I will develop, optimize, or fix react, nextjs apps with clean code


Vetted Pro
Gig Summary
Vetted by Fiverr Pro
Chamika was selected by the Fiverr Pro team for their expertise.
About this gig
Need a Senior Software Architect to build, scale, or fix your React or Next.js application?
With 15+ years of enterprise engineering experience and Fiverr Pro vetting, I help startups, founders, and businesses engineer fast, modern, and SEO-friendly React & Next.js web applications.
Whether you need a full-stack SaaS MVP from scratch, migration to the Next.js App Router, clean responsive UI components, or complex state management and bug fixing, I deliver clean, production-ready code.
What I Can Do For You:
- Next.js & React Apps: Built with Next.js 14/15+, App Router, Server Actions, TypeScript, and modern React hooks.
- SaaS & Dashboards: Clean data tables, interactive charts, and role-based admin panels.
- State Management & UI: Tailwind CSS, Shadcn UI, Material UI, Redux Toolkit, and Zustand.
- Backend & API Integration: Connect REST APIs, GraphQL, Node.js, Supabase, Firebase, or .NET backends.
- Authentication & Cloud: NextAuth / Auth.js, Clerk, Supabase Auth, and Vercel/AWS deployments.
- Performance & Bug Fixes: Eliminate hydration errors, optimize bundle sizes, and fix SSR/SSG issues.
Why Work With Me?
- Vetted Fiverr Pro Architect: 15+ years of software architecture experience.
Get to know Chamika
Vetted Pro
Full Stack Architect in Dotnet, Angular, React, Azure, Mobile and AI Apps
Chamika is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.
Vetted for
Software Development
Website Development
- FromUnited States
- Member sinceJul 2017
- Avg. response time1 hour
- Last delivery1 year
Languages
English, Sinhala
My Portfolio
FAQ
Do you work with the latest Next.js App Router and Server Components?
Yes. I specialize in modern Next.js architecture (v14 and v15+) using the App Router, React Server Components (RSC), Server Actions, and dynamic streaming, ensuring optimal speed and SEO performance.
Can you fix existing bugs or hydration errors in my React app?
Absolutely. I routinely troubleshoot SSR hydration errors, state synchronization bugs, slow component rendering, and dependency version conflicts directly inside your GitHub, GitLab, or Bitbucket repository.
Which UI libraries and backend tools do you support?
On the frontend, I use Tailwind CSS, Shadcn UI, Radix, Material UI, and Ant Design. For full-stack features, I integrate Supabase, Firebase, Node.js, Prisma, PostgreSQL, MongoDB, or .NET Core APIs.
What timezone do you operate in?
I work in US Eastern Time (EST/EDT), enabling real-time collaboration during North American and European business hours with rapid daily check-ins.
10 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
M martin_rentcard

Germany
Delivered exactly as expected and even slightly faster than the agreed timeframe. Would definitely work again with him!
$1,000-$2,500
Price
3 weeks
Duration
Helpful?E eklavyasehrawat

United States
Ongoing collaborationThis has to be the best next.js developer on this service. From his initial communication to the deployment of the code - it has been perfect
$600-$800
Price
2 weeks
Duration
Helpful?D dwight_fright

Canada
Ongoing collaborationGood developer and fast builder
$200-$400
Price
8 days
Duration
Helpful?D dev_aristotle

United States
Ongoing collaborationChamika is a superstar developer and co-worker. I have never worked with anyone so knowledgeable; willing to communicate; and cares about his work and yours. He helped me complete my life’s dream Ncrease — fintech. I can’t wait to work with Chamika again!!!!!!
$400-$600
Price
5 weeks
Duration
Helpful?D dev_aristotle

United States
Ongoing collaborationChamika communicated effectively from beginning to the completion of my project. I struggled at time to say what I needed and wanted and through examples, he went the extra mile to make my project build fun and informative. He is a 💎!
$200-$400
Price
7 days
Duration
Helpful?
10 reviews for this Gig
| (10) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
M martin_rentcard

Germany
Delivered exactly as expected and even slightly faster than the agreed timeframe. Would definitely work again with him!
$1,000-$2,500
Price
3 weeks
Duration
Helpful?E eklavyasehrawat

United States
Ongoing collaborationThis has to be the best next.js developer on this service. From his initial communication to the deployment of the code - it has been perfect
$600-$800
Price
2 weeks
Duration
Helpful?D dwight_fright

Canada
Ongoing collaborationGood developer and fast builder
$200-$400
Price
8 days
Duration
Helpful?D dev_aristotle

United States
Ongoing collaborationChamika is a superstar developer and co-worker. I have never worked with anyone so knowledgeable; willing to communicate; and cares about his work and yours. He helped me complete my life’s dream Ncrease — fintech. I can’t wait to work with Chamika again!!!!!!
$400-$600
Price
5 weeks
Duration
Helpful?D dev_aristotle

United States
Ongoing collaborationChamika communicated effectively from beginning to the completion of my project. I struggled at time to say what I needed and wanted and through examples, he went the extra mile to make my project build fun and informative. He is a 💎!
$200-$400
Price
7 days
Duration
Helpful?

