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// web development
Websites and integrations your teams can keep evolving.
On HubSpot CMS and beyond: websites, API integrations and technical consulting. Our developers build high-performance websites and connect HubSpot to your other tools.
Your data stays synchronized and reliable. Your teams edit their pages without calling us.
Our full-stack developers work hand in hand with our marketing experts so that your business tools communicate easily and produce solid data at the heart of your next business successes. All without ever forcing you to choose between your ambitions and your budget.

// at a glance
- from
- €600 / day excl. VAT
- services
- HubSpot websites, API & back-end integrations, technical consulting
HubSpot websites & front-end development
Want to migrate your website to HubSpot CMS or improve an existing HubSpot website? Our founders have worked on HubSpot for more than 10 years, and our team of certified developers supports you in creating, redesigning and optimizing responsive websites on HubSpot.
if/else agency builds modern, high-performance, custom websites from your mockups or an existing site. Based on a proprietary code foundation that follows the latest web best practices, our method combines agility, aesthetics and performance.
Without a full redesign, our team also develops HubSpot templates, custom modules and reusable sections to improve your website’s flexibility, speed and scalability. Our team also fixes technical bugs, optimizes performance and develops the complex features your teams need.
The result: a high-performance, scalable, SEO-friendly HubSpot website, ready to support your digital growth.
- Custom theme
- Drag & drop templates
- SEO & responsive modules
from €600 / day excl. VAT
Custom HubSpot integrations & API/back-end development
Struggling with data synchronization issues, application silos, or information that doesn’t flow properly between your tools?
Some HubSpot integrations are not available natively or need precise adjustments. Our full-stack developers specialized in HubSpot build custom APIs to connect your business applications properly. These custom APIs keep your data synchronized, automate your flows and make the exchanges between HubSpot and your third-party tools (CRM, ERP, internal software) reliable.
The goal is clean data, in the right place, synchronized at the right time, to optimize your internal processes and your performance.
The result: a smooth, reliable and fully connected digital architecture, without unnecessary complexity.
- Custom APIs
- Data synchronization
- CRM, ERP, internal tools
from €800 / day excl. VAT
Advanced HubSpot technical consulting for your developers
Some companies already have an in-house development team but need technical support on HubSpot to design and deploy complex, custom architectures in an environment they don’t master (yet). Our teams then act as HubSpot consultants to train, guide and secure your teams’ technical choices.
This consulting usually includes mapping your business processes, auditing your existing tool stack, identifying the data to migrate or synchronize between HubSpot and your existing systems (CRM, ERP, internal tools), and defining the key moments and their triggers.
The goal is to define a clear, clean and scalable architecture along with a relevant action plan, so your developers can build the integrations, automations and custom developments you need on their own.
The result: trained technical teams, controlled processes and a HubSpot ecosystem fully aligned with your business challenges.
- Stack audit
- Architecture
- Action plan
from €600 / day excl. VAT
// 02 · hubspot and beyond
HubSpot and beyond.
if/else agency is lucky to have two full-stack developers on its team and also offers web development (front and back) outside HubSpot: Webflow, Storyblok, Strapi, Prismic, development from scratch, web apps…
Our developers adapt to your tools, not the other way around.
// 03 · testimonials
Our clients vouch for our HubSpot expertise.
More than 100 companies have already entrusted us with their web and marketing projects. See our case studies
- Brand identity and web design
- CRM implementation, integrations & architecture
- HubSpot CMS development (website, landing pages, blog)
- Software synchronization and API connections
- Marketing automation, acquisition and sales performance
- Tracking and data
“HubSpot CMS pros. Very good collaboration with the if/else teams on the HubSpot CMS. We had to integrate the booking engine of a third-party business tool. Deadlines met and quality delivered. Great work.”
Thierry Calderón
“If Else agency supported us in setting up our HubSpot CMS and the results were more than excellent. They helped us meet our client deadlines with a high-performing CMS perfectly suited to our expectations. I highly recommend their services.”
Arthur Rivas
“You can work with Luc and his team with your eyes closed. It’s a competent, reliable agency that comes up with ideas and meets its deadlines. For a HubSpot development project, don’t hesitate.”
Maxime Digue
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