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✅ Meta App Approvals — Guaranteed. Or You Don't Pay. While others guess their way through Meta's review process, I've spent 10+ years engineering the systems behind it. I don't just get approvals. I build the products that need them. 📊 The Numbers: 🏆 260+ Projects Completed 💰 $200K+ Earned on Upwork ⭐ Top Rated Plus | Top 3% Globally | 5-Star Rated 🚀 60+ Apps Approved in the last 6 Months 🔐 400+ Permissions Secured 🛠️ 30+ SaaS Products Built from scratch on Meta APIs Most freelancers submit your app with hope but I know exactly what Meta's reviewers want because I've been in this ecosystem since before most developers knew the API existed. 🎯 You bring the vision. I'll bring the build and the badge. 🚫 Rejected by Meta? I fix that fast. If you're hitting the "Invalid Screencast" wall or stuck in an endless rejection loop, you're not alone and you're in the right place. I've rescued hundreds of clients from exactly this situation. I handle everything, I record the screencast myself, prepare the full submission, and manage direct communication with Meta's review team until you're approved. Most clients get the green light in 1–10 business days. Meta & Social Platform Approvals: ✅ Meta App Reviews or API Permission Approvals Expert ✅ Facebook App Review Expert ( Facebook Pages & Instagram & Ads & Threads) API Permissions Approval for Advanced Access ✅ Facebook API permissions Approval Expert ✅ Instagram API Permissions Approval Expert ✅ Meta Marketing / Ads API Permissions Approval Expert ✅ Threads API Permissions Approval Expert ✅ Expert Facebook/Instagram/Telegram/WhatsApp Chatbot Developer ✅ Expert in API integration ✅ Expert Facebook API Developer ✅ Expert Instagram API Developer ✅ Facebook Tech Provider/ Access Verification Expert ✅ Facebook Business Account Verification Consultant ✅ Meta App Data Deletion Request Callback Implementation ✅ TikTok Marketing Developer App Approval Expert ✅ TikTok Developer API App Approval Expert ✅ Expert in Marketing Automation Software ✅ Expert in WordPress Plugin Development ✅ Worked with PHP Script and SaaS selling company Codecanyon, Jvzoo, Warrior+Plus. ⭐ Why clients come back: I don't hand you a checklist and disappear. I'm in the trenches with you — writing, recording, submitting, and negotiating — until Meta says yes. 𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗔𝗣𝗜 (𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗟𝗼𝗴𝗶𝗻) instagram_business_basic, instagram_business_manage_comments, instagram_business_manage_messages, instagram_business_manage_insights 𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 𝗔𝗣𝗜 𝗣𝗲𝗿𝗺𝗶𝘀𝘀𝗶𝗼𝗻𝘀 pages_read_user_content, pages_manage_posts, pages_show_list, pages_manage_metadata, pages_user_locale, pages_user_gender, pages_manage_engagement, pages_messaging, read_insights, pages_read_engagement, pages_user_timezone, Business Asset User Profile Access 𝗜𝗻𝘀𝘁𝗮𝗴𝗿𝗮𝗺 𝗚𝗿𝗮𝗽𝗵 𝗔𝗣𝗜 (𝗙𝗮𝗰𝗲𝗯𝗼𝗼𝗸 𝗟𝗼𝗴𝗶𝗻) instagram_basic, instagram_content_publish, instagram_manage_comments, instagram_manage_messages, instagram_manage_insights, Instagram Public Content Access, Human Agent, instagram_branded_content_ads_brand, instagram_branded_content_brand 𝗠𝗲𝘁𝗮 𝗠𝗮𝗿𝗸𝗲𝘁𝗶𝗻𝗴 / 𝗔𝗱𝘀 𝗔𝗣𝗜 business_management, ads_read, ads_management, pages_manage_ads, leads_retrieval, catalog_management 𝗧𝗵𝗿𝗲𝗮𝗱𝘀 𝗔𝗣𝗜 threads_basic, threads_content_publish, threads_keyword_search, threads_manage_insights, threads_manage_mentions, threads_manage_replies, threads_read_replies 𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝗣𝗜 whatsapp_business_messaging, whatsapp_business_management 🛠️ What I Do: I specialized in Meta API development and social media SaaS products — from Facebook Graph, Marketing, and Messenger APIs to Instagram (Graph, Business), WhatsApp Business & Cloud API, Threads, Twitter/X v2, Pinterest, Reddit, Shopify, integrations. I also handle Webhook, IPN, and Cron Job setups end to end. SaaS Products I've Built: Instagram Comment & DM Automation, Facebook Ads Creation Portals, Social Media Posting Platforms, AI Chatbots powered by OpenAI & ChatGPT for Messenger and Instagram, CRM Dashboards, and Marketing Automation Software. I've worked with ChatPion, Stackposts, and ChatWoot. Any white-label social media tool — I've seen it and can get it approved. ⚙️ Tech Stack: JavaScript (TypeScript,React,Next.js,Node.js, Express, Vue), Python, PHP (Laravel, CodeIgniter), MySQL, PostgreSQL,MongoDB,Redis,AWS,Git 💬 What Clients Say: ⭐ "Mir was an absolute game-changer. Deep understanding of Meta's API ecosystem — permissions, configurations, best practices. If you need a Meta API expert who is highly skilled and a pleasure to work with, Mir is the person to hire." — Sheila, USA ⭐ "Best guy on Upwork for API development. We already hired him on another project." — Marius, Romania ⭐ "His knowledge of FB and API integration is really deep and comprehensive. Very happy." — Fabrizio, Italy ⭐ "Anything Meta app permission related, he'll fix it for you." — Roy, USA

Need a backend that scales without breaking integrations or security? With 12+ years building SaaS backends and APIs, I’ve delivered 99.9% uptime systems and cut checkout latency from 1.2 s to 450 ms for startups and SaaS teams. I build secure, production-ready Laravel and Node.js backends with API integrations, payments, and automation. 🎯 HOW I CAN HELP YOU BACKEND SYSTEMS DEVELOPMENT Build a backend that supports growth without slowing down your product. You get a secure, scalable foundation for SaaS, MVPs, and complex business apps, with architecture proven to handle high traffic, microservices, and zero-downtime releases. API INTEGRATION Connect your product to the tools your business depends on and reduce manual work fast. I’ve delivered production integrations with Stripe, PayPal, Twilio, Shopify webhooks, and custom third-party systems, including setups that handled 10k+ calls per hour. SAAS DEVELOPMENT Turn your idea into a production-ready SaaS product that can handle real users and revenue. My work has cut checkout latency from 1.2 s to 450 ms and supported billing, subscriptions, RBAC, and multi-tenant systems built for scale. AUTHENTICATION AND SECURITY Protect your application with login and access control users can trust. I implement OAuth2, JWT, SSO, and role-based permissions for apps that need secure access across teams, tenants, or multiple products. AI API INTEGRATION Add AI features that create product value instead of experimental complexity. I integrate OpenAI, Claude, Gemini, and custom LLM workflows for smarter search, document Q&A, automation, and assistant-style experiences. 🏆 RESULTS "Great experience working with Rifatul. Professional, responsive, and delivered high-quality work on time. Communication was smooth, and he was always willing to help and make adjustments when needed. Highly recommended, and I look forward to working together again in the future." – Hamza., Client "Rifatul did a great job as a full stack developer. He built the feature using React and Next.js on the frontend and Node.js on the backend. Everything was delivered cleanly and worked perfectly. Communication was smooth and he handled both frontend and backend efficiently." – Chester R., Client "Very good at completing tasks, and to specifications. Understood what we needed immediately, and began work as soon as awarded contract. Will continue to hire this developer." – Nicholas S., Client 🏅 Software Architecture: Breaking a Monolith into Microservices 🏅 Certified Devops Engineer 🏅 Modern JavaScript: ES6 Basics See full case studies in my portfolio below. ✉️ 𝗠𝗘𝗦𝗦𝗔𝗚𝗘 𝗠𝗘 𝗢𝗡 𝗨𝗣𝗪𝗢𝗥𝗞 Have a backend, API, or SaaS project to build or improve? Message me on Upwork for a free consultation and a clear plan to move your project forward. I typically respond within 4 hours and can offer quick turnaround for urgent work. 𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸 I build backend systems in Laravel and Node.js, then connect them to REST APIs, PostgreSQL, and Stripe for secure, scalable delivery. I use TypeScript and React when full-stack work is needed, and I keep releases stable with Docker, AWS, Git, and CI/CD. I build secure backend systems in Laravel and Node.js, integrate REST API services, and deliver SaaS development with PostgreSQL and AWS for production-ready growth.

If you're dealing with millions of files, slow workflows, or systems that break under pressure, I'm the person you call. I'm Monoget — a Top Rated Python developer who specializes in automation at scale. My clients don’t hire me to write "scripts" — they hire me to build engines that handle chaos, save time, and keep working when things get big. 🔹 What I Actually Do: 🔄 Mass Automation — From crawling 2M+ records a day to processing huge batches of files with concurrency and error recovery. 🌐 Web Scraping & Data Extraction — Using rotating IPs, headless browsers, and custom logic to get data where others fail. ☁️ Cloud & API Integration — AWS (S3, Lambda), Google Sheets API, IIIF, custom REST APIs — full data pipelines, end to end. 📊 Metadata Handling — Parsing, transforming, and syncing structured data at scale. 🔹 Tools I Use (Fluently): Python (requests, asyncio, aiohttp, Selenium) AWS S3, Google Sheets API, IIIF Proxy management, VPNs, Surfshark setups Concurrency, error logging, retries, performance tuning ✅ Why Clients Keep Hiring Me: I build systems, not just code I handle scale and reliability I move fast and communicate clearly I can reverse-engineer, automate, and optimize nearly any repeatable process If you're serious about automating something painful, scaling a messy process, or getting reliable data from tough sources — let's talk. I don’t take every project. But if it’s challenging, high-impact, and you need it done right, I’m in. Kind Regards, Monoget Saha

Full Stack Web Application Developer: Laravel, Livewire, Tall Stack,Yii2, Wordpress,Marketplace API (Amazon SP-API, eBay API, Walmart API, Shopify API), NodeJS, REACT, Angular JS -I am an active programmer since year 2010 - I prefer medium and big project Skills and Technologies I am familiar with: -PHP: this is my root scripting language I am using from start to end in many project -Laravel: I have over 4 years’ experience in Laravel -Yii: I used both Yii version 1.1 & 2.0, I have over 5 years’ experience in Yii framework. I used this framework in over 50 projects -Joomla: since 2011 I am using this CMS and I have wide range of experience on this CMS -Angular JS, Node.js, REACT, Nex JS, JQuery, JavaScript, CSS, HTML5,Bootstrap -MySQL: I used this Database Engines almost in my every dynamic web application I have the following Ecommerce Marketplace API integration experience 1. Amazon SP-API and MWS API 2. Walmat Marketplace API 3. eBay API 4. Shopify API 5. Etsy API 6. WooCommerce API 7. Tiktok API 8. Facebooka and Google API 9. Keepa API (amazon third party price tracker) -Data Scrapping: i have massive experience in Data scrapping with different Technology and approach - chrome extension -ERP: I am expert in this business application. In addition I have skill in developing inventory, HRM, payroll, web portal, healthcare and medical type application. Beside I am expert in developing customized Dropshipping tools with various suppliers including Lister, price and stock monitor. IDE, tools and version control system -GIT: I just love it and I used it in so many projects, it’s really cool and helpful to manage my project -Dreamweaver, phpstorm,VS Code, Photoshop, pait.net, MySQL Navicat and many others IDE and tools I used Operating system and others - Linux and Windows, Apache, Tomcat, AWS I give my 100% focus on even small details of project and try to make it perfect. My goal is to make a project successfully by keeping high quality of work with fair price. I am very easy and flexible to work. Feedback from Upwork Clients’: "Muhammad is excellent! He helped me finish three PHP projects that work great for my e-commence business. With his help, my work becomes super easy and effective. He communicates and finishes projects at an unbelievable speed. I would highly recommend him to anyone who needs some perfect work to be done! I will keep working with him in the future." I AM THE ONE YOU ARE LOOKING FOR.

Building 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 Backend Systems for SaaS, Enterprise & Business Applications💻 Need a 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻-𝗿𝗲𝗮𝗱𝘆 backend, secure APIs, or 𝘀𝗲𝗮𝗺𝗹𝗲𝘀𝘀 third-party integrations? I help 𝗦𝘁𝗮𝗿𝘁𝘂𝗽𝘀 and 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 build backend systems that are easy to scale, maintain, and deploy. As a Top Rated Backend Engineer with 2+ years of professional experience building production-ready backend systems using Node.js, FastAPI, PostgreSQL, MongoDB, Redis, Docker, and AWS. Here's how I can help: ✅ Build REST & GraphQL APIs ✅ Develop SaaS & MVP backends ✅ Integrate Stripe, OAuth, Webhooks & AI APIs ✅ Design optimized PostgreSQL & MongoDB databases ✅ Implement JWT Authentication, RBAC & MFA ✅ Debug and optimize existing backend systems ✅ Deploy applications using Docker, VPS & AWS ✅ Build scalable microservices and backend architectures I've built backend solutions for SaaS platforms, CRM/ERP systems, AI-powered applications, workflow automation, POS systems, and secure payment platforms. My focus is simple: deliver clean, maintainable, and production-ready backend solutions that help businesses scale with confidence. 📩 Have a backend challenge? Send me a message, and let's discuss the best solution for your project.

I help startups, agencies, and businesses build secure, scalable, and high-performance web applications using modern technologies and AI-assisted development workflows. With strong experience in backend engineering, API development, cloud infrastructure, and frontend frameworks, I deliver clean, maintainable solutions that are fast, reliable, and production-ready. What I Can Help You With ✅ Custom Web Application Development ✅ REST API & GraphQL Development ✅ SaaS Platforms & Business Systems ✅ AI-Assisted Development & Automation ✅ Third-Party API Integrations ✅ Performance Optimization & Security Hardening ✅ Legacy System Upgrade & Modernization ✅ Cloud Deployment & DevOps Setup Backend & Web Technologies • Laravel, Django, Spring Boot, Yii2 • Express.js, NestJS • WordPress, Drupal, Magento • PHP, Python, Java, JavaScript, TypeScript • MySQL, PostgreSQL, MongoDB, Redis Frontend Development • React.js, Vue.js • Tailwind CSS, Bootstrap • Alpine.js, Livewire, HTMX Cloud & DevOps • AWS, GCP • Docker, Kubernetes • CI/CD Pipelines • Linux, Nginx, Apache API & Integrations • Stripe, PayPal • Twilio, Firebase • Slack, Zapier, Xero • REST APIs & GraphQL AI Development Workflow I actively use modern AI development tools to improve delivery speed, code quality, debugging, and architecture planning: • Cursor • Claude • ChatGPT • GitHub Copilot Why Clients Work With Me ✔ Clean, maintainable, scalable code ✔ Fast communication & reliable delivery ✔ Strong debugging and problem-solving skills ✔ Production-ready deployment experience ✔ Security-focused development approach ✔ Ability to work independently and take ownership Whether you need a custom platform, backend API, cloud deployment, or ongoing development support, I can help turn your ideas into reliable software solutions. Let’s build something great together.