A product vision
I challenge the scope before coding to focus the budget on the paths that truly create value.
Available for new projects
Your ideas become products.
Independent full-stack developer, I design MVPs, SaaS and business applications. I work on a fixed-price basis on a defined scope, or to reinforce your technical team.
An autonomous technical partner
10 years of experience, from product to infrastructure.
I transform a business need into a usable application, without multiplying intermediaries. You communicate directly with the person who frames, develops, deploys and documents your product.
Full-stack expertise
Interface, API, data, deployment and observability are designed together, without handoffs between multiple providers.
Direct collaboration
You communicate with the person doing the work. Decisions are documented and progress remains visible.
Fixed-price services
Three offers to move your product forward.
Each offer starts from a specific objective. The scope, deliverables, budget and timeline are confirmed before starting.
Before development
Technical framing
Turn an idea or business need into a concrete development plan before committing a larger budget.
€1,500
Fixed fee
- First version scope
- Priority user journeys
- Architecture and data model
- Structured development backlog
- Risks, budget and timeline estimated
Build and launch
MVP & custom application
A functional first version of your SaaS, business software or web application, focused on your main user need.
Starting at €7,500
Fixed price after framing
- Responsive web interface
- Back-end, API and database
- Authentication and access management
- Business workflows and administration
- Testing, deployment and documentation
- 30 days of bug fixes
Improve existing
Audit & action plan
Get a clear picture of your application's technical issues and the priority actions to take.
€1,350
Fixed fee
- Code and architecture analysis
- Front-end, API and data performance
- Technical debt and main risks
- Documented findings and measurements
- Prioritized and costed recommendations
Prices exclude VAT. VAT not applicable under the franchise scheme. The offers are a starting point: the final quote depends on the validated scope.
Staff augmentation
Need a senior developer to reinforce your team?
I work with CTOs, lead developers and product teams to develop features, take over a technical scope or strengthen delivery, directly or via Malt.
Starting at €450 / dayDepending on duration and context
Projects
Concrete products, designed and delivered.
SaaS, business tools, complex interfaces and infrastructure: projects where I handled much more than just screen integration.
Work method
Useful exchanges, visible progress.
Writing remains the main channel for keeping decisions and feedback documented. Synchronous meetings are short and organized when they genuinely help move forward.
- 01
Understand the need
You describe the context, users, expected outcome and constraints. A targeted exchange completes the brief if necessary.
- 02
Define the framework
For a fixed-price project, I formalize the scope, deliverables, budget and timeline. For a reinforcement mission, we define the pace and responsibilities.
- 03
Develop with visibility
You follow progress via the Git repository, tickets and intermediate versions. Important decisions remain documented.
- 04
Deliver and hand over
I prepare the production deployment, source code and documentation. Support or continuity terms are clearly defined.
I'm William
Senior full-stack developer, I work across the entire chain: product design, Vue.js and React on the interface side, Node.js on the server side, PostgreSQL for data, then Docker, CI/CD and Kubernetes for production.
My goal isn't to add as many features as possible, but to build the right first version, then a clear enough foundation to keep evolving.
Frequently asked questions
Before starting.
Do you work on a fixed-price or daily rate basis?
Projects with a clearly defined scope are offered at a fixed price. Team augmentation, evolving backlogs and collaborations with an existing team are billed starting at €450 per day.
What does the starting price of an MVP cover?
The price of €7,500 corresponds to a strongly framed first version, focused on a main journey. The number of roles, integrations, data migration and business complexity can evolve the quote.
Can you take over an existing application?
Yes. I usually start with an audit to understand the codebase, risks and priorities before proposing a correction sprint, progressive modernization or redesign.
Do I have to go through Malt?
No. You can contact me and contract directly, or go through Malt when your procurement process or company prefers it.
What technologies do you use?
I primarily work with TypeScript, Vue.js, Nuxt, React, Node.js, PostgreSQL, Docker, CI/CD and Kubernetes. The stack is chosen based on the need, team and product constraints.
Let's talk about your next product.
Describe your need, context and deadline. I'll respond within a business day with the most appropriate next steps.
Describe my project