Headline

Software Engineer at Flipkart

About

A software engineer with 10+ years of experience building, scaling, and optimizing high-traffic systems and customer-facing products, primarily in the e-commerce domain. I enjoy solving complex engineering problems where scalability, reliability, performance, and simplicity matter. Over the years, I’ve worked on distributed systems and high-throughput platforms operating at million-requests-per-second scale, while driving architectural decisions, system design, performance optimization, and reliable production delivery. I enjoy digging into customer and business problems, translating them into scalable technical solutions, and continuously improving systems as they grow. I’m particularly interested in distributed systems, scalability, software design, architecture, resilience, and building engineering solutions that create measurable business impact. Technologies: Java, Python, SQL, REST APIs, Microservices, System Design, gRPC, Kafka, RabbitMQ, Redis, AWS, Kubernetes, CI/CD, and Distributed Systems.

Location

Bengaluru

AI stack

anthropic apis

claude code

claude

codex

cursor

Work experience

Software Engineer at Flipkart, Jun 2021 - Present · 5 yrs 4 mos, Bengaluru, Karnataka, India

Software Developer at Delhivery, Mar 2019 - Jun 2021 · 2 yrs 4 mos, Gurugram, Haryana, India, -Re-Architected the existing address fix engine(which is trained using existing verified addresses. After the training, prediction algorithm is used in finding correct City, Locality and Pin-code for given input address). : Redesigned the queuing system from Disque to RabbitMQ with python celery to improve the performance, better monitoring, to increase the reliability and scalability. - Significantly reduced the model training time by 65% by implementing in-memory cache, leading to a reduction in time from 10 hrs to 3.5 hrs. - Wrote an automate training script to reduce the manual effort of running training and changing config every time. Technologies used: AWS (API Gateway, Lambda, S3, DynamoDB, Aurora, EC2, ElastiCache), Python, Flask, RabbitMQ, Postgres, Redis

Software Engineer at Zopper.com, Aug 2018 - Feb 2019 · 7 mos, Noida, Was one of the earliest members of Home Assure Team in Zopper contributed to various applications/services:- Customer App: - Owned and built the first version of the customer app from scratch. - Designed the database. - Created the APIs for customer registration, purchasing the warranty, claiming the warranty, and claim history. Also, integrated the CRM and payment API. Home Assure Service: - Worked on ’Zopper Home Assure’, an E-warranty program that gives the extensive e-warranty to electronic items. - Responsible for backend development, Rest APIS and involved in data model designing. - Collaborated with team to design the application from scratch. - Designed and implemented the user-role and privilege on API level. Foundation Service: - Worked with the team to resolve the challenging problem/issue by creating a base project for all using the Django Rest Framework. - Contains the login and access control for all kind of applications and dashboards. - Created a customized Django middleware for authentication. - Designed the database and created the APIs from CRUD operation for the user, and catalogs for different projects. - Wrote the unit test cases and worked on systematic testing. Other Challenges: - Worked on API migration from the existing system to the new system without affecting real-time operations. New systems are rich in functionality with better performance. - Built the common system for image uploading/updating/downloading using the AWS S3 bucket, using in all dashboards and applications.

Software Development Engineer at Mindfire Solutions, Jun 2016 - Jun 2018 · 2 yrs 1 mo, Noida, - Involved in end to end implementation of business logic, build services, database design, stored procedure etc. - Worked on USA-based client projects(cloud-based SaaS application, POS management system) with real-time problems. - Developed Master Data(utility) module which consists of common data that is used throughout the application. - Worked on admin set-ups of POS system, like a store management system, user management system. - Engineering web development, all layers, from the database to services to user interfaces. - Modified existing software to fix bugs, upgrade interfaces and improve performance. - Working with Agile/Scrum methodology.

Organizing Member at Origo Students Association, Feb 2015 - May 2016 · 1 yr 4 mos, Noida, Uttar Pradesh, India

Education

Bachelor’s Degree(Hons.), Computer Science, JSS Academy of Technical Education, Noida

Public links

github: https://github.com/harshgangwar

leetcode: https://leetcode.com/infernape