You will get React & Next.js bug fixing
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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
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About Artem
Senior React Developer | React Native & React Developer | Full-Stack.
100%
Job Success
Korosten, Ukraine - 6:24 am local time
🐝 Top 3% Freelancer on Upwork (Top 1% in Frontend Development)
🎉 7+ Years of Real-World Product Development
🏅 Meta & IBM Certified Frontend Developer
💰 Delivered projects generating $1M+ in revenue
🚀 Built 50+ MVPs and full-scale applications across industries
💫 I’m not just a developer - I treat every product like a carefully crafted LEGO build, where every small detail matters and every piece has to fit perfectly. I’m deeply detail-oriented and obsessed with creating polished, scalable and intuitive digital experiences that feel solid from every angle. For me, building products is not only about writing code - it’s about designing systems that are clean, reliable and thoughtfully engineered to grow with the business.
Over the years, I’ve worked with founders, startups and established companies across eCommerce, AI/ML, FinTech, MedTech, EdTech, AdTech and InsurTech. One thing I’ve learned is that successful products are never built by accident. The difference is always in the details - the smooth interaction a user doesn’t notice, the fast-loading page that keeps attention, the scalable architecture that prevents future chaos, or the tiny UX improvement that quietly increases conversions.
When I work on a product, I naturally start thinking beyond the task itself. I look at how every feature connects together, how users will actually experience it, how the product can scale months later and how to keep the codebase clean enough for long-term growth. I genuinely enjoy refining products piece by piece until everything feels intentional and well-crafted.
For me, development feels very similar to building with LEGO - every block matters and strong products are built through precision, patience and attention to structure. A single misplaced piece can affect the entire experience, while the right foundation allows the whole system to grow smoothly and confidently.
That mindset is what I bring into every collaboration: thoughtful engineering, product-oriented thinking and genuine care about the final result - not just completing tasks.
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.
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Delivery time starts when Artem receives requirements from you.
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Revisions may occur after the delivery date.
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