Hafiz Muhammad Talha K.

Full Stack Developer: PHP | React | RAG | AI Agents

⭐️ Top-Rated + Full Stack Development + AI Agents Specialist ⭐️ 1,000+ hours on Upwork ✅ 6+ years of experience ✅ 20+ projects delivered ✅ Excelling in delivering big-scale projects Hi there! I'm a Senior Full Stack developer, Top-Rated on Upwork, with a proven track record of delivering high-impact solutions for companies, US startups, and global enterprises. 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 Top Rated Badge from Upwork - visible to Enterprise Upwork clients, which has ranked me among the top 3% of software development talent on the platform. Accomplishments: ⭐️ Senior Engineer on Pakistan's largest job platform — I build and maintain the core systems at Rozee.pk, a recruitment platform serving 100,000+ users, shipping features to production multiple times a week. ⭐️ Built a production AI matching engine (RozeeGPT, rozeegpt.ai) — OpenAI embeddings + RAG + Apache Solr, processing 5,000+ records weekly at ~90% accuracy. A live, clickable AI product, not a demo. ⭐️ Cut core search latency from 2s → 500ms (4x faster) through query optimization, indexing, and caching on a high-traffic platform. ⭐️ Designed the Laravel/PHP REST APIs powering 12+ external CRM integrations, keeping data reliable across systems for thousands of records a week. ⭐️ Built multi-agent AI systems — Rozeena (a Whats(App) career assistant where agents collaborate and hand off) and SerpDashboard (an SEO automation command center built with Claude Code + Cursor, with full role-based access control). ⭐️ Delivered 15+ production SaaS apps end-to-end on Upwork for US, UK, and Saudi clients — 100% satisfaction — across Stripe payments, AI integrations, and custom CRMs. ⭐️ AI-native developer — I build daily with Claude Code and Cursor: scope to the agent, own the architecture, verify before merge. 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