Publication
Client-side vs. Server-side vs. Pre-rendering for Web Apps
https://www.toptal.com/front-end/client-side-vs-server-side-pre-rendering
Guillaume is available for hire
Hire GuillaumeGuillaume Breux
Verified Expert in Engineering
JavaScript Developer
Location
La Massana, Andorra
Toptal Member Since
July 23, 2018
Guillaume is a customer-centered front-end developer leading with agility and a designer’s eye for detail to deliver an optimal user experience. He transforms an idea from conception to application to revenue driver, making thoughtful business and design decisions throughout development and lifecycle. Guillaume is a humble team player leading by influence and genuine passion for crafting solutions by speaking the languages of designers, developers, and users in fostering smart collaboration.
Portfolio
Freelance
Front-end Development, React, JavaScript, Product Management
Wanted—Acquired by Revolut
Next.js, JavaScript, Product Management
Once
Webflow, Jekyll, Angular, React
Experience
Availability
Part-time
Preferred Environment
VSCodium, Git, MacOS
The most amazing...
...thing I've built is a company trying to improve the way companies hire people with a more transparent and fair approach.
Work Experience
Front-end Developer | Team Lead | Tech Recruiter Support
2015 - PRESENT
Freelance
- Designed and implemented a Web3 NFT project on the Ethereum blockchain.
- Selected, tested, interviewed, and led a UI developer in helping scale a company maintaining a user-focused culture.
- Made the data-backed business case for a company to deploy a more user-focused approach to services. The effort resulted in hiring a designer and a UI developer and the development of team-centered processes.
- Trained engineers and designers on design tools like Figma, fostering a shared language and improving overall collaboration.
- Joined the Toptal exclusive network and wrote a paper in their highly respected blog for the occasion.
- Redesigned and integrated a 20-year-old, highly specialized media platform in the French healthcare industry.
- Onboarded and coached a developer with specific knowledge that enabled project independence.
Technologies: Front-end Development, React, JavaScript, Product Management
Co-Founder and CXO
2019 - 2021
Wanted—Acquired by Revolut
- Delivered an international web application, managed its development, and scored 100% on the last performance rating technologies.
- Implemented the front-end architecture for all necessary services and developed Chrome plugins for growth hacking and moderation.
- Executed strategy, testing, refinements, and a privacy-first approach, gathering direct feedback from talents and companies.
Technologies: Next.js, JavaScript, Product Management
Lead Front-end Developer
2015 - 2019
Once
- Played a key role in the startup’s success and the holistic web experience that led to the $18M sale of Once.
- Adapted design to an optimized desktop version that outperformed both iOS and Android KPIs for LTV, acquisition cost, traffic to lead, and key actions.
- Built the CRM strategy to send customized, thoroughly tested emails to 9 million guests.
- Implemented a front-end development strategy to minimize the need for a DevOps team, forging a fully independent service at a meager cost using a serverless AWS strategy.
- Collaborated with the product team on new features, making a case for changes and gathering data to verify hypotheses.
Technologies: Webflow, Jekyll, Angular, React
Photographer
2010 - 2015
Freelance
- Helped deliver a commercial for Samsonite, working with cinema-grade equipment.
- Found relevant spots and advised lights and equipment to create the art project—Queer Kids—documenting LGBTQ youth in Belgium.
- Edited a complete set of fine art pictures for high fidelity print.
- Automatized a setup to deliver a couple of thousand luxury hats pack-shots.
Technologies: Product Photography, Global Project Management
Experience
Wanted
We started Wanted to make sure people get paid what they deserve, regardless of gender, race, or how well someone negotiates.
It is the first platform designed to poach the best talent at their desired salary.
Demo: https://demo.getwanted.com
Milestones:
• $2m Pre-seed from Hoxton, Partech & Kima
• 100k+ vetted talent @ CPA under $3
• Beta clients: Facebook, Lodestone, Cembra among others
It is the first platform designed to poach the best talent at their desired salary.
Demo: https://demo.getwanted.com
Milestones:
• $2m Pre-seed from Hoxton, Partech & Kima
• 100k+ vetted talent @ CPA under $3
• Beta clients: Facebook, Lodestone, Cembra among others
Once Dating
https://getonce.comOnce is the number 1 slow dating service in Europe with 9 million users.
I joined Once pre-product and was in charge of making sure our guests browsed the web version like they were using a native application and developing all the web services the company needed. Every decision was made to improve the holistic experience that led to an $18 million exit.
I joined Once pre-product and was in charge of making sure our guests browsed the web version like they were using a native application and developing all the web services the company needed. Every decision was made to improve the holistic experience that led to an $18 million exit.
Skills
Languages
SCSS, CSS, HTML, JavaScript, Less
Frameworks
Next.js, Redux, Angular
Libraries/APIs
Flexbox, React, Web3.js
Tools
Sketch, Figma, Git, IntelliJ IDEA, Jekyll
Paradigms
BEM, Search Engine Optimization (SEO)
Other
Serverless, SVG, Responsive UI, Front-end Development, Front-end Architecture, CSS Grid, Product Management, VSCodium, Creativity, Computer Graphics
Platforms
Webflow, MacOS
Education
2014 - 2015
Professional Degree in Web Design and Front-end Development
CEPEGRA | Center Competence Forem Cepegra - Brussels, Belgium
2010 - 2013
Bachelor's Degree in Photography
INRACI | Institut National de Radioélectricité et Cinématographie - Brussels, Belgium
2009 - 2010
Coursework Completed Toward a Bachelor's Degree in Computer Graphics
HEAJ | Haute École Albert Jacquard - Namur, Belgium
Collaboration That Works
How to Work with Toptal
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1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
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