You will get React & Next.js bug fixing
Top Rated
Top Rated
Project details
I provide professional bug fixing and stabilization services for React and Next.js applications, with a strong focus on reliability, performance, and code quality. I help identify, isolate, and resolve both critical and hard-to-reproduce issues that negatively impact user experience or business metrics.
I have experience working with applications at different stages - from early MVPs to large-scale, production systems used by thousands of users. My work includes fixing runtime and build-time errors, resolving performance bottlenecks, addressing SEO-related issues, and eliminating regressions introduced during scaling or refactoring.
I offer end-to-end support: from in-depth debugging and root cause analysis to code cleanup, refactoring, and preventive improvements. Whether you are facing production bugs, unstable releases, or long-standing technical debt, I help bring your application to a stable, maintainable state.
Bug fixing expertise includes:
React & Next.js runtime and build issues
Performance and memory leaks
SSR / hydration errors
SEO and Lighthouse regressions
State management and data-fetching bugs
Refactoring and codebase stabilization
I have experience working with applications at different stages - from early MVPs to large-scale, production systems used by thousands of users. My work includes fixing runtime and build-time errors, resolving performance bottlenecks, addressing SEO-related issues, and eliminating regressions introduced during scaling or refactoring.
I offer end-to-end support: from in-depth debugging and root cause analysis to code cleanup, refactoring, and preventive improvements. Whether you are facing production bugs, unstable releases, or long-standing technical debt, I help bring your application to a stable, maintainable state.
Bug fixing expertise includes:
React & Next.js runtime and build issues
Performance and memory leaks
SSR / hydration errors
SEO and Lighthouse regressions
State management and data-fetching bugs
Refactoring and codebase stabilization
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included $350
These options are included with the project scope.
$350
- Delivery Time 15 days
- Number of Revisions 0
33 reviews
(32)
(1)
(0)
(0)
(0)
This project doesn't have any reviews.
MC
Mike C.
Jul 23, 2026
30 minute consultation
SC
Sean C.
Jun 26, 2026
Product Engineer, Mobile
Artem is a great developer and a pleasure to work with
JW
Jo W.
Apr 20, 2026
Next.JS Developer
MR
Michel R.
Apr 4, 2026
Figma to Next.js Website – Pixel-Perfect Frontend (Tailwind, Responsive, Animations)
Amazing work by Artem!
VL
Valerie L.
Mar 20, 2026
Senior React Developer
About Artem
Senior React Developer | React Native & React, Next JS | Full-Stack.
100%
Job Success
Korosten, Ukraine - 6:32 pm local time
🐝 Top 3% Freelancer on Upwork (Top 1% in Frontend Development)
🎉 7+ Years of Real-World Product Development
📈 Hands-on experience building products in Pre-Seed, Seed & Series A startups, as well as large-scale enterprise environments.
🏅 Meta & IBM Certified Frontend Developer
💰 Delivered projects generating $6M+ in revenue
🚀 Built 50+ MVPs and full-scale applications across industries
💫 I believe great products are built through thousands of small decisions. The details most people never notice are often the ones that keep users engaged, build trust in the product, and bring them back.
That’s why I never think only about the task in front of me. I think about the entire product - how every feature connects, how users will experience it, how the codebase will scale six months from now, and how today's decisions will affect tomorrow's development.
Over the past 7+ years, I've worked with founders, startups, and enterprise teams across AI/ML, FinTech, MedTech, InsurTech, EdTech, AdTech, and eCommerce. Whether it's an MVP racing toward product-market fit or a mature platform serving thousands of users, my approach stays the same: build it right, keep it clean, and make it easy to grow.
Building software feels a lot like building with LEGO. Every piece has a purpose, and the strongest products are created when every block fits exactly where it belongs.
Tech Stack & Expertise
📱 React (Next.js, Remix, Gatsby), React Native, Vue (Nuxt, Vuex), Angular
🔧 TypeScript, Redux, Thunk, Saga, MobX, Recoil, REST, GraphQL, AJAX
🎨 Material UI, Ant Design, Chakra UI, Bootstrap, TailwindCSS, HTML5, SASS/SCSS
📲 Expo, Google Play, App Store
🚀 JAMstack, Netlify, Contentful, Chrome Extensions
🧪 Jest, Cypress, Jasmine, Mocha, Karma
🐙 GitHub, GitLab, Bitbucket
🖌️ Figma, Adobe Photoshop, Zeplin, InVision
📋 Agile, Kanban, Git Flow, Trello, Asana, Jira
I don’t just deliver features - I build products with care, precision, and strong engineering foundations that help businesses scale confidently.
🚀 Let’s build something exceptional together.
Steps for completing your project
After purchasing the project, send requirements so Artem can start the project.
Delivery time starts when Artem receives requirements from you.
Artem works on your project following the steps below.
Revisions may occur after the delivery date.
Discussion and decision