Hi, I'm Raj Kumar

Senior Backend Engineer specializing in Ruby on Rails, AWS, and scalable distributed systems

Get In Touch View GitHub

10+

Years Experience

50+

Projects Delivered

10+

Team Members Led

Professional Journey

Team Lead - Backend

Thinkbiz Technology Pvt. Ltd.

Jul 2022 - Oct 2025 | Ahmedabad, India

Led backend team of 10+ engineers delivering large-scale SaaS applications
Built high-performance Rails 7 RESTful APIs with PostgreSQL and microservices
Improved system scalability and response time by 30% via query optimization
Migrated legacy services to AWS ECS, reducing deployment time from 30 mins to 4 mins
Implemented centralized logging with CloudWatch improving incident detection

Senior Software Developer

I-Serve Systems Pvt. Ltd.

May 2018 - Jul 2022 | Gandhinagar, India

Delivered 10+ production-grade Rails applications for Kanji Group (Australia)
Developed secure, scalable REST APIs using Ruby, Python, and PostgreSQL
Managed AWS infrastructure: ECS, Lambda, S3, DynamoDB, RDS
Dockerized Rails services and implemented CI/CD pipelines
Achieved 25-30% performance improvement through code refactoring

Software Developer

PlumSlice Labs

Jan 2017 - Apr 2018 | Ahmedabad, India

Developed Product Information Management (PIM) and Digital Asset Management (DAM) modules
Improved metadata model architecture supporting large product catalogs
Collaborated with product teams for Agile sprint deliveries

Junior Software Developer

HeaderLabs InfoTech Pvt. Ltd.

Jan 2015 - Jun 2016 | Gurugram, India

Built features for WorkingGroupLink financial contact management SaaS
Improved API response and frontend UX using jQuery and AJAX

Let's Connect

📧

Email

2017kamb@gmail.com

📱

Phone

+91 8802538108

📍

Location

Ahmedabad, Gujarat, India

💼

linkedin.com/in/2017kamb

Hi, I'm Raj Kumar

Senior Backend Engineer

Technical Expertise

Backend & Languages

Cloud & DevOps

Databases

Tools & Practices