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⭐ 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 ⭐ 𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗘𝘅𝗽𝗲𝗿𝘁 ⭐ 42+ 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝘀 I design and develop end-to-end 𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 solutions powered by 𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝗣𝗜 (Meta Cloud API) — including Meta verification, 𝗰𝗵𝗮𝘁𝗯𝗼𝘁 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁, bulk messaging systems, 𝗖𝗥𝗠 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀, and custom marketing platforms. Here’s how I can support your business: 💼 𝗘𝗻𝗱-𝘁𝗼-𝗘𝗻𝗱 𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 • WhatsApp Business API Setup & Configuration • Meta Business Verification & WhatsApp Account Approval • WhatsApp API Consultation & Onboarding Support • WhatsApp Broadcast Messaging & Bulk Campaign Setup • WhatsApp Business Account Setup & Troubleshooting • Custom WhatsApp Marketing Software Development (Like WATI / Interakt) • AI Chatbot Development for WhatsApp • Automated Lead Capture & Follow-up Workflows • WhatsApp CRM Integration (HubSpot, Zoho, Custom CRM, etc.) • WhatsApp Flow Development & Interactive Messaging • **Make** + WhatsApp Automation Integration • WhatsApp Lead Management (Auto-save to Google Sheets / Email Notifications) • WhatsApp Business API Setup & Configuration with 𝗠𝗮𝗻𝘆𝗰𝗵𝗮𝘁 and create AI/manual chatbot flow 🛠️ 𝗖𝘂𝘀𝘁𝗼𝗺 𝗪𝗲𝗯 & 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: • 𝗘𝗻𝗱-𝘁𝗼-𝗘𝗻𝗱 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 – Figma → React/Next.js, Node.js + SQL/NoSQL, AWS/Digital Ocean, payments, real-time features, automations • 𝗔𝗣𝗜 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 – Meta Cloud API, HubSpot, Google (Sheets, Maps, SSO), AI (OpenAI GPT-4/5) • 𝗔𝘂𝘁𝗵 & 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 – Google/Facebook SSO, JWT, OTP, QR • 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 – Agenda job scheduling, SendGrid emails • 𝗥𝗲𝗮𝗹-𝗧𝗶𝗺𝗲 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 – WebSockets, Firebase, Twilio • 𝗣𝗿𝗼𝗱𝘂𝗰𝘁 𝗠𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 – Bug fixes & performance upgrades 🛠️ 𝗦𝗸𝗶𝗹𝗹𝘀 & 𝗧𝗲𝗰𝗵 𝗙𝗿𝗼𝗻𝘁-𝗘𝗻𝗱: React, Next.js, TypeScript, JavaScript (ES6+) 𝗨𝗜: Tailwind, Material UI, Framer Motion, shadcn 𝗕𝗮𝗰𝗸-𝗘𝗻𝗱: Node.js, Express.js (REST & GraphQL), Prisma, Sequelize 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲: PostgreSQL, MySQL, MongoDB, Redis 𝗠𝗼𝗯𝗶𝗹𝗲: React Native (Expo & CLI) 𝗖𝗹𝗼𝘂𝗱: AWS (EC2, S3, RDS, Lambda), Digital Ocean, CI/CD 𝗧𝗼𝗼𝗹𝘀: Git, Jira, Slack, Trello, Notion, ClickUp 𝗧𝗲𝘀𝘁𝗶𝗻𝗴: Mocha, unit/e2e/integration automation 𝗗𝗼𝗺𝗮𝗶𝗻𝘀: E-commerce, ERP, Healthcare, Ride-sharing, Ticketing, CRM 🤝 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 ✔ “Nadia has a strong can-do attitude and understands business logic, not only code. Highly recommend!” ✔"Nadia provides exceptional service. She combines clear technical guidance with rapid response times, ensuring a successful, error-free delivery every time." 🎯 𝗟𝗲𝘁’𝘀 𝗯𝘂𝗶𝗹𝗱 𝘆𝗼𝘂𝗿 𝗻𝗲𝘅𝘁 𝗺𝗶𝗹𝗲𝘀𝘁𝗼𝗻𝗲. 𝗕𝗼𝗼𝗸 𝗮 𝗳𝗿𝗲𝗲 𝟯𝟬-𝗺𝗶𝗻𝘂𝘁𝗲 𝗰𝗮𝗹𝗹. 🔑 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀 Meta Cloud API, Payment Integration, TypeScript, MVP Development, API Integration, Mobile App Development, API, WhatsApp Bot Developer, Automation Developer, integration, WhatsApp Business API, WhatsApp Automation, WhatsApp Chatbot, NodeJs, JavaScript

I help businesses and startups integrate APIs, build robust backend systems, and deliver internal tools that just work — fast and reliable. Whether it’s custom web apps, legacy system upgrades, or low-code solutions, I solve backend and database challenges so you don’t have to worry about the technical details. I specialize in PHP backend development, API integration, and building dashboards & internal tools using Retool and Xano. I also work with the Bubble visual development platform for fast MVPs and have extensive database experience including MySQL, PostgreSQL, Firebase, and Parse. Additionally, I have expertise with large-scale directory platforms, including Brilliant Directories and eDirectory, as well as complex legacy system modernization. Recent projects and impact: Completed a Retool internal tool project on Upwork with excellent client feedback, integrating multiple APIs and databases to streamline the client’s workflow. Built large-scale platforms including directories, food delivery apps, cleaning platforms, and game backends. I can start immediately and help deliver your project efficiently, securely, and at scale. Let’s connect and get your backend, APIs, or internal tools running exactly as you need!

I help startups and businesses build smart, scalable applications using Flutter (mobile), React (web), Golang (backend), and AI integrations. Whether you need a full product built from scratch or an AI layer added to an existing system — I handle the entire stack solo, from database to deployment. ━━━━━━━━━━━━━━━━━━━━━━━━ What I build: ✔ Full mobile apps (Android & iOS) using Flutter ✔ Web apps and dashboards using React + TypeScript ✔ High-performance REST APIs using Golang (Gin/Fiber) ✔ AI-powered features — image recognition, text generation, automation, recommendations ✔ Real-time systems — chat, notifications, live updates ✔ Video-based apps — reels, streaming, editing flows ✔ Shopify apps — embedded, billing API, OAuth ✔ SaaS products — subscription billing, multi-tenancy, usage tracking, admin dashboards ━━━━━━━━━━━━━━━━━━━━━━━━ Recent projects: ▸ DescripAI — Shopify app that generates product titles, descriptions and SEO tags from a product photo using GPT-4o Vision. Built with Golang + React. Pending Shopify App Store approval. ▸ TikTok-style video app — full-screen feed, likes, comments, follows, and real-time interactions. ▸ Real-time chat system — WhatsApp-like UI with Golang WebSocket backend and push notifications. ▸ AI product description generator — image input → OpenAI Vision → structured listing output with SEO optimization. ━━━━━━━━━━━━━━━━━━━━━━━━ Tech stack: Frontend: Flutter · React · TypeScript · Tailwind CSS Backend: Golang · Gin · Fiber · REST · WebSockets Database: PostgreSQL · Redis · Firebase AI: OpenAI GPT-4o · Vision API · Groq · LLMs Mobile: Android · iOS · cross-platform DevOps: Docker · Railway · CI/CD · GitHub Actions Shopify: App Bridge · Polaris · Billing API · OAuth ━━━━━━━━━━━━━━━━━━━━━━━━ Why clients work with me: ✔ One developer for the full system — no coordination overhead, no miscommunication between teams ✔ Fast, scalable backend — Golang handles high load without breaking a sweat ✔ Clean, production-ready code — documented, tested, and built to hand off or scale ✔ AI-native — I don't just add AI as a gimmick, I design systems where AI is the core feature ✔ Honest communication — clear timelines, no surprises, no disappearing acts ━━━━━━━━━━━━━━━━━━━━━━━━ I focus on building products that are not just functional — but intelligent, scalable, and ready for real users from day one. Let's build something powerful.

I have over 16 years of professional software development experience, including 5 years of hands-on experience with Oracle FLEXCUBE Core Banking (CBS). Throughout my career, I have designed, developed, enhanced, and maintained enterprise applications for banking and business domains using Microsoft technologies, Oracle databases, and cloud platforms. My core expertise includes: * Oracle FLEXCUBE (CBS) * C#, ASP.NET, ASP.NET Core, .NET Core, Web API * Oracle PL/SQL, Microsoft SQL Server (MSSQL), MySQL, PostgreSQL * Database Migration (MSSQL ↔ MySQL, Oracle ↔ MSSQL, data migration, schema conversion, ETL, and data validation) * Database Administration (DBA) activities, including database installation, backup & recovery, performance tuning, indexing, query optimization, user/security management, monitoring, and maintenance * Java, Entity Framework, Dapper * Angular, JavaScript, HTML, CSS, jQuery * AWS and Azure Cloud * SSRS, Crystal Reports * Git, TFS, Bitbucket, Jira, and Agile development What I can bring to your project: * Clean, scalable, and maintainable code * Strong database design, administration, and performance optimization * Database migration between MSSQL, MySQL, Oracle, and PostgreSQL with minimal downtime and data integrity * Experience integrating APIs and enterprise systems * Fast issue diagnosis and reliable bug fixing * Clear communication and on-time delivery * Ability to work independently or collaborate effectively with your team Having worked as a Senior Developer and Team Lead, I understand both the technical and business aspects of software development. Whether you need a new application, enhancements to an existing system, database migration, database administration, performance tuning, or long-term development support, I can deliver high-quality solutions that align with your business goals. I would be happy to discuss your project in more detail and recommend the most effective approach. I am available to start immediately and look forward to contributing to your project’s success. Thank you for taking the time to read my profile. I hope to speak with you soon! If you’re looking for high-quality work, fast turnaround, and reliable technical expertise at a fair price, please don’t hesitate to contact me.

Looking for a super expert, reliable PHP/Laravel developer to build, fix, or scale your web application efficiently? I'm a full-stack PHP & Laravel specialist with 8+ years of professional experience, helping startups and enterprises worldwide develop secure, high-performance web applications, APIs, and e-commerce platforms. CORE EXPERTISE ──────────────────────────────────────────── - Custom PHP application development - Laravel & modern PHP frameworks - RESTful API development & integration - Database design & optimization (MySQL, PostgreSQL, NoSQL) - Frontend development (React, Vue.js) - Third-party API & web service integration - Performance tuning & code optimisation - Version control systems (Git, GitHub, GitLab) PROVEN TRACK RECORD ──────────────────────────────────────────── HIGH-LOAD SYSTEMS Built backend infrastructure for EdTech platform handling: → 500K async jobs per week → Single-server architecture designed to scale effortlessly TECHNOLOGY STACK - Message Queues: RabbitMQ, Redis - Databases: MySQL, PostgreSQL, MongoDB, Redis - Web Servers: Nginx, Apache - Cloud Storage: AWS S3, Minio - Payment Gateways: Stripe, PayPal, Authorize.net - Communications: Firebase, AWS SES, SendGrid MY APPROACH ──────────────────────────────────────────── I don't just write code; I solve problems and help drive product growth. ✓ Highly organized and proactive communication ✓ Fast learner who takes ownership of work ✓ Focus on clean, scalable, maintainable solutions ✓ Deliver accurate, on-time, production-ready code ✓ Strong emphasis on security and performance LET'S WORK TOGETHER ──────────────────────────────────────────── Whether you need to: → Build a new application from scratch → Improve existing system performance → Fix critical bugs or technical debt → Support your development team Please send me a message and discuss how I can help your project succeed.

Manual & Automation QA Engineer | Web, Mobile (iOS, Android) & API Testing | Bug Reporting, Test Documentations Expert Hi! I’m Himani Das, a dedicated and detail-oriented Software QA Engineer with hands-on experience in both manual and automated testing. I specialize in identifying bugs, improving user experiences, and ensuring software works perfectly before it reaches your customers. What I Do Best: - Functional & UI Testing for websites and mobile apps - Writing and executing test cases from requirements - Bug reporting with screenshots/videos and clear documentation - API Testing using Postman - Automation Testing using WebdriverIO, Playwright and JavaScript - Tools: GitHub, Excel/Google Sheets, ScreenToGif, Allure Report, Jam Recorder Why Clients Work With Me: - I deliver accurate and structured test documentation - I communicate clearly and meet deadlines - I work as a reliable team player or independent tester Whether you need help launching a new feature or testing your whole app, I’m ready to make sure your product is bug-free and user-ready. Let’s connect and make your software better.