Freelancer profile translated to English.
Back to original languageAbout Willyam
I design custom business tools that save an average of 4 hours per week per employee — and pay for themselves in less than a year.
I help SMEs that need a tool truly adapted to their processes (customer management, planning, production, invoicing, automation), rather than trying to fit their organization into standard software.
My job: understand how you work, identify what wastes your time, and design a clear, efficient, and scalable application that your team actually uses.
A concrete example: for a training organization, the automatic generation of agreements and contracts eliminated repetitive tasks that took more than4 hours per week per employee. For 3 people at €20/hour, that's€960/month recovered— a tool that pays for itself in less than a year, and then belongs to the company.
This is the type of result I aim for on every project: identify time-consuming tasks, automate them, and deliver something that changes the daily routine.
What I work on:
- Custom CRM (customers, quotes, production, planning)
- Automation of repetitive administrative processes
- Automatic document generation (contracts, certificates, attestations…)
- Internal management tools (teams, tasks, interventions)
- Dashboards and reporting for activity monitoring
- Integration of external APIs (invoicing, electronic signature, email…)
Each project is developed under Symfony with a clean, maintainable architecture designed to grow with your business.
Do you have a process that takes too much time or a tool that no longer suits you? Describe your situation to me — I'll study the feasibility for free.
French
Native or bilingual
English
Fluent
Spanish
Basic
Can work on-site
Lyon (up to 50km)
Experience
- CoreMagisSymfony Developer – Custom CRM / ERP DesignFebruary 2025 - Today (1 year and 4 months)Design and development of a custom CRM / ERP under Symfony for SMEs, replacing scattered Excel files.For a client training organization, the automatic generation of agreements and contracts eliminated repetitive tasks that took more than4 hours per week per employee— that's€960/month recoveredfor 3 people at €20/h. The tool pays for itself in less than a year and then belongs to the company.Modules developed:
- Customer, employee, and appointment management
- Planning organization and activity tracking
- Business process automation
- Automatic document generation (contracts, certificates, attestations…)
- Monthly invoicing per client
- Tracking of agreement signatures
- Attendance sheets for session validation
- Project planning export for the client
- Automatic quote generation
- Power BI export for activity monitoring
Integration of decision support features (intelligent task allocation, organization suggestions).Modular and fully customizable architecture, designed to adapt to the specific processes of each company and evolve over time. - Multipatte,Symfony Developer – CRM RedesignDIGITAL AND ITJune 2025 - August 2025 (2 months)Saint Joseph, BarbadosComplete redesign of an internal CRM that had become too rigid for operational needs — objective: performance, faster decision-making, and friction-free planning.Delivered results:
- Intelligent planning managing recurrences, exceptions (absences, replacements, cancellations), and multiple assignments in real-time
- Management dashboard redesigned to accelerate daily decision-making
- Automatic task allocation and optimized planning suggestions via AI
- Reduced server consumption through advanced query optimization (Green IT approach)
- Modular and scalable architecture, adaptable to other business contexts
- Multipatte,Full Stack PHP and Symfony Developer (Apprenticeship)April 2023 - May 2025 (2 years and 1 month)Saint Joseph, BarbadosComplete development of a personal development web applicationallowing users to define and achieve their goals step by step.*100% responsiveapplication offering a fluid experience on mobile, tablet, and desktop.
- Implementation of aSymfony APIfor dynamic updates viaAjax + JavaScript.
- Integration ofChart.jsfor graphical visualization of user data.
- Use ofTwig macrosfor cleaner, reusable, and maintainable code.
- Project management with **Trello**, from design to production.
- Performance optimization and bug tracking to ensure application stability.
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Education
- Concepteur Développeur D'applicationsISCOD Lyon2025Concepteur Développeur D'applications
- Computer Science DegreeUniversité Lumière Lyon 22023Licence d'Informatique