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Rahul Kumar Jha

Rahul Kumar Jha

Senior Frontend Engineer

Bengaluru 6+ yrs exp 90 ยท Outstanding

About

Senior Frontend Engineer with 6+ years of experience building scalable, performance-driven React applications, including enterprise IAM and customer-facing B2C products. Strong in React, TypeScript, JavaScript, reusable component architecture, state management, SSR, Node.js integration, and frontend performance optimization. Proven experience improving Core Web Vitals, rendering performance, responsiveness, and product outcomes through scalable frontend architecture, testing, and cross-functional collaboration.

Skills & Expertise (48)

React Expert
9.1/10
7
Years Exp
Typescript Expert
9.0/10
7
Years Exp
React Testing Library Advanced
8.5/10
5
Years Exp
Context API Advanced
8.5/10
5
Years Exp
React Hooks Advanced
8.5/10
5
Years Exp
Next.js Advanced
8.5/10
5
Years Exp
CSS3 Advanced
8.0/10
7
Years Exp
HTML5 Advanced
8.0/10
7
Years Exp
REDUX Advanced
8.0/10
5
Years Exp
Git Advanced
8.0/10
7
Years Exp
REST APIs Advanced
8.0/10
7
Years Exp
Semantic HTML Advanced
8.0/10
7
Years Exp
Responsive UI Advanced
8.0/10
7
Years Exp
Tailwind CSS Advanced
7.8/10
3
Years Exp
Rendering Optimization Advanced
7.5/10
4
Years Exp
Memoization Advanced
7.5/10
4
Years Exp
lazy loading Advanced
7.5/10
4
Years Exp
code splitting Advanced
7.5/10
4
Years Exp
Lighthouse Advanced
7.5/10
4
Years Exp
Vitest Advanced
7.5/10
3
Years Exp
Core Web Vitals Advanced
7.5/10
4
Years Exp
SSR Advanced
7.5/10
5
Years Exp
React Router Advanced
7.5/10
5
Years Exp
Client-side Routing Advanced
7.5/10
5
Years Exp
GraphQL Advanced
7.5/10
4
Years Exp
TanStack Query Advanced
7.5/10
3
Years Exp
Redux-saga Advanced
7.5/10
4
Years Exp
Confluence Advanced
7.0/10
5
Years Exp
SonarQube Advanced
7.0/10
5
Years Exp
SSO Advanced
7.0/10
5
Years Exp
RBAC Advanced
7.0/10
5
Years Exp
IAM Advanced
7.0/10
5
Years Exp
Sentry Advanced
7.0/10
4
Years Exp
LINUX Advanced
7.0/10
4
Years Exp
Jira Advanced
7.0/10
4
Years Exp
Docker Advanced
7.0/10
4
Years Exp
AWS Advanced
7.0/10
4
Years Exp
WebSockets Advanced
7.0/10
4
Years Exp
OAuth2 Advanced
7.0/10
4
Years Exp
JWT Advanced
7.0/10
4
Years Exp
Express.js Advanced
7.0/10
4
Years Exp
Node.js Advanced
7.0/10
4
Years Exp
SEO Advanced
7.0/10
3
Years Exp
A/B testing Advanced
7.0/10
3
Years Exp
Apollo Client Advanced
7.0/10
3
Years Exp
WCAG Advanced
7.0/10
5
Years Exp
ARIA Roles Advanced
7.0/10
5
Years Exp
Claude Code Advanced
6.0/10
2
Years Exp

Work Experience

Senior Frontend Engineer

Mercedes-Benz R&D India (via FirstMeridian Global)

Apr 2026 - Aug 2026

Developed and maintained an enterprise Identity and Access Management (IAM) platform used internally to manage user identities, role-based access control (RBAC), application provisioning, approval workflows, and administrative configurations across the organization. Built platform-level, independently deployable frontend modules (microfrontend architecture) for access requests, role assignments, application provisioning, and organization/user/group management in a React + TypeScript codebase under enterprise security standards (TISAX/ISO 27001), using React Hooks and Context API for reusable component logic and shared application state. Delivered multiple features with client engagement, collaborating with backend and business stakeholders to ship secure, scalable IAM workflows using test-driven development (TDD) with React Testing Library coverage and CI/CD quality gates.

Frontend Engineer

MyYogaTeacher

Apr 2022 - Feb 2026

Led end-to-end frontend development of customer-facing acquisition and onboarding funnels using a microfrontend architecture, enabling independently deployable modules, scalable state management, accessibility, and responsive design. Owned a new multi-step B2C onboarding flow end-to-end (React, TypeScript, TanStack Query, Context API) with state persistence and API caching, cutting drop-off by 22% and raising completion by 30%. Built WhatsApp messaging into Teacher and Care dashboards over WebSockets with templates and secure media sharing, cutting ticket resolution time by 20%. Redesigned the cancellation flow with progressive retention prompts (17% retention uplift) and shipped a membership vacation-pause feature that reduced support tickets by 10-15%. Collaborated closely with product, design, analytics, and backend teams to deliver performant UI, secure authentication (OAuth2/JWT), and reliable API integrations. Established frontend testing practices using React Testing Library and Vitest; improved release stability and reduced production regressions by 30% through unit tests, code reviews, and CI/CD enforcement. Improved Lighthouse Core Web Vitals by optimizing bundle size, memoization, lazy loading, and SSR, increasing performance scores from ~70 to 90+. Implemented SEO-first enhancements including schema markup, optimized meta tags, SSR, and mobile-first design, resulting in a 25% increase in organic visibility. Introduced CMS-driven experimentation and instrumentation for A/B testing, enabling faster data-backed decisions and improving iteration speed by 30%. Mentored 4 junior frontend engineers on React/TypeScript best practices and code review standards. Leveraged AI coding assistants (GitHub Copilot, Claude Code) to accelerate feature development, reducing implementation time by 40%. Configured Sentry with source maps, release tracking, and user context tagging to enable accurate production debugging and faster issue resolution.

Frontend Developer

Script IT Solution

Aug 2019 - Dec 2021

Built modular UI components and applied design patterns to improve usability and performance across transport workflows. Assisted in developing ERP features for payroll and resource management with secure API integrations and data handling, cutting manual processing by 37%. Coordinated with clients and internal teams to plan, prioritize, and deliver features on schedule, improving stakeholder satisfaction by 40%. Optimized component rendering to cut initial load time from 900ms to 320ms, delivering 64% faster render and smoother UX across critical transport workflows. Implemented bundle splitting and lazy loading to support 5k concurrent sessions.

Education

Bachelor of Computer Applications (BCA) - Indira Gandhi National Open University

- 2021 ยท Afghanistan

Certifications

No certifications added yet

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Profile Score Breakdown

๐Ÿ“ท Photo 10/10
๐Ÿ“„ Resume 10/10
๐Ÿ’ผ Job Title 10/10
โœ๏ธ Bio 10/10
๐Ÿ› ๏ธ Skills 20/20
๐ŸŽ“ Education 10/10
โฑ๏ธ Experience 15/15
๐Ÿ’ฐ Rate 0/5
๐Ÿ† Certs 0/5
โœ… Verified 5/5
Total Score 90/100

Profile Overview

Member sinceOct 2026