Emeric Guyon, freelance fullstack web developer based in Chambéry, France

Senior freelance fullstack developer. I help startups and tech teams build the right thing, and build it right.

Product-minded developer. I don't just write code, I help you ship the right thing.

Freelance fullstack developer with over ten years of experience. I've worked with startups, scale-ups and large organizations, from MVP to production, from a single feature to a full platform.

I think product before component. I challenge specs, question priorities, and chase ROI. When I join a team, I understand the "why" before I code the "how". That's how I avoid building the wrong thing.

React, Next.js, Vue.js, Nuxt, TypeScript, Node.js, Symfony, and custom WordPress when it's the right fit. AI is part of my daily workflow: it speeds up delivery, I make sure the quality holds.

Experience
Freelance · Fullstack developer2025 – present

MyRole, INRIA, Lönn, Elite Trackr

Patriarche · Senior front-end developer2022 – 2024

Patriarche, Ekkinox, 25 lieux d'innovation

DATASOLUTION · Web developer2021 – 2022

EvianChezVous, Mieux Voir, NutriciaStore

NewQuest · Web developer2010 – 2021

My Evian, Chocolat De Neuville, Mieux Voir, Bragard

Two ways to work together.

Depending on your need: a reinforcement that fits into your team, or a project delivered turnkey. Either way, we talk it through first. Honest answer within 48 h.

01 · Staff augmentation

A reinforcement that adapts

A senior profile who embeds in your team, for as long as it takes.

Available as
Frontend expert
  • Embeds in your team (Slack, dailies, sprints)
  • Remote or on site
  • From POC to scaling up
  • Flexible engagement, for as long as it takes

Availability & day rate shared on request

02 · Fixed scope

A project delivered turnkey

One idea, one deliverable. I handle everything, from design to launch.

Based in Chambéry. Savoie, Annecy, Lyon, Grenoble, Paris, or fully remote.

Detailed, free quote within 48 h

Whether on staff augmentation or fixed scope, here are the areas I work on day to day.

Build something new

Web apps, SaaS platforms, business tools, from technical scoping to deployment. I build products designed to last, not just to ship.

Fix or modernize what you have

Stack modernization, framework migration, legacy refactoring. I take over existing code and evolve it without breaking things.

Make it faster and more visible

Audit, Core Web Vitals optimization, SSR, lazy loading. Measurable gains in speed and search rankings.

Get the architecture right

Stack selection, technical architecture, code review. I step in upstream to lay the right foundations before a line of code is written.

Add AI where it actually helps

AI API integration (OpenAI, Claude, etc.), automated workflows, smart features. AI serving your product, not the other way around.

Reinforce your team

I embed in your sprints, your processes, your tools. Solo or paired, I adapt to your pace and your standards. Operational from day one.

Reply within 48 hNo commitmentRemote or on site
01

We talk

You describe your need, a project to deliver or a mission to reinforce. Free and with no commitment.

02

I propose

I come back within 48 h with a clear proposal: scope, timeline, and an honest budget (or day rate).

03

We move forward

We start step by step, with regular check-ins. You keep full visibility from start to finish.

A project or a mission? Describe it to me, I'll tell you honestly if I can help.

Reply within 48 h, always free, never any sales fluff.

The right tools for every project, tailored to your technical needs.

Other projects I've worked on.

BragardZeina-alliancesMumstoreDirectNutriciaLa belle mècheCafé CotonGrandvillage GroupamaMy EvianNutriciaStoreBioseptylGaspard et ZoéChocolat De NeuvilleAu jardin des plantesPrecision SkiMilkDirectFenril1001 OpticiensAnonymSupCasque-motoMyPiscineMieux VoirBlédinaLe Slip FrançaisEDHECTerra mentadVélosLa revue des montresKériaDéco Saveurs

Tell me about your project. I'll be straight with you about whether I can help.

Senior freelance fullstack developer. I help startups and tech teams build the right thing, and build it right.

Based in France, fully remote or on-site depending on the project. Lyon, Grenoble, Annecy, Paris…