Kamlesh Kumar
Verified Expert in Engineering
Full-stack Developer
Ghaziabad, Uttar Pradesh, India
Toptal member since July 2, 2021
Kamlesh is a senior front-end engineer specialising in React and Redux, React Native, Next.js, with 10+ years of experience building enterprise dashboards, SaaS platforms, and real-time applications. With strong back-end expertise in Node.js, he brings full-stack capabilities that ensure seamless integration between UI and APIs. Kamlesh has worked with enterprise clients like Walmart, Gartner, and Cruise. C
Portfolio
Experience
- JavaScript - 10 years
- React - 9 years
- Redux - 6 years
- TypeScript - 5 years
- Node.js - 5 years
- Next.js - 4 years
- MongoDB - 4 years
- GraphQL - 4 years
Work Experience
Senior Software Engineer
SafeAI
- Developed a fleet management system that tracks all the equipment on the site. Their live GPS has positions and modes like driving, loading, or stopping. Developed assignment management system and analytics tools with dynamic charts.
- Worked on bug fixes and improvements in the performance of existing applications.
- Increased the application performance by 40% in terms of speed, effectiveness, and size of the files after the revamp.
- Performed a lot of live data integration with multidirectional communication using Socket.IO and GraphQL. This system manages autonomous vehicles that drive on the mining sites.
Senior Consultant | Walmart
Xebia Group
- Collaborated with the product and design team and participated in groomings.
- Served as a primary front-end team member working on an eCommerce web app.
- Optimized accessibility issues and standards in the application, considering A11Y rules.
- Created filter components, vouchers, and recipe views.
- Added test cases for old code and optimized existing code and test cases.
Senior Full-stack Developer
Spraxa Solutions Pvt
- Created a visitor application in React, Node.js, and React Native, developing most of the web back end and front end.
- Developed a solution to track sales and coolers at remote locations. This was part of a bigger project with 4-5 applications built in React.
- Built a case management system for a medical software provider client while working as a full-stack developer.
- Led a team of five developers working on an IoT project for 2.5 years and played a key role in requirements discussions and demos.
Software Developer
Spraxa Solutions
- Developed a tracking system, using Google and ALK Maps, allowing clients to track the location of their trucks and trailers.
- Created invoice reports using C1 Reports and created a system in C# to generate automated reports based on JSON information.
- Built a mobile application using Sencha Touch, allowing drivers to track orders and tasks and check routes.
- Integrated multiple third-party APIs to fetch and use data in our application.
- Integrated Quickbooks with our application so that it was user-friendly and invoices could be shredded directly on QuickBooks through tasks. Customer, order, and invoice data were synced between the apps.
Trainee Software Developer
Durlabh Computers
- Built a dispatching system for tailored logistics, which included creating and modifying trips and adding modifying tasks during trips.
- Created Ext JS grids and forms for multiple screens, including multilevel forms.
- Developed views, procedures, and triggers for the business logic.
- Learned .NET and SQL and developed my first application here.
Project History
Capterra by Gartner
ASDA – by Walmart
Centra | A Machine Learning (ML) Platform for ML Engineers at Cruise
https://www.getcruise.com/Zeno – Fleet Management
CoolR
https://www.coolrgroup.com/Tailored Logistics Solutions (TLS)
NUVO EMR | Scheduling System
Education
Bachelor's Degree in Computer Science
Uttar Pradesh Technical University - Kanpur, India
Three-year Diploma in Information Technology
Board of Technical Education Uttar Pradesh - Lucknow, India
Certifications
Al For Developers
Udemy
Skills
Libraries/APIs
Node.js, React, React Redux, React Router, Context API, React Testing Library, React Hook Form, D3.js, Chart.js, REST APIs, API Development, React Query, Playwright, OpenAI API, Apollo Client, GraphQL API, SendGrid API, MobX, Stripe API, Stripe, Mirth Connect, Twilio API, Formik, FFmpeg, jQuery, SignalR, Socket.IO, Google Maps API, Web3.js, Leaflet, WebGL, Claude API
Tools
GitHub, Visual Studio, NPM, JSX, Git, Jira, Elastic, Canvas 2D, Figma, Postman, Redux Toolkit, Sencha UI, GitLab, Confluence, Expo, Canvas, RTK Query, Shadcn, Prisma, SendGrid, Claude Code, Webpack, Babel, ChatGPT, RabbitMQ, Docker Compose, Claude, Amazon Elastic Container Service (ECS)
Languages
JavaScript, SQL, HTML5, HTML, CSS, TypeScript, ECMAScript (ES6), C#, SCSS, GraphQL, CSS3, Sass, Active Server Pages (ASP), Java, Python
Frameworks
Ext JS, Redux, .NET, React Native, Next.js, Tailwind CSS, Material UI, MUI CSS, JSON Web Tokens (JWT), Jest, ASP.NET, Bootstrap, Ant Design, Electron, Swagger, Django, Express.js, Vanilla JS, Cypress, Flux, ASP.NET MVC, NestJS, Angular, .NET Core
Paradigms
Agile, Responsive, Mobile Development, Unit Testing, Test-driven Development (TDD), UI Design, UX Design, Responsive Web Design (RWD), DevOps, Testing, Microfrontends, HIPAA Compliance, REST, Microservices, Serverless Architecture, Rapid Prototyping
Platforms
Visual Studio Code (VS Code), Azure, Amazon Web Services (AWS), Blockchain, Firebase, Microsoft, Linux, Google Cloud Platform (GCP), Docker, Mobile, DigitalOcean, Twilio, Contentful, Vercel, Kubernetes, Mapbox, AWS Lambda
Storage
MongoDB, Databases, MySQL, PostgreSQL, Amazon S3 (AWS S3), Elasticsearch, JSON, Microsoft SQL Server, Azure Blobs, Database Migration, Google Cloud, Redis
Industry Expertise
Web Design, Healthcare
Other
Charts, User Experience (UX), User Interface (UI), Front-end, Full-stack, Front-end Development, Team Leadership, Full-stack Development, API Integration, UI Components, Web Development, UI Development, Styled-components, Axios, Front-end Design, Front-end Architecture, Startups, Minimum Viable Product (MVP), Mobile First, Code Review, Pixel Perfect, Dashboards, Tailwind UI, Ajax, Design, Analytics, MERN Stack, Application State Management, React Components, AI Tools, Component Testing, Progressive Web Applications (PWAs), Figma to React, Back-end, Responsive UI, Web App Development, Core Web Vitals, SEO Tools, Healthcare IT, APIs, Enzyme, eCommerce, Data Visualization, Artificial Intelligence (AI), Back-end Development, SaaS, CI/CD Pipelines, Material Design, Design Systems, OpenAI, Leadership, Cloud, Localization, Signals, Internet of Things (IoT), Vite, Crypto, UI Libraries, UI Frameworks, Single-page Applications (SPAs), Cryptocurrency, Atomic Design, Forms, WebSockets, Generative Artificial Intelligence (GenAI), SVG, AI Integration, Cursor AI, HTTPS, Azure Blob Storage, CSS-in-JS, Accessibility, API Design, Apollo Server, Content Management Systems (CMS), UI Testing, Payment APIs, PayPal, Google Analytics 4 (GA4), Maps, Electronic Medical Records (EMR), Data Grids, Web Services, Apollo, Storybook, Live Chat, Architecture, Software Architecture, Web Scraping, Server-side Rendering (SSR), Google Sign-in, Single Sign-on (SSO), HL7, Data Management, ChatGPT API, Google Cloud Functions, GitHub Actions, Microsoft Office, Headless CMS, A/B Testing, A11Y, Web3, MacBook, Zustand, Large Language Models (LLMs), SDKs, Webhooks, Prompt Engineering, Web Accessibility, Cloudflare, GitHub Copilot Chat, ChatGPT Prompts
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