👋 Anurag Sindhu — Senior Backend Engineer

🟢 Available for opportunities · Remote OK · Bangalore, India 🇮🇳

8+ years building resilient, large-scale systems. Currently SDE-3 at Tmrw (Aditya Birla Group) — turning complex distributed challenges into elegant, performant solutions.

📧 sindhuanurag2@gmail.com · 💼 LinkedIn · 📄 Resume

📊 At a Glance

Experience	Current Level	Companies	Stock CAGR
8+ Years	SDE-3	4	32%

→ whoami
  name:     Anurag Sindhu
  role:     SDE-3 @ Tmrw (Aditya Birla Group)
  location: Bangalore, India 🇮🇳
  exp:      8+ years

→ skills --top
  [0] Node.js / NestJS
  [1] System Design
  [2] MySQL / MongoDB / Redis
  [3] AWS / GCP / Docker

→ status
  open_to_work: true
  remote_ok:    true

→ hire █

🛠️ Tech Stack

Core Technologies

Databases

Cloud & DevOps

🌟 Proficiency

Technology	Proficiency
JavaScript	⭐⭐⭐⭐⭐
Node.js	⭐⭐⭐⭐⭐
TypeScript	⭐⭐⭐⭐⭐
MySQL	⭐⭐⭐⭐⭐
MongoDB	⭐⭐⭐⭐⭐
System Design	⭐⭐⭐⭐⭐
Data Structures	⭐⭐⭐⭐⭐
REST / GraphQL / gRPC	⭐⭐⭐⭐⭐
Testing / Jest	⭐⭐⭐⭐⭐
Redis	⭐⭐⭐⭐⭐
Git	⭐⭐⭐⭐⭐
Docker	⭐⭐⭐★★

💼 Experience

👕 Tmrw (Aditya Birla Group) — SDE-3

Mar 2023 – Present · Bangalore

🔥 Key Achievements

Migrated 1.7 Crore user records (100 GB) from MySQL to MariaDB via LOAD DATA INFILE with under 10 minutes of downtime.
Engineered a Bloom Filter DSA (1 Crore × 20 hash functions) for user presence checks — 25 MB memory tradeoff, constant time complexity, scalable for 10–15 years at 20% annual growth.
Integrated OTP sharing and login in under 1 second via Redis caching and Pub-Sub, achieving 1 Million TPS with p99 latency.
Built a HyperLogLog DSA solution to display unique active users with write-behind caching to reduce latency.
Spearheaded MERN stack + MSA migration at Bewakoof.com (Tmrw Acquisition), achieving a 30% improvement in scalability and 25% increase in system stability.
Headed OAuth and My Account, implementing real-time user migration with a 99% success rate.
Designed and deployed multiple microservices with gRPC and Pub-Sub, integrated with Amazon SQS — scaled to million TPS.
Upgraded customer-related API calls to GraphQL for high performance. Rerouted Shopify calls through a separate app for optimized resource utilization.
Integrated ESLint, Husky, Pino Logging, and robust async error handling, reducing errors by 35%.
Created HLD and LLD documentation templates to standardize architecture decisions across teams.

🛠️ Tech Stack: Node.js gRPC Redis GraphQL AWS SQS NestJS MariaDB Docker

🏥 Medibuddy — SDE-3

Oct 2022 – Jan 2023

🔥 Key Achievements

Replaced Apache ZooKeeper with Gossip Protocol for SMS routing, enhancing reliability, throughput, and latency.
Achieved a 90% performance boost in Medibuddy Surgery’s inventory tool by refactoring MySQL queries for large-scale data control.
Engineered a distributed system for Elasticsearch data synchronization, slashing manual intervention by 93%.
Designed a WhatsApp notification system for maternity appointment reminders, eliminating manual reminder overhead.
Reduced Google Maps API cost by 70% by implementing a cache layer to prevent duplicate calls at scale.
Injected request validation to prevent SQL injection, enhancing system security and reliability.

🛠️ Tech Stack: Node.js MySQL Redis Elasticsearch Gossip Protocol

🏪 Falabella India — Senior Software Engineer

Dec 2019 – Sep 2022

🔥 Key Achievements

Led full lifecycle development of My Account service, achieving 1→100% gradual conversion rollout.
Reduced API response time from 850ms → 510ms via caching, revamped queries, and eliminating redundant API calls.
Reduced latency by 50% with prefetching, algorithm enhancements, and time complexity improvements — plus 100% unit + integration + API test coverage.
Integrated Razorpay for a 20% efficiency boost in transaction processing. Partnered with Flipkart for springverify API integration.
Owned Geo Data and Notification services, maintaining >95% availability.
Streamlined onboarding using Postman, KT videos, and Swagger — achieving a 20% reduction in team integration time.
Improved architecture for better throughput, reduced database costs, and sharpened CPU efficiency.

🛠️ Tech Stack: Node.js REST APIs Redis MySQL Razorpay Microservices

💼 In Time Tec — Software Engineer

Feb 2018 – Dec 2019

🔥 Key Achievements

Completed “Learn and Code” professional development program, mastering clean code practices in a productive engineering environment.
Achieved 100% API test coverage throughout training — setting a quality-first foundation.
Kickstarted career mastering JavaScript, TypeScript, Node.js, MySQL, and MongoDB.

🛠️ Tech Stack: JavaScript TypeScript Node.js MySQL MongoDB

💡 Engineering Insights from the Trenches

01 · #gRPC Writing 1 as an integer costs 1 byte (8 bits), but as binary it needs just 1 bit — an 8× storage reduction. Exactly why gRPC with Protocol Buffers crushes REST+JSON at scale.

02 · #Security Always use UUIDs as primary keys in SQL to eliminate sequential ID enumeration — one architectural decision that prevents entire classes of IDOR attacks before they reach your app layer.

03 · #DistributedSystems Leaderless Replication achieves strong consistency via quorum-based reads and writes. When R + W > N, you guarantee overlap — no stale data sneaks through.

04 · #Performance Bloom Filters eliminate unnecessary DB calls, trading just 1.13 MB of memory for a 1% false positive rate across 1 million records. Used this in production at Tmrw for 1 Crore users.

05 · #Reliability UUID collisions are practically impossible — generating 1 billion UUIDs per second for 100 years only brings the duplicate probability to 50%. Ship with confidence.

🚀 Personal Projects

📈 Stock Market Automation App

A custom Node.js application built from passion for the markets — automating buy/sell strategies, portfolio management, and real-time alerts.

Metric	Value
CAGR (4 Years)	32%
Lines of Code	23,000+
Weekly Effort	~1 hour
Portfolios Managed	3
Platform	Zerodha

⚙️ Features:

💡 Systematic Buy on Dips Auto-creates GTT/Trigger setups with dynamic dip % per share. Auto-increases quantity after a trigger fires. Maintains configured gap between current & trigger price.

💰 Smart Sell / Target Engine Creates daily sell orders with user-defined or pre-defined % thresholds based on stock price. Handles intraday / STBT scenarios automatically.

📊 Movement Tracker Monitors any stock up to 150 days of history. Sends WhatsApp alerts on target price or % hit. Supports personal notes per stock.

🤖 Full Automation App starts when market opens, sleeps when it closes. Runs completely on autopilot — buy, track, sell via Zerodha integration.

📜 Investment Principles:

“Buy when everyone else is selling and hold until everyone else is buying.” — Warren Buffett
Buy only Nifty 50 / Nifty Next 50 stocks with strong fundamentals and charts.

💻 Tech Stack: MongoDB MySQL Redis Node.js React.js AWS

🔗 Code:

Backend: github.com/anurag-sindhu/market_explore
Frontend: github.com/anurag-sindhu/market_explore_ui

Note: The live codebase is private and will remain so 🔒

📊 GitHub Stats

🌐 Find Me Across the Web

Platform	Link
💼 LinkedIn	linkedin.com/in/-anurag-sindhu
🌐 Personal Website	anurag-sindhu.github.io
💻 GitHub	github.com/anurag-sindhu
⭐ LeetCode	leetcode.com/anurag-sindhu
🦄 Stack Overflow	/users/9768827/anurag-sindhu
✍️ Medium	@anurag-sindhu
👨‍💻 HackerRank	hackerrank.com/anurag_sindhu
🏅 Node.js Certificate	cutshort.io/certificate/6659
🏅 JS Certificate	cutshort.io/certificate/6660

🚀 Let’s Build Something Exceptional!

I’m open to new challenges, consulting, or just a great tech conversation.

Connect on LinkedIn → · Email Me → · Download Resume →