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derxxey
@derxxey
Your Go To Developer for Web Apps, SaaS, Mobile And Desktop Software
United States
English, French, German, Spanish
About me
I am a full-stack software developer specializing in high-performance Web Applications, Mobile Apps, SaaS platforms, CRM/ERP systems, and custom Desktop Software.
I build scalable digital products that solve real business problems and generate measurable growth. From MVP development for startups to complex enterprise systems, I focus on clean architecture, secure backend logic, and intuitive user experiences that users love.
Skills
derxxey
Offline •
Average response time: 1 hour
See my services
Full Stack Web Applications
I will be full stack software developer, ai web app, odoo, CRM, pos desktop app ai saas
Full Stack Web Applications
I will website development software web app, php laravel react node developer, CRM erp
Portfolio
Work experience
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.
7 Reviews
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Rating Breakdown
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- Quality of delivery
- Value of delivery
1-5 out of 7 Reviews
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Most relevant
henry_charli
United Kingdom
Helpful?
olas00111
Repeat Client
United States
A great experience working together. He handled the project professionally and delivered exactly what I needed
Helpful?
olas00111
Repeat Client
United States
Excellent developer! Delivered the project exactly as required, with great attention to detail and professionalism throughout.
Helpful?
bassar1122
Repeat Client
Germany
Thanks for your satisfied delivery. Your communication and professionalism really shows in your work.
Helpful?
bassar1122
Repeat Client
Germany
Perfect delivery. Let move to the next step of the project. The delivery is very amazing and exceed my expectations, looking forward to finishing the whole system with you.
Helpful?
