Haroon K. Status: Offline
KarachiPakistan
100% Job Success
Top Rated

Full Stack & AI Developer| MVP & SaaS Development| React.js | Node.js

With 11+ years of experience as a Full-Stack and AI developer, I’ve delivered 30+ projects including 10+ MVPs (Web & Mobile Apps) and 8 AI-Powered solutions (computer vision, chat bots, AI voice agents, workflow automations) for Fortune 500s and startups which include healthcare, legal tech, social media and many more. Every project includes scalable architecture and documented code —so your app scales without costly legacy code nightmares. I have a 100% success rate because I get the job done right the first time. If I cannot deliver according to our agreed terms, I will provide a full refund.​ 𝑴𝒚 𝑻𝒐𝒐𝒍 𝑲𝒊𝒕: 🚀 MERN: Full stack development leveraging JavaScript technologies. 🌐 Frontend: React.js, React Native, Angular 2+, Next.js, HTML, CSS, Javascript 🟡Backend Node.js, Express.js, Nest.js, AWS Serverless, Python, Django, Flask, Fast API, APIs integration 🛠Databases: MongoDB, PostgreSQL, MySQL, Firebase/No SQL, DynamoDB) 💾Devops and Deployment: CI/CD Pipelines, Docker and Kubernetes, AWS, Azure, Server Configuration and Optimization, Security and Performance Enhancements. 🤖 AI Chatbot development: Designing intelligent bots for automated customer interactions. 📢 AI VoiceBots: Creating voice-activated applications for improved user accessibility. 🧠 AI-Powered Integration: Open AI, Chat GPT, Generative AI 𝑾𝒉𝒂𝒕’𝒔 𝒊𝒏 𝑰𝒕 𝒇𝒐𝒓 𝒀𝒐𝒖? When you work with me, you don’t just get a developer—you get a strategic partner. I take the time to understand your business, aligning technical solutions with your goals, challenges, and opportunities. Every feature is prioritized based on what drives the most value for you, not what's easiest to build. Plus, with weekly progress reports and bi-weekly syncs, you’ll always be informed—no chasing updates or unpleasant surprises. You’ll receive clean, maintainable code with well-documented architecture, ensuring long-term sustainability and preventing costly refactors down the line. Additionally, I provide two weeks of post-delivery support. If any bugs arise after user acceptance, I’ll fix them free of charge. 𝑨𝒃𝒐𝒖𝒕 𝑴𝒆: I am a full-stack AI developer with a 5-star rating across 19 upwork projects and a successful track record of delivering projects on time and within budget. With over 700+ hours billed and $20K+ earned on Upwork, I’ve helped clients at every stage which include developing MVPs from scratch, adding features to existing products/ SaaS platforms and optimizing code for speed and scalability. I have strong expertise in both front-end and back-end development—including APIs integration (Open AI, Stripe API etc) and Server Management with extensive experience in HTML, CSS, JavaScript, React.js, Node.js, Python, PostgreSQL and GraphQL APIs. On the custom AI development side, I specialize in building AI-Powered solutions such as AI agents, chatbots, and voice bots/agents using RAG, LangChain, LLM, Vapi, and the API integration. I have built multiple Generative AI models using advanced frameworks like GPT-4, Mistral, BERT, and other NLP technologies for text and speech processing. 🚀 𝑴𝒚 𝑷𝒓𝒐𝒄𝒆𝒔𝒔 My three-step process sets the cornerstone for your project success 𝟏. 𝐃𝐢𝐬𝐜𝐨𝐯𝐞𝐫𝐲: This phase entails analyzing your business goals, current systems, and project requirements. You get a detailed Product Requirements Document (PRD), outlining solution specifics, timelines, and milestones. 𝟐. 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: I build your product using Agile methodology, delivering working features every two weeks through structured sprints. Agile is all about teamwork, quick feedback and making continuous improvements to meet your needs at every step. 𝟑. 𝐌𝐚𝐢𝐧𝐭𝐞𝐧𝐚𝐧𝐜𝐞: After the deployment phase, I transition into providing ongoing maintenance and support—from bug fixes to feature enhancements and updates. I'm always accessible via call, SMS, or email, ensuring you can reach me whenever you need assistance. 📢 Ready to transform your idea into a top-notch web or mobile app? Contact me today for a free consultation, and let’s build something exceptional together!
Work history

Haroon K. has more jobs. Create an account to review them
Skills

Skills

  • React
  • Node.js
  • Web Development
  • JavaScript
  • Mobile App Development
  • API Integration
  • AI Development
  • Web Application
  • Python
  • Full-Stack Development
  • API
  • Next.js
  • OpenAPI
  • CSS
  • React Native

Get started working with Haroon quickly with these predefined projects.

Get started working with Haroon quickly with these predefined projects.

You will get AI-Powered Voice Bot Agent | Virtual Receptionist build for Automated Calls

From $397
3 days delivery

You will get AI Agent & Chat Bot developer | Voice Agent development | API Integration

From $99
1 day delivery

You will get a mobile app for ios and android using react native

From $500
7 days delivery

You will get Full-Stack Developer l Web applications & Web development | React | Node

From $150
2 days delivery

Testimonials

Endorsements from past clients

"Working with Haroon and his team was genuinely a standout experience. I needed two high-converting websites built — one for empowering.legal and the other for sellyourstartup.com — with strong emphasis on both design and security. Instead of defaulting to WordPress, they suggested building on Firebase, which turned out to be a great call. Security is non-negotiable in my line of work, and this setup gave me exactly the peace of mind I needed. The UI/UX was spot-on, especially the scroll transitions and subtle design details on sellyourstartup.com — I loved how it turned out. Haroon brought a full-stack perspective, which really showed in how smoothly everything came together, from the front-end design to the back-end integrations."

Syeda N.
Jun 2025

Verified


"Haroon and the Ehsaan Technologies team have been exceptional partners in bringing our vision to life. As the founder of Lucson, I needed a development team that could understand the complexities of our niche and deliver a seamless web and mobile platform. Haroon's expertise and dedication were evident from the start. He grasped our business model quickly, navigating the intricacies of our highly regulated services with ease. The MVP they delivered exceeded expectations—both in quality and user experience. If you need a team that’s skilled, responsive, and committed to your success, Ehsaan Technologies is the right choice."

Faizan J. | Co-Founder
SAAS Marketplace for freelancers in consultancy industry Sep 2024

Verified