Vijay Kumar

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ABOUT ME

Senior Software Engineer with 4+ years of experience

Mostly amused by the Internet, terminal (CLI), travel, and socially awkward people. I enjoy reading about productivity hacks, investing, and coffee. I’m a backend engineer at KeepTruckin Inc. and I write code & scale systems for a living.

Previously, I was with Razorpay and was responsible for building API-First Fintech solutions for the Capital platform in Golang using Domain-driven methodologies.

Before Razorpay, I worked as a back-end engineer at Treebo Hotels where I revamped the Central Reservation System and was responsible for the hot migration of hotels (booking data) from the legacy to the new micro-services architecture. And prior to Treebo, I was leading the tech team at Omnify, Inc. and was primarily working on scaling and architecting both frontend & backend systems.

I also have experience in freelancing, which I did during my college days to help support myself. During those days, I got a lot of opportunities to work on various technologies that helped me better understand today's web development and its evolution.

Mumbai (+05:30)

Joined February 2021

EXPERTISE

3 years experience

I have built more than 10 microservices using Golang at Razorpay. I was primarily responsible for building products like Loans, Credit Ca...

I have built more than 10 microservices using Golang at Razorpay. I was primarily responsible for building products like Loans, Credit Card Management services, and Collections systems for Razorpay. Currently, at KeepTruckin, I'm working on building fleet & fuel management services in Golang to scale the plethora of requests.

Python

3 years experience

Python is my go-to language for any automation-related tasks. During my initial days as a Computer Science graduate, I used Python as my ...

Python is my go-to language for any automation-related tasks. During my initial days as a Computer Science graduate, I used Python as my primary language to program. Having said that, I have 2 years of professional work experience at Treebo Hotels and build microservices using Flask and a monolith application in Django.

Flask Django

Web Development

4 years experience

In my last 4 years of real-world work experience, I've worked for multiple companies which use various technologies and have helped them ...

In my last 4 years of real-world work experience, I've worked for multiple companies which use various technologies and have helped them scale their products. Having my experience in product-based companies helped me acquire skills in depth. During these years I've mastered various languages and frameworks while understanding how to debug or learn anything quickly and shipping things to production.

RESTful API AWS Laravel

RESTful API AWS Laravel Ruby on Rails Integration Testing Unit Testing jQuery Flask DjangoMysql, postgresql

WordPress

1 year experience

Customized WordPress CMS to transform into directory listing website and maintained multiple websites which ran using WordPress during my...

Customized WordPress CMS to transform into directory listing website and maintained multiple websites which ran using WordPress during my early freelancer days. Built a WordPress plugin for Omnify Inc. to add widgets into any WordPress site using PHP. (https://wordpress.org/plugins/omnify-widget/)

PHP

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE

GitHub

simturn

CNC Lathe Simulation using pure JavaScript

JavaScript

.vim

My vim configuration files

Vim script

Stack Overflow

674 Reputation

EMPLOYMENTS

Backend Engineer

KeepTruckin

2021-01-01-Present

Building fuel services for showing insights on the fleet management dashboard. Effectively working on projects related to IFTA to help th...

Building fuel services for showing insights on the fleet management dashboard. Effectively working on projects related to IFTA to help the company become an industry-standard solution.

Ruby

Ruby on Rails

PostgreSQL

Ruby

Ruby on Rails

PostgreSQL

Senior Software Engineer

Razorpay

2019-08-01-2020-12-01

● Commercial Cards: Developed a platform for credit cards, with gRPC interfaced microservice, and grpc-gateway plugin (to Protobuf compi...

● Commercial Cards: Developed a platform for credit cards, with gRPC interfaced microservice, and grpc-gateway plugin (to Protobuf compiler) to expose REST endpoints, built using Domain-driven Design (DDD) methodologies. ● Loan Origination System: Architected the system responsible for accepting & processing loan applications using the Twirp framework with Protocol Buffer definitions in Golang facilitating a credit platform for Razorpay merchants. ● Offline Verification Service: A platform service integrated with external vendors, built using Gin framework (Go) with event-driven architecture, enabling verification of Razorpay merchants’ documents applying for credit.

MySQL

Domain-Driven Design

Kubernetes

MySQL

Domain-Driven Design

Kubernetes

gRPC

Protocol buffers (protobuf)

Software Engineer

Treebo Hotels

2018-04-01-2019-07-01

● Reporting Infra: Created auto-scalable infrastructure for business and finance needs by routing the requests through a message broker ...

● Reporting Infra: Created auto-scalable infrastructure for business and finance needs by routing the requests through a message broker for critical data crunching & reports generation on AWS spot EC2 instances. ● Hot Migration: Developed a Python script to move the booking data of active hotels on the legacy system to the new revamped booking microservice, in a single shot with zero business impact and less than 0.1% failures. ● Stabilizing Legacy System: Single-handedly maintained a legacy booking engine built using the Django framework, improving success rates & reducing the API response time of the daily night audits by 80%.

Python

Django

Flask

Python

Django

Flask

PostgreSQL

PROJECTS

Turning Center SimulationView Project

2016

Awarded best project for developing a web-based CNC Lathe Machine Simulator using WebGL and Javascript.

WebGL

JavaScript

WebGL

JavaScript

TeblrView Project

2016

Tumblr on the command line for Terminal and Linux lovers written in Python. It helps in posting text, photo, quote, link, audio, or vide...

Tumblr on the command line for Terminal and Linux lovers written in Python. It helps in posting text, photo, quote, link, audio, or video with just a single command from your terminal. Also, edit and delete posts on the tips.

Python