Kishorekumar S
Frontend Developer
4+ years exp
JavaScript
TypeScript
Node JS
UX & Visual Polish: 5/10
UI Component Architecture: 4/10
Active 9 days ago
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Overview
Technical skills
Timeline
Roles
Overview
Frontend UI engineer (Middle) specializing in visual implementation of React/Tailwind admin interfaces and content sites. The strongest proven skill is polished, component-scoped styling and UI layout reflected in Header.css, UsersTable.css and globals.css token usage. There is limited public evidence of advanced client-side state management, testing, measured performance work, or deep accessibility engineering.
Technical skills
JavaScript• Junior • 4y+
TypeScript• Senior • 4y+
Node JS• Middle
Frontend
Babel
ESLint
Lighthouse
Material UI
Prettier
React Router
Redux
Redux Toolkit
Tailwind CSS
Vite
Webpack
PostCSS
Next.js
Recharts
React.js• 4y+
DevOps
Git
Rest API
QA
Chrome DevTools
QA
Jest• 4y+
AI/ML
Claude
Copilot
Mobile
State Management
Timeline
Software Engineer
•
Middle
Rently
•
Full-Time
Led a React SSR migration for a high-traffic production application, improving Core Web Vitals and overall user experience. Performed frontend performance investigations and architecture refinements to reduce rendering bottlenecks. Implemented customer-facing features using AI-assisted tooling for code generation, refactoring, debugging, and testing. Improved accessibility by addressing multiple WCAG compliance issues and upgraded the Node.js runtime to reduce security vulnerabilities.
React.js
TypeScript
Node JS
Associate Software Engineer
•
Middle
Rently
•
Full-Time
Implemented route-level lazy loading across multiple React application modules to reduce initial bundle size and improve startup performance. Delivered a React-based rental fee disclosure platform for property listings while supporting regulatory compliance needs. Modernized a Google Maps integration by migrating to advanced marker elements. Built reusable React components and supported agile planning, estimation, and release execution.
React.js
TypeScript
Junior Software Engineer
•
Junior
Rently
•
Full-Time
Increased unit test coverage significantly using Jest and React Testing Library to improve reliability and reduce regression risk. Migrated legacy React class components to TypeScript functional components with stricter typing to reduce runtime errors and improve maintainability. Strengthened frontend application security by implementing security headers to help prevent clickjacking. Collaborated with senior engineers on feature development, issue resolution, and code reviews in an agile setting.
React.jssince 2022
TypeScriptsince 2022
Jest
Middle Frontend Developer
Confidence: Medium UI Engineer
Frontend UI engineer (Middle) specializing in visual implementation of React/Tailwind admin interfaces and content sites. The strongest proven skill is polished, component-scoped styling and UI layout reflected in Header.css, UsersTable.css and globals.css token usage. There is limited public evidence of advanced client-side state management, testing, measured performance work, or deep accessibility engineering.
UI Component Architecture
4/10
How interface parts are built
Component boundaries are visible through modular CSS and token usage, but there is little evidence of custom component logic, composition patterns or a self-authored component library.
Evidence
Project_Dabang_Dashboard/src/components/Header/Header.css: modular header styles and dropdown menu classes
Project_Dabang_Dashboard/src/components/UsersTable/UsersTable.css: scoped table, loading/error/empty states and control styles
kiku-s_blogs/app/globals.css: semantic color tokens and Tailwind token mapping
Responsive & Cross-browser
3/10
Works on all screens and browsers
Basic responsive layout patterns are present (flex, grid, min/max widths) but there is no evidence of advanced responsive tooling, container queries, RTL/i18n handling or feature detection.
Evidence
Project_Dabang_Dashboard/src/components/UsersTable/UsersTable.css: min-width controls and flexible search control
Project-Aforro/src/components/SignIn/SignIn.css: max-width and centered responsive card layout
Performance Optimization
1/10
Speed of the interface
No measured performance work, bundle analysis or advanced optimizations are present; only minimal build tooling configuration is visible.
Evidence
kiku-s_blogs/lib/blogs.ts: synchronous filesystem reads for MDX content (simple server-side IO without caching)
Project_Dabang_Dashboard/vite.config.js: standard Vite + React + Tailwind plugin usage without custom optimization
Accessibility & Semantics
2/10
Usable for everyone
Some accessible concerns are considered in CSS (visible focus styles, hover states) but there is no evidence of ARIA on custom widgets, keyboard focus management, or an a11y testing pipeline.
Evidence
Project_Dabang_Dashboard/src/components/Header/Header.css: :focus styles for search input
Project_Dabang_Dashboard/src/components/UsersTable/UsersTable.css: focus and hover states for inputs and interactive controls
State Management & Data Flow
1/10
Managing data in the app
Server-side helpers and simple file-based data loading exist, but there is no evidence of sophisticated client-side state discipline, request cancellation, optimistic updates or state machines.
Evidence
kiku-s_blogs/lib/blogs.ts: getAllBlogs and getBlogBySlug implement synchronous MDX discovery and reading without caching or async control
UX & Visual Polish
5/10
Look and feel quality
Strong visual polish and UX touches are present in CSS (transitions, skeleton/loading/error states, snackbars), showing attention to perceived quality even without deeper UX engineering patterns.
Evidence
Project_Dabang_Dashboard/src/components/UsersTable/UsersTable.css: loading, error and empty states with spinner and retry button styling
Project_Dabang_Dashboard/src/components/ComingSoon/ComingSoon.css: animated snackbar and button interaction states
Project-Aforro/src/components/SignIn/SignIn.css: elevated sign-in card, shadow and hover/active transitions
Verified artifacts
Expertise
React• Middle
HTML & CSS• Middle
Frontend Architecture & Build Tools• Middle
Technologies
TypeScript• Senior • 4y+
Redux
Webpack
Tailwind CSS
Next.js
Babel
Git
React.js• 4y+
Vite
Material UI
PostCSS
ESLint
Prettier
Recharts
Redux Toolkit
React Router
Lighthouse
Recommendations
- Design and implement UI component libraries and design-system tokens for React + Tailwind projects.
- Build admin dashboards and data-visualization UIs where polished styling, layouts and chart integration (Recharts) are important.
- Develop content-driven Next.js / MDX sites and simple server-side content loaders, improving caching and async handling.
Repositories
The developer's experience in this domain has been verified based on AI analysis of the following repositories:
Junior QA Engineer
Confidence: Medium Generalist
Front-end React developer focused on building component-driven single-page applications with Material UI and axios integration. The strongest proven skill is building CRUD UI and API-integrated components, demonstrated by userDetailsManagementSystem/src/components/Create.js and Display.js which show form validation, axios usage and paginated display. There is little evidence of test infrastructure, CI integration, contract testing or performance/load testing in the public code.
Test Automation Frameworks
2/10
Building automated tests
Basic unit/component test files using Testing Library/Jest are present but there is no test infrastructure, fixtures, factories, parallelization, selector discipline or isolation patterns.
Test Coverage & Strategy
1/10
What and how to test
Very limited test strategy; only trivial component tests appear and there is no visible risk-based tagging, negative-path or boundary tests, property-based tests or mutation testing.
API & Integration Testing
1/10
Testing how parts work together
Application code performs API calls with axios for CRUD against public APIs, but there is no evidence of contract testing, schema validation, idempotency tests or integration containers.
Performance & Load Testing
Testing speed under load
Not evidenced in public code
Bug Reporting & Analysis
Finding and describing bugs
Not evidenced in public code
CI Test Integration
Running tests automatically
Not evidenced in public code
Expertise
Unit & Component Testing• Junior
Industries
Events & Ticketing• Junior
Technologies
QA
JavaScript• Junior • 4y+
Rest API
Chrome DevTools
Jest• 4y+
Recommendations
- Add focused unit and integration tests that assert negative and boundary behavior (invalid input, API 4xx/5xx, timeouts) around Create.js and EditDetails.js and capture expected status codes and messages.
- Introduce a minimal CI pipeline that runs tests and uploads failure artifacts (test reports, snapshots) and add per-test timeouts and targeted retries rather than global retries.
- Add simple API contract or schema checks for the external endpoints (schemathesis or JSON schema validation) and cover idempotency and error responses in tests.
- Improve error handling and secrets management for API calls (do not hardcode tokens in code; use environment variables) and centralize axios instances with retry/backoff policies.
Repositories
The developer's experience in this domain has been verified based on AI analysis of the following repositories:
Intern Backend Developer
Confidence: Low Generalist
An early-career frontend-focused developer with practical experience configuring modern React build tooling and linting. The strongest proven skill is frontend toolchain configuration as shown in vite.config.js and eslint.config.js. There is no publicly available backend code, database schema, API design or production-grade reliability work to evaluate.
API Design
How well APIs are designed
Not evidenced in public code
Data Layer & Database
Working with databases
Not evidenced in public code
Scalability & Performance
Handling load and speed
Not evidenced in public code
System Architecture
Overall system structure
Not evidenced in public code
Security & Auth
Protecting data and access
Not evidenced in public code
Reliability & Observability
Stability and monitoring
Not evidenced in public code
Expertise
Node.js• Intern
Technologies
Node JS• Middle
Recommendations
- Build interactive frontend dashboards and UI components using React and Tailwind while maintaining and improving build and lint configs.
- Contribute to Node.js-based tooling or small backend endpoints to gain experience with API design, schema evolution and error handling.
- Work on end-to-end feature tickets that include simple backend integration so backend patterns like retries, idempotency and migrations become evident.
Repositories
The developer's experience in this domain has been verified based on AI analysis of the following repositories: