Headline

Lead Software Engineer at Chargebee

About

💡 Software Engineer | 8+ Years 🚀 Experience in designing and optimizing scalable, high-performance systems. Passionate about solving complex technical challenges, reducing latency, improving system reliability, and optimizing cloud infrastructure. 💻 Skilled in: Java, Spring Boot, PostgreSQL, AWS, System Design, and Event-Driven Architectures (Kafka, SQS). 🔹 Proven track record in enhancing system performance, building distributed systems, and leveraging cloud-native solutions to drive business growth. 🔹 Strong advocate for scalability, fault tolerance, and efficient system design. 🔹 Always eager to learn, adapt, and push the boundaries of backend engineering. 🎯 Continuous Learner | Problem Solver | System Design Enthusiast I’m always eager to collaborate, innovate, and push the boundaries of backend engineering. 📌 Let’s connect and discuss Scalable Architectures, Distributed Systems, and Cloud-Native solutions! 🚀

Location

Chennai

AI stack

claude

codex

cursor

hugging face

lovable

notion

Work experience

Lead Software Engineer at Chargebee, Aug 2025 - Present · 1 yr 1 mo, Chennai, Tamil Nadu, India

Senior Software Engineer at Rocketlane, Jan 2021 - Aug 2025 · 4 yrs 8 mos, Chennai, Tamil Nadu, India, 🚀 Key Achievements at Rocketlane: ✅ Implemented Database Sharding, improving scalability and boosting query performance by 50%. ✅ Optimized API handling with Nginx, reducing deployment time by 80%. ✅ Reduced core API latency to under 500ms, enhancing system responsiveness and ensuring 99.9% SLO adherence. ✅ Increased Customer Satisfaction (CSAT) by 90% through performance tuning and system optimizations. ✅ Designed and implemented time tracking & resource management, improving operational efficiency. ✅ Built Rocketlane's Staging environment from scratch on AWS, streamlining deployments. ✅ Mentoring juniors in backend development, code quality and best practices. 💻 Tech Stack: Java, Spring Boot | Infrastructure: AWS | Monitoring: Datadog

Technical Analyst at Citi, Jul 2017 - Dec 2020 · 3 yrs 6 mos, Chennai Area, India, 🚀 Key Projects & Contributions: ✅ Developed a Reconciliation Service to ensure data consistency between two systems (Java). ✅ Built a Trading Dashboard to display market insights and statistics (Angular 4). ✅ Engineered an Automated Checkout Service, reducing post-deployment manual effort (Java 8, Spring Boot, Angular 4). ✅ Contributed to FXClick 3.0, a platform displaying positions alongside trade details (Java 8, Angular 4). 💻 Tech Stack: Java, Spring Boot, Angular 4

Internship at Fifth Generation Technologies India (P) Ltd, May 2016 - Jun 2016 · 2 mos, Chennai, ✅ Developed Android applications using Native Android (Java, Kotlin) and Hybrid frameworks (Ionic, AngularJS) for cross-platform compatibility. 💻 Tech Stack: Java, Ionic, AngularJS

Education

Bachelor of Engineering (BEng), Computer Science and Engineering, College of Engineering, Guindy

12th standard, Maths, Physics, Chemistry, Computer Science, D.A.V higher secondary school

Public links

github: https://github.com/karthick03

leetcode: https://leetcode.com/karthick03