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$
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I will fix, maintain, optimize and modernize your web application and segacy systems
Amjid
About this gig
I'm a Full Stack Software Developer with 6.5+ years of professional experience, specializing in maintaining, fixing, optimizing, and modernizing existing web applications.
I work with legacy systems, outdated codebases, broken applications, and AI/vibe-coded projects that need proper debugging, cleanup, optimization, and ongoing maintenance.
I can take over an existing project, understand its architecture, identify the root cause of issues, fix bugs, improve performance, optimize databases, modernize outdated code, and make the application easier to maintain.
Core Expertise
- Legacy Application Maintenance & Modernization
- Broken & Buggy Web Application Fixing
- AI / Vibe-Coded Application Maintenance
- Code Review, Cleanup & Refactoring
- PostgreSQL, MySQL & MongoDB
- Database Query & Performance Optimization
- Security & Dependency Updates
- Docker, Nginx, VPS & CI/CD
- Production Deployment & Server Troubleshooting
Whether you have an old legacy system, a project abandoned by a previous developer, an AI-generated application that needs cleanup, or a production app that keeps breaking, I can help stabilize, maintain, and improve it.
Respect third-party rights
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Get to know Amjid
Amjid
Full Stack AI Developer Next js Node js React PostgreSQL
- FromPakistan
- Member sinceFeb 2022
- Last delivery3 years
Languages
Urdu, English, Hindi
I'm a Full Stack Developer with 7+ years of experience building scalable web applications, SaaS platforms, e-commerce stores, dashboards, and APIs. I specialize in Next.js, React, Node.js, TypeScript, PostgreSQL, and Vue.js. I can build your application from scratch or improve an existing project, including frontend, backend, database, API integrations, bug fixing, performance optimization, and deployment. I focus on clean code, reliable communication, and scalable solutions.
My Portfolio
FAQ
Can you maintain or fix an old/legacy web application?
Yes. I can work with older and legacy applications, understand the existing codebase, fix issues, refactor problematic areas, update dependencies, and gradually modernize the system without unnecessary rebuilding.
Can you fix applications built using AI or vibe coding?
Yes. I can debug and maintain applications built with Cursor, Lovable, ChatGPT, Claude, or other AI coding tools, including inconsistent code, broken features, API issues, database problems, and incomplete implementations.
Can you work with an existing codebase developed by another developer?
Yes. You don't need to start from scratch. I can review the existing architecture, understand how the application works, identify problem areas, and continue development or maintenance.
Can you fix a website that is completely broken?
Yes. I can investigate frontend, backend, API, database, authentication, deployment, and server-related issues and work toward identifying and fixing the underlying cause.
Can you optimize my slow database or application?
Yes. I can analyze slow queries, improve database indexes, optimize queries and API calls, review inefficient code, and identify performance bottlenecks in MySQL, PostgreSQL, or MongoDB.
Can you modernize my legacy application?
Yes. I can gradually modernize outdated applications by refactoring code, upgrading dependencies, improving architecture, updating APIs, and introducing modern technologies while keeping the existing business logic where possible.
Can you provide ongoing maintenance after fixing my application?
Yes. I can provide ongoing support for bug fixes, updates, performance improvements, security updates, new features, and general application maintenance.
Should I contact you before placing an order?
Yes, especially for large, legacy, broken, or complex applications. Send me your requirements and, if possible, details about the technology and current issue. I'll review the scope so we can determine the appropriate approach before you order.
