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Aanchal Singh

@aanchalsingh4

Message

I build scalable backend platforms powering payments, investments, and advertising.

India

Message

At Flipkart Super.Money, I designed, built, and owned the core backend for SuperCheckout with Juspay’s Breeze, launching it from scratch in three months and scaling it to 10,000+ merchants handling 25k+ daily orders.

I also architected a FIFO-based Billing Engine that automates invoicing for monthly billings of 60+L, and worked on fraud, community, and anomaly detection using device binding, user IPs, and user IDs.

Previously at Angel One, I developed the Family Portfolio service for 1M+ active users and built an AWS Glue job to process closing prices for accurate portfolio LTPs. At ShareChat, I built real-time ads analytics processing 500M+ ad events per day and re-architected the campaign service to reduce API response time from two seconds to 300ms.

I work across Java, Go, Node.js, Python, cloud infrastructure, data systems, and microservices, and I enjoy mentoring engineers on delivery, design, and codebase practices.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer-2

Current

Flipkart Super.Money

Apr 2025 - Present (1 year 4 months)

Designed, built, and owned the core backend for the SuperCheckout product in collaboration with Juspay's Breeze, launching from scratch in 3 months and scaling to 10,000+ merchants, handling 25k+ daily orders and driving monthly GMV of 80+ Cr. Architected Billing Engine utilizing FIFO-based knock-off logic to compute monthly merchant commissions, automating the entire invoicing lifecycle for billi

Java Spring Boot Python MySQL GCP ArgoCD BigQuery Kubernetes Microservices System Design

Software Engineer-2

Angel One

Feb 2024 - Apr 2025 (1 year 2 months)

Developed the Family Portfolio service for 1M+ active users to track and manage their family's entire investment portfolio in one place with a comprehensive view. Designed and implemented an AWS Glue job to fetch and process closing prices from the new Bhavcopy structure, ensuring accurate Last Traded Price (LTP) display in the app's portfolio section.

Go Python PySpark MySQL MSSQL AWS Performance Testing System Design

Software Engineer

ShareChat

Aug 2021 - Feb 2024 (2 years 6 months)

Built and maintained a real-time ads analytics dashboard for clients, processing and aggregating 500M+ ad events/day for campaign insights. Optimized the CPCV & instream ads engine—contributing 30% of total ad network revenue (~4.5 Cr/month)—by restructuring waterfall priorities, retries, and deploying dynamic bidding variants.

Java MongoDB Pub Sub GCS Spanner BigTable BigQuery System Design Performance Optimization

Software Development Intern

ShareChat

Aug 2020 - Jul 2021 (11 months)

Developed and maintained features of the ShareChat Ads Manager platform to enable SMB advertisers to create and deliver ads on ShareChat/Moj, scaling to 8,000+ active advertisers running 25,000+ active ads. Created ad formats including native, interstitial, and instream ads to improve overall CTR and platform monetization.

MongoDB GCP Testing API Documentation