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kallesh gj

kallesh gj

Frontend Developer

Banglore
74
Profile Score

About

Frontend Developer with 5 years of experience specializing in building responsive and scalable web applications using ReactJS. Strong expertise in REST API integration, modern JavaScript frameworks, and performance optimization to deliver reliable, high-quality user experiences. Proven ability to identify edge cases, prevent post-deployment issues, and improve overall application stability and maintainability.

Skills & Expertise (9)

ReactJS Advanced
8.5/10
5
Years Exp
JavaScript Advanced
8.3/10
5
Years Exp
REST API Integration Advanced
7.9/10
5
Years Exp
HTML Advanced
7.6/10
5
Years Exp
CSS Advanced
7.6/10
5
Years Exp
REDUX SCSS jquery Performance Optimization

Work Experience

Project Engineer

247.ai

Sep 2021 - Mar 2022

Designed and developed an App Manager using ReactJS and Java Spring Boot within a microservices architecture to manage client assets and resources. The application includes modules for companies, contacts, networks, and activity history, and supports multiple user roles such as admin and standard users. Built a responsive user interface using ReactJS. Integrated RESTful APIs across multiple application modules. Improved application performance and stability during QA and release phases. Contributed to modernizing the system from Ruby to a scalable and maintainable architecture. Received the Outstanding Contribution in Delivery Time Award for consistently meeting project deadlines and ensuring timely delivery.

Software Engineer

Capgemini

Oct 2020 - Jan 2026

Designed and developed an App Manager using ReactJS and Java Spring Boot within a microservices architecture to manage client assets and resources. The application includes modules for companies, contacts, networks, and activity history, and supports multiple user roles such as admin and standard users. Built a responsive user interface using ReactJS. Integrated RESTful APIs across multiple application modules. Improved application performance and stability during QA and release phases. Contributed to modernizing the system from Ruby to a scalable and maintainable architecture.

Project Engineer

Capgemini

Mar 2023 - Nov 2025

Integrated the PhonePe Payment Gateway to enable secure digital payments, supporting UPI, card, and wallet transactions. Focused on delivering a smooth checkout experience and ensuring real-time transaction updates. Implemented the JavaScript-based PhonePe Checkout SDK. Worked closely with the PhonePe integration team to understand API workflows and technical requirements. Handled backend integration, response validation, and webhook processing. Supported user acceptance testing (UAT), managed access configurations, and ensured a successful production go-live.

Project Engineer

24/7.ai

Mar 2022 - Dec 2022

Designed and developed an App Manager using ReactJS and Java Spring Boot within a microservices architecture to manage client assets and resources. The application includes modules for companies, contacts, networks, and activity history, and supports multiple user roles such as admin and standard users. The system was modernized from Ruby to improve performance, scalability, and maintainability. Developed a responsive frontend using ReactJS. Integrated RESTful APIs across multiple application modules. Identified and fixed issues during QA and release phases, improving overall application performance and stability.

Education

Bachelor of Engineering in Information Science - Siddaganga Institute of Technology

- 2020 · Afghanistan

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Profile Score Breakdown

📷 Photo 10/10
📄 Resume 10/10
💼 Job Title 10/10
✍️ Bio 10/10
🛠️ Skills 14/20
🎓 Education 10/10
⏱️ Experience 5/15
💰 Rate 0/5
🏆 Certs 0/5
Verified 5/5
Total Score 74/100

Profile Overview

Member sinceFeb 2026

Availability Details

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Depends on Offer

Skills (9)

ReactJS JavaScript REST API Integration HTML CSS REDUX SCSS jquery Performance Optimization