Full stack developer with 4.5+ years of professional experience in
e-commerce, finance and banking domain with agile development environment.
Currently, I am working with NextJS(ReactJS), Spring Boot(Java) to build full-stack applications.
I am Sumit Kumar Singh
• Graduated in 2018 from MIT Muzaffarpur with Bachelor of Technology in Information Technology.
• I have worked on various projects as a Full Stack Developer with a bandwidth of 70% in backend and 30% in front-end development.
• My portfolio boasts an extensive expertise in data structures and algorithms, system design, object-oriented programming, functional programming, RESTful APIs, problem-solving prowess, proficient programming skills, exceptional team player abilities, effective leadership qualities, and comprehensive software development proficiency.
My Preferred Tools and Technologies are 👇
Java, Spring-Boot, Spring Data-JPA, Spring-Rest
Angular 8, ReactJS, NodeJS, NextJS 13.4
Mongo DB, SQL, PostgreSQL, SQL Server
DS & Algo, Microservices, System Design
Kafka, Redis, Jenkins, Docker, Graphana, Git
AWS (EC2 instance & S3 bucket, Amplify)
Employment History
Intermediate Java Developer
- Working on migration from Tibco to Flowable (Both are BPM tools).
- Designed and Developed a batch job application which consumes data from Kafka and based on the Kafka event data, fetching or downloading file from AWS and updating the corresponding table entities.
Software Development Engineer
- Redis implementation for authz API which has reduced the rps by 1/3.
- Designed LLD for migration of authz v2-v3 and flow tagging for picking infra.
- DNS onboarding of Databases and Data-Stores.
- Took leadership in handling customer issues and production deployments.
- Worked on BBD(Big Billion Day) Readiness for several apps, Databases and data-stores.
- Created UI for GTL(Goods Transfer List) and IWIT(Inter Warehouse Inventory Transfer) flow, which has helped warehouse ops in smooth execution.
- Took ownership of the Alertz migration project, which aimed to migrate all alerts of the Flipkart warehouse infrastructure.
- Developed and took ownership of the Single Page Dashboard, which aimed to ensure the hygiene of all warehouse applications.
- Worked on E2E testing of the Grocery F-Quick infrastructure.
- Was POC for the zookeeper infrastructure.
Software Developer
- Designed and developed the website and traceability page for the end users where end users can scan the packet and get all the relevant data related to the particular product.
- Developed invoice management system which is responsible for the calculating the gross amount, net amount, discount, price etc, generating multi-sku invoice and managing the cash collected by the vendor.
- Worked on Supply-Chain Management where we have the facility to find the capicity of each of the vendor and create order accordingly, upsale and downsale.
- Designed and developed the notification engine where we have to control to send the notification to the end users for different events like order creation, order packed, invoice creation, order delivered etc.
- Developed Return Management System from scratch.
Member Technical Staff
- Designed module with MVC design pattern including resource, service, service implementation, DAO layer, database configuration, utility common classes and exception handler.
- Worked on migration of the legacy system to java Angular based Application using Sprint boot, MySQL and Angular-8.
- Trained end users to use new or modified application and presented new product features to the client.
- Worked on development of resource management application which is used for utilizing the resource efficiently.
Some of the things I have built
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