Hire the Best Google Calendar API Specialists
in Bangladesh

Hi, this is Mehebub. I'm a backend web developer, but to be honest, I proudly admit that I never mean just website creation when I say Web Development. That’s just a small, overcrowded corner of web development, in which I'm obviously an expert. But beyond that, I love automating things—not just scraping but performing specific tasks and even building automation-based APIs. I automate various messengers to send messages, create tracker bots to monitor any web data, and handle spreadsheet automation to use data and perform tasks, among other things. And when it comes to traditional development, everybody knows HTML and CSS—those don’t count! 😅 I’m skilled in PHP, Python, and JavaScript (including Node.js, TypeScript, and Google Apps Script) along with popular frameworks like React, Vue, Next, Express, and more. In my field of work, I’m known for my debugging skills; I can identify issues like a pro, ensuring my work is always precise. That’s all, I guess. No one can truly get to know someone from a profile overview. Let’s talk, discuss, and you’ll learn more about my expertise. Thanks for your interest. Bye!

𝗧𝗼𝗽-𝗥𝗮𝘁𝗲𝗱 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗘𝘅𝗽𝗲𝗿𝘁 — $50K+ Earned | 95% Job Success | 1,700+ Hours I build the automation systems that run behind your business — from Google Workspace tools to AI agents and n8n workflows — replacing manual data entry, broken spreadsheet processes, and repetitive admin work with systems that hold up under real usage. I built my track record automating Google Sheets and Workspace for growing teams — CRMs, dashboards, and reporting systems that replaced paid software entirely. I'm now extending that same engineering approach into AI agents and n8n orchestration, wiring OpenAI-driven logic directly into the workflows I already know how to build reliably. I hold Google's AI Professional Certificate and I'm actively taking on projects in this space. 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 - AI-Driven Workflows — OpenAI/GPT agents wired into backend systems and Sheets for data processing, prioritization, and reporting - Workflow Orchestration — n8n and Python microservices for multi-app automation across your stack - Google Workspace Systems — custom CRMs, sidebars, and web forms built entirely in Sheets + Apps Script: two-way sync, automated email/SMS/calendar actions, role-based dashboards - Reporting & Dashboards — Klipfolio builds pulling live data from Stripe, NetSuite, HubSpot, GA4, and Google My Business for real-time KPI tracking - API & Webhook Integrations — bi-directional sync across CRMs, e-commerce, and payment/ops tools (WooCommerce, HubSpot, Keap, Stripe, Slack) - Data Pipelines & Scraping — automated collection (Python/Playwright, Apify) feeding clean, structured databases 𝗥𝗲𝗰𝗲𝗻𝘁 𝗪𝗼𝗿𝗸 - Crypto Regulatory Intelligence Radar: Built an RSS/alert monitoring system in n8n + Google Sheets + Slack for real-time regulatory tracking. Client feedback: "highly skilled... goes above and beyond to make things better." (5.0) - AI Project Management Agent: Deployed a serverless agent (Google Apps Script + OpenAI) that analyzes Trello boards and generates prioritized "Mentor Reports" for a project team. - CRM-in-a-Sheet: Built a full client-management system inside Google Sheets with a search sidebar, two-way sync, and automated email/SMS/calendar actions — replacing a paid CRM subscription. - Live Revenue Dashboard: Connected Stripe billing data into Klipfolio to track weekly MRR, churned revenue, and cancellations. - Real-Time E-Commerce Sync: Built a live webhook bridge between WooCommerce and Google Sheets, processing orders in real time with zero manual entry. 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 Automation & AI: n8n, OpenAI API, Make, Webhooks, Docker Core: Python, JavaScript/Node.js, Google Apps Script, SQL Dashboards & Reporting: Klipfolio, Matplotlib, pandas APIs: HubSpot, Keap, WooCommerce, Stripe, Google Ads, Softr 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲 - Built inside your tools, not bolted on — no extra subscriptions, no new logins, no monthly fees eating your margin - Engineering-first approach: modular, documented, fail-safe system design — not one-off scripts - Clear, proactive communication with milestone updates, no chasing required - A track record across 48 contracts and $50K+ delivered, at a 95% Job Success Score If your operations depend on manual copy-pasting, fragile spreadsheets, or disconnected tools — or you're ready to add an AI layer on top of what you already have — send me a brief overview of the process and I'll tell you exactly how I'd automate it.

I build high-performance, scalable, and SEO-optimized websites and web applications that help businesses grow. As a Full-Stack JavaScript Developer, I specialize in building modern, secure, and production-ready platforms using Next.js, React, Node.js, Tailwind CSS and MySQL or mongoDB. From business websites to SaaS platforms, booking systems, dashboards, and eCommerce solutions. I deliver clean architecture, fast performance, and conversion-focused design. What I Can Build • Business & Corporate Websites • SaaS Applications • Booking & Reservation Systems • Admin Dashboards with RBAC • eCommerce Platforms (Stripe Integration) • Landing Pages (High Conversion) • REST API Integration • Custom Web Applications • Responsive Mobile-First UI • SEO-Optimized Websites 🛠 My Technical Stack Frontend: Next.js, React.js, JavaScript, TypeScript, Redux, Tailwind CSS, Framer Motion, GSAP Backend: Node.js, Express.js, REST API, MySQL, MongoDB Integrations & Tools: Stripe, Google Calendar API, Firebase, Brevo, Zod, Git, Vercel ✔ Production-level booking platform with Stripe payment integration ✔ RBAC-based admin dashboard with advanced filtering ✔ Real client corporate website built from Figma to pixel-perfect UI ✔ Travel platform with authentication and review system Why Clients Work With Me ✔ Clean and scalable architecture ✔ SEO & performance-focused development ✔ Mobile-first responsive design ✔ Clear communication ✔ On-time delivery ✔ Long-term support If you're looking for a reliable developer who understands both technical architecture and business goals than knock me and let's build something impactful. 📩 Send me a message and let's discuss your project.

✅ 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: 🏆 270+ 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

Top Rated Google Sheets & Excel automation specialist with 100% Job Success Score (JSS) and 8+ years of experience. I build spreadsheet-based business systems and control centers: Apps Script tools, Excel VBA macros, Power Query workflows, dashboards, CRM trackers, quote calculators, PDF/report generators, API integrations, and AI-assisted workflows your team can maintain. If your business depends on messy spreadsheets, manual reporting, copy-paste work, broken formulas, disconnected apps, or slow workflows, I can turn it into a cleaner system. ✅ 𝐒𝐘𝐒𝐓𝐄𝐌𝐒 𝐈 𝐂𝐀𝐍 𝐁𝐔𝐈𝐋𝐃 𝐆𝐨𝐨𝐠𝐥𝐞 𝐒𝐡𝐞𝐞𝐭𝐬 + 𝐀𝐩𝐩𝐬 𝐒𝐜𝐫𝐢𝐩𝐭 + 𝐆𝐨𝐨𝐠𝐥𝐞 𝐖𝐨𝐫𝐤𝐬𝐩𝐚𝐜𝐞 • Google Sheets automation with Apps Script • Custom menus, triggers, scheduled tasks, and workflow automation • Google Forms → Sheets → Docs/PDF automation • Google Drive, Gmail, Docs, Slides, and Calendar automation • Google Sheets web apps with HTML/CSS/JavaScript frontends • Spreadsheet cleanup, optimization, bug fixing, and rebuilds 𝐄𝐱𝐜𝐞𝐥 + 𝐕𝐁𝐀 + 𝐏𝐨𝐰𝐞𝐫 𝐐𝐮𝐞𝐫𝐲 • Excel VBA macros and Excel automation • Power Query reporting workflows • Excel dashboards, KPI reports, and reporting templates • Financial models, forecasting tools, budget trackers, and cash flow models • Data consolidation, formula fixes, performance optimization, and audit-ready workbooks 𝐃𝐚𝐬𝐡𝐛𝐨𝐚𝐫𝐝𝐬 + 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 • KPI dashboards and executive scorecards • Operations dashboards and business reporting systems • Google Sheets dashboards and Excel dashboards • Financial dashboards, budget trackers, and management reports • Marketing dashboards, Google Ads dashboards, Looker Studio source sheets, and performance reports • Automated daily, weekly, monthly, and client-facing reports 𝐂𝐑𝐌 + 𝐒𝐚𝐥𝐞𝐬 + 𝐎𝐩𝐞𝐫𝐚𝐭𝐢𝐨𝐧𝐬 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 • CRM systems in Google Sheets or Excel • Lead trackers, sales pipelines, follow-up trackers, and activity logs • Client databases, contact management systems, task trackers, job trackers, and project trackers • Real estate CRM, service business CRM, agency CRM, and operations trackers • Spreadsheet-based workflows connected with HubSpot, GoHighLevel, Airtable, Notion, AppSheet, and Glide 𝐐𝐮𝐨𝐭𝐞𝐬 + 𝐏𝐫𝐢𝐜𝐢𝐧𝐠 + 𝐄𝐬𝐭𝐢𝐦𝐚𝐭𝐢𝐧𝐠 • Quote calculators and pricing calculators • Estimating tools for construction, service businesses, print shops, agencies, and operations teams • Cost, margin, markup, discount, commission, and profitability calculators • Proposal, invoice, statement, and PDF quote generators 𝐀𝐏𝐈𝐬 + 𝐙𝐚𝐩𝐢𝐞𝐫 + 𝐌𝐚𝐤𝐞 + 𝐧𝟖𝐧 • API integrations and webhook automation • Zapier automation, Make automation, and n8n workflows • Google Sheets integrations with CRMs, forms, email, Slack, Drive, QuickBooks, Xero, Shopify, Stripe, Airtable, Notion, and other tools • Order automation, invoice automation, payment tracking, reconciliation, and reporting workflows 𝐃𝐚𝐭𝐚 𝐄𝐱𝐭𝐫𝐚𝐜𝐭𝐢𝐨𝐧 + 𝐑𝐞𝐜𝐨𝐧𝐜𝐢𝐥𝐢𝐚𝐭𝐢𝐨𝐧 • Data cleanup, data validation, duplicate removal, and structured reporting • PDF to Excel, bank statement extraction, transaction cleanup, and reconciliation • Web scraping, CSV cleanup, import/export workflows, and data extraction into Google Sheets or Excel 𝐀𝐈 + 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐞𝐝 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰𝐬 • AI automation using OpenAI API, ChatGPT, Claude, and Anthropic API • AI-assisted lead classification, data enrichment, summaries, Gmail workflows, and report generation • Spreadsheet-based AI workflows connected through APIs, webhooks, Zapier, Make, or n8n 📌 𝐇𝐎𝐖 𝐈 𝐖𝐎𝐑𝐊 • Clean structure first, then automation • Config-driven logic so updates are easier later • Protected ranges, validations, and controlled input areas • Error checks, audit logs, and traceable workflows • Milestone-based delivery with demos • Documentation and handover so your team can use the system after delivery 🎯 𝐑𝐄𝐂𝐄𝐍𝐓 𝐖𝐎𝐑𝐊 • Google Ads budget pacing dashboard with Apps Script alerts and multi-account reporting • Excel bid workflow automation with Power Query, VBA macros, and publish engine • Google Sheets project control web app with two-way sync, CRUD workflows, workload tracking, and reports • Financial forecasting dashboard with scenarios, cash flow, ROI, NPV, and break-even logic • Google Sheets CRM and operations web app for jobs, payments, leads, follow-ups, and activity logs • Law firm billing, Stripe reconciliation, PDF report generation, and audit-trail workflows ⚒️ 𝐂𝐎𝐑𝐄 𝐓𝐎𝐎𝐋𝐒 Google Sheets, Microsoft Excel, Google Apps Script, Excel VBA, Power Query, Microsoft 365, Google Workspace, Google Forms, Typeform, Google Docs, Drive, Gmail, Calendar, APIs, REST APIs, webhooks, Zapier, Make, n8n, QuickBooks, Xero, Shopify, Stripe, HubSpot, GoHighLevel, Airtable, Notion, AppSheet, Glide, Looker Studio, OpenAI API, Claude, Anthropic API, dashboards, CRM tools, PDF automation, data extraction, cleanup, reconciliation, and workflow au

Marketing data infrastructure engineer - I build the server-side tracking, offline conversion pipelines, and ad-platform automation that keep ad spend efficient at scale. 15 years of backend engineering behind every system. Over the last 4 years, I engineered and operated the entire ad-tech and data infrastructure for a high-spend advertiser: custom Google Ads API integrations, offline conversion pipelines feeding CRM and post-sale data back to Smart Bidding, server-side GTM, Meta CAPI, audience syncing, and performance feedback loops. Not campaign management - engineering. That's what separates me from a typical tracking specialist or ads optimizer. I don't just configure tags in a UI. I build the systems that manage, optimize, and measure ad performance programmatically - with proper architecture, error handling, monitoring, and scale. What I design and build for clients: → Server-Side Tracking & Data Layer Infrastructure: Custom sGTM setups, server-side tracking, and data-layer engineering to minimize tracking drop-offs and future-proof against cookie deprecation. → Offline Conversion Tracking (OCT) Pipelines: Piping post-sale CRM data (HubSpot, Salesforce, custom DBs) back into Google Ads and Meta to feed clean data to Smart Bidding and Advantage+. → Conversions API (CAPI) Implementation: Server-side event pipelines for Meta, TikTok, and LinkedIn - with matching quality optimization, deduplication, and integration with sGTM and CRM data. → Google Ads API Automation: Automated campaign generation, asset management, custom bid rule engines, dynamic budget pacing, real-time performance alerts, and continuous campaign optimization. → AI Workflow & Operations Automation: Automated workflows using n8n, Make, and LLM APIs (OpenAI, Claude, Gemini) to sync ad platforms with internal systems, Slack, WhatsApp, and spreadsheets. → Custom Ad-Tech SaaS Development: Full-stack development using Laravel, Next.js, React, and PostgreSQL when a bespoke platform or analytics dashboard is required. Proven Record: ✅ One client retained continuously for 4+ years ($400K+ single engagement) ✅ 24,000+ hours on Upwork, 100% Job Success Score, Top Rated Plus ✅ Recently launched AdsOptimizer Lab - my own Google Ads optimization platform