You will get an expert Software Developer or Next.js Developer for your web app
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Project details
šš«š£šš„š§ š¦š¢šš§šŖšš„š & š”šš«š§.šš¦ ššš©ššš¢š£š šš”š§
Need an experienced š¦š¼š³ššš®šæš² šš²šš²š¹š¼š½š²šæ or š”š²š š.š·š šš²šš²š¹š¼š½š²šæ to build, improve, or scale your web application?
I develop secure, responsive, production-ready applications using Next.js, React, TypeScript, Node.js, PostgreSQL, Supabase, AWS, and Vercel.
šŖššš§ š ššš” ššØššš
ā¢ Full-stack Next.js applications
ā¢ SaaS and startup MVPs
ā¢ Admin and user dashboards
ā¢ Customer portals and internal tools
ā¢ Marketplaces and booking platforms
ā¢ New features for existing applications
ā¢ APIs, webhooks, and integrations
šŖššš§ š¬š¢šØ ššš§
ā¢ Responsive, modern frontend
ā¢ Secure backend and database
ā¢ Authentication and user roles
ā¢ API and third-party integrations
ā¢ Clean, maintainable source code
ā¢ Testing and production deployment
ā¢ Documentation and repository handover
The selected package covers the agreed screens, roles, features, and integrations. Additional scope may require an add-on.
š¦š²š»š± šŗš² šš¼ššæ šæš²š¾šš¶šæš²šŗš²š»šš, š±š²šš¶š“š»š, š°ššæšæš²š»š ššš®š°šø, š®š»š± šš¶šŗš²š¹š¶š»š².
Need an experienced š¦š¼š³ššš®šæš² šš²šš²š¹š¼š½š²šæ or š”š²š š.š·š šš²šš²š¹š¼š½š²šæ to build, improve, or scale your web application?
I develop secure, responsive, production-ready applications using Next.js, React, TypeScript, Node.js, PostgreSQL, Supabase, AWS, and Vercel.
šŖššš§ š ššš” ššØššš
ā¢ Full-stack Next.js applications
ā¢ SaaS and startup MVPs
ā¢ Admin and user dashboards
ā¢ Customer portals and internal tools
ā¢ Marketplaces and booking platforms
ā¢ New features for existing applications
ā¢ APIs, webhooks, and integrations
šŖššš§ š¬š¢šØ ššš§
ā¢ Responsive, modern frontend
ā¢ Secure backend and database
ā¢ Authentication and user roles
ā¢ API and third-party integrations
ā¢ Clean, maintainable source code
ā¢ Testing and production deployment
ā¢ Documentation and repository handover
The selected package covers the agreed screens, roles, features, and integrations. Additional scope may require an add-on.
š¦š²š»š± šŗš² šš¼ššæ šæš²š¾šš¶šæš²šŗš²š»šš, š±š²šš¶š“š»š, š°ššæšæš²š»š ššš®š°šø, š®š»š± šš¶šŗš²š¹š¶š»š².
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Performance Optimization, W3C Markup Validation Service, DesignWhat's included
| Service Tiers |
Starter
$650
|
Standard
$1,500
|
Advanced
$3,000
|
|---|---|---|---|
| Delivery Time | 12 days | 24 days | 36 days |
Number of Revisions | 1 | 2 | Unlimited |
Number of Pages | 7 | 20 | 30 |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
22 reviews
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JL
Ju-Won L.
Jul 31, 2026
Web App Figma Design & Development in Next JS for Labs & Students
We worked with this team for two years. Over that time they delivered clean, well-structured work, understood scope quickly, and communicated clearly and consistently. There was plenty of feedback along the way, and what stood out was that they always took it seriously and genuinely cared about getting it right. Whenever we had questions, they could explain their work clearly. I would, and will, happily work with them again.
TM
Tracy M.
Jul 31, 2026
30 minute consultation
I had a consultation call with Haseeb regarding my web and AI application idea. He clearly explained the development process, recommended the right technology stack, and provided a practical roadmap, timeline, and cost estimate. The session was professional, helpful, and well organized. Highly recommended for full-stack and AI development consultation.
GC
Gina C.
Jul 31, 2026
Full-Stack Web & AI App Development Consultation
It was a pleasure working with FuzionDev. They provided a thorough technical consultation, identified key issues, and delivered clear, actionable recommendations for my AI-powered web application. Their expertise in full-stack architecture, bug analysis, and development planning gave me a solid roadmap for moving the project forward. Communication was professional and timely throughout the engagement. I would gladly work with them again and highly recommend their services.
BD
Brian D.
Jul 30, 2026
Full-Stack Developer for AI Chatbot & SaaS Platform Next.js, Node.js, OpenAI
Working with Haseeb and his team at FuzionDev LLC was a great experience. They developed our AI chatbot and SaaS platform, handling the frontend, backend, API integrations, authentication and deployment.
Communication was clear, delivery was reliable and the final product was scalable and user-friendly. Highly recommended for AI chatbot development, SaaS development and custom software development.
Communication was clear, delivery was reliable and the final product was scalable and user-friendly. Highly recommended for AI chatbot development, SaaS development and custom software development.
GC
Gina C.
Jun 10, 2026
Website Bug Fixes & Development Support
It was a pleasure working with FuzionDev. They helped resolve several bugs on my website and provided effective solutions to issues that were impacting functionality. Communication was clear throughout the project, and they were responsive whenever questions or adjustments came up. Highly recommend
About Haseeb
AI Integration Developer | AI Agents, Claude, OpenAI, n8n, Full-Stack
100%
Job Success
Faisalabad, PakistanĀ - 9:05 am local time
š§š¢š£ š„šš§šš š£ššØš¦ | šš¬š¬% šš¢š š¦šØšššš¦š¦ | š°š°+ šØš£šŖš¢š„š šš¢šš¦ | šµš±š¬+ šš¢šØš„š¦
Building an AI Agent, adding RAG to an existing product, automating operations with n8n, or turning a vibe-coded prototype into a secure production application? I can take it from architecture and integration through testing, deployment, and post-launch support.
šš šš”š§ššš„šš§šš¢š” | šš šššš”š§š¦ | ššššØšš | š„šš
ā¢ Claude API, Claude Code, OpenAI API & Gemini integrations
ā¢ AI Agent Development, MCP, tool calling & structured outputs
ā¢ Retrieval-Augmented Generation (RAG), vector search, embeddings & knowledge bases
ā¢ AI chatbots, assistants, internal copilots & document Q&A
ā¢ Document extraction, classification, summarization & intelligent processing
ā¢ Generative AI, LLM integrations, API Integration, guardrails & cost optimization
š”š“š” & šš ššØš§š¢š šš§šš¢š”
ā¢ n8n AI workflows & business process automation
ā¢ CRM, email, forms, databases, APIs & webhook integrations
ā¢ Lead qualification, onboarding, follow-ups & sales workflows
ā¢ Multi-step workflows, conditional logic, retries, error handling & monitoring
ā¢ Self-hosted n8n with Docker/AWS when more control is required
ā¢ Reporting, notifications, data synchronization & internal operations automation
š©ššš šš¢ššš”š | šš šš£š£ š„šš¦ššØš
Built with Lovable, Bolt, Replit, Cursor, v0, or Claude Code but not ready for real users? I turn fast AI-generated prototypes into secure, maintainable, production-ready applications.
ā¢ Audit AI-generated codebases and identify critical risks
ā¢ Fix authentication, authorization & Supabase RLS
ā¢ Secure APIs, credentials, database access & backend endpoints
ā¢ Repair Stripe, database, webhook & third-party API integrations
ā¢ Refactor unstable AI-generated code and improve maintainability
ā¢ Improve performance, testing, logging, monitoring & deployment
ššØšš-š¦š§ššš & š¦ššš¦ ššš©ššš¢š£š šš”š§
ššæš¼š»šš²š»š±: Next.js, React, TypeScript, Tailwind CSS, shadcn/ui
šš®š°šøš²š»š±: Node.js, Python, FastAPI, Express.js, NestJS & REST APIs
šš®šš®šÆš®šš²: PostgreSQL, Supabase, Prisma, MongoDB & Redis
š£š®ššŗš²š»šš: Stripe, subscriptions & Stripe Connect
šš²šš¢š½š: AWS, Vercel, Docker, GitHub Actions & CI/CD
I build AI SaaS platforms, multi-tenant applications, marketplaces, dashboards, client portals, CRM systems, booking platforms, and internal business tools.
šš šš¢š”š¦šØšš§šš”š & šš„šššš§ššš§šØš„š
ā¢ AI use-case discovery & technical planning
ā¢ Claude vs. OpenAI vs. Gemini model selection
ā¢ RAG, AI Agent, MCP & automation architecture
ā¢ SaaS, multi-tenant, database & integration architecture
ā¢ Security, scalability, performance, reliability & AI cost optimization
ā¢ Codebase reviews, technical roadmaps, estimates & modernization plans
šŖššš§ š¬š¢šØ ššš” šš«š£ššš§
ā¢ Clear discovery and architecture before development begins
ā¢ Practical milestones, estimates & technical recommendations
ā¢ Production-focused engineering: security, permissions, testing & performance
ā¢ Clear communication, documentation & repository handover
ā¢ Support from architecture through deployment ā not just code delivery
I personally lead discovery, architecture, technical planning, and client communication. For larger projects, my Upwork agency can provide additional full-stack developers, UI/UX designers, QA engineers, mobile developers, and DevOps specialists.
Eligible fixed-scope projects can include up to 30 days of post-launch support for issues related to the delivered scope.
Send me your idea, current stack, timeline, and biggest technical challenge. Iāll recommend the most practical architecture and a clear first milestone.
Steps for completing your project
After purchasing the project, send requirements so Haseeb can start the project.
Delivery time starts when Haseeb receives requirements from you.
Haseeb works on your project following the steps below.
Revisions may occur after the delivery date.
1st Update: 25% of the work will be shown
I will show the 25% of the work done depending on the requirements you will send.
2nd Update: 50% of the work will be shown
I will show the 50% of the work done depending on the requirements you will send.