You will get expert backend bug fixing code refactoring and performance optimization.
Project details
Struggling with backend crashes, broken APIs, spaghetti code, or slow DB queries? Get expert bug fixing, clean code refactoring, and performance optimization for your web app.
With deep experience in high-concurrency architecture and large-scale databases, every issue is diagnosed via structured profiling and fixed without regression bugs.
Services Provided:
• Critical Bug Fixing: Resolving API errors, authentication failures, state management issues, and server crashes.
• Code Refactoring: Transforming legacy spaghetti code into clean, scalable, SOLID-compliant modular architecture.
• Database Query Optimization: Indexing, resolving N+1 query problems, fixing slow MySQL/PostgreSQL joins, and DB sharding.
• Memory Leak & Latency Reduction: Optimizing execution time, CPU usage, and memory consumption.
• Redis Caching & Queue Setup: Implementing caching strategies and background job processing to handle peak traffic.
• Security Audit & Patching: Sanitizing input data, preventing SQL injection, and securing sensitive environment configurations.
Restore speed, stability, and clean architecture to your application today!
With deep experience in high-concurrency architecture and large-scale databases, every issue is diagnosed via structured profiling and fixed without regression bugs.
Services Provided:
• Critical Bug Fixing: Resolving API errors, authentication failures, state management issues, and server crashes.
• Code Refactoring: Transforming legacy spaghetti code into clean, scalable, SOLID-compliant modular architecture.
• Database Query Optimization: Indexing, resolving N+1 query problems, fixing slow MySQL/PostgreSQL joins, and DB sharding.
• Memory Leak & Latency Reduction: Optimizing execution time, CPU usage, and memory consumption.
• Redis Caching & Queue Setup: Implementing caching strategies and background job processing to handle peak traffic.
• Security Audit & Patching: Sanitizing input data, preventing SQL injection, and securing sensitive environment configurations.
Restore speed, stability, and clean architecture to your application today!
Programming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$80
|
Standard
$200
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | ||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$40 - $200
Additional Revision
+$40
Additional Page
(+ 2 Days)
+$40
Design Customization
(+ 2 Days)
+$50Frequently asked questions
About Md. Moinul
Full Stack SaaS Developer | Laravel, Node.js, NestJS | React/Next | AI
Dhaka, Bangladesh - 11:37 am local time
⭐ The job isn't complete until my client is satisfied! I work hard to earn the best feedback from my clients. If you are looking for a reliable software developer who values quality, communication, and long-term success, feel free to review my profile and reach out.
I am a Full Stack SaaS Developer with 5+ years of experience building secure, scalable SaaS products and web applications. As a Full Stack SaaS Developer, I turn ideas into high-performance web applications built for real business workflows. My experience as a Full Stack SaaS Developer ensures you get clean, maintainable systems designed for long-term growth.
For robust backend systems, my core strength as a Laravel, Node.js, NestJS developer ensures unmatched stability and speed. I use Laravel, Node.js, NestJS alongside PHP and Express.js to engineer fast microservices and RESTful APIs. This strong combination of Laravel, Node.js, NestJS prevents technical debt and keeps core database architectures optimized.
On the Frontend, I leverage React/Next to build fast, highly interactive & responsive user interfaces. Using React/Next (React.js, TypeScript), I focus on hybrid rendering, clean state management, and asset optimization. A solid implementation of React/Next ensures pixel-perfect frontends & outstanding user experiences across all devices.
My technical stack also includes hands-on experience with MySQL, PostgreSQL, MongoDB, Redis, AWS, Azure, and Docker infrastructure. I also specialize in AI Integration to automate workflows & enhance user experiences. My focus is on practical AI Integration that delivers real business value. Through custom AI Integration, I smoothly bring your MVP or SaaS platform into production.
✔️ Over 5 years of experience
✔️ Clean communication & high-quality, on-time delivery
✔️ Built 40+ web applications & SaaS products since 2020
🎯 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗕𝗨𝗜𝗟𝗗
✅ SaaS Platforms & Multi-Tenant Applications
✅ Startup MVP Development
✅ Custom Web Applications
✅ Backend Development & System Architecture
✅ RESTful API Development & Integrations
✅ Microservices Architecture
✅ Cloud-Based Applications
⚙️ 𝗧𝗘𝗖𝗛 𝗦𝗧𝗔𝗖𝗞
📌 𝙁𝙧𝙤𝙣𝙩𝙚𝙣𝙙
✔️ React.js
✔️ Next.js
✔️ JavaScript
✔️ TypeScript
✔️ HTML5
✔️ CSS3
✔️ Tailwind CSS
📌 𝘽𝙖𝙘𝙠𝙚𝙣𝙙
✔️ PHP
✔️ Laravel
✔️ Node.js
✔️ Express.js
✔️ NestJS
📌 𝘿𝙖𝙩𝙖𝙗𝙖𝙨𝙚𝙨
✔️ MySQL
✔️ PostgreSQL
✔️ MongoDB
✔️ Redis
📌 𝘾𝙡𝙤𝙪𝙙 & 𝙄𝙣𝙛𝙧𝙪𝙘𝙩𝙪𝙧𝙚
✔️ AWS
✔️ Azure
✔️ Linux VPS
✔️ Docker
✔️ CI/CD
📌 𝙈𝙤𝙙𝙚𝙧𝙣 𝙏𝙤𝙤𝙡𝙨
✔️ Supabase
✔️ Lovable.dev
✔️ Git
✔️ GitHub
✔️ Bitbucket
💼 𝗪𝗛𝗬 𝗖𝗟𝗜𝗘𝗡𝗧𝗦 𝗪𝗢𝗥𝗞 𝗪𝗜𝗧𝗛 𝗠𝗘
✔ Strong backend expertise
✔ Full-stack ownership from planning to deployment
✔ Clean, maintainable, and scalable code
✔ Performance-focused development
✔ Clear communication and transparency
✔ Long-term product mindset
✔ Reliable delivery and support
As a Full Stack SaaS Developer, I understand that successful software is more than code. It should solve business problems, improve operations, and create a great experience for users.
🚀 𝗣𝗥𝗢𝗝𝗘𝗖𝗧 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘
As a Full Stack SaaS Developer, I have worked on:
✅ SaaS Platforms
✅ POS Systems
✅ Subscription Management Systems
✅ Dropshipping Platforms
✅ Internal Business Tools
✅ CRM Applications
✅ Workflow Automation Systems
✅ API-Driven Platforms
✅ Multi-Tenant Applications
✅ Microservice-Based Solutions
My experience as a Full Stack SaaS Developer allows me to work across the entire software lifecycle, from requirements gathering and architecture design to development, deployment, optimization, and scaling.
📈 𝗪𝗛𝗔𝗧 𝗬𝗢𝗨 𝗖𝗔𝗡 𝗘𝗫𝗣𝗘𝗖𝗧
When you hire me as your Full Stack SaaS Developer, you get:
✔ Reliable communication
✔ Clean and scalable architecture
✔ Professional development practices
✔ Fast issue resolution
✔ Production-ready software
✔ Long-term technical partnership
If you need a reliable Full Stack SaaS Developer to build SaaS products, scalable web apps, backend architectures, or complex API integrations, let's discuss your project. As a Full Stack SaaS Developer, I focus on delivering stable software that scales seamlessly as your business grows.
Combining my expertise in Laravel, Node.js, NestJS backends, responsive React/Next frontends, and smart AI Integration, I take full technical ownership of your lifecycle.
Let's bring your vision to life!
Full Stack SaaS Developer | Full Stack Developer | SaaS Developer | Laravel Developer | Node.js Developer | NestJS Developer | React Developer | Next.js Developer | Backend Developer | Web Application Developer | AI Integration | REST API Development | Microservices| Custom Software Developer | SaaS Platform Developer | MVP Development | React.js Developer
Steps for completing your project
After purchasing the project, send requirements so Md. Moinul can start the project.
Delivery time starts when Md. Moinul receives requirements from you.
Md. Moinul works on your project following the steps below.
Revisions may occur after the delivery date.
Issue Diagnosis & Code Audit
Analyzing error logs, reproducing bugs, profiling query performance, and identifying bottlenecks.
Debugging, Refactoring & Patching
Writing clean, optimized fixes, refactoring complex methods, and applying database indexing or caching.