Full-Stack Developer and Technical Project Manager with 4+ years of professional experience delivering web development and eCommerce projects for international clients. Currently working with Loud Spectrum (California, USA) where I manage end-to-end project lifecycles — from client onboarding and requirement gathering to delivery — while also serving as WordPress/WooCommerce developer for high-traffic platforms.
My technical stack spans PHP/Laravel, React.js, Next.js, WordPress, WooCommerce, Python, MySQL, and MongoDB. I've built and deployed full systems including HR Management Systems, note management platforms, and eCommerce stores.
Alongside my industry work, I'm an MSc CSE student (MIST) and active ML researcher with two IEEE-published papers and three manuscripts under review covering Federated Learning, Explainable AI (XAI), Intrusion Detection, and Disaster Prediction. I graduated BSc with Summa Cum Laude honours (CGPA 3.96/4.00).
What I bring to every project:
✔ Strong project management with ClickUp-based workflows
✔ Clean, scalable code with attention to performance
✔ Clear communication and reliable delivery for remote clients
✔ 5-star Upwork track record across all completed contracts
PHP
Web Development
JavaScript
Laravel
Python
React
MySQL
WordPress
Machine Learning
Data Management
Web Design
Software QA
Software Consultation
Software Testing
Software Design
Website Audit
Website Content
Content Research
Product Research
Competitor Research
Huffas A.
Dhaka, Bangladesh
$20/hr
4.5
47 jobs
Need an experienced PHP developer to fix, extend, or modernize an existing application without disrupting current users?
I am a Senior PHP Developer with 15+ years of web development experience and 7,500+ hours completed on Upwork.
My strongest foundation is Core PHP and custom application development. This allows me to understand complex codebases and adapt quickly to different PHP frameworks, CMS platforms, and custom-built systems. I have extensive experience with Laravel, CodeIgniter, Symfony, WordPress, custom plugins, MySQL, and legacy PHP applications.
Since December 2022, I have also worked extensively with React, Next.js, Node.js, NestJS, and TypeScript on a large production SaaS platform. This allows me to maintain an existing PHP application while also helping clients modernize it gradually with modern technologies.
I can help you with:
• Core PHP and custom PHP application development
• Laravel, CodeIgniter, and Symfony development
• WordPress customization and plugin development
• Debugging and improving existing PHP systems
• React and Next.js dashboards, forms, tables, and portals
• Node.js and NestJS REST API development
• Third-party API and payment integrations
• Stripe subscriptions, webhooks, invoices, coupons, and upgrades
• MySQL and MongoDB database development
• Authentication, roles, permissions, and audit logs
• Legacy PHP modernization and system migration
• Production bug fixing and performance improvement
• Linux server deployment using Nginx and PM2
My recent work includes developing and maintaining a production SaaS platform with subscription billing, user permissions, client management, forms, files, notifications, audit logs, and complex business workflows.
I am comfortable entering an existing codebase, understanding how it works, identifying the real problem, and making safe changes without breaking current functionality. I communicate clearly, provide honest progress updates, and remain available for follow-up support.
Please share your current technology stack, the issue you are facing, and the result you need. I will review the requirements and recommend the safest practical solution.
This version is ready to use. It clearly presents PHP as your proven main strength and React, Next.js, Node.js, and NestJS as your modernization advantage.
PHP
API Integration
Custom PHP
Core PHP
Laravel
CodeIgniter
Symfony
MySQL
WordPress
API Development
RESTful API
Stripe
JavaScript
TypeScript
React
Next.js
Node.js
NestJS
Full-Stack Development
Web Application Development
Millat H.
Dhaka, Bangladesh
$15/hr
4.1
1 jobs
👋 Hi, I’m Millat Hussain – Your Trusted Full Stack Web Developer
With 5+ years of hands-on experience, I specialize in building high-performance, secure, and scalable web applications tailored to your business needs. Whether it’s custom software, API development, or bug fixes, I deliver fast, efficient, and high-quality solutions with a focus on clean code, security, and performance optimization.
💼 What I Bring to Your Project:
✔ Full-Stack Expertise: PHP (Laravel, Symfony, YII, CodeIgniter), React, JavaScript/TypeScript, jQuery
✔ API Development: RESTful APIs, Finacle/Ababil API Integration, JSON/XML, Postman
✔ Database Mastery: Oracle, MySQL, PostgreSQL, SQLite, Query Optimization, ORM
✔ Frontend Development: HTML5, CSS3, Bootstrap/Tailwind, Single Page Applications (SPA)
✔ DevOps & Security: Apache/Nginx, cPanel/WHM, SSL/HTTPS, Web Security Best Practices
✔ Agile & AI-Powered Development: Scrum methodology + AI tools (ChatGPT, DeepSeek) for faster, smarter delivery
🌟 Why Work With Me?
✅ Reliable & Fast: Instant support, bug fixing, and task scheduling for smooth operations
✅ Optimized Performance: Database indexing, query optimization, and caching for speed
✅ Secure & Scalable: OOP, MVC, multi-auth systems, and API authentication
✅ Clear Communication: Regular updates, transparency, and client-focused collaboration
📌 Recent Work Highlights:
🔹 Built banking/financial software with Finacle & Ababil API integration
🔹 Developed high-traffic web apps with React + Laravel/Symfony
🔹 Optimized slow databases, improving performance by 300%+
🔹 Fixed critical bugs and provided 24/7 support for urgent issues
🚀 Let’s Build Something Amazing Together!
I’m not just a developer—I’m your long-term tech partner committed to your success. Whether you need a new project, API, or urgent fixes, I’m here to deliver fast, clean, and future-proof solutions.
📩 Invite me to your project, and let’s discuss how I can help!
PHP
Web Application
Laravel
MySQL
JavaScript
HTML
CSS
Bootstrap
jQuery
CodeIgniter
Oracle
Web Development
Web API
API Development
Software Development
Md Saiful I.
Dhaka, Bangladesh
$5/hr
5.0
2 jobs
Md Saiful Islam
Experienced Web Developer (Laravel, Codeigniter)
Overview:
I am a dedicated and experienced web developer with a strong passion for crafting clean and efficient code. With over 4+ years of professional experience in the industry, I have honed my skills in web development to deliver high-quality websites and web applications that not only meet but exceed my client's expectations.
Key Skills:
Front-end Development (HTML, CSS, JavaScript)
Responsive Web Design
Back-end Development (Laravel, Codeigniter)
Database Management (MySQL)
CMS (WordPress)
E-commerce Development
Version Control (Git)
Problem-solving and Troubleshooting
Why Choose Me:
Expertise: I have a strong command of the latest web development technologies and trends, ensuring that your project is built using cutting-edge solutions.
Reliability: I pride myself on delivering projects on time and within budget while maintaining the highest quality standards.
Communication: I believe in open and transparent communication. I will keep you updated throughout the project's lifecycle and am always available to address your questions and concerns.
Collaboration: I value collaboration and believe in working closely with my clients to understand their goals and vision, turning ideas into reality.
Attention to Detail: I pay meticulous attention to detail, ensuring that every aspect of your website is polished and error-free.
Github: saifulislam07 (project now public)
PHP
Custom PHP
PHP Script
Laravel
CodeIgniter
AJAX
jQuery
MySQL
CSS
HTML
API Development
API
Masud R.
Dhaka, Bangladesh
$7/hr
5.0
2 jobs
🟢 𝑨𝒗𝒂𝒊𝒍𝒂𝒃𝒍𝒆 🏆 𝑭𝒖𝒍𝒍 𝑺𝒕𝒂𝒄𝒌 & 𝑨𝑰 𝑬𝒏𝒈𝒊𝒏𝒆𝒆𝒓 🏆 𝑨𝑰 𝑺𝒂𝒂𝑺 𝑨𝒓𝒄𝒉𝒊𝒕𝒆𝒄𝒕 🏆 𝑳𝒂𝒓𝒂𝒗𝒆𝒍 & 𝑹𝒆𝒂𝒄𝒕 𝑬𝒙𝒑𝒆𝒓𝒕 🏆 𝑵𝒐𝒅𝒆.𝒋𝒔 & 𝑨𝑷𝑰 𝑺𝒑𝒆𝒄𝒊𝒂𝒍𝒊𝒔𝒕 🏆 𝑳𝑳𝑴 & 𝑨𝑰 𝑨𝒈𝒆𝒏𝒕 𝑫𝒆
# Senior Full Stack & AI Engineer | AI SaaS Architect | Laravel | React | Node.js | LLM | AI Agents | Mobile Apps
I'm a **Senior Full Stack & AI Engineer** with **20+ years of IT and software development experience**, helping startups, agencies, and enterprises transform ideas into secure, scalable, and AI-powered digital products.
I specialize in building **custom SaaS platforms, enterprise applications, AI solutions, marketplaces, CRM/ERP systems, education platforms, mobile apps, and workflow automation** using modern technologies and clean architecture.
### What I Can Build
• AI-Powered SaaS Platforms
• Enterprise Web Applications
• CRM & ERP Systems
• Multi-Vendor Marketplaces
• Learning Management Systems (LMS)
• AI Chatbots & AI Agents
• Business Automation Tools
• Admin Dashboards & Customer Portals
• Booking & Subscription Platforms
• Mobile Applications (Android & iOS)
### Core Technologies
**Frontend:** React.js, Next.js, TypeScript, JavaScript, Tailwind CSS, HTML5, CSS3
**Backend:** Laravel, PHP, Node.js, Express.js, NestJS, Python, FastAPI
**Databases:** MySQL, PostgreSQL, MongoDB, Redis
**AI:** OpenAI, Claude, Gemini, AI Agents, LLM Integration, MCP, LangChain, RAG, Workflow Automation
**Cloud & DevOps:** Docker, AWS, Azure, Google Cloud, Linux, CI/CD, GitHub
### My Expertise
✔ Full Stack Web Development
✔ AI Application Development
✔ SaaS Architecture & Multi-Tenant Systems
✔ REST API & GraphQL Development
✔ Third-Party API Integrations
✔ Payment Gateway Integration
✔ Authentication & Security
✔ Cloud Deployment & Server Management
✔ Performance Optimization
✔ Database Design & Optimization
### Industries
• SaaS & Startups
• AI & Automation
• Education (EdTech)
• E-Commerce & Marketplaces
• CRM & ERP
• Business Management Systems
• Internal Enterprise Tools
### My Development Process
1. Requirement Analysis
2. System Architecture & Planning
3. Agile Development
4. Testing & Quality Assurance
5. Deployment & Cloud Setup
6. Long-Term Maintenance & Support
### Why Work With Me?
✔ 20+ Years of Professional IT Experience
✔ End-to-End Product Development
✔ Business-Oriented Solution Design
✔ Clean, Scalable & Maintainable Code
✔ AI + Full Stack Expertise
✔ Transparent Communication
✔ Reliable Delivery & Long-Term Partnership
I don't just develop software—I build scalable products that help businesses grow. Whether you need an MVP, a modern SaaS platform, AI-powered automation, or a complete enterprise solution, I can help you deliver a reliable, future-ready product from concept to production.
### Recent Projects
* SunPTE – AI-powered PTE & IELTS platform
* Happilion Bangladesh – Multi-vendor eCommerce marketplace
* Monitor.net – Business platform
* Educas – Educational platform
* Happoilion – Business management platform
Whether you need a custom web application, AI-powered platform, SaaS product, marketplace, or enterprise solution, I can help bring your vision from concept to production.
Let's discuss your project and build something exceptional together.
**𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀:**
Full Stack Developer | Senior Full Stack Developer | Python Full Stack Developer | Laravel Full Stack Developer | Django Full Stack Developer | FastAPI Full Stack Developer | Flask Full Stack Developer | React Full Stack Developer | Node.js Full Stack Developer | Next.js Full Stack Developer | Vue.js Full Stack Developer | Nuxt.js Developer | MERN Stack Developer | MEAN Stack Developer | PHP Full Stack Developer | Java Full Stack Developer | Spring Boot Full Stack Developer | Angular Full Stack Developer | React Native Full Stack Developer | JavaScript Full Stack Developer | AI Full Stack Developer | SaaS Full Stack Developer | Full Stack SaaS Engineer | Enterprise Web Application Developer | Web Application Developer | Backend Developer | Frontend Developer | Laravel PHP Developer | Laravel Developer | Laravel SaaS Developer | Python Developer | Python SaaS Developer | Django Developer | FastAPI Developer | Flask Developer | React.js Developer | React.js Frontend Developer | Next.js React Developer | Node.js Developer | Node.js Backend Developer | TypeScript Developer | JavaScript Developer | AI SaaS Developer | SaaS Application Development | Multi-Tenant SaaS Developer | OpenAI Integration Expert | Workflow Automation Developer | AI Automation Developer | REST API Full Stack Developer | REST APIs | GraphQL Developer | API Integration Developer | WebSocket Developer | Microservices Developer | Event-Driven Architecture | Kafka Developer | RabbitMQ Developer | Celery Developer | PostgreSQL Developer | MySQL Developer | MongoDB Developer | Redis Developer | Docker Developer | Kubernetes Developer | AWS Full Stack Developer | Azure Full Stack Developer | Google Cloud Develope
PHP
Laravel
Android App Development
Rapid Application Development
Flutter
Python
Node.js
Django Stack
React
Next.js
Vue.js
Angular
Claude
Web Application Development
AI Model Development
SaaS Development
AI Chatbot
Mobile App Development
AI Implementation
Hybrid App Development
Zahid H.
Dhaka, Bangladesh
$18/hr
4.9
36 jobs
Is your PHP app slow, stuck on an old version, or running on a badly configured server? I fix exactly that, and build new systems that don't break down the road.
I'm Zahid, a Laravel & Symfony specialist with 5+ years of experience delivering backend systems for SaaS platforms, government organizations, and international businesses. I don't just write code, I solve the real problems behind your technical requirements. 🚀
𝗪𝗵𝗮𝘁 𝗜 𝗦𝗼𝗹𝘃𝗲 𝗙𝗼𝗿 𝗬𝗼𝘂
🔹 Fix slow applications
I identify real bottlenecks, inefficient queries, N+1 issues, missing indexes, poor caching, and improve performance with measurable results.
🔹 Optimize & migrate databases
I restructure poorly designed databases, tune slow queries, add proper indexing, and handle full data migrations, across MySQL, PostgreSQL, and Oracle, with zero data loss and full integrity checks.
🔹 Upgrade legacy systems
Safe upgrades from PHP 5.x / 7.x → 8.x, Laravel and Symfony upgrades with full compatibility and minimal downtime.
🔹 Build scalable backend systems
SaaS platforms, REST APIs, real-time features (WebSockets), and complex business logic designed to scale.
🔹 Integrate payment gateways
I implement secure, reliable payment flows using Stripe, PayPal, Mope payments, and other regional or custom gateways — subscription billing, one-time payments, marketplace payouts, and refund handling all covered.
🔹 Solve server & deployment issues
Proper VPS setup, Nginx/Apache configuration, SSL, security hardening, and production stability.
🔹 Clean up messy codebases
Refactoring legacy systems into maintainable, structured, and developer-friendly code.
𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀
🔹 Laravel & Symfony Development — SaaS, multi-tenant apps, REST APIs, WebSockets, queues, admin panels.
🔹 PHP & Framework Upgrades — PHP 5/7 → 8.x, Laravel 5–12, Symfony version upgrade.
🔹 Wordpress — Wordpress development, Wordpress bugs fix, Wordpress upgrade.
🔹 Legacy PHP Modernization — refactoring, security patching, technical debt reduction.
🔹 API & Third-Party Integration — REST APIs, webhooks, Twilio, and custom service connections.
🔹 Performance Optimization — query tuning, Redis/Memcached caching, N+1 fixes, code refactoring.
🔹 Database Optimization & Migration — schema redesign, indexing, query optimization, cross-platform data migration (MySQL, PostgreSQL, Oracle)
🔹 Payment Gateway Integration — Stripe, PayPal, Mope payment, subscription billing, marketplace payouts, webhook handling.
🔹 VPS & Server Setup — cPanel, WHM, Nginx, Apache, SSL, DNS, mail server, firewall configuration.
🔹 Server & Hosting Migration — zero-downtime transfers, database migration, DNS cutover.
𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲
🔹 Code + Server — One Person
I own both the application and the infrastructure it runs on. No gaps between your developer and your sysadmin.
🔹 Government & Enterprise Delivered
I've built production systems for government organizations and national enterprises, where reliability, security, and accountability are non-negotiable.
🔹 Performance You Can Measure
I don't just say "it's faster." I give you real numbers, query times, page load speeds, server response metrics, before and after.
🔹 Long-Term Code Quality
Clean architecture, SOLID principles, and full documentation so any developer can maintain what I build.
🔹 Global Availability
Flexible hours covering US, European, and Middle Eastern time zones.
𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸
🔹 Backend: PHP, Laravel, Symfony, CodeIgniter, REST APIs, WebSockets, Cron Jobs, Queue Workers, Eloquent ORM, Doctrine ORM, JWT Authentication, Mail Integration
🔹 Database: MySQL, PostgreSQL, Oracle DB, SQL, Database Optimization, Database Migration
🔹 Server: VPS, Dedicated Server, Shared Hosting, cPanel, WHM, Plesk, CyberPanel, DirectAdmin, Nginx, Apache, OpenLiteSpeed, Linux (Ubuntu, CentOS, Debian, AlmaLinux), Windows Server, Docker, CI/CD, GitHub Actions
🔹 Frontend: React.js, Next.js, Vue.js, JavaScript, Tailwind CSS, Bootstrap, base44
🔹 API & Third-Party: Payment Gateway Integration, SMS Gateway Integration, Chatbot, Geo-Location APIs, Twillo APIs.
🔹 CMS & E-commerce: WordPress, Wordpress Theme, Wordpress Plugin, Shopware, Grav CMS
Tell me your situation, slow app, broken server, outdated codebase, or a new build. I'll give you a clear plan, honest timeline, and get it done right.
PHP
API Integration
Laravel
Symfony
API Development
CodeIgniter
Database Optimization
MySQL
PostgreSQL
Data Migration
Virtual Private Server
cPanel
Linux System Administration
Docker
SaaS Development
Payment Gateway Integration
Websockets
WordPress
React
Next.js
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