Principal Engineer • AI Infra

Hi, I’m Manoj. I design and scale AI‑powered, real‑time systems.

From RAG architectures and LangChain pipelines to microservices running on Kubernetes and Kafka—my work blends reliability, speed, and developer experience.

 60 → 5000 concurrency  50% infra cost down  98% CSAT
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Currently: Principal Engineer @ Symbl.ai • Building real‑time AI assist & eval systems

Technical Skills

Systems that stay fast at scale

A compact snapshot of tools I use to ship reliable AI & backend products.

AI & RAG

RAG-based Architectures LangChain Vector DBs Prompt Eng

Languages

Python Node.js Java

Platform

Kubernetes Docker Kafka RabbitMQ

Cloud & Infra

AWS GCP Microservices Observability

Projects

Selected work

Call Score

Call Score

Sales call analysis • transcripts • criteria‑based scoring

Real-Time Assist

Real-Time Assist

Live RAG suggestions over WebSocket • low latency

Bhagavad Gita Chatbot

Bhagavad Gita Chatbot

Conversational retrieval • Gemini • ChromaDB

Bus Tracking

Bus Tracking & ETA

1M+ GPS/day • microservices • ETA models

Article Recommendation

Article Recommendation

0.5M crawls/day • ranking • user signals

Project

Title

Description

Experience

Timeline

Principal Engineer — Symbl.ai

May 2020 — Present

  • Scaled concurrency from 60 → 5000 for real-time systems.
  • Reduced infra cost by 50% with targeted optimizations.
  • Shipped standards and pipelines that cut defects by 20%.
  • Direct client support with 98% satisfaction.

Software Engineer III — Chalo.com

Dec 2017 — May 2020

  • Monolith → microservices for 1M+ GPS records/day.
  • CI/CD that reduced manual work by 80%.
  • Mentored developers; productivity up 30%.
  • Built ticketing platform with 40k+ MAUs.

Senior Software Developer — Crowdfire

Jun 2015 — Dec 2017

  • Crawled 0.5M+ articles/day for recommendations.
  • Backend optimizations cut load times by 40%.
  • Analytics for 100k+ profiles/day.

System Engineer — Tata Consultancy Services

Mar 2013 — May 2015

  • DB administration improving reliability by 30%.
  • Designed schemas reducing query time by 20%.

Contact

Let’s build something

Email
manoj@manojmali.com
Phone
+91 9420759196
GitHub
/MinsterMind
LinkedIn
/minstermind