I am a software engineer with 18+ years of experience delivering scalable backend architectures and cloud-based solutions. I design high-availability systems, RESTful APIs, and reliable data layers, and I enjoy leading cross-functional teams to ship robust software. I thrive on improving code quality, scalability, and performance while mentoring engineers and promoting collaborative problem solving. I’m passionate about building efficient CI/CD pipelines, DevOps practices, and workflow automation. I’ve migrated services to modern PHP (PHP 8+), leveraged AWS and Docker for cost-effective, reliable deployments, and I’m always exploring AI-assisted tooling to streamline operations and boost productivity.

Rajesh Varatharajan

I am a software engineer with 18+ years of experience delivering scalable backend architectures and cloud-based solutions. I design high-availability systems, RESTful APIs, and reliable data layers, and I enjoy leading cross-functional teams to ship robust software. I thrive on improving code quality, scalability, and performance while mentoring engineers and promoting collaborative problem solving. I’m passionate about building efficient CI/CD pipelines, DevOps practices, and workflow automation. I’ve migrated services to modern PHP (PHP 8+), leveraged AWS and Docker for cost-effective, reliable deployments, and I’m always exploring AI-assisted tooling to streamline operations and boost productivity.

Available to hire

I am a software engineer with 18+ years of experience delivering scalable backend architectures and cloud-based solutions. I design high-availability systems, RESTful APIs, and reliable data layers, and I enjoy leading cross-functional teams to ship robust software. I thrive on improving code quality, scalability, and performance while mentoring engineers and promoting collaborative problem solving.

I’m passionate about building efficient CI/CD pipelines, DevOps practices, and workflow automation. I’ve migrated services to modern PHP (PHP 8+), leveraged AWS and Docker for cost-effective, reliable deployments, and I’m always exploring AI-assisted tooling to streamline operations and boost productivity.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Beginner
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Language

English
Fluent

Work Experience

Software Consultant at SRS CodeCraft AB
January 1, 2025 - Present
Operating a software consulting firm delivering cloud-based backend architecture and development services for Sam Media BV, Amsterdam. Designing and maintaining scalable backend systems and RESTful APIs for high-traffic, distributed environments. Advising on system architecture, performance optimization, and data reliability. Building workflow automation using n8n with AI integrations to streamline operations and improve efficiency.
Lead Software Engineer at Sam Media BV
November 1, 2021 - December 1, 2024
Architected and operated high-performance backend services supporting millions of daily transactions in a distributed system. Refactored and optimized a critical billing module, eliminating overcharge issues and enhancing overall efficiency. Led a distributed DevOps team, mentoring engineers and driving best practices in clean code, testing and CI/CD pipelines. Migrated core services from PHP 7.4 to PHP 8.1, improving system performance, stability and runtime efficiency.
Senior Software Engineer at Sam Media BV
September 1, 2018 - October 1, 2021
Designed and implemented real-time data ingestion pipelines, streaming millions of transaction events into Amazon Redshift for more insightful analytics and reporting. Optimized cost reports for weekly revenue reporting with high accuracy. Contributed to tech alignment sessions, emphasizing Clean Code and Refactoring techniques to enhance team proficiency and code quality.
Senior Software Engineer at Sam Media
January 1, 2013 - September 30, 2018
Designed and implemented a modern RESTful API microservice-based backend system replacing a legacy monolithic application. Built a scalable, event-driven delivery notification system using RabbitMQ, increasing throughput and reducing latency under high-traffic conditions. Implemented AWS IAM, cross-account access, and role-based security, optimizing cloud infrastructure costs by 30% to 40%.
Senior Software Engineer at Hanodale Technologies
July 1, 2011 - January 31, 2013
Created a dynamic platform enabling seamless mobile content billing platforms using Java-based services. Worked for client Actix Sdn Bhd and was involved in system analysis and developed various case reports for KDDI project.
System Analyst at Multimedia University
August 1, 2008 - June 30, 2011
Developed campus management system for client. Customized open source Ajax Chat for MultiMedia Learning System (MMLS).
Software Engineer at KGiSL
August 1, 2006 - August 1, 2008
Built and customized open source One or Zero Helpdesk to create a Helpdesk application. Worked at KG Hospital, developing and maintaining their hospital applications like Billing and Front Office.

Education

BE, Computer Science at Bannari Amman Institute Of Technology, Sathyamangalam (Anna University, Chennai), India
January 1, 2001 - January 1, 2005

Qualifications

Android Kotlin Developer Nanodegree
January 11, 2030 - January 31, 2026
MongoDB for Developers
January 11, 2030 - January 31, 2026
Learning How to Learn
January 11, 2030 - January 31, 2026

Industry Experience

Software & Internet, Media & Entertainment, Professional Services