You will get a custom CRM, ERP, or admin dashboard for your business
Rising Talent
Rising Talent
Project details
Most CRMs built on Upwork end up as messy code, no documentation, impossible to scale. I work the opposite way.
I am Youssef, founder of Webign, freelance designer-developer based in Paris with five years in web and mobile. I design and code, which closes the gap between specs and shipped product.
WHAT YOU GET
A fully custom CRM, ERP, or admin dashboard built around your workflow. Multi-role users, secure auth, clean database design, role-based permissions, data visualization, integrations (Stripe, REST APIs, third-party tools). Source code, docs, deployment included.
WHY THIS LISTING
I built the full backoffice of my live mobile app Tayyib, with admin dashboard, user analytics, da
I am Youssef, founder of Webign, freelance designer-developer based in Paris with five years in web and mobile. I design and code, which closes the gap between specs and shipped product.
WHAT YOU GET
A fully custom CRM, ERP, or admin dashboard built around your workflow. Multi-role users, secure auth, clean database design, role-based permissions, data visualization, integrations (Stripe, REST APIs, third-party tools). Source code, docs, deployment included.
WHY THIS LISTING
I built the full backoffice of my live mobile app Tayyib, with admin dashboard, user analytics, da
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$350
|
Standard
$1,250
|
Advanced
$2,950
|
|---|---|---|---|
| Delivery Time | 14 days | 21 days | 30 days |
Number of Revisions | 1 | 3 | 5 |
Number of Pages | 5 | 10 | 20 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code | - |
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DD
Dino D.
May 13, 2026
Website Developer for Luxury Real Estate
Youssef helped me improve the design of my home page and the result is exactly what I had in mind. Modern look, cleaner structure, mobile responsive, and delivered within the timeline we agreed on. Communication was clear throughout and he was quick to come back on questions and small adjustments. Easy to work with from start to finish. Will definitely work with him again on future improvements to the site.
About Youssef
Full-Stack Developer | Web & Mobile Apps
Paris, France - 11:39 pm local time
My main stack includes Flutter for mobile, Next.js, React, TypeScript and JavaScript for the web frontend, Node.js and Express for backend services, and Supabase, PostgreSQL and Firebase for databases. I also work with Tailwind CSS, Material UI, Framer and Figma for design and visual implementation. As a Full-Stack developer, I build mobile applications with Flutter and React Native, SaaS platforms, marketplaces, admin dashboards, booking systems, CRM platforms, e-commerce solutions, and internal tools.
Recent work: Tayyib, a mobile app currently live on the App Store and Google Play in France and Belgium, three CRM platforms delivered for driving schools, training centers and accounting firms with multi-role architecture, scheduling, invoicing and clear dashboards, and several brand websites built end to end with Figma design and a clean Framer or Next.js implementation.
My work as a Full-Stack developer covers frontend architecture, backend logic, third-party integrations (Stripe, Stripe Connect, Firebase Auth, OAuth), authentication flows, payment systems, performance optimization, SSR with Next.js, and PWA applications. I write code that is clean, readable, and easy to maintain, always keeping in mind the business goals behind every feature.
My services as a Full-Stack developer include React and Next.js development, TypeScript applications, Flutter and React Native mobile apps, API integration, database design, design systems, performance optimization, codebase refactoring, fast MVP builds, and ongoing product support.
I work async by default with regular written status updates, so you always know exactly where the project stands without scheduling calls. I am multilingual (French, Italian, Arabic, English, Spanish), which makes me a particularly good fit for projects touching European and international markets. I am also the founder of a small dev agency based in Paris.
Best fit if you are a founder, a small team, or an agency who needs a reliable Full-Stack developer to take over an existing codebase, accelerate development, or build something new from a clear brief. Whether you need a Full-Stack developer for an MVP, a technical refactor, product expansion, or to strengthen your current team, I bring solid technical execution and clear communication.
Send me a few lines about your project and where you are stuck, I respond fast.
Best regards,
Youssef
Steps for completing your project
After purchasing the project, send requirements so Youssef can start the project.
Delivery time starts when Youssef receives requirements from you.
Youssef works on your project following the steps below.
Revisions may occur after the delivery date.
Project Brief & Architecture Plan
I review your filled requirements in detail, confirm scope and priorities, and define the system architecture (entities, relationships, user roles, integrations). We align on the technical approach and stack before any code is written.
Database & Data Model Design
I design the database schema with all entities, relationships, fields, and constraints. This phase locks the foundation of your CRM/ERP and prevents costly refactors later. You receive the model for review before development starts.