Senior Front-End Engineer | React.js • Next.js • TypeScript

Building scalable, high-performance web applications with 5 years of production experience.

Front-end developer specializing in building scalable, user-focused web applications using React.js, Next.js, and TypeScript. I deliver high-performance UIs for complex, data-rich platforms with seamless API integration and modern front-end tooling.

Currently: Lead Frontend Developer at Fracxn, architecting fintech infrastructure serving global users.

Location: Remote (Based in Nigeria)

Core Technologies

• React.js, Next.js, TypeScript, JavaScript
• HTML5, CSS3, Responsive Design

State & API Management

• Redux Toolkit, Zustand
• TanStack Query, REST APIs, GraphQL

Testing & Quality

• Jest, React Testing Library
• Cypress, Playwright (E2E)

Build Tools & DevOps

• Vite, Webpack, npm
• Git, GitHub Actions, ESLint

Performance Optimization

• Core Web Vitals, Lighthouse Audits
• Code Splitting, Dynamic Imports
• Bundle Size Optimization

Backend Integration

• Firebase, MongoDB
• Authentication Flows, Real-time Updates

April 2023 - Present

• Leading front-end development for a fintech platform serving global users with complex workflows
• Architected an internal API consumption tool that auto-generates TypeScript types, reducing API integration time by 60%
• Reduced bundle size by 30% through dynamic imports and code splitting
• Improved Core Web Vitals scores by 40% via optimized lazy loading and performance profiling
• Built and maintained a scalable component library with comprehensive documentation
• Implemented automated testing pipelines using Jest, React Testing Library, and GitHub Actions

Tech Stack: Next.js, TypeScript, TanStack Query, Redux Toolkit, Jest, Vite

August 2021 - September 2022

• Developed a full-stack marketplace platform (Genadrop) with complex data management and real-time features
• Built responsive UI components ensuring pixel-perfect implementation from design mockups
• Implemented secure authentication flows and user session management using Firebase
• Optimized application performance through lazy loading and efficient state management

Tech Stack: React.js, JavaScript, Firebase, GraphQL, Jest, Cypress

July 2022 - February 2023

• Mentored 20+ candidates on JavaScript, algorithms, React.js, and front-end best practices
• Conducted technical and behavioral interviews evaluating problem-solving and coding skills
• Assessed competency in modern front-end frameworks and testing practices

B2B Fintech & Lending Infrastructure Platform

Leading frontend development for an enterprise platform serving invoice factoring, receivables financing, and embedded finance solutions. Built scalable digital infrastructure enabling businesses to integrate financial services.

Stack: Next.js, TypeScript, TanStack Query, Redux Toolkit

Digital Asset Creation & Marketplace Platform

Developed an asset generation tool with automated rarity calculation from layered artwork components. Built a generative system combining multiple design elements into unique digital collectibles with integrated marketplace functionality.

Stack: React.js, JavaScript, Firebase, GraphQL

Enterprise Payroll Automation & Payment Platform

Developed an automated disbursement system with employee payment management and comprehensive admin dashboard. Implemented risk mitigation features, compliance monitoring, and real-time payment processing with detailed reporting.

Stack: React, TypeScript, Node.js

Carbon Footprint Management & Offset Marketplace

Built an environmental impact calculator with integrated carbon credit marketplace. Enabled users to measure emissions, purchase verified offsets, and earn sustainability certificates with transparent tracking.

Stack: Next.js, TypeScript

• Performance Optimization: Core Web Vitals, Code Splitting, Bundle Optimization
• Component Architecture: Reusable Design Systems, Scalable UI Patterns
• API Integration: REST, GraphQL, Authentication Flows
• Testing: Unit, Integration, E2E Testing Strategies
• Collaboration: Agile/Scrum, Code Reviews, Technical Documentation
• Mentorship: Training Junior Developers, Interview Engineering

• Email: ezekaemmanuel1710@gmail.com
• LinkedIn: emmanuel-ezeka
• Phone: +234 806 481 9800