Jalaj Kumar Gaur

Full Stack Software Engineer | Performance Optimization & Security Specialist

LinkedIn | Email | Phone

[email protected]

8449311977

Bengaluru, IN

About

Highly accomplished Full Stack Software Engineer with over 3 years of experience specializing in React.js, Next.js, and React Native development, driving significant performance enhancements and robust security implementations. Proven leader in optimizing application speed, scalability, and user experience, as evidenced by a 40% improvement in load speeds and a 60% reduction in security vulnerabilities. Seeking to leverage expertise in scalable architecture and performance optimization to deliver high-impact solutions in a dynamic technology environment.

Work Experience

Software Engineer

Games24x7

Mar 2025 - Present

Bengaluru, KA, IN

Currently enhancing India's largest Rummy gaming platform, RummyCircle, by driving performance enhancements and optimizing critical app performance metrics.

  • Driving performance enhancements and optimizing critical app performance metrics for RummyCircle, ensuring improved speed, stability, and a seamless user experience.
  • Actively contributing to the continuous improvement of key performance metrics, focusing on efficient WebView handling and overall platform optimization.

Senior Member Of Technical Staff

Ziroh Labs

Feb 2024 - Mar 2025

Bengaluru, KA, IN

Led frontend and mobile app development for React.js, Next.js, and React Native platforms, ensuring high standards for scalability, performance, and security.

  • Optimized frontend and mobile performance through strategic code-splitting, lazy loading, and efficient rendering, resulting in a 40% improvement in application load speeds.
  • Conducted over 100 extensive code reviews, significantly enhancing code maintainability and enforcing robust best practices across development teams.
  • Implemented advanced Lighthouse optimizations, elevating website performance scores from 70 to over 95+, thereby boosting user experience and search engine optimization.
  • Executed 50+ rigorous code reviews, reducing bugs by 45% and ensuring strict adherence to best coding practices, significantly enhancing software quality.
  • Streamlined cross-functional collaboration with product and backend teams, accelerating development cycles by 20% and optimizing overall application architecture.

Member Technical Staff

Ziroh Labs

Mar 2022 - Jan 2024

Bengaluru, KA, IN

Designed and developed reusable UI components and integrated RESTful APIs, focusing on enhancing development efficiency and security.

  • Engineered and deployed over 30 reusable UI components and frontend libraries, significantly streamlining development workflows across multiple projects.
  • Integrated RESTful APIs with frontend applications, boosting data-fetching efficiency and reducing unnecessary network calls by 40%.
  • Architected and implemented a robust Relay Server, providing a critical security layer for Chrome extensions.
  • Developed a universal cryptographic library for all JavaScript/TypeScript projects, standardizing encryption practices and reducing security vulnerabilities by 60%.
  • Optimized UI workflows, reducing user action steps by 25% and decreasing load times by 35%, significantly enhancing overall user experience.
  • Successfully migrated state management from Context API to Redux Toolkit, resulting in a 60% reduction in state-related bugs.

Education

Computer Science

Rajiv Gandhi Technical University

8.43

Aug 2018 - Jun 2022

Bhopal, Madhya Pradesh, IN

Projects

Mailing Platform

Developed a privacy-focused email platform with zero-knowledge encrypted storage and delivery using React and Next.js.

Zunu Message

Developed and maintained a secure messaging app with default SMS integration, supporting internet-based chats, stories, groups, and updates using React.js and React Native.

kompact.ai

Developed an AI model management mobile app with real-time analytics, authentication, and execution of AI models using React.js and React Native.

Skills

Frontend Technologies

  • JavaScript
  • TypeScript
  • React.js
  • Next.js
  • React Native
  • Electron.js
  • HTML5
  • CSS3
  • Redux Toolkit
  • Zustand
  • Context API
  • Micro Frontend
  • Web Workers

Backend Technologies

  • REST
  • Node.js
  • Express.js
  • MongoDB
  • RESTful APIs

Testing

  • Jest (unit testing)

Development Tools

  • VS Code
  • Android Studio
  • Xcode
  • Postman
  • Git
  • GitHub
  • CICD
  • Github Actions

Methodologies & Practices

  • Agile
  • Code Reviews
  • Performance Optimization
  • Scalable Architecture