Santosh Kumar

Software Developemnt

Self • Freelance

Aug 2017 - Present • 9 yrs 1 mo

Freelance Mobile App & website Developer Self-Employed | Jan 2017 – Present | Remote As a freelance Mobile & website App Developer, I design, develop, and deploy high-performance mobile applications for startups, entrepreneurs, and growing businesses worldwide. I specialize in building scalable, user-friendly applications for iOS and Android platforms. Key Responsibilities: Develop cross-platform and native mobile applications using Flutter, React Native, Swift, and Kotlin Translate client requirements into functional, visually appealing mobile solutions Integrate RESTful APIs, third-party services, and cloud-based backends (Firebase, Node.js) Implement secure authentication, payment gateway integration, push notifications, and real-time features Optimize app performance, reduce crash rates, and improve UI/UX Manage complete app lifecycle: concept, development, testing, deployment, and maintenance Publish and maintain apps on Google Play Store and Apple App Store Selected Projects: • E-Commerce Mobile App – Built a scalable shopping platform with secure payments and real-time order tracking, achieving 50K+ downloads in the first 6 months. • Fitness Tracking App – Developed a health monitoring app with progress dashboards and wearable integrations. • Food Delivery Application – Created a real-time GPS-enabled delivery system with admin dashboard support. • Healthcare Booking App – Designed a secure appointment and video consultation platform with advanced data protection measures. Core Skills: Mobile App Development | Flutter | React Native | Swift | Kotlin | Firebase | REST APIs | UI/UX Collaboration | App Deployment | Agile Development