You will get a full performance audit and optimization for your React or Next.js app
Project details
Slow apps lose users. I've taken a production dashboard from a 4.2s to a 2.1s load time, cutting it in half, using code splitting, lazy loading, and concurrent API requests with Promise.all. This project delivers a full Lighthouse and Core Web Vitals audit of your React or Next.js application, plus hands-on fixes applied directly to your codebase. You get a written report with prioritized findings AND the actual code changes, not just a list of problems to fix yourself. My own projects score 96-99 on Lighthouse across performance, accessibility, best practices, and SEO. That's the baseline I work from.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance OptimizationWhat's included $350
These options are included with the project scope.
$350
- Delivery Time 5 days
- Number of Revisions 1
- Source Code
Optional add-ons
You can add these on the next page.
Fast 3 Days Delivery
+$100
Additional Revision
+$50
Bundle analysis + dependency cleanup
(+ 1 Day)
+$100Frequently asked questions
About Gerson
Senior Frontend Developer | Next.js | TypeScript | React
Puebla, Mexico - 6:56 pm local time
9 years of frontend experience. My recent work includes:
→ Migrating a full e-commerce platform to Next.js from scratch and building a 15+ component library with Material UI that cut development time by 40%
→ Building a real-time notification system with Context API and WebSockets used across multiple ERP modules
→ Optimizing a data-heavy dashboard from 4.2s to 2.1s load time using code splitting, lazy loading, and concurrent API requests
→ Mentoring 5 developers through structured code reviews, reducing QA bugs by 30%
I also built and ship my own SaaS product: a personal finance tracker built on Next.js 14, TypeScript, MongoDB, TanStack Query, and React Hook Form. It has 84 automated tests across 17 suites, full WCAG 2.1 accessibility compliance, Google OAuth, and a CI/CD pipeline. I use it daily. You can see it live. Link below.
My approach: I define edge cases before touching code, write tests before implementing new logic, and use AI tools (Claude, GitHub Copilot) to move faster without sacrificing judgment. Every architecture decision I make has a reason I can explain.
What I'm best at:
· Next.js 14 / React / TypeScript
· TanStack Query, React Hook Form, Redux
· Tailwind CSS, Material UI
· MongoDB, Node.js, REST APIs
· Jest + React Testing Library (84 tests shipped)
· WCAG 2.1 accessibility
· Performance optimization (Lighthouse, Core Web Vitals)
I work well with founders, product teams, and agencies. If you need someone who can own a feature end-to-end: from architecture decision to tested, accessible, production-ready code. Let's talk.
Steps for completing your project
After purchasing the project, send requirements so Gerson can start the project.
Delivery time starts when Gerson receives requirements from you.
Gerson works on your project following the steps below.
Revisions may occur after the delivery date.
Run Lighthouse and Core Web Vitals audit, document baseline metrics
Analyze bundle size & render blocking
I also check unnecessary re-renders, and API waterfalls