You will get Expert Debugging & Performance Optimization for React, Node.js & MERN
Project details
Is Your App Broken? Hire a Debugging Expert.
Bugs and crashes cost you customers. I'm a Full Stack Developer who specializes
in deep level debugging identifying the root cause and delivering a stable, long
term solution, not just a quick patch.
What I Resolve & Fix
⫸ Frontend: UI glitches, React hooks, Tailwind responsiveness, and JS bugs.
⫸ Backend: Node.js/Express/Next.js crashes, API failures, and server logic.
⫸ Database: MongoDB/SQL errors, slow queries, and data integrity.
⫸ Auth & Security: JWT/OAuth loops, form failures, and permission bugs.
⫸ Deployment: Resolving build errors on Vercel, Netlify, and AWS.
Why Choose Me?
⫸ Root Cause Fix: I target the source so the bug doesn't return.
⫸ Clean Code: Optimized, maintainable fixes no "spaghetti" code.
⫸ Security First: Ensuring fixes don't create new vulnerabilities.
⫸ Tested Delivery: Every fix is rigorously tested before delivery.
⫸ Proven Track Record: 5+ projects delivered in the last 2 months.
Workflow: Analysis → Root Cause Fix → Testing → Deployment.
Message me now for a reliable, expert code fix to get your project back on track!
Bugs and crashes cost you customers. I'm a Full Stack Developer who specializes
in deep level debugging identifying the root cause and delivering a stable, long
term solution, not just a quick patch.
What I Resolve & Fix
⫸ Frontend: UI glitches, React hooks, Tailwind responsiveness, and JS bugs.
⫸ Backend: Node.js/Express/Next.js crashes, API failures, and server logic.
⫸ Database: MongoDB/SQL errors, slow queries, and data integrity.
⫸ Auth & Security: JWT/OAuth loops, form failures, and permission bugs.
⫸ Deployment: Resolving build errors on Vercel, Netlify, and AWS.
Why Choose Me?
⫸ Root Cause Fix: I target the source so the bug doesn't return.
⫸ Clean Code: Optimized, maintainable fixes no "spaghetti" code.
⫸ Security First: Ensuring fixes don't create new vulnerabilities.
⫸ Tested Delivery: Every fix is rigorously tested before delivery.
⫸ Proven Track Record: 5+ projects delivered in the last 2 months.
Workflow: Analysis → Root Cause Fix → Testing → Deployment.
Message me now for a reliable, expert code fix to get your project back on track!
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$45
|
Standard
$100
|
Advanced
$200
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 6 days |
Number of Revisions | 2 | 4 | 6 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $80
Additional Revision
+$20Frequently asked questions
About Senthilnathan
Full Stack MERN & Next.Js Developer | AI Powered Web Apps & SaaS MVPs
Chennai, India - 2:10 am local time
Specializing in the MERN stack, Next.js, Electron, and AI integrated web architecture, I handle everything from complex full stack builds from scratch to critical bug fixes and performance optimization.
CORE EXPERTISE
⫸ AI Integration : Building LLM powered tools, automated workflows, and smart features using OpenAI's API.
⫸ Full Stack & Desktop : End to end MERN, Next.js, and Electron desktop platforms built with clean, modular code.
⫸ Scalable Architecture : Robust database schema design (MongoDB, SQL, SQLite), RESTful API development, and MVC architecture.
⫸ Security & Auth : JWT authentication, Role Based Access Control (RBAC), 2FA, and industry standard security best practices.
⫸ Performance & UX : Highly responsive, speed-optimized React, Tailwind CSS, and 3D/motion driven frontends.
⫸ Quality Assurance : Rigorous code refactoring, thorough testing, and bug free deployments.
RECENT WORK & PROVEN IMPACT
⫸ Sugam HMS (Desktop Hospital Management System)
• What I built : A production ready desktop app using Electron, Next.js, and SQLite with RBAC, POS billing (GST), and barcode inventory.
• Client Impact : Eliminated error prone paper records and slow spreadsheets, reducing checkout friction and saving staff hours of administrative data entry daily.
⫸ Cresto Physiotherapy & Clinic Platform
• What I built : A Full Stack booking system for a Bengaluru clinic featuring real-time therapist selection, automated WhatsApp/email confirmations, and a custom admin dashboard.
• Client Impact : Solved missed appointments and low local visibility, driving a frictionless booking journey that cut administrative scheduling phone calls by an estimated 70%+.
⫸ Rotaract Club Management System (Enterprise ERP)
• What I built : A secure, centralized MERN stack ERP platform featuring RBAC, 2FA, JWT authentication, automated financial reporting, and real time expense approval workflows.
• Client Impact : Replaced chaotic spreadsheets with a secure, accountable system, ensuring full audit trails, zero data discrepancies, and effortless year wise archival for club administration.
⫸ Laraspinal (Handcrafted E-Commerce Platform)
• What I built : A bespoke e-commerce platform custom built for handcrafted products with a seamless, conversion focused user journey.
• Client Impact : Clients reported a noticeable drop in cart abandonment and a smoother mobile responsive checkout experience, turning casual visitors into buyers.
I usually respond within a few hours and start every engagement with a quick technical audit of what you already have. If you need a reliable technical partner who treats your project like their own, let's talk about your goals and get started!
Steps for completing your project
After purchasing the project, send requirements so Senthilnathan can start the project.
Delivery time starts when Senthilnathan receives requirements from you.
Senthilnathan works on your project following the steps below.
Revisions may occur after the delivery date.
Bug Analysis
I review your source code, error logs, and bug description to identify the root cause of the issue before making any changes.
Fix & Test
I fix the bug with clean, optimized code and test it thoroughly across scenarios to confirm the issue is fully resolved.