Hire the Best Web Application Developers in Khulna, BD

⚡Available Now 🟢 ⚡Open for Work 🟢 I build AI-powered SaaS products and full-stack web applications for startups and businesses using Next.js, React, Node.js, React Native and AI APIs. Let me engineer your software and I'll build it so it works for you 24/7. That's my promise. From MVP architecture to Production Deployment. I handle the full software layer — Frontend → Backend APIs → Databases → AI Integrations → Authentication → Billing → Infrastructure. Shoot me an invitation or message and I'll send you a Loom video on exactly how I'd solve your problem. • Full portfolio and case studies: mashfiq-rayhan-ovi.vercel.app Results I've delivered: → TrackPulse: 5x faster batch processing, 8 hours → 90 minutes, $220/month in infra saved. → InfoSysCS: 5 days → 18 minutes per report, 6x researcher throughput. → Flex Engineers: 4x faster lead response, 35% lift in form conversion. → MediaKing: launch time cut from 6 weeks to 9 days, 38% lift in inquiry conversion. → ApexDV: 60+ qualified leads/month, driving 35% of new client acquisition. → Hotspot Navigator: 50+ daily users, 50%+ ops overhead cut. Everything above is a live, working product — try any of them yourself (AI ones need API). Live works you can try right now: • TrackPulse : AI-Powered Audio Intelligence for audio classification and moderation. trackpulse-ai.vercel.app • InfoSysCS: AI-Powered Qualitative Data Analysis Assistant for research workflows. infosys-cs.vercel.app • Flex Engineers: A Software Studio’s Mission Control, rendered with HUD/3D visuals. flex-engineers.vercel.app • MediaKing: Media management and streaming-oriented web platform for MediaKing. mediaking-llc.vercel.app • ApexDV: Modern web application built with Next.js for ApexDV company. apex-dv.vercel.app What I do Best: → AI-powered web apps — OpenAI API, LLM Integration, AI Integrations → SaaS MVPs — multi-tenant architecture, auth, billing, admin dashboards, built founder-to-launch → Full-stack web platforms — React/Next.js + Node.js + Databases + MERN Stack → Web + mobile products — React Native alongside web when needed → API & third-party integrations — AI, payments, external services → Production systems — performance, security, Docker, deployment, scalability → Full ownership — I handle frontend, backend, and deployment; no handoffs, no gaps Primary Stack: Node.js · Express.js · React.js · Next.js · React Native · JavaScript · TypeScript · PostgreSQL· MySQL · MongoDB · Git · Docker · OpenAI API Clients on past work noted clear communication and solution-oriented problem solving — I flag risks early and explain tradeoffs in plain terms, not jargon. I don't just build screens or write isolated features. I take ownership of the complete software layer and make the technical decisions required to ship a reliable, maintainable product. If you're building an AI product, SaaS MVP or custom web application, send me the product brief. I'll tell you how I'd approach it, what I'd build first and where I'd watch for technical risk. Open to hourly contracts and fixed-price projects. ⚡Available Now🟢Message me with what you're building, I reply within 30 minutes.

Your leads come in from six places. Your CRM only knows about two of them. That gap is where deals quietly die and that's the thing I fix. I'm an automation engineer. I build the plumbing between the tools you already pay for: CRM, ad platforms, phone system, email, WhatsApp, booking pages, your website. When the handoffs run themselves, your team stops doing data entry and starts closing. What I build ✅ Python-first backend stack I build with Python and FastAPI every day, backed by PostgreSQL, Docker, async workers, and clean typed APIs. Data pipelines, LLM services, embeddings and retrieval layers, all written to run in production and tested by hand before anything ships. ✅ AI-native development stack I build with Claude Code, Cursor, Codex, Antigravity, Windsurf, and Lovable every day plus Claude, GPT, and Gemini APIs under the hood of what I ship. Rapid prototypes, agentic coding workflows, and full production builds, all reviewed and tested by hand before anything goes live ✅ Lead pipelines end to end Meta and LinkedIn Lead Ads, website forms, and booking pages deduped, enriched, and routed straight into HubSpot, GoHighLevel, or Airtable with full UTM attribution intact ✅ AI SDR and outreach systems Prospect research, personalized first touch, follow-up sequencing, reply handling, everything logged back to the CRM ✅ AI voice agents and chatbots Vapi, ElevenLabs, and Retell for bookings, intake, qualification, and 24/7 front desk coverage — with call transcripts and outcomes written back to your CRM automatically ✅ Twilio SMS, voice, and messaging systems Programmable Voice and SMS, IVR menus, call routing and forwarding, two-way SMS conversations, appointment reminders, OTP verification, and A2P 10DLC registration handled so your messages actually deliver ✅ WhatsApp Business Cloud API Multi-number inbox, template approval and fallback, 24-hour window handling, media messaging, and campaign sending — built on Meta's Cloud API directly, not a reseller wrapper ✅ RAG assistants Your site, docs, and PDFs turned into an assistant that answers using your own content (Supabase pgvector, Pinecone) ✅ n8n, Make, and custom Python workflows Webhooks, retries, idempotency, error alerting. Built to survive a bad API day, not just a demo call ✅ Phone system to CRM 3CX call journaling, click-to-call, screen pop on inbound ✅ Internal dashboards Next.js and Supabase, so you can actually see what the automation is doing Where it saves you the most money: ✅ MVPs and internal tools built in days, not months ✅ Legacy codebases documented and refactored instead of rewritten ✅ Repo-wide changes done consistently instead of file by file ✅ If you're already using Claude Code or Cursor in-house, I can set up your CLAUDE.md, project rules, and agent workflows so your own team ships faster too Recent build (B2B tech client, ongoing) An AI SDR and inbound revenue system: FastAPI backend with Celery workers on DigitalOcean, two-way HubSpot sync, LinkedIn and Meta lead webhooks, a WhatsApp campaign module, multi-inbox email sending, Cal booking capture with 10-field UTM tracking, and a live inbound dashboard. Ad click to conversation to CRM deal, with nothing typed by hand. Also strong on the web side, when your automation needs a front end: Next.js and React apps, custom WordPress themes and plugins, WooCommerce, REST API work, Core Web Vitals, multilingual and SEO-ready builds. How I work Small scope first, working system fast, then expand. Every delivery comes with documentation so your team isn't stuck depending on me. I overlap with US business hours. Start here: tell me the one process that eats the most hours in your week. I'll tell you honestly whether automating it is worth the money and if it isn't, I'll say so.

Welcome to my profile 😊 🏆I am an experienced full-stack developer with a strong focus on creating dynamic web applications using React.js for the front end and Laravel with PHP for the back end. My expertise includes: I'm specialized in: 📌Complex web applications development (frontend / backend) 📌Website development from scratch 📌API servers (Laravel, PHP, .NET, WordPress, NodeJS, Python) 📌Single Page Applications (SPA) - ReactJS, VueJS (Nuxt), Redux, Typescript 📌Microservices / distributed / cloud-based web applications (.NET, NodeJS, PHP) 📌AI & Machine Learning: NLP, GPT, Computer Vision, Keras, PyTorch, TensorFlow, OpenCV 📌Data: Data Visualization (Power BI, Tableau), Data Pipelines, Data Lakes, Data Factory - Azure, AWS, Google ETL, ELT 📌Figma 📌Docker 📌GIT, Slack, Jira, Agile, SDLC I write clean code, am a goal-oriented type of person and am attentive to all details. React.js: Building responsive, user-friendly interfaces with a keen eye for detail and performance optimization. Laravel & PHP: Developing robust server-side applications, RESTful APIs, and seamless database interactions. Full-Stack Development: Managing projects from concept to deployment, ensuring smooth integration between front-end and back-end systems. Version Control: Proficient in Git for collaborative projects and maintaining code integrity. Problem-Solving: Strong analytical skills to troubleshoot issues and enhance application functionality. I am passionate about delivering high-quality solutions that meet client needs and exceed expectations. Let’s work together to bring your ideas to life!

Hello there! My name is Mehedi Hasan and I'm a skilled web developer with over 4 years of experience in WordPress optimization, VPS server management, and WordPress development. I specialize in optimizing WordPress websites for speed, security, and performance, ensuring that your site loads quickly and operates smoothly. I'm also experienced in developing custom WordPress themes and plugins, as well as managing VPS servers to ensure that your site is always up and running. If you're looking for a reliable and experienced developer who can help you optimize your WordPress site and ensure that it's always running smoothly, then look no further. I'm here to help and I look forward to working with you!