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I'm Hafiz Muhammad Hassan Khan, a passionate full-stack developer based in Fulda, Germany, with 5+ years of experience delivering scalable web and mobile applications. I love turning complex requirements into intuitive user interfaces and robust back-end systems, focusing on performance, maintainability, and a great user experience. I specialize in React, Next.js, Node.js, GraphQL, and cloud-native technologies, and I enjoy collaborating with product and design teams in Agile environments to ship features that meet business goals and delight users.…I'm Hafiz Muhammad Hassan Khan, a passionate full-stack developer based in Fulda, Germany, with 5+ years of experience delivering scalable web and mobile applications. I love turning complex requirements into intuitive user interfaces and robust back-end systems, focusing on performance, maintainability, and a great user experience. I specialize in React, Next.js, Node.js, GraphQL, and cloud-native technologies, and I enjoy collaborating with product and design teams in Agile environments to ship features that meet business goals and delight users.

Hafiz Muhammad Hassan Khan

Full Stack Developer, Web Developer, Front-End Developer, +3

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I'm Hafiz Muhammad Hassan Khan, a passionate full-stack developer based in Fulda, Germany, with 5+ years of experience delivering scalable web and mobile applications. I love turning complex requirements into intuitive user interfaces and robust back-end systems, focusing on performance, maintainability, and a great user experience. I specialize in React, Next.js, Node.js, GraphQL, and cloud-native technologies, and I enjoy collaborating with product and design teams in Agile environments to ship features that meet business goals and delight users.…I'm Hafiz Muhammad Hassan Khan, a passionate full-stack developer based in Fulda, Germany, with 5+ years of experience delivering scalable web and mobile applications. I love turning complex requirements into intuitive user interfaces and robust back-end systems, focusing on performance, maintainability, and a great user experience. I specialize in React, Next.js, Node.js, GraphQL, and cloud-native technologies, and I enjoy collaborating with product and design teams in Agile environments to ship features that meet business goals and delight users.

Available to hire

I’m Hafiz Muhammad Hassan Khan, a passionate full-stack developer based in Fulda, Germany, with 5+ years of experience delivering scalable web and mobile applications. I love turning complex requirements into intuitive user interfaces and robust back-end systems, focusing on performance, maintainability, and a great user experience.

I specialize in React, Next.js, Node.js, GraphQL, and cloud-native technologies, and I enjoy collaborating with product and design teams in Agile environments to ship features that meet business goals and delight users.

Skills

Experience Level

Expert

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Intermediate

Language

English

Fluent

German

Intermediate

Work Experience

Full Stack Developer at Drox Labs

June 1, 2025 - October 7, 2025

Developed a cross-platform voice assistant using React Native, Node.js, and Python, integrating ASR and LLM-powered NLP for real-time voice commands. Reduced speech processing latency by 52% using asynchronous operations and caching. Designed reusable UI components with React Hooks, Context API, and TypeScript, improving mobile performance by 40%.

Full Stack Developer at BlockApex

December 1, 2023 - October 7, 2025

Built a multi-chain crypto wallet browser extension with React.js, TypeScript, and Web3.js, compatible with EVM-based chains. Decreased transaction processing time by 35% by optimizing state management (Redux) and real-time data sync. Created responsive, accessible dashboards with WCAG-compliant UI, supporting dark/light modes and mobile-first design.

Full Stack Developer at Xord

June 1, 2023 - October 7, 2025

Architected the frontend for a blockchain wallet app featuring zkRollup and Layer 2 scaling—cut gas fees by 28%, improved throughput by 3 ×. Integrated OpenCV and TensorFlow for facial recognition in enterprise attendance systems, reducing manual checks by 90%. Delivered frontend features (QR transfers, fee estimators, history views) in 2-week sprints, achieving a 98% on-time release rate.

Working Student - Full Stack Developer at PvFritz UG

November 1, 2025 - Present

Developing and enhancing user interfaces for existing web applications using modern frontend technologies. Contributing to full-stack development efforts by implementing, testing, and optimizing UI components aligned with project requirements.

Full Stack Developer at DroxLabs

January 1, 2024 - June 1, 2025

Developed a cross-platform voice assistant using React Native, Node.js, and Python, integrating ASR and LLM powered NLP for real-time voice commands. Collaborated across teams to ensure frontend-backend integration, following agile development practices.

Full Stack Developer at Block Apex

June 1, 2023 - December 1, 2023

Built a multi-chain crypto wallet browser extension with React.js, TypeScript, and Web3.js, compatible with EVM-based chains. Created responsive, accessible dashboards with WCAG-compliant UI, supporting dark/light modes and mobile-first design.

Full Stack Developer at Xord

October 1, 2020 - June 1, 2023

Architected the frontend for a blockchain wallet app featuring zk Rollup and Layer 2 scaling — cut gas fees by 28% and improved throughput by 3×. Integrated OpenCV and TensorFlow for facial recognition in enterprise attendance systems, reducing manual checks by 90%.

Full Stack Developer at Pfritz UG

November 1, 2025 - January 1, 2026

Develop and enhance user interfaces for production web applications using React, TypeScript, and modern front-end frameworks. Implement responsive, accessible UI components following WCAG standards and mobile-first design principles. Collaborate with cross-functional teams in an agile environment to deliver features aligned with business requirements.

Full Stack Developer at Drox Labs

January 1, 2024 - June 1, 2025

Engineered a cross-platform voice assistant application using React Native, Node.js, and Python with integrated Automatic Speech Recognition (ASR) and LLM-powered Natural Language Processing for real-time voice command processing. Designed RESTful APIs and GraphQL endpoints to support mobile app features and data synchronization. Collaborated with product and design teams in agile sprints to ensure seamless frontend-backend integration and optimal user experience.