Freelancer profile translated to English.
Back to original languageAbout Willyam
I help SMEs that still work with Excel, Word, or manual processes to automate their business through custom CRM and business tools.
I support SMEs that need a CRM or ERP that is truly adapted to their processes (customer management, scheduling, 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 conventions and contracts eliminated repetitive tasks that took more than **4 hours/week per employee**. For three 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 kind of result I aim for on every project: identify time-consuming tasks, automate them, and deliver something that changes daily life.
What I work on:
- Custom CRM (customers, quotes, production, scheduling)
- Automation of repetitive administrative processes
- Automatic document generation (contracts, certificates, attestations…)
- Internal management tools (teams, tasks, interventions)
- Dashboards and reporting to manage business activity
- Integration of external APIs (invoicing, electronic signature, email…)
Each project is developed using 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 6 months)Design and development of a custom CRM / ERP using Symfony for SMEs, replacing scattered Excel files.For a client training organization, the automatic generation of conventions and contracts eliminated repetitive tasks that took more than4 hours/week per employee— that's€960/month recoveredfor 3 people at €20/hour. The tool pays for itself in less than a year and then belongs to the company.Modules developed:
- Customer, employee, and appointment management
- Scheduling and activity tracking organization
- Business process automation
- Automatic document generation (contracts, certificates, attestations…)
- Monthly invoicing per customer
- Convention signature tracking
- Attendance sheets for session validation
- Project planning export for the client
- Automatic quote generation
- Power BI export for business management
Integration of decision support features (intelligent task allocation, scheduling 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 scheduling.Results delivered:
- Intelligent scheduling managing recurrences, exceptions (absences, replacements, cancellations), and multiple assignments in real-time
- Redesigned management dashboard to accelerate daily decision-making
- Automatic task allocation and optimized scheduling suggestions via AI
- Reduced server consumption through in-depth 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, BarbadosFull 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 via **Ajax + JavaScript**.
- Integration ofChart.jsfor graphical visualization of user data.
- Use ofTwig macrosfor clearer, reusable, and maintainable code.
- Project management with **Trello**, from design to deployment.
- 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