derxxey

Cross-Platform Business & Service Applications

Freelancer.com • Freelance

Feb 2026 - Feb 2026 • 0 mos

Developed high-performance mobile applications for Android and iOS focused on usability, speed, and clean architecture. Built custom dashboards, real-time data sync systems, payment integrations, and API-driven mobile platforms. Implemented secure authentication systems, push notifications, and cloud-based backend connectivity to ensure smooth performance across devices. Collaborated with UI/UX designers to transform wireframes into production-ready mobile applications optimized for user retention and scalability.

Custom Business Systems & SaaS Solutions

Upwork • Freelance

Feb 2026 - Feb 2026 • 0 mos

Led the architecture and development of scalable web and SaaS applications for startups and growing businesses. Designed secure backend systems, RESTful APIs, and responsive front-end interfaces tailored to business workflows. Delivered CRM, ERP, POS, and Inventory Management systems with advanced reporting, role-based access control, and financial logic integration. Optimized database performance, reduced server response time, and ensured application scalability for high user traffic. Worked directly with founders and stakeholders to translate business requirements into structured, maintainable software solutions that improved operational efficiency and revenue tracking.