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I will fix bugs and optimize performance in your react nextjs typescript project
Mark N
5.0
5.0
About this gig
Are bugs breaking your application, or a slow Next.js site hurting your Google SEO rankings? Let's fix that today.
I'm a professional Full-Stack Developer specializing in modern JavaScript ecosystems. I will debug your code, resolve errors, and drastically improve your Core Web Vitals so your site runs lightning-fast.
What I Can Fix For You:
- Next.js Hydration Errors and Server-Side Rendering (SSR/SSR) mismatches.
- TypeScript compilation issues, type mismatches, and build errors.
- React hooks bugs (infinite re-render loops with useEffect, state management issues).
- API route failures and middleware authentication bugs.
- Broken responsive layouts, CSS-in-JS, or Tailwind utility bugs.
Performance Optimization Services:
- Optimizing Core Web Vitals (LCP, FID, CLS) for better SEO.
- Implementing proper dynamic imports and lazy loading.
- Image and font delivery optimization using Next/Image.
- Bundle size reduction and dead-code elimination.
- Setting up efficient caching and incremental static regeneration (ISR).
Why Me?
- Clean, well-documented, type-safe code revisions.
- Fast turnaround and transparent communication.
- 100% satisfaction guarantee.
Please contact before placing an order to discuss issue
Get to know Mark N
Mark N
Full stack developer crafting fast, scalable digital solutions
- FromKenya
- Member sinceDec 2018
- Avg. response time3 hours
- Last delivery10 months
Languages
English, Swahili
Hi! I am a Full-Stack & Mobile Developer specializing in high-performance web and mobile ecosystems. With expert-level mastery in JavaScript, TypeScript, Next.js, and Java, I engineer scalable digital products from the ground up. Whether you need a cross-platform iOS/Android app built in React Native, an SEO-optimized Next.js web application, or a secure enterprise-grade Java backend, I write clean, type-safe code that delivers results. Check out my gigs, browse my portfolio, and let's bring your tech product to life!
FAQ
What services do you offer?
I offer expert Mobile and Web App development services using technologies like React.js, React Native, Node.js, and Spring Boot.
Can you build both iOS and Android apps?
Yes, I specialize in cross-platform development and can create apps for both iOS and Android platforms using React Native.
Do you provide backend development as well?
Absolutely! I have experience in backend development with Node.js and Spring Boot, ensuring a complete end-to-end solution.
Can you work on existing projects or only new ones?
I can work on both existing projects that need enhancements or new projects from scratch.
How do you ensure the security of the apps you develop?
Security is a top priority. I follow best practices to secure apps, implement data encryption, and conduct thorough testing for vulnerabilities.
Can you integrate third-party APIs into the apps?
Yes, I can seamlessly integrate various third-party APIs to add features and functionalities as per your requirements.
Will I get regular updates during the development process?
Absolutely! I provide regular progress updates and encourage open communication throughout the development cycle.
Do you offer post-launch support and maintenance?
Yes, I offer post-launch support and maintenance to ensure your app runs smoothly and address any issues that may arise.
What is the typical turnaround time for a project?
Turnaround time varies based on project complexity. I provide a clear timeline during the initial discussion.
How can I get started with a project?
Simply reach out to me through the Gig, and we can discuss your requirements, timeline, and project scope to get started on your app journey!
Reviews
2 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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V victorgvobregon
Spain
Trabajar con Mark es siempre una grata expieriencia, gran profesionalismo y atención al detalle e involucración en el proyecto , recomendado 100%
Up to $50
Price
4 days
Duration
Helpful?V victorgvobregon
Spain
Mark truly shines in the software developemt realm with his professionalism and expertise in code, delivering exceptional quality with impeccable attention to detail.
$200-$400
Price
13 days
Duration
Helpful?
Reviews
2 reviews for this Gig
| (2) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
V victorgvobregon
Spain
Trabajar con Mark es siempre una grata expieriencia, gran profesionalismo y atención al detalle e involucración en el proyecto , recomendado 100%
Up to $50
Price
4 days
Duration
Helpful?V victorgvobregon
Spain
Mark truly shines in the software developemt realm with his professionalism and expertise in code, delivering exceptional quality with impeccable attention to detail.
$200-$400
Price
13 days
Duration
Helpful?
