Open to opportunities

Ankit Singh

@ankitsingh30

Message

I build high-scale backend payment and data platforms that reduce costs and improve performance.

India

Message

What I'm looking for

I'm looking to own high-scale backend systems where I can build reliable payment, data, and distributed platforms from design through production.

I've built backend systems for BigBasket, Chingari, Setu, and Juspay, spanning fintech payments, analytics, invoice workflows, and account aggregation.

At BigBasket, I led the migration of 3.5B+ audit-log records from MySQL RDS to ClickHouse, cutting infrastructure costs by $117K annually and enabling sub-second reporting. I also built finance-dashboard and wallet-migration backends with validation and consistency checks.

At Chingari, I led UPI backend development for 76K+ monthly transactions, saving INR 25L per month in payment gateway fees. I've also automated payouts and refunds, built transaction-support tooling, and delivered bank-verification and monitoring modules.

Across Java, Spring Boot, Node.js, Python, AWS, and distributed data systems, I take backend services from design through production. I also led a six-member team to second rank at the Smart India Hackathon for a Python/Django railway route recommendation system.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer (Backend)

Current

BigBasket

Apr 2025 - Present (1 year 4 months)

Designed and led migration of 3.5B+ audit log records from MySQL to ClickHouse, reducing infrastructure costs by $117K annually. Built scalable data ingestion pipeline and developed backend for Finance Dashboard processing 10K+ invoices daily.

Java Spring Boot Python Clickhouse MySQL AWS DMS S3 Docker Data Migration Distributed Systems Performance Optimization

Software Development Engineer 2 (Backend)

Chingari

Jun 2024 - Apr 2025 (10 months)

Led backend development of UPI processing 76K+ transactions/month and saving INR 25L/month in payment gateway fees. Automated payout and refund workflows and developed Help Desk module handling 500+ tickets/month.

NestJS MongoDB PostgreSQL Redis AWS Payment Systems Automation

Backend Engineer

Setu

Aug 2023 - Jan 2024 (5 months)

Designed and developed RESTful APIs for Account Aggregator platform serving 15K+ users. Implemented Marker Checker system and managed GitLab CI/CD pipelines.

Python fastAPI PostgreSQL Gitlab CI REST APIs

Software Development Engineer

Juspay

Mar 2022 - Jul 2023 (1 year 4 months)

Created RESTful Rule Engine service processing 5K+ loan eligibility checks monthly. Optimized logging using AST reducing rule parsing time by 50% and integrated Bambora payment processor.

Java Spring Boot REST APIs MySQL Redis

System Engineer

Infosys

Nov 2020 - Mar 2022 (1 year 4 months)

Managed all phases of Data Warehouse lifecycle from requirements gathering to implementation and support. Created Data Marts using SQL Scripts in MS SQL Server.

SQL MS SQL Server Data Warehouse Data Marts