Alex Johnson

Senior Frontend Developer

LinkedIn | GitHub

About

Highly skilled Senior Frontend Developer with 7+ years of experience specializing in building responsive, high-performance web applications using modern JavaScript frameworks like React and Vue. Proven ability to translate complex design concepts into intuitive user interfaces, optimizing for speed and scalability. Adept at collaborating with cross-functional teams to deliver impactful digital solutions that enhance user experience and drive business growth.

Work Experience

Senior Frontend Developer

Tech Solutions Inc.

Jan 2020 - Mar 2024

San Francisco, CA, US

Led the development of scalable frontend architecture and user interfaces for enterprise-level applications, significantly enhancing performance and user engagement.

  • Architected and implemented a new component library using React and TypeScript, reducing development time by 25% and ensuring consistent UI across 5+ products.
  • Optimized application performance, decreasing page load times by 40% through code splitting, lazy loading, and image optimization, improving user retention.
  • Mentored a team of 3 junior developers, fostering best practices in clean code and test-driven development, leading to a 15% reduction in post-deployment bugs.
  • Collaborated with UX/UI designers and backend engineers to integrate RESTful APIs, delivering seamless user experiences for over 100,000 active users.

Frontend Developer

Innovate Digital Agency

Jun 2017 - Dec 2019

New York, NY, US

Developed and maintained responsive web applications for diverse clients, focusing on user experience and cross-browser compatibility.

  • Developed 10+ responsive websites and web applications from concept to deployment using HTML5, CSS3, and JavaScript, ensuring cross-browser compatibility.
  • Integrated third-party APIs and libraries (e.g., Google Maps, Stripe) to enhance functionality, resulting in a 20% increase in feature adoption for client projects.
  • Implemented SEO best practices and accessibility standards (WCAG 2.1), improving client website search rankings by an average of 15%.
  • Participated in agile sprints, delivering features on time and contributing to a 10% improvement in team velocity over 6 months.

Education

Computer Science

University of Technology

3.8/4.0

Sep 2013 - May 2017

Anytown, USA, US

Courses

  • Data Structures and Algorithms
  • Web Development Fundamentals
  • Object-Oriented Programming
  • Database Management

Projects

E-commerce Platform Redesign

May 2023 - Oct 2023

Led the frontend redesign and re-platforming of a major e-commerce website to improve user experience and conversion rates.

Languages

English

Skills

JavaScript

  • ES6+
  • TypeScript
  • Node.js

React

  • Hooks
  • Redux
  • Context API
  • Next.js

Vue.js

  • Vuex
  • Vue Router
  • Nuxt.js

HTML5

  • Semantic HTML
  • Accessibility (A11y)

CSS3

  • Sass
  • Less
  • Styled-Components
  • Tailwind CSS
  • Responsive Design

Version Control

  • Git
  • GitHub
  • GitLab

Testing

  • Jest
  • Enzyme
  • React Testing Library
  • Cypress

Build Tools

  • Webpack
  • Babel
  • NPM
  • Yarn

UI/UX Design

  • Figma
  • Sketch
  • Wireframing
  • Prototyping
  • User-Centered Design

Agile Methodologies

  • Scrum
  • Kanban
  • Jira

Web Performance Optimization

  • Lazy Loading
  • Code Splitting
  • Image Optimization
  • Lighthouse

API Integration

  • RESTful APIs
  • GraphQL
  • Axios
  • Fetch API