Rajesh Kumar
@rajeshkumar24
Senior Frontend Engineer building React and Next.js applications, including Nattyhatty’s product with 40% faster page loads.
IndiaWhat I'm looking for
At Nattyhatty, I built a customer-facing product with React and Next.js, improving performance by 30% and cutting page load times by 40%. I also introduced RTK Query caching that reduced redundant API calls by 28% and shipped a reusable UI component library.
As a Senior Frontend Engineer working freelance, I deliver web applications for Indian and international clients, owning work from requirements through deployment and handover. Earlier, I developed React and Node.js applications at Ekansha Technologies and built responsive React dashboards at TodoAdvisors.
Experience
Work history, roles, and key accomplishments
Senior Frontend Engineer
Freelance / Self-Employed
Jul 2025 - Present (1 year 2 months)
Delivered full-cycle web applications for Indian and international clients using React, TypeScript, Next.js, and Node.js, maintaining a 100% on-time delivery rate. Improved Lighthouse performance scores, SEO, and Core Web Vitals across client projects.
Frontend Developer
Nattyhatty
Dec 2021 - Jul 2025 (3 years 7 months)
Built a large-scale, high-traffic customer-facing product, improving application performance by 30% and cutting page load times by 40% through Next.js SSR/ISR, lazy loading, and code splitting. Engineered scalable SPAs using React 18, TypeScript, Next.js 14, Redux Toolkit, and RTK Query, and led a team of 5 engineers.
Freelance Web Developer
Freelance / Self-Employed
Jul 2021 - Dec 2021 (5 months)
Delivered 3+ custom web applications for international clients using React, TypeScript, Next.js, and REST APIs, achieving a 100% on-time delivery rate with zero post-launch critical bugs. Owned the complete feature lifecycle independently across concurrent client engagements.
Full Stack Developer
Ekansha Technologies
Jan 2021 - Jun 2021 (5 months)
Developed full-stack web applications with React, Node.js, Express.js, and MySQL, ensuring seamless client-server data flow via RESTful API integration. Improved browser performance of enterprise applications and implemented unit and integration testing with Jest and Cypress.
Frontend Developer
TodoAdvisors
Apr 2019 - Nov 2020 (1 year 7 months)
Built responsive, component-driven React dashboards and customer-facing web applications with reusable architecture and RESTful API integrations. Enhanced SEO, accessibility (WCAG), and Core Web Vitals, and refactored legacy JavaScript codebase to improve performance.
Education
Degrees, certifications, and relevant coursework
Monad University
Bachelor's Degree, Computer Science
2019 - 2022
Pursued a Bachelor's degree in Computer Science from Monad University, covering core computer science subjects.
Tech stack
Software and tools used professionally
Availability
Location
IndiaAuthorized to work in
Salary expectations
Social media
Job categories
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