Aritro Roy

Product Manager

United States3 yrs 8 mos experience

Key Highlights

Built scalable systems impacting millions of users.
Expert in backend development and microservices architecture.
Passionate mentor with proven teaching effectiveness.

Stackforce AI infers this person is a Backend Engineer specializing in scalable systems and microservices within the SaaS and Web3 industries.

Contact

aritroroy1999@gmail.com LinkedIn

Skills

Core Skills

Backend DevelopmentMicroservicesWeb3

Other Skills

API DevelopmentAWS LambdaAlgorithmsAmazon Web Services (AWS)Apache KafkaArtificial Neural NetworksBack-End Web DevelopmentC++Data StructuresDatabasesDebuggingDeep LearningEngineeringExpress.jsGitHub

About

I’m a backend engineer who loves solving problems at scale. At my current company, I built a referral system that supports 100-level chains and handles over 10,000 events per minute. It’s rewarding to know that my work directly impacts millions of users. Before this, I was at Intract, where I built high-throughput services used by over 1 million people every day. One of my favorite projects was an async verification system that had to stay fast and reliable—even under peak loads. I started my journey at BYJU’S, where I worked on systems supporting 10,000+ tutors and over a million classrooms. This taught me how to build with both scale and user needs in mind. I also enjoy mentoring. At Scaler, I’ve taught advanced data structures and algorithms to hundreds of students. Helping others grow keeps me grounded and inspired. Outside of work, I explore new technologies and contribute to projects that promote learning in underserved communities. I believe tech should be accessible to everyone. Let’s connect if you’re into backend systems, scalability, or just want to talk tech! Here is my email: aritroroy1999@gmail.com Skills: Node.js · Java · Spring Boot · TypeScript · MongoDB · Distributed Systems · Cloud Infrastructure · Web3

Experience

Nyu tandon school of engineering

Graduate Teaching Assistant

Sep 2025 – Present · 6 mos · New York, United States · On-site

Assisted in teaching CS UY 3224 – Introduction to Operating Systems to undergraduate students.
Held office hours to provide guidance on processes, memory management, synchronization, scheduling, and file systems.

Scaler

Subject Matter Expert – Data Structures & Algorithms | Technical Mentoring, Advanced DSA Instruction

Dec 2024 – Jun 2025 · 6 mos · Bengaluru, Karnataka, India · Remote

Taught advanced DSA problem-solving through live 2.5–3 hour sessions, covering topics like Graphs, Binary Search, and Dynamic Programming for batches of experienced software developers. Focused on helping students master problem-solving patterns: guiding them through problem statements, offering progressive hints, and explaining optimized solutions in real time. Personally mentored students preparing for top-tier tech interviews, offering tailored strategies, feedback, and confidence-building support. Received 4.5+ average ratings from hundreds of students across two cohorts, reflecting strong engagement and teaching effectiveness. Collaborated with the content and pedagogy team to ensure conceptual clarity and academic depth in sessions and materials.

Stealth

Backend Software Engineer | TypeScript, Node.js & Microservices Development

Jul 2024 – Aug 2025 · 1 yr 1 mo · Gurugram, Haryana, India · On-site

Backend Engineer | TypeScript | NodeJS | MongoDB
Built a scalable, production-grade referral system supporting 100-level chains and millions of users, processing 10,000+ events per minute using Kafka, Redis, MongoDB, and Node.js.
Developed versioned reward logic in MongoDB enabling zero-downtime configuration changes and A/B testing. Integrated a modular wallet system with atomic, idempotent transactions under 150ms latency. Optimized performance with precomputed referral trees, Redis caching, and database indexing to enable real-time reward distribution and rollbacks. Led end-to-end development of a geospatial job discovery engine, delivering personalized, behavior-based job recommendations to 1M+ users under 200ms latency. Reduced image delivery costs by $1,000+/month and improved page speed by implementing AWS Lambda@Edge, CloudFront, and deep caching strategies. Built a scalable internationalization (i18n) service supporting recursive key discovery across nested JSON and sub-ms Redis lookups for 7+ languages. Designed a robust, event-driven infrastructure using BullMQ and Piscina. Enabled request context propagation, dynamic listener registration, exponential retries with DLQ, and graceful shutdown across 4+ microservices.

TypeScriptNode.jsMongoDBKafkaRedisBackend Development+1

Intract

Backend Engineer | TypeScript, Solidity, Web3, Node.js, MongoDB, Cloud Infrastructure

Oct 2023 – Jul 2024 · 9 mos · Gurugram, Haryana, India · On-site

Backend Engineer | TypeScript | NodeJS | MongoDB
At Intract, I engineered scalable backend solutions including a high-throughput async verification service supporting 1M+ DAU with 99.9% uptime, developed on-chain reward detection across multiple L2 blockchains (BASE, Scroll, zkSync, BNB) for real-time market insights, and led the NFT discovery platform with ML-based recommendations driving 30% user engagement growth. I designed multi-chain gamification systems boosting user retention by 40%, architected a robust notification system processing millions daily with 99.99% delivery accuracy, and built Intract Academy (10K+ DAU) with advanced anti-abuse mechanisms for gasless NFT minting. Additionally, I created a personalized Quest-to-Quest recommendation engine improving retention by 65%.
Tech stack: Node.js, Express, MongoDB, Redis, AWS Lambda, Docker, and Kubernetes.

TypeScriptNode.jsMongoDBRedisAWS LambdaBackend Development+1

Byju's

Backend Software Engineer | Java, Spring Boot, Microservices Development

Jun 2022 – Oct 2023 · 1 yr 4 mos · Bengaluru, Karnataka, India · Remote

Backend Engineer | Java | SpringBoot | MySQL | MongoDB
At BYJU’S, I worked as a backend engineer in the Teacher Tech Horizontal Team, where I led the development of scalable systems supporting 10K+ tutors and 1M+ classrooms. I automated manual tutor allocation workflows by designing real-time eligibility and availability microservices, reducing operational effort by 90%. I also architected an event-driven Orchestrator Service to coordinate Availability, Batching, and Scheduling modules, significantly improving system reliability. Additionally, I managed the seamless migration of over 5M historical records using robust validation and zero-downtime techniques. My optimizations reduced API latency by 300–400ms through strategic caching and database tuning, and I deployed real-time observability using the ELK stack.
Tech Stack: Java Spring Boot, Node.js, MySQL, Redis, AWS SQS, S3

JavaSpring BootMySQLMongoDBBackend DevelopmentMicroservices