
Ziyan Shaikh
Senior Mobile App Engineer iOS Android React Native
Skills

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Portfolio
Work experience
Freelance Mobile App Developer
Self Employed • Freelance
Jan 2025 - Present • 1 yr 8 mos
• Worked directly with international and Indian clients to design, develop, and deploy production-ready mobile applications across iOS, Android, and cross-platform environments. • Managed the complete development lifecycle, including requirements analysis, technical planning, architecture, development, API integration, testing, optimization, and App Store deployment. • Built native iOS applications using Swift and Objective-C, cross-platform applications using React Native, and contributed to Android development when required. • Integrated REST APIs, Firebase, authentication, push notifications, payment systems, third-party SDKs, BLE/IoT functionality, and other modern mobile technologies. • Collaborated closely with clients to transform business requirements into practical and scalable technical solutions with a focus on performance, security, maintainability, and intuitive UI/UX. • Provided ongoing maintenance, troubleshooting, performance improvements, bug fixing, and production support to ensure reliable application delivery. • Worked across multiple domains and project types, adapting technical solutions to different business requirements and product goals.
Senior Software & Mobile App Engineer
Cmarix Technolabs Pvt Ltd • Full-time
Apr 2023 - Jan 2025 • 1 yr 9 mos
• Delivered and scaled production-ready digital products for global clients across HealthTech, E-commerce, SaaS, and business platforms. • Owned end-to-end development including architecture decisions, feature implementation, performance optimization, and deployment. • Built solutions using cross-platform and native technologies based on project needs, not tool bias. • Collaborated with designers, backend teams, QA, and stakeholders to ensure high-quality and on-time delivery. • Mentored developers, improved code quality, and contributed to long-term product stability and scalability.
Software & Mobile Application Developer
Amin softech LLP • Full-time
Apr 2018 - Mar 2023 • 4 yrs 11 mos
• Developed full-scale digital applications across social platforms, e-commerce systems, and enterprise business solutions. • Worked on complete product lifecycles — planning, development, API integration, optimization, and maintenance. • Delivered multilingual and region-specific applications for international markets. • Implemented complex features such as authentication systems, payments, real-time data handling, notifications, and analytics. • Focused on clean, secure, and maintainable code to support long-term growth.