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I will build or fix full stack react nextjs nodejs applications
Leslie Shumba
About this gig
Need a fast, affordable MERN/React/Next.js fix or a small full-stack app? I'm an intermediate full-stack developer (3-5 years) specialising in React, Next.js, Node and MERN. I deliver low-cost entry fixes, landing pages and starter templates and scale up to deployed full-stack apps with auth, DB, payments and 3rd-party APIs. Services: bug fixes, maintenance, deployment, performance & security tuning, API & webhook integrations, payment setup. Deliverables include live demo, staging URL, production deployment support, source code, README and tests. Communication via Fiverr messages and scheduled Zoom calls. Free short-term support (7-30 days). Please send a project brief, wireframes and API credentials before ordering so I can provide an accurate quote.
Get to know Leslie Shumba
Leslie Shumba
Enterprise Grade Code AI Powered Growth
- FromZimbabwe
- Member sinceJul 2021
Languages
English, Shona
🚀 Web Dev & AI Automation Expert
I build intelligent digital assets that grow your brand. Specialized in Python and JavaScript, I create high-performance, SEO-optimized websites.
Beyond coding, I am an n8n & AI Specialist. I turn websites into automated powerhouses by integrating AI agents and custom workflows that handle leads and support 24/7.
Expertise: ✅ Custom Web Apps (React, FastAPI) ✅ n8n Business Automation ✅ AI Chatbots & Agents ✅ SEO & UX Strategy
Let’s automate your success. Message me to start!
My Portfolio
FAQ
Which technologies do you specialize in?
I am an expert in the MERN stack (MongoDB, Express.js, React, Node.js) and Next.js. Whether you need a high-performance frontend using Tailwind CSS or a robust backend with secure APIs, I’ve got you covered.
Can you fix bugs in an existing codebase?
Absolutely. I provide "low-cost entry fixes" for React, Next.js, and Node.js applications. Whether it’s a broken UI component, a failing API route, or a deployment error on Vercel/Netlify/Heroku, I can jump in and resolve it quickly.
What do I need to provide before we start?
To give you an accurate quote and timeline, please send a project brief, any available wireframes/designs (Figma or sketches), and API credentials if we are integrating 3rd-party services.
Do you handle deployment and hosting?
Yes! Every fullstack package includes production deployment support. I can set up your app on platforms like Vercel, AWS, or DigitalOcean, ensuring your DB, Auth (NextAuth/Clerk), and Environment Variables are configured correctly.
Will I receive the source code?
Yes, 100%. Upon completion, you will receive the full source code, a detailed README file for local setup, and any relevant test suites.
Can you integrate payment gateways?
Yes. I have extensive experience integrating Stripe, PayPal, and other 3rd-party payment APIs, including secure webhook handling to ensure your transactions are processed reliably.
Is my application secure?
Security is a priority. I implement JWT or session-based authentication, protect against common vulnerabilities like XSS and CSRF, and ensure your database schemas are properly validated.
What kind of post-delivery support do you offer?
I offer free short-term support (7–30 days) depending on the package. If you find a bug or have a question about the code I delivered, I’m here to help at no extra cost.
How will we communicate during the project?
All primary communication stays on Fiverr messages to keep a record of our requirements. For complex architectural discussions or project handovers, we can schedule Zoom calls via the Fiverr platform.
