L o a d i n g
Contact
Contact
HI
Hi, I'm Guillaume Voisin

Building SaaS Products
That Work

With over 10 years of experience, I help companies build reliable, scalable web applications. From Ruby on Rails backends to Vue.js frontends, I focus on writing clean code that's maintainable and user-friendly.

Download CV
0+
Years of
Experience
0
Web apps Built
From Scratch
0K
Hours
of Coding
0
Years Working
Remotely

How I Can Help

Full-stack expertise to take your project from concept to production

01

Frontend Code

I specialize in creating intuitive, responsive interfaces that users enjoy. Whether it's a complex dashboard or a simple landing page, I focus on making every interaction smooth and intentional.

Vue.js Pinia Nuxt React Redux (Rematch) React Native TailwindCSS JavaScript
02

Backend Code

I write clean, maintainable backend code using proven patterns like Service Objects. My focus is on building systems that are easy to test, debug, and extend as your application grows.

Ruby Ruby on Rails RSpec PostgreSQL MySQL Sidekiq Redis Docker
03

UI Design

Beyond coding, I can help shape the user experience by designing wireframes and mockups. This allows me to bridge the gap between concept and implementation.

Wireframe Figma
04

DevOps

I handle the full deployment pipeline—from server configuration to CI/CD setup and automated deployments. This ensures your application runs smoothly and can scale when needed.

Firewall Unix SSH NGINX SSL certificates Auto-updates Crons Bash scripts Systemd CI/CD Capistrano

Selected Projects

A mix of contract work and personal projects, each solving real problems for real users

Effilab

Digital marketing platform leveraging AI for campaign optimization

FairPay

E-commerce platform for content creators

Smart Prépa

Educational platform for exam preparation and student success

WizVille

Customer feedback and satisfaction management platform

Teachee.io

Complete teaching platform for remote language instructors

DevsOnRails

Snippet manager

Mingle Maps

Event discovery app connecting people with local happenings

Language Tutors Marketplace

Two-sided marketplace connecting language learners with tutors

WizVille

They are was greater open above shelter lets itself under appear sixth open gathering made upon can't own above midst gathering gathered he one us saying can't divide.

Category
Web Design
Client
Artboard Studio
Start Date
August 20, 2023
Designer
ThemeJunction

Project Description

The goal is there are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable.

There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text.

The story

There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text.

OUR APPROACH

There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text. There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don't look even slightly believable. If you are going to use a passage of Lorem Ipsum, you need to be sure there isn't anything embarrassing hidden in the middle of text.

Previous Project

Sebastian
Next Project

Qwillo

About Effilab

Effilab is a leading digital marketing agency specializing in performance-based advertising and online marketing strategies. The company partners with businesses across various industries to optimize their digital advertising efforts on platforms like Facebook, Instagram, LinkedIn, and Google.

Effilab is known for its data-driven approach, helping clients achieve significant returns on investment through precise targeting and campaign optimization.

Context

Effilab has an internal team dedicated to developing and maintaining tools that streamline the daily operations of their Product Managers (PMs). This team, composed exclusively of senior developers, plays a crucial role in enhancing the effectiveness and efficiency of Effilab's advertising campaigns. As part of this elite team, my role was to contribute to the ongoing development of internal tools that PMs rely on to optimize campaign performance, ensuring they have the best possible interface and experience when managing complex advertising strategies.

My contribution

I was responsible for designing and implementing user-friendly interfaces (UIs) for the internal tools used by Effilab’s Product Managers. My focus was on creating intuitive, efficient, and aesthetically pleasing UIs that significantly enhanced the user experience. These UIs were designed to make complex data and campaign management tasks more accessible and straightforward, ultimately empowering PMs to optimize campaign performance with ease. My contributions helped streamline the workflow, reduced the time required for campaign adjustments, and allowed the PMs to focus more on strategic decision-making, thereby driving better results for Effilab's clients.

My Experience

2023 - Present

Co-Founder & CTO hands-on

FairTech, Budapest
2015 - 2023

Full Stack Ruby Developer

Contractor, Europe
2014 - 2015

Full Stack Ruby Developer

WizVille, Paris

My Education

2011 - 2013

Software Architect

ETNA, Paris
2008 - 2011

Bachelor of Science in CS & IT

Supinfo, Rennes
2006 - 2008

Plastic Arts

Rennes 2 University, Rennes

Core Technologies

Specialized in Ruby and Vue.js, with experience across modern web technologies

10+ yrs

Ruby

10+ yrs

JavaScript

10+ yrs

PostgreSQL

6 yrs

Vue

2 yrs

K8s

Let's Work Together

I'm available for freelance projects and contract work. Whether you need help with a legacy system, a new feature, or building something from scratch—let's talk.