Senior ReactJS Developer with 7+ Years of Experience

NARAYAN

ReactJS Developer

Phone: +1-904-***-****

Email: *********@*****.***

PROFESSIONAL SUMMARY

ReactJS Developer with 7+ years of experience building fast, scalable, and user-friendly web applications. Proven track record developing dynamic UIs, reusable component libraries, and responsive front-end architectures using React.js (v18), Next.js, JavaScript (ES6+), HTML5, and CSS3. Deep expertise in state management (Redux Toolkit, Context API, React Query), REST API integration, and performance optimization. Experienced in Agile teams, collaborating closely with designers and backend engineers to deliver polished digital products. Familiar with SaaS and product development environments.

TECHNICAL SKILLS

Frontend

React.js (v18), Next.js, JavaScript (ES6+), TypeScript, HTML5, CSS3

UI Libraries

Material UI, Tailwind CSS, Bootstrap, Styled Components

State Management

Redux Toolkit, Context API, React Query, Zustand

API Integration

REST APIs, GraphQL (Apollo Client), tRPC

Testing

Jest, React Testing Library, Cypress, Playwright

Build Tools

Webpack, Vite.js, Babel

Version Control

Git, GitHub, GitLab, Bitbucket

CI/CD & DevOps

GitHub Actions, Jenkins, Docker, Kubernetes

Backend (Basic)

Node.js, Nest.js, Python (FastAPI/Flask)

Cloud & Monitoring

AWS (EC2, S3, Lambda), CloudWatch

Design

Figma, Responsive Design, WCAG 2.1 / ADA

Methodologies

Agile / Scrum, Code Reviews, Component-Driven Development

WORK EXPERIENCE

ReactJS / Full Stack Developer

FIS Global (Remote) March 2024 – Present

Product: ProFunds – Web-based financial platform for active investors to trade mutual funds with compliance workflows.

• Developed dynamic, high-performance web applications using React 18 and Next.js, supporting real-time trading and compliance workflows for thousands of concurrent users.

• Built and maintained a library of reusable UI components with TypeScript, Material UI, and Styled Components, ensuring consistent design across multiple front-end applications.

• Collaborated closely with UI/UX designers to translate Figma prototypes into pixel-perfect, accessible, and responsive interfaces.

• Integrated RESTful APIs and Node.js/Python microservices into the React frontend, implementing secure authentication (JWT/OAuth 2.0), retry logic, and fault-tolerant error handling.

• Optimized application speed and performance using code splitting, lazy loading, SSR/ISR (Next.js), and caching strategies — significantly improving Core Web Vitals and Lighthouse scores.

• Managed complex application state with Redux Toolkit and React Query, enabling predictable UI behaviour in data-heavy financial workflows.

• Debugged and resolved production issues across the React front end, leveraging CloudWatch logs and Splunk to identify root causes and minimize downtime.

• Implemented CI/CD pipelines (Jenkins, GitHub Actions) for automated build, test, and deployment workflows.

• Wrote comprehensive unit and end-to-end tests using Jest, Cypress, and Playwright, ensuring reliability of critical financial UI flows.

• Participated actively in Agile/Scrum ceremonies — sprint planning, standups, retrospectives — collaborating with product managers and backend teams.

Tech Stack: React 18, Next.js, TypeScript, JavaScript (ES6+), HTML5, CSS3, Material UI, Styled Components, Redux Toolkit, REST APIs, Node.js, Nest.js, Python, Docker, Kubernetes, AWS, Jenkins, GitHub Actions, Jest, Cypress, Playwright, Agile.

Front-End Developer (ReactJS)

Staples (Framingham, MA) March 2023 – Feb 2024

Project: Product Comparison Web Application – Dynamic platform with real-time pricing and feature comparison.

• Built scalable, responsive web applications using React 18, TypeScript, and Web Components, enabling dynamic real-time product comparisons across thousands of SKUs.

• Designed and developed reusable front-end component libraries and shared UI modules used across multiple product teams.

• Worked directly with UX/UI designers to convert Figma designs into responsive, multi-device interfaces using HTML5, CSS3, Tailwind CSS, and Grid/Flexbox layouts.

• Integrated REST APIs and Socket.io for real-time product availability and pricing updates, providing seamless experiences without page reloads.

• Implemented state management using Redux Toolkit, Zustand, and React Context API for deterministic state transitions in complex, form-heavy workflows.

• Optimized application performance via lazy loading, code splitting, and React Query caching, reducing redundant API calls and improving page load times.

• Deployed applications on AWS/GCP with Docker and Kubernetes; automated pipelines using GitHub Actions and Terraform.

• Delivered unit, integration, and E2E tests with Jest, Cypress, and Playwright in an Agile team setting.

Tech Stack: React 18, TypeScript, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, Material UI, Redux Toolkit, React Query, Socket.io, REST APIs, Node.js, Python, Docker, Kubernetes, AWS, GitHub Actions, Jest, Cypress, Playwright, Agile.

UI / ReactJS Developer

Science 37 (TX) Jan 2022 – Feb 2023

Product: Patient Recruitment Platform – Accelerating clinical research with universal trial access.

• Built reusable React 18 components and custom hooks with TypeScript, supporting scalable and maintainable patient recruitment workflows.

• Developed a healthcare-focused design system using Styled Components and SCSS ensuring WCAG 2.1 / ADA accessibility compliance.

• Integrated RESTful APIs and GraphQL (Apollo Client, tRPC) for secure, efficient data exchange across patient data pipelines.

• Implemented real-time event-driven UI updates using Socket.io, providing clinicians with live patient status visibility.

• Partnered with UX teams to transform Figma prototypes into accessible, mobile-first interfaces for diverse patient demographics.

• Migrated legacy React codebases to modern functional, hook-driven architectures with Suspense and lazy loading for improved performance.

• Built and maintained CI/CD-level test coverage using Jest, React Testing Library, and Playwright.

Tech Stack: React 18, TypeScript, JavaScript (ES6+), HTML5, Styled Components, SCSS, Redux, GraphQL, Apollo Client, Socket.io, OAuth 2.0, JWT, AWS Lambda, GitLab CI/CD, Jest, Playwright, Figma.

Web Developer (ReactJS)

Citrix Systems (Bangalore, India) Nov 2018 – July 2021

Project: Citrix Workspace Analytics Dashboard – Real-time admin insights on virtual workspace usage.

• Designed and developed React.js components, managing virtual DOM rendering and building interactive, reusable UI elements with React component-based architecture.

• Implemented state management using Redux, ensuring consistent and predictable UI behaviour across the application.

• Collaborated with UX/UI designers to convert wireframes and mockups into responsive, interactive interfaces using HTML5, CSS3, JavaScript (ES6+), and Bootstrap.

• Integrated REST API responses into the React front end, handling JSON data exchange between client and backend.

• Utilized TypeScript for type-safe React development, reducing runtime errors and improving maintainability.

• Applied responsive design techniques (media queries, Grid/Flexbox) ensuring cross-device compatibility.

• Participated in daily Scrum meetings, sprint demos, and Agile ceremonies, working closely with team leads and architects.

• Maintained source code with Git, managed branching/merging workflows, and conducted code reviews.

Tech Stack: React.js, Next.js, TypeScript, JavaScript (ES6+), HTML5, CSS3, Bootstrap, Redux, Node.js, jQuery, Git, GitHub Actions, Jest, Agile/Scrum.

EDUCATION

Masters – Computer Science, Northwest Missouri State University 2022

Contact this candidate