We build high-performance digital platforms for B2B brands

To address your growth challenges, we design marketing websites, e-business platforms, corporate sites, intranets and custom client portals.

At Welp agency, we focus on satisfying your clients and users to help you reach your goals.

Our approach is guided by three core principles: proximity in the relationship, excellence in execution and friendliness in day-to-day collaboration.

We work with SMEs, mid-sized companies and large enterprises that make digital a true growth driver: deploying an international platform, generating qualified leads, or enriching the customer experience.

The quality of our projects relies on a deep understanding of your challenges, proven technologies to accelerate development, and above all, lasting relationships. This combination is what allows us to build high-performing, sustainable digital ecosystems.

We are proud to work with leading brands across their markets

Audrey Dumy Head of Communication Simago
For over three years, Welp agency has become a truly trusted partner. They support us with a remarkable level of rigour and efficiency in the creation and optimisation of our digital platforms. Their deep understanding of our challenges, their ability to deliver consistently relevant solutions, and their strategic yet hands-on approach make all the difference.

Our projects are driven by your growth challenges

Do any of these challenges resonate with you?
That's a good reason to reach out to Welp agency.

Contact us

Welp agency work

  • Development of Cegid.com, Contasimple, Guide Facturation Électronique, Bim By Cegid
  • Development of several internal sites: communications, communities of expertise, etc.
  • Analytics & compliance: Piwik Pro, GTM, Consent Manager
  • Ongoing maintenance of all delivered sites

A partnership with Lukla Group since 2016

Cegid preview
+25 sites built & maintained
Cegid - Desktop view
Cegid - Mobile view

Welp agency work

  • Development of the Simago network corporate website
  • Development of an ecosystem of 15+ group centre sites for local network visibility
  • Analytics & compliance: Google Analytics, GTM, OneTrust, Looker Studio
  • Ongoing maintenance of all delivered sites

A partnership with Les Animals since 2022

Simago preview
+15 group sites deployed
Simago - Desktop view
Simago - Mobile view

Welp agency work

  • Multilingual corporate website for Institut Mérieux
  • Analytics & compliance: Piwik Pro, GTM, Axeptio
  • Ongoing site maintenance

A partnership with Ekno since 2025

Institut Mérieux preview
+130 years of history
Institut Mérieux - Desktop view
Institut Mérieux - Mobile view

Welp agency work

  • Development of the my.rollon.com platform
  • Development of digital products and user spaces for 15+ countries
  • Development of the intranet for the Rollon group
  • Ongoing maintenance of all delivered sites

A partnership with Les Animals since 2019

Rollon preview
+15 countries targeted
Rollon - Platform view

Who we are

Welp agency was born from a great story. That of Valentin and Vincent, two digital professionals who met, got to know each other and built, over the years, a genuine friendship.

Their skills and roles are complementary. Valentin on the technical side, Vincent on project leadership. What brings them together? A consultative approach and a real sense of relationship.

In 2022 they took the leap into entrepreneurship to give birth to Welp agency — an agency convinced that the best digital projects grow from a solid relationship as much as from technical expertise.

Their ambition is simple but demanding: build an agency committed for the long term with their clients, their teams and their partners.

Let's connect

Our team

Valentin Pellegrin

Valentin Pellegrin

Technical Director & Co-founder

Vincent Lejeune

Vincent Lejeune

Strategy Director & Co-founder

Damien Chantelouve

Damien Chantelouve

Senior full stack developer

Mathieu Girard

Mathieu Girard

Senior full stack developer

Jérôme Dupraz

Jérôme Dupraz

Senior UX-UI designer

Pauline Mary

Pauline Mary

Senior e-marketing consultant

Jean-Baptiste Pestre

Jean-Baptiste Pestre

Senior data developer

Welp AI agent

Project accelerator

10+ years of experience
on average

Our ecosystem of specialised partners

Our methodology for lasting performance

01

Design

We define with you a meaningful project that addresses your key priorities

  • Strategic consulting & objective validation
  • Functional scoping of platforms
  • UX / UI design
  • Prototyping & vibe coding
02

Development

We build modern digital platforms on robust, proven technologies

  • WordPress & custom webapp development
  • Multi-site & multilingual architecture
  • Integration of your business & marketing tools
03

Management

We activate levers to improve your performance and adapt to your evolving challenges

  • Web analytics & continuous improvement
  • Ongoing maintenance & support
  • Webmastering & content integration
Cédric Nattagh Digital Director Cegid
"Welp agency is a highly valuable partner alongside the Cegid digital teams: expertise, availability, and creativity are the pillars of successful projects, always delivered on time. Thank you to the whole team!"

Our technology principles

WordPress

Custom architecture, no page builders or generic themes. Performant, secure and self-sufficient websites, built to last.

Artificial intelligence

AI integrated at every stage — specs, development, testing. Time saved is reinvested into the quality of your deliverables.

Data & analytics

Performance measurement and GDPR compliance built in from day one. Actionable KPIs for continuous improvement of your platform.

Third-party integrations

Your platform connected to your CRM, MAP, ERP or PIM via API. Data flows seamlessly from day one — no manual re-entry.

Valentin Pellegrin Technical Director Welp agency
"AI is present at every stage of our projects — from specs to acceptance testing. It's not a shortcut: it's what allows us to focus on what truly matters, architecture quality and the solidity of our deliverables."

Tell us about your project

Got a digital project? A question about our services? Reach out — we reply within 24 hours.

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Candidates

The agency is growing — reach out to be part of the adventure.

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Partners

Offering complementary expertise? Let's talk about synergies and build something together.