Hi, I’m a results-driven Full Stack Developer with over 5 years of hands-on experience delivering scalable and intelligent software solutions across industries such as Telecom, Healthcare, Logistics, and Smart Cities.
While I’m new to Upwork, I’ve already made a mark working on mission-critical applications with global enterprises like Vodafone Qatar and clients in Saudi Arabia.
⦿ Key Highlights:
Vodafone Qatar Projects:
⦿ Fleet Management System – Real-time vehicle tracking, route optimization, and analytics dashboards.
⦿ Asset Tracking – IoT-based asset visibility across distributed environments.
⦿ Smart Parking – Sensor-integrated system with live availability mapping.
⦿ Student Tracking – Safety-focused solution integrating school transport tracking and parental notifications.
⦿ Tabib App (Saudi Client):
Developed a healthcare application focused on patient-doctor interaction, appointment booking, and telemedicine features.
⦿ Software Development:
Full-Stack Development | Web and Mobile Development | Web Application | Android | iOS | Custom Web3 dApps | Smart Contract | Crypto Wallet | AI Agent Development | AI Bot | CMS Development | Machine Learning AI/ML | NLP | Data Analytics | ETL | SaaS Development | MVP | Database Architecture | API Development | dApp Development | AWS | GCP | DevOps | MERN | MEAN | LAMP | QA/QC
⦿ Tech-stack:
⁃ Front-End Development: React.js, Vue.js, JavaScript, TypeScript, Tailwind CSS, HTML, Angular, jQuery
⁃ Back-End Development: Node.js, Golang, Rust, C++, Zig, Express.js, Next.js, NestJS, Nuxt.js, Python, Django, Java, Spring, Laravel, PHP, Firebase, Ruby on Rails, Kotlin, Swift, Flutter
⁃ Database Management: MySQL, MongoDB, PostgreSQL, BigchainDB
⁃ Blockchain: Ethereum, Solana, Solidity, Anchor, Smart Oracles, Chainlink, DeFi, DEX, Crypto Hyperledger Fabric, Web3.js, Ethers.js
⁃ Messaging/Queuing: Apache Kafka, RabbitMQ, Amazon SQS, Redis Streams, NATS, Adaptive Aeron
⁃ API Integration: RESTful APIs, REST, FastAPI, GraphQL, gRPC, OpenAPI, WebSockets, Microservice
⁃ AI Integration: Open AI, Claude, Gemini, ChatGPT, Llama
⁃ Machine Learning (AI/ML): AI Agent, AI Bot, Python, TensorFlow, PyTorch, LangChain, OpenAI GPT, FastAPI, Apache Spark, Hugging Face, AWS SageMaker, OpenCV, Vertex AI, RAG, LLM finetune, NLP, ML
⁃ AWS Tools: Lambda, CloudFront, EC2, S3, Kinesis, Kubernetes, Docker, Nginx
⁃ Version Control: Git, GitHub, Bitbucket
I bring a problem-solving mindset, agile workflow, and enterprise-grade software practices to every project I take on.
If you're looking for a dedicated, technically strong partner to build or optimize your product, let's connect!
iOS Development
Android App Development
SwiftUI
Flutter
Dart
React Native
Firebase
Node.js
Raheem U.
Islamabad, Pakistan
$35/hr
4.9
276 jobs
⭐️ Expert Vetted - Top 1% of talent on Upwork
🕒 20,000+ hours on Upwork
✅ 15+ years of experience
✅ 170+ projects delivered
✅ Excelling in delivering Fortune 500-scale projects
Hi there! I'm a Senior Full Stack developer, expert-vetted on Upwork, with a proven track record of delivering high-impact solutions for Fortune 500 companies, Silicon Valley startups, and global enterprises. I specialize in building Shopify stores, custom MVPs and end-to-end Web, Mobile, SaaS, AI/ML, Web3, CRM, ERP, and cloud-native applications across a wide range of industries. I work as a hands-on technology partner, supporting every stage of the development lifecycle—from concept and design to deployment and long-term maintenance.
I genuinely love helping businesses build kick-ass software & artificial intelligence products! This innate drive and dedication towards excellence has earned me an Expert-Vetted Badge from Upwork - visible to Enterprise Upwork clients, which has ranked me among the top 1% of software development talent on the platform.
Accomplishments:
⭐️ As certified members of the AWS Partner Network, our expertise has been formally recognized by Amazon. This affiliation is rare among freelancers and agencies and gives us direct access to resources and best practices most don’t have.
⭐️ Awarded an Expert-Vetted Badge on Upwork Top 1% of Software Development Talent on Upwork
⭐️ Recently received the Top 100 Award on Clutch.co (leader in B2B reviews)
⭐️ Was asked to join Upwork's Customer Advocacy Program
⭐️ We’ve done projects for some big names: Fortune 500 companies
⭐️ Past clients have used web and mobile apps developed by us to raise over $50 million (USD) in funding
If you have read this far, please note that I appreciate you taking the time to learn about me. Personally, it’s been an amazing journey and knowledge exercise to get to this level of competence in AI and software development.
Software Development:
Full-Stack Development | Shopify | Shopify Apps | Headless | Web and Mobile Development | Web Application | Android | iOS | Custom Web3 dApps | Smart Contract | Crypto Wallet | AI Agent Development | AI Bot | CMS Development | Machine Learning AI/ML | NLP | Data Analytics | ETL | SaaS Development | MVP | Database Architecture | API Development | dApp Development | AWS | GCP | DevOps | MERN | MEAN | LAMP | QA/QC
Tech-stack:
⁃ Front-End Development: React.js, Vue.js, JavaScript, TypeScript, Tailwind CSS, HTML, Angular, jQuery
⁃ Back-End Development: Node.js, Golang, Rust, C++, Zig, Express.js, Next.js, NestJS, Nuxt.js, Python, Django, Java, Spring, Laravel, PHP, Firebase, Ruby on Rails, Kotlin, Swift, Flutter
⁃ Database Management: MySQL, MongoDB, PostgreSQL, BigchainDB
⁃ Blockchain: Ethereum, Solana, Solidity, Anchor, Smart Oracles, Chainlink, DeFi, DEX, Crypto Hyperledger Fabric, Web3.js, Ethers.js
⁃ Messaging/Queuing: Apache Kafka, RabbitMQ, Amazon SQS, Redis Streams, NATS, Adaptive Aeron
⁃ API Integration: RESTful APIs, REST, FastAPI, GraphQL, gRPC, OpenAPI, WebSockets, Microservice
⁃ AI Integration: Open AI, Claude, Gemini, ChatGPT, Llama
⁃ Machine Learning (AI/ML): AI Agent, AI Bot, Python, TensorFlow, PyTorch, LangChain, OpenAI GPT, FastAPI, Apache Spark, Hugging Face, AWS SageMaker, OpenCV, Vertex AI, RAG, LLM finetune, NLP, ML
⁃ AWS Tools: Lambda, CloudFront, EC2, S3, Kinesis, Kubernetes, Docker, Nginx
⁃ Version Control: Git, GitHub, Bitbucket
Enterprise Software
Machine Learning
LLM Prompt Engineering
Deep Learning
Generative AI
Node.js
Python
React
Vue.js
MEAN Stack
Shopify
Shopify Plus
Shopify Apps
Artificial Intelligence
ChatGPT
Muhammad W.
Islamabad, Pakistan
$25/hr
4.9
11 jobs
6+ years of experience with EVM chains developing DeFi, staking, swaps, lending, prediction markets, NFT marketplaces, token launches, privacy protocols and web3 games, I build smart contracts and Web3 systems that are meant to go live, not stay in testing.
Most of my work involves handling real user flows, real transactions, and systems where mistakes are expensive. That’s why I focus heavily on security, edge cases, and clean architecture instead of just writing code that “works”.
I’ve worked across DeFi protocols, DAO systems, token launch platforms, and full-stack dApps, contributing from contract design all the way to backend and integrations.
What I Work On
→ Smart Contracts (Solidity)
- Staking, swaps Rewards, Lending, Prediction markets, NFT marketplaces, Token launches, Token sale logic, vesting
- ERC20, ERC721, ERC1155 and custom token models
- Upgradeable contracts (UUPS / proxy patterns / Diamond Proxy)
- DAO governance structures
- EVM chains (Ethereum, Polygon, Arbitrum, Base, BNB Chain, Fantom etc.)
→ Security and Contract Design
- Reentrancy protection and safe fund handling
- Access control and permission design
- Gas optimization (storage, execution efficiency)
- Writing and testing with Hardhat and Foundry
- Solidity, Foundry, Hardhat, Ethers.js, Node.js, React, TypeScript, Web3, Smart Contracts
→ Web3 Backend Systems
- Node.js and Express APIs
- Contract integrations and transaction flows
- On-chain and off-chain data sync
- Event handling and system design
→ Advanced Work
- Chainlink oracle integrations
- ECDSA signature verification
- Zero-knowledge integrations (ZK-based systems)
- Data indexing with Graphs
How I Work
→ I don’t just code features, I design systems
→ I think in terms of failure cases, not just happy paths
→ I keep contracts simple, readable, and secure
→ I communicate clearly and stick to delivery timelines
Experience
I’ve contributed to multiple production-level Web3 products, including:
→ DeFi systems with staking and reward distribution
→ DAO governance platforms
→ Token-based ecosystems and launchpads
→ Applications used by active users, not just test deployments
Why Clients Work With Me
→ Strong focus on security and correctness
→ Practical understanding of DeFi mechanics
→ Clean and scalable architecture
→ No overpromising, just solid delivery
Let’s Talk
If you need someone who can build reliable smart contracts and Web3 systems without shortcuts, feel free to reach out.
Blockchain
Smart Contract
Solidity
Blockchain Development
Blockchain Architecture
Ethereum
web3.js
JavaScript
CSS 3
Node.js
React
DevOps
AWS Lambda
Cryptocurrency
Python
Muhammad K.
Islamabad, Pakistan
$12/hr
4.1
5 jobs
I help startups and businesses build scalable SaaS platforms, custom web applications, AI-powered automation systems, and backend infrastructure.
My expertise spans the complete product lifecycle—from architecture and database design to frontend development, backend systems, third-party integrations, and deployment.
Over the years, I have worked on multi-tenant SaaS platforms, AI automation solutions, WhatsApp integrations, CRM systems, admin dashboards, workflow automation tools, marketplaces, and custom business applications.
Core Expertise:
• Full Stack Development (React, Next.js, NestJS, Node.js)
• SaaS Product Development
• Backend Architecture & APIs
• AI Automation & AI Agents
• Workflow Automation
• WhatsApp Business Integrations
• Database Design (MongoDB, PostgreSQL)
• Cloud Deployment & DevOps
• Blockchain & Web3 Applications
I focus on building reliable, production-ready systems that solve real business problems and scale with growth.
Node.js
React
TypeScript
JavaScript
Docker
ExpressJS
Full-Stack Development
API Integration
REST API
Automation
Web Scraping
Puppeteer
MongoDB
PostgreSQL
NestJS
SaaS Development
AI Development
OpenAI API
Software Architecture
Danish G.
Islamabad, Pakistan
$17/hr
5.0
1 jobs
Blockchain developer with 10+ years of experience building secure smart contracts, full-stack dApps, and scalable Web3 solutions. I deliver projects that pass audits, attract investors, and grow with your users—whether it’s DeFi, NFTs, or enterprise blockchain integration.
GitHub Link: github.com/mdanishghafoor
✅ What I Can Build for You
Smart Contracts & DeFi Protocols – Secure, audited, gas-optimized.
Full-Stack dApps – User-friendly apps with seamless blockchain integration.
Blockchain Architecture – Designed for scalability, transparency, and compliance.
Web3 Integrations – Wallets, NFT utilities, token gating, and transactions.
End-to-End Blockchain Solutions – From concept to deployment, tailored to your industry.
🔑 Why Clients Hire Me
✔️ Fast, clear, and reliable communication
✔️ Scalable & secure code that stands up to audits
✔️ On-time delivery with business value in mind
✨ If you need a blockchain expert who combines technical depth with business impact, let’s connect and make your project a success.
NFT
Blockchain Architecture
Smart Contract Development
Solidity
Ethereum
web3.js
Ethers.js
DApp Development
DeFi
Cryptography
Node.js
Bot Framework
Ehsan Haider Q.
Islamabad, Pakistan
$40/hr
5.0
1 jobs
I am a hands on C++ and Rust engineer with experience in performance sensitive backends, trading infrastructure, blockchain systems, and machine learning tools.
A lot of my work starts with an existing system that is slow, unreliable, or difficult to maintain. I get into the code, find the real bottleneck, and work toward the simplest practical fix.
My recent work includes EVM data engines, low latency market infrastructure, Rust data collection services, DEX routing, backtesting systems, PostgreSQL performance work, WebAssembly applications, and machine learning infrastructure.
I am comfortable fixing difficult production problems, improving an existing architecture, or building a new system from the ground up.
I communicate clearly, work independently, and care about leaving behind software that is dependable and easy to understand.
I am based in Pakistan and can overlap with both European and United States working hours.
C++
Rust
Blockchain
Blockchain Development
Infrastructure as Code
Software Architecture & Design
Software Development
Blockchain Architecture
Script
React
Node.js
Vue.js
TypeScript
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