---
title: "Mayank Gautam - SDE II (Backend Engineer) in West Delhi | Tal"
description: "Meet Mayank Gautam, SDE-II @ EXL | Backend Engineer (Java · Spring Boot · Node.js) | Distributed Systems · Real-Time AI Pipelines | AWS · Azure · Kafka | LeetCode 350+ based in West Delhi. AI stack includes antigravity and claudecode. Explore public work links including github."
image: "https://tal.club/meet/mayank-gautam/share-image"
---

# Mayank Gautam on Tal

## Headline

SDE\-II @ EXL \| Backend Engineer \(Java · Spring Boot · Node\.js\) \| Distributed Systems · Real\-Time AI Pipelines \| AWS · Azure · Kafka \| LeetCode 350\+

## About

I'm a backend\-focused Software Engineer with 3\+ years of experience designing and shipping high\-throughput, cloud\-native systems that handle real\-world scale\. Currently at EXL Services, I'm architecting a real\-time AI Voice Assistant Platform on Azure — an end\-to\-end STT → LLM → TTS pipeline supporting 10,000\+ concurrent sessions at sub\-200ms latency, built on Azure OpenAI, WebSockets, Kafka, Azure Functions, Cosmos DB, and Redis\. Before that, at Real Time Data Services \(RTDS\), I built and owned core modules of Ace Cloud Platform — a multi\-tenant SaaS product serving 200\+ enterprise clients with 99\.9% uptime — and led the engineering team as Head of Code Review, mentoring 4 interns \(3 converted to FTEs\)\. What I care about: → Event\-driven architecture and async pipelines that scale → Clean, testable backend code with clear ownership → Reducing latency and infrastructure cost through smart system design → Building teams that review, learn, and ship with confidence Core Stack: Node\.js · TypeScript · NestJS · Kafka · Azure \(Functions, Service Bus, OpenAI, Cosmos DB, Redis\) · AWS \(Lambda, SQS, EC2\) · MongoDB · WebSockets · Docker · CI/CD Open to backend\-heavy roles at product companies working on distributed systems, AI infrastructure, or cloud platforms\. 📩 m\.mayankgautam99@gmail\.com

## Location

West Delhi

## AI stack

antigravity

claudecode

## Work experience

SDE II \(Backend Engineer\) at EXL, Sep 2025 \- Present · 1 yr, Noida, Building a production\-grade Real\-Time AI Voice Assistant Platform on Azure — an end\-to\-end STT → LLM → TTS pipeline handling 10,000\+ concurrent sessions at sub\-200ms latency\. Key contributions: → Architected the full voice pipeline using Azure Speech \(STT/TTS\) and Azure OpenAI, with WebSocket\-based bidirectional audio streaming via Twilio webhooks and adaptive flow control\. → Designed serverless Azure Functions \(Service Bus \+ HTTP triggers\) for event\-driven orchestration across the entire call lifecycle — from inbound call to transcript delivery\. → Built a multi\-turn LLM orchestration layer with dynamic prompt engineering, context window management, and session\-aware conversational flow\. → Introduced Redis caching for hot\-path payloads → reduced p99 latency by 30%\. Integrated Azure Application Insights for distributed tracing → cut production MTTR by 40%\. → Reduced infrastructure cost by 40% through serverless autoscaling, async Kafka pipelines, and right\-sizing of Azure Functions and AWS Lambda\. → Secured cross\-platform inter\-service communication over Azure VNet; integrated with payment provider via authenticated REST APIs\. Stack: Node\.js · Azure Functions · Azure OpenAI · Kafka · Azure Service Bus · WebSockets · Twilio · Cosmos DB · Redis · AWS Lambda · Azure VNet

Software Development Engineer I at Real Time Data Services, Jul 2022 \- Aug 2025 · 3 yrs 2 mos, Gurugram, Full\-stack backend ownership across two major products: a multi\-tenant SaaS cloud platform and a Security Information & Event Management \(SIEM\) system\. Ace Cloud Platform — Multi\-Tenant SaaS \(AWS\): → Built and maintained a platform serving 200\+ enterprise clients at 99\.9% uptime, managing EC2 instances, volumes, snapshots, security groups, and backup workflows\. → Implemented OAuth 2\.0, JWT, and RBAC\-based auth with strict tenant isolation and compliance enforcement across all modules\. → Delivered an automated billing and invoicing system that saved the sales team 20\+ hours/month\. → Built CRON\-driven automation for pre\-paid alerts \(saved 2 hrs/day\) and post\-trial account suspension \(saved 6 hrs/week\)\. → Served as Head of Code Review; introduced unit testing culture; mentored 4 interns — 3 converted to full\-time engineers\. → Implemented disaster recovery with automated failover for high\-availability business continuity\. Ace SIEM — Security Platform: → Developed auth, session\-switching, and structured\-logging modules for real\-time security event correlation\. → Automated device onboarding via a one\-click Bash script \+ webhook, eliminating 30 min of manual setup per deployment\. → Refactored the MongoDB base connection class and query patterns → improved data retrieval efficiency by 25%\. → Overhauled RBAC for fine\-grained access control; built voucher, discount, and payment gateway integrations end\-to\-end\. Stack: Node\.js · NestJS · ExpressJS · MongoDB · AWS \(EC2, S3, Lambda\) · JWT · RBAC · CRON · Jest · Docker

## Education

Bachelor of Technology \- BTech, Computer Software Engineering, Maharaja Surajmal Institute Of Technology

Diploma in Computer Engineering, Guru nanak dev institute of technology

## Public links

- github: https://github\.com/mayank\-gautam

[View the original profile](https://tal.club/meet/mayank-gautam)

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