi

Backend Engineer · India

amantyagi2k@gmail.comgithub.com/amantyagi22linkedin.com/in/aman-tyagi-700a06190

Backend engineer with 3+ years across distributed systems, performance engineering, data modeling, and AI/RAG. Node.js, TypeScript, MongoDB, Redis, GraphQL, AWS. Available for backend consulting.

Experience

Delightree Senior Software Engineer

06.2025 — present

  • Multi-tenant RAG engine. Ask a question in plain English, get an answer pulled from the company's own manuals. (no franchise can ever see another's documents)
  • Integration platform. One shared way to connect outside tools — HubSpot, QuickBooks, Zapier and two more. (adding a sixth provider takes an afternoon)
  • Async analytics pipeline. Moved the heavy number-crunching to the background, on a schedule. (reports never slow down the app)
  • Support ticketing domain. Designed and built the whole support-ticket system, start to finish. (a whole support product, built from nothing)
  • Data-model migration. Restructured how the data was stored so the app could find it faster. (halved the database work per read)
  • Partner ingestion API. A documented way for outside companies to send us their data safely. (partners integrate without us writing code)
  • Security hardening. Found passwords leaking into our logs, and stopped it at the source. (closed a credential leak before anyone found it)

Playo Software Engineer

09.2024 — 06.2025

  • Dense-ranking leaderboard. Precomputed the rankings and kept them in fast memory, instead of rebuilding them every visit. (the slowest screen became the fastest)
  • Geospatial search. Made 'find places near me' actually fast. (search stopped feeling broken)
  • Chat migration. Moved every user's chat history to a new provider without taking the app down. (600k users moved, nobody noticed)

Teal India Software Engineer

02.2023 — 08.2024

  • Real-time analytics. Live dashboards that kept updating correctly even as we added more servers. (dashboards stayed live as servers scaled out)
  • Legal document-extraction framework. Software that reads legal documents and writes the reports itself. (350+ reports a day, no one touching them)

Earlier: Founding Engineer, Duckcart (2022) · DevOps Engineer Intern, Recruit CRM (2022–23).

Skills

core
JavaScript / TypeScript, Node.js / Express, GraphQL (Apollo), Distributed Patterns
data
MongoDB, Aggregation / Indexing, BigQuery, Weaviate
async
Redis, BullMQ, Cron, Webhooks
platform
AWS, Docker
ai
RAG, Vector Search, AWS Bedrock

Focus Areas

Distributed Systems · Performance Engineering · Data Modeling · AI & RAG · API Design

Writing (in progress)

Redis caching strategies · MongoDB aggregation optimization · Scaling Socket.io systems · Event-driven architectures in Node.js