Profile cover photo
You're now following
Error following user.
This user does not allow users to follow them.
You are already following this user.
Your membership plan only allows 0 follows. Upgrade here.
Successfully unfollowed
Error unfollowing user.
You have successfully recommended
Error recommending user.
Something went wrong. Please refresh the page and try again.
Email successfully verified.
User Avatar

Derek C.

@derekcrosslu

monthly-level-two.svg
0.0
0
0.0
0.0
0%

React Performance Expert | Frontend Engineer

$65 USD / Hour
・
Flag of
United States (11:18 PM)
・
Joined on March 3, 2021
$65 USD / Hour
・
Senior Frontend Engineer with 6+ years of experience specializing in high-performance React applications and responsive web interfaces. Proven track record of optimizing web applications for enterprise clients including Capital One and Navy Research Lab. Key Achievements: Reduced load times by 60% for low-bandwidth applications serving 5,000+ rural users Achieved 93% user satisfaction score through responsive React interfaces Improved mobile conversion rates by 35% using performance optimization Built reusable component libraries reducing development time by 40% Increased test coverage by 85% implementing Jest and React Testing Library Technical Expertise: Frontend: React, TypeScript, TailwindCSS, React Native Testing & Quality: Jest, React Testing Library, Performance Optimization Infrastructure: Docker, AWS, Microservices, RESTful APIs Design & UX: Figma, Wireframing, Responsive Design Modern Integration: ChatGPT AI, API Integration Bilingual in English and Spanish, I excel in translating complex requirements into efficient, scalable solutions. Strong focus on performance optimization, component architecture, and exceptional user experience. Available for projects involving React application development, performance optimization, component library architecture, and modern web integration. Committed to delivering high-quality, maintainable code that drives business results.
Changes saved
0.0 · 0 Reviews
Reviews
No reviews to see here!
Experience
Software Engineer
Mar, 2024 - Present
•
9 months, 20 days
Capital One (via Ascendion)
Mar, 2024 - Present
•
9 months, 20 days
Working on infrastructure and UI development, leveraging modern technologies like JavaScript, ReactJS with Redux, and cloud solutions for reliable software delivery.
Mar, 2024 - Present
•
9 months, 20 days
UI Development Lead
Dec, 2021 - Sep, 2023
•
1 year, 8 months
Navy Research Lab via Mobomo
Dec, 2021 - Sep, 2023
•
1 year, 8 months
Spearheaded the UI development of the PML module within IPOWER, focusing on enhancing user experience and facilitating energy management decisions.
Dec, 2021 - Sep, 2023
•
1 year, 8 months
Consultant
Jul, 2019 - Nov, 2021
•
2 years, 3 months
Lucas via Inversiones la Cruz
Jul, 2019 - Nov, 2021
•
2 years, 3 months
Launched a digital loan application platform, built cloud infrastructure from scratch, created a secure API to expose legacy systems, and developed mobile and web applications.
Jul, 2019 - Nov, 2021
•
2 years, 3 months
Education
University of Florida
1994 - 1997
•
3 years
Bachelor in Science
Flag of
United States
1994 - 1997
•
3 years
Verifications
Invite sent successfully!
Thanks! We’ve emailed you a link to claim your free credit.
Something went wrong while sending your email. Please try again.
Registered Users Total Jobs Posted
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2025 Freelancer Technology Pty Limited (ACN 142 189 759)
Loading preview
Permission granted for Geolocation.
Your login session has expired and you have been logged out. Please log in again.