“One of the most loyal engineers I know.”
I’m Sylvain, a senior full-stack engineer with 10 years of building and running products. Product, architecture, infrastructure and AI, on fixed scopes and public prices, with no account managers in between.
Previously worked with
Services
Three fixed-scope projects and a monthly subscription. Every engagement starts with the same free 20-minute call.
Best for: an app with real users and growing problems.
Your app was built fast, by AI, an agency or freelancers, and now real users depend on it. I make it production-ready: a cleaner codebase, a smoother experience, and the bugs fixed.
Best for: teams running on spreadsheets and manual re-entry.
Web apps and internal tools that replace spreadsheets and manual re-entry, connected to your current software.
Best for: teams losing hours to repetitive admin.
One business process automated end to end: quotes, invoices, follow-ups, email triage, data entry.
A senior lead, without hiring full-time. For startups and SaaS teams that need senior dev expertise with an undefined scope.
$10,000per month
3-month minimum, then cancel anytime with 2 weeks’ notice.
Book a callPrefer email? Write to meTestimonials
Sylvain couples sharp software instincts with an uncommon entrepreneurial mindset. One of the most loyal engineers I know.
With a free 20-minute call. I then send a scope and a quote. Once the quote is signed and the deposit paid, I get to work and deliver async.
I work with a small number of teams at a time. If you need a senior engineer who takes full ownership, without hiring full-time, let’s talk.
Based in France. English communication, async by default.