Hi, I’m Jehanzeb!
I build cross-platform mobile applications and full-stack web systems with clean, highly predictable codebases. I work as an iOS app developer + Android app developer using one Flutter codebase for both platforms. I also specialize in designing scalable architectures that connect high-performance front ends with robust MERN stack backends and secure real-time admin dashboards.
WHAT I SPECIALIZE IN:
→ Flutter Mobile App Development
• Cross-platform iOS and Android applications
• Flutter & Firebase integration
• Clean Architecture and scalable project structures
• Real-time features and notifications
• API integrations
• Payment gateway integration
• App Store and Google Play deployment
• Performance optimization and bug fixing
→ MERN Stack Development
• React.js frontend applications
• Node.js and Express.js backend development
• MongoDB database design and optimization
• REST APIs and third-party integrations
• Authentication and authorization systems
• Admin dashboards and internal tools
• Real-time applications using WebSockets
• Scalable backend architecture
→ Full-Stack Product Development
• Minimum viable product development
• Marketplace applications
• CRM and ERP systems
• Saas based platforms
• Booking and scheduling platforms
WHO IS THIS FOR:
• Founders & Startups: Deploying stable, investor-ready MVPs, prototypes, and beta versions.
• SaaS Platform Owners: Expanding legacy monoliths into optimized, fast-loading infrastructures.
• Enterprise Teams: Businesses requiring secure system design that effortlessly supports 10,000+ active users.
What gets delivered:
• Flutter app synced perfectly with backend logic
• Admin dashboard giving real-time product control
• APIs that remain stable under scale and load
• Automated AI system replacing manual operations
• Full unit and integration testing on every build
If you're looking for a Flutter developer or MERN stack developer who can take ownership of both mobile and web development while maintaining high delivery standards, I'd be happy to discuss your project.
LIMITED PROJECT SLOTS AVAILABLE:
I take on a limited number of projects at a time. Book a consultation, and I'll personally review your setup and give you a practical roadmap.
Firebase
Dart
React
Node.js
API Integration
MongoDB
ExpressJS
Flutter
MERN Stack
Mobile App Development
Flutter Stack
Mobile App Design
AI Mobile App Development
Android App Development
iOS Development
Mobile UI Design
Mobile App Bug Fix
Mobile App Development Consultation
Windows Mobile App
.NET Core
Saqib A.
Sharjah, United Arab Emirates
$15/hr
5.0
10 jobs
Build Production-Ready Web & Mobile Apps with Scalable MERN Stack Engineering.
Stop wasting budget on slow developers and bloated codebases that break under traffic. I am a Top-Rated MERN Stack & React Native Developer with 6+ years of experience shipping high-performance web platforms and cross-platform mobile apps for startups, agencies, and enterprises.
I specialize in building scalable architectures that handle real users, not just demos.
My unique advantage is Full-Stack Velocity: I combine deep React and React Native expertise with battle-tested NodeJS backends and Cloud Infrastructure (AWS, GCP, Vercel). I can architect, develop, and deploy your entire product end-to-end, eliminating the cost and friction of hiring separate frontend, backend, and mobile teams, saving you thousands in agency fees.
🚀 Specialized MERN & Mobile Solutions:
➤ Custom Web Applications: Expert in ReactJS, NextJS (SSR/SSG), Redux Toolkit, and TypeScript for blazing-fast SaaS dashboards and platforms.
➤ Cross-Platform Mobile Apps: Native-feel iOS and Android apps built with React Native and Expo, deployed to App Store & Google Play.
➤ Scalable Backend APIs: Production-grade REST and GraphQL APIs using NodeJS, ExpressJS, and NestJS with JWT/OAuth authentication.
➤ Real-Time Systems: Live chat, notifications, video calls, and collaboration tools powered by Socket IO and WebRTC.
➤ Database Architecture: MongoDB, PostgreSQL, MySQL, Firebase, and Redis, schema design optimized for scale and speed.
🛠 Business Impact & Deliverables:
➤ MVP to Market in Weeks: Full-stack MVPs launched in 4–8 weeks so founders can validate fast and raise smarter.
➤ SaaS Platforms: Multi-tenant architectures with Stripe billing, role-based access, and admin dashboards that scale to 100K+ users.
➤ E-Commerce Engines: Custom storefronts, headless commerce, and Shopify integrations with PayPal, Stripe, and Apple or Google Pay.
➤ App Store Deployment: Complete handling of App Store Connect and Google Play submissions, including review compliance.
➤ Performance & SEO: Core Web Vitals optimization, server-side rendering, and 90+ Lighthouse scores out of the box.
⚙️ High-Performance Stack:
➤ Frontend: ReactJS, NextJS, React Native, Redux Toolkit, Tailwind CSS, TypeScript.
➤ Backend: NodeJS, ExpressJS, NestJS, REST APIs, GraphQL, WebSockets.
➤ Databases: MongoDB, Mongoose, PostgreSQL, MySQL, Firebase, Redis.
➤ Cloud & DevOps: AWS (EC2, S3, Lambda), GCP, Docker, CI/CD, Vercel, Netlify, Heroku.
➤ Mobile: React Native, Expo, Native Modules, Push Notifications, In-App Purchases.
Ready to ship a fast, scalable MERN or React Native product your users will love?
Click "Invite to Job" and let's build something users can't put down.
Firebase
MERN Stack
React
React Native
Node.js
Next.js
JavaScript
TypeScript
Mobile App Development
Web Application
ExpressJS
MongoDB
Full-Stack Development
iOS Development
Android App Development
REST API
Redux
GraphQL
Tailwind CSS
Amazon Web Services
Purushottam P.
Dubai, United Arab Emirates
$25/hr
5.0
16 jobs
Hey! I’m Puru, a Flutter Developer who loves turning complex ideas into clean, fast, and scalable mobile apps.
Over the past 6 years, I’ve built and launched production-ready apps for global clients from AI-powered story creators (Boia Stories) and pet training platforms (Petli) to real-time chess analytics (ChessEver) and subscription-based apps with Stripe & RevenueCat.
I specialize in:
1. Cross-platform development (Flutter + Swift/Kotlin bridges)
2. Firebase, Supabase, and GraphQL integrations,
3. LangChain & AI API workflows (OpenAI, Deepgram, ElevenLabs)
4. Custom animations, video/audio processing (AVFoundation, FFMPEG)
5. App Store & Play Store delivery with CI/CD automation
If you need someone who codes fast and cares about clean architecture, performance, and user experience, let’s collaborate and bring your app idea to life 🚀
Firebase
Flutter
Swift
Figma
GitHub
Dart
Supabase
In-App Purchases
Stripe
Mobile App Development
Lizaveta S.
Dubai, United Arab Emirates
$35/hr
5.0
3 jobs
𝗔𝗜 𝗰𝗼𝗱𝗲 𝗯𝗿𝗲𝗮𝗸𝘀 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁𝗹𝘆 𝘁𝗵𝗮𝗻 𝗿𝗲𝗴𝘂𝗹𝗮𝗿 𝗰𝗼𝗱𝗲 - it looks perfect in a demo, then hallucinates, misses an edge case, fails silently, or creates bad data the first week real users touch it.
I make sure it survives that.
I'm Lizaveta, a full-stack developer focused on AI-powered SaaS products, internal tools, dashboards, CRM workflows, and production-ready integrations.
I build with Node.js, TypeScript, NestJS, React, Next.js, Firebase, PostgreSQL, MongoDB, Redis, REST APIs, OpenAI API, Claude API, RAG, vector search, LangChain, LangGraph, and third-party APIs.
My work is usually not “just add AI.”
It is making sure AI fits safely into the product: validation, fallback logic, structured outputs, confidence thresholds, monitoring, human review flows, and clean backend boundaries.
𝗪𝗛𝗔𝗧 𝗜'𝗩𝗘 𝗕𝗨𝗜𝗟𝗧
A SaaS platform serving 35,000+ businesses and processing 2.5M transactions per year - integrated an AI chatbot with ML document parsing into a live product, hardened for real user traffic rather than a controlled demo.
A Series B-funded PropTech SaaS with around 100 employees - built product features inside a live microservices architecture without disrupting workflows already used by thousands of professionals.
A healthcare SaaS product - built AI-assisted workflows into an existing platform, with validation logic separating deterministic checks from AI-based interpretation so failures surfaced clearly instead of silently.
Marketplace and dashboard products - built merchant/admin flows, user roles, reporting, API integrations, search, product-data workflows, and back-office tools where reliability mattered more than visual polish.
CRM and automation workflows - built internal tools, lead flows, customer records, webhook integrations, task automation, and AI-assisted workflows that helped teams reduce manual work without losing control of the process.
𝗪𝗛𝗔𝗧 𝗜 𝗕𝗨𝗜𝗟𝗗 𝗙𝗢𝗥 𝗬𝗢𝗨
AI features that survive production: RAG pipelines, LLM-powered agents, AI assistants, document parsing, semantic search, prompt workflows, structured outputs, fallback paths, and evaluation harnesses.
Full-stack SaaS applications: Node.js, NestJS, TypeScript, React, Next.js, Firebase, PostgreSQL, REST APIs, GraphQL, authentication, role-based access, dashboards, admin panels, and background jobs.
Integrations that don’t quietly fail: webhooks, third-party APIs, payment flows, CRM integrations, Firebase functions, retry logic, idempotency, error handling, monitoring, and clean logs.
Backend systems for AI products: API design, database schema, queue/background processing, vector search, metadata handling, file ingestion, secure auth, cloud deployment, CI/CD, and production debugging.
Dashboards and internal tools: admin panels, analytics pages, CRM views, reporting flows, moderation screens, user management, team accounts, permissions, and workflow automation.
𝗛𝗢𝗪 𝗜 𝗪𝗢𝗥𝗞
I do not overbuild.
I first identify where the system can fail: bad AI output, missing data, weak API boundaries, poor auth logic, unclear user roles, broken webhooks, slow queries, or integrations without retries.
Then I build the smallest reliable version that can actually ship.
You get clean communication, structured delivery, realistic estimates, and production-minded engineering.
𝗖𝗢𝗥𝗘 𝗦𝗧𝗔𝗖𝗞
Backend: Node.js, TypeScript, NestJS, Express.js, REST API, GraphQL, Firebase Functions
Frontend: React, Next.js, Tailwind CSS, dashboards, admin panels, SaaS UI
Databases: PostgreSQL, Firebase/Firestore, MongoDB, Redis
AI: OpenAI API, Claude API, LangChain, LangGraph, RAG, vector search, embeddings, prompt engineering, AI agents
Cloud / DevOps: AWS, Firebase, Docker, CI/CD, GitHub Actions
Integrations: webhooks, OAuth/JWT, Stripe, CRM APIs, payment APIs, third-party SaaS APIs
Reliability: logging, monitoring, validation, fallback logic, retry/idempotency, testing, production debugging
𝗚𝗢𝗢𝗗 𝗙𝗜𝗧 𝗜𝗙 𝗬𝗢𝗨 𝗡𝗘𝗘𝗗
An AI feature added to an existing SaaS product.
A RAG system or AI assistant that needs to work with real data.
A Firebase / Node.js / TypeScript backend cleaned up or extended.
A dashboard, CRM, internal tool, or admin panel built properly.
A third-party API, webhook, payment, or automation flow made reliable.
A developer who can think through product risk, not just close tickets.
𝗜𝗳 𝘆𝗼𝘂’𝗿𝗲 𝘀𝗵𝗶𝗽𝗽𝗶𝗻𝗴 𝗮𝗻 𝗔𝗜 𝗳𝗲𝗮𝘁𝘂𝗿𝗲 𝗮𝗻𝗱 𝘄𝗼𝗿𝗿𝗶𝗲𝗱 𝗶𝘁 𝘄𝗼𝗻’𝘁 𝗵𝗼𝗹𝗱 𝘂𝗽 𝗽𝗮𝘀𝘁 𝘁𝗵𝗲 𝗱𝗲𝗺𝗼 - send me what you're building. I’ll tell you where it is likely to break first.
React
Node.js
JavaScript
TypeScript
Next.js
Web Development
API Integration
PostgreSQL
RESTful API
SaaS
Full-Stack Development
Front-End Development
Back-End Development
AI Agent Development
AI App Development
Artificial Intelligence
Machine Learning
OpenAI API
NestJS
Supabase
Abubakar S.
Dubai, United Arab Emirates
$40/hr
5.0
3 jobs
⚡ 𝗪𝗮𝗻𝘁 𝘁𝗼 𝗮𝘃𝗼𝗶𝗱 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝘁𝗵𝗲 𝘄𝗿𝗼𝗻𝗴 𝘀𝘆𝘀𝘁𝗲𝗺? 𝗟𝗲𝘁’𝘀 𝘁𝗮𝗹𝗸. 𝗜 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝗱𝗲𝗳𝗶𝗻𝗲 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗔𝗜 + 𝘁𝗲𝗰𝗵 𝘀𝘁𝗿𝗮𝘁𝗲𝗴𝘆 𝗯𝗲𝗳𝗼𝗿𝗲 𝘆𝗼𝘂 𝗶𝗻𝘃𝗲𝘀𝘁 𝗶𝗻 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁.
🏆 15+ Years Experience | ⭐ 100% Job Success | 🥇 Top Software Developer - Clutch
🌎 Clients across US, UK, Europe & GCC | 💯 Top 2% Talent on Upwork
𝐌𝐨𝐬𝐭 𝐭𝐞𝐜𝐡 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐟𝐚𝐢𝐥 𝐛𝐞𝐟𝐨𝐫𝐞 𝐭𝐡𝐞𝐲 𝐬𝐭𝐚𝐫𝐭 𝐛𝐞𝐜𝐚𝐮𝐬𝐞 𝐭𝐡𝐞 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐢𝐬 𝐰𝐫𝐨𝐧𝐠.
𝐈’𝐦 𝐚 𝐂𝐄𝐎 𝐚𝐧𝐝 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲, 𝐀𝐈 & 𝐌𝐋 𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐲 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐧𝐭 𝐛𝐚𝐜𝐤𝐞𝐝 𝐛𝐲 𝐚 𝐬𝐞𝐧𝐢𝐨𝐫 𝐭𝐞𝐚𝐦, helping founders, CEOs, and businesses make clear technical decisions before building anything. My focus is consulting-first: defining architecture, validating ideas, and building AI-driven technology strategies that reduce risk and increase speed.
Once direction is clear, I also lead or support execution across full-stack development, AI systems, automation, UI/UX, and digital products.
🧠 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 (𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗶𝗻𝗴 𝗙𝗶𝗿𝘀𝘁)
• AI, ML & Technology Strategy Consulting
• Fractional Advisory & Technical Leadership
• Product Architecture & System Design
• AI/ML Solution Design & Feasibility Analysis
• Digital Transformation Roadmaps
• MVP Definition & Technical Planning
• Code/Architecture Audits & Scalability Planning
• Automation & Workflow Strategy
• UI/UX & Product Experience Consulting
⚙️ 𝗪𝗵𝗮𝘁 𝗜 𝗕𝘂𝗶𝗹𝗱 𝗔𝗳𝘁𝗲𝗿 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝘆
🔹 𝐀𝐈 & 𝐋𝐋𝐌 𝐒𝐲𝐬𝐭𝐞𝐦𝐬
GPT-4o, Claude, Gemini, Llama, LangChain, RAG pipelines, Vector Search, OpenAI Assistants, Pinecone, ChromaDB, Weaviate, ElevenLabs, Prompt Engineering
🔹 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐒𝐲𝐬𝐭𝐞𝐦𝐬
React.js, Next.js, Node.js, NestJS, Python, FastAPI, Laravel, REST APIs, GraphQL, SaaS platforms, Microservices
🔹 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 & 𝐀𝐈 𝐖𝐨𝐫𝐤𝐟𝐥𝐨𝐰𝐬
n8n, Zapier, Make, Python automation, CRM integrations, API orchestration, AI-powered workflows
🔹 𝐖𝐞𝐛𝐟𝐥𝐨𝐰 & 𝐒𝐡𝐨𝐩𝐢𝐟𝐲
Shopify Stores, Shopify Apps, Custom Shopify Development, Webflow CMS, Landing Pages, Conversion-optimized experiences
🔹 𝐔𝐈/𝐔𝐗 & 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐃𝐞𝐬𝐢𝐠𝐧
Figma, UX Strategy, Wireframing, Design Systems, SaaS Dashboards, Product Flows, Prototyping
🔹 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 & 𝐈𝐧𝐟𝐫𝐚
PostgreSQL, MySQL, MongoDB, Firebase, Supabase, Redis
🔹 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐏𝐬
AWS, Docker, Vercel, CI/CD Pipelines, Serverless Architecture
📊 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝗶𝗲𝘀 𝗜 𝗦𝗲𝗿𝘃𝗲
SaaS · FinTech · Healthcare · EdTech · LegalTech · Logistics · eCommerce · ERP & CRM · AI Startups · Marketplaces
🎯 𝗪𝗵𝗼 𝗧𝗵𝗶𝘀 𝗜𝘀 𝗙𝗼𝗿
Founders who need clarity before building
CEOs who need strategic AI/tech direction
Businesses scaling systems or launching new products
Teams needing senior-level consulting + execution support
📩 𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗜𝘁 𝗥𝗶𝗴𝗵𝘁
If you need senior-level AI, ML, and technology consulting before or during development, let’s talk.
I’ll help you define the right architecture, avoid costly mistakes, and move faster with clarity.
Node.js
Next.js
NestJS
JavaScript
MongoDB
ExpressJS
Angular
React
React Native
jQuery
Google APIs
API Integration
Replit
SaaS Development
AI Chatbot
DevOps
DevOps Engineering
Jibran M.
Dubai, United Arab Emirates
$15/hr
5.0
6 jobs
Your software should do more than work, it should help your business grow, automate operations, and scale without creating technical debt.
I help startups, SMEs, agencies, and growing businesses build modern web applications, SaaS platforms, AI-powered solutions, and custom business software using React.js, Next.js, Node.js, and modern cloud technologies.
Whether you're building a new SaaS product, launching an MVP, modernizing an existing platform, integrating AI into your workflow, or developing an internal business system, I focus on delivering software that is scalable, secure, maintainable, and built for long-term success.
👉 What I Can Build
• Custom Web Applications
• SaaS Platforms (MVP & Multi-Tenant)
• AI-Powered Web Applications
• Internal Business Systems
• CRM & ERP Solutions
• Admin Dashboards
• Customer & Client Portals
• Booking & Appointment Platforms
• Marketplace Applications
• Workflow Automation Systems
• REST API Development
• Third-Party API Integrations
• Payment Gateway Integrations (Stripe, PayPal & more)
• Authentication & User Management
• Business Process Automation
👉Full-Stack Development
I build complete end-to-end applications with modern JavaScript technologies, creating responsive user experiences backed by reliable and scalable backend systems.
From planning the application architecture to deployment and ongoing improvements, I develop software that is designed to support business growth—not just today's requirements.
👉Frontend Development
• React.js
• Next.js
• TypeScript
• JavaScript (ES6+)
• HTML5
• CSS3
• Tailwind CSS
• Responsive UI Development
• Performance Optimization
I create fast, intuitive interfaces that deliver a seamless experience across desktop, tablet, and mobile devices.
👉Backend Development
• Node.js
• Express.js
• REST APIs
• Authentication & Authorization
• Role-Based Access Control
• Database Design
• Business Logic Development
• Third-Party Integrations
• Performance Optimization
My backend solutions are built with security, maintainability, and scalability in mind.
👉AI Integration & Automation
AI is becoming an essential part of modern software, and I help businesses integrate it where it creates measurable value.
👉Services include:
• OpenAI Integration
• AI Chatbots & Assistants
• AI Workflow Automation
• Custom AI Features
• Document Processing
• Intelligent Search
• Content Generation
• Business Process Automation
👉Database & Infrastructure
• MongoDB
• PostgreSQL
• MySQL
• Firebase
• Supabase
• Vercel
• AWS
👉WordPress & Shopify
When your project requires a CMS or eCommerce solution, I also develop and customize WordPress and Shopify websites with a focus on performance, usability, and long-term maintainability.
👉My Development Process
1. Understand your business objectives and project requirements.
2. Recommend the right technical architecture for your goals.
3. Build clean, maintainable, and scalable software.
4. Test thoroughly to ensure reliability and performance.
5. Deploy with confidence and provide ongoing support when needed.
Clear communication, transparent progress updates, and reliable delivery are part of every project.
👉Why Clients Work With Me
✔ Business-focused development that prioritizes real outcomes over unnecessary complexity.
✔ Clean, maintainable code that supports long-term growth.
✔ Scalable architecture designed to evolve with your business.
✔ Strong communication, proactive problem-solving, and dependable delivery.
If you're looking for a developer who can build modern web applications, SaaS products, AI-powered solutions, or custom business software that creates real business value, I'd be happy to discuss your project and recommend the best technical approach.
React
Next.js
Node.js
Full-Stack Development
SaaS Development
Web Application
TypeScript
JavaScript
API Development
REST API
API Integration
OpenAI API
AI Agent Development
AI App Development
AI Model Integration
AI Chatbot
MongoDB
PostgreSQL
Supabase
Tailwind CSS
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