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if/else agency – web development on HubSpot
From high-performance websites to advanced technical consulting
In 2026, having a high-performance website and a robust digital ecosystem is no longer optional, it’s a business imperative.
That’s why if/else agency supports its clients in building innovative web solutions on HubSpot, from fully custom templates and bespoke websites to the implementation of advanced technical architectures designed to streamline data synchronization and significantly improve data accuracy.
Our team of full-stack developers works hand in hand with our marketing experts to connect your business tools within a single, unified platform, bringing your teams together around reliable, actionable data that will fuel your next business successes.
Our mission: deliver high-performance digital solutions without ever forcing you to choose between your ambitions and your budget.
Custom HubSpot themes, drag & drop templates, and advanced SEO-ready, responsive modules with options. A complete library of reusable sections to build, optimize, and scale your HubSpot website without us!
From €600 / day (excl.VAT)
High-performance HubSpot websites & front-end development
Looking to migrate your website to HubSpot CMS or enhance an existing HubSpot website?
With over 10 years of experience on the HubSpot platform, our team of certified developers supports you throughout the creation, redesign, and optimization of high-performing HubSpot responsive websites.
if/else agency designs modern, scalable, and fully custom websites based on your designs or an existing site. Built on a proprietary code foundation aligned with the latest web best practices, our approach combines agility, aesthetics, and performance.
Without requiring a full redesign, our team also develops custom HubSpot templates, reusable sections, and bespoke modules to improve your website’s flexibility, speed, and scalability.
We also handle technical bug fixes, performance optimization, and the development of advanced functionalities tailored to your teams’ operational needs.
The result: a powerful, scalable, and SEO-friendly HubSpot website, ready to support your digital growth.
From €800 / day (excl.VAT)
Custom technical HubSpot solutions, API & back-end development
Are you facing data synchronization issues, application silos, or information that doesn’t flow properly between your tools?
Some HubSpot integrations aren’t available natively or require highly specific adjustments. Our HubSpot-specialized full-stack developers design custom APIs to properly connect your business applications.
These tailor-made APIs ensure reliable data synchronization, automated workflows, and seamless data exchanges between HubSpot and your third-party tools (CRM, ERP, internal software).
The goal is simple: clean, accurate data, in the right place and at the right time to optimize your internal processes and overall performance.
The result: a smooth, reliable, and fully connected digital architecture, without unnecessary complexity.
From €600 / day (excl.VAT)
HubSpot advanced technical consulting for development teams
Some companies already have in-house development teams but require expert HubSpot guidance to design and deploy complex, custom architectures within an unfamiliar ecosystem.
In these cases, our teams step in as HubSpot technical consultants, supporting your developers by training, guiding and securing key technical decisions throughout the project.
This consulting typically includes a thorough review of your business processes, an audit of your existing technology stack, identification of the data to be migrated or synchronized between HubSpot and your existing systems (CRM, ERP, internal tools), as well as the definition of key workflows, milestones, and associated triggers.
The goal is to define a clear, clean and scalable architecture, along with a relevant action plan that enables your developers to independently implement the integrations, automations, and custom developments you need.
The result: empowered technical teams, controlled processes, and a HubSpot ecosystem perfectly aligned with your business objectives.
Expertise, transparency, and education: the if/else agency approach for your web projects
A methodology built on 10 years of HubSpot experience
Our web project methodology is directly shaped by our hands-on experience and strong product culture, combining technical rigor, user-centric design, and business-driven objectives. Each website is designed as a true growth engine: fast, responsive, accessible, conversion-optimized, and built to provide full autonomy to marketing teams.
At if/else agency, we apply web best practices and closely follow HubSpot CMS guidelines and product evolutions to deliver sustainable, maintainable websites that integrate seamlessly with your CRM and marketing automation ecosystem.
Excellence
without compromise
We're committed to delivering quality work without breaking the bank, while cultivating an atmosphere that's a pleasure to work in.
Efficient, transparent project management
We start by listening to your needs to establish a clear estimate. Then? We co-construct a concrete roadmap with you: precise milestones, deadlines to be met, and regular updates. You know where we stand, all the time.
A customer experience without (un)pleasant surprises
We've optimized our processes to be competitive, without ever cutting back on quality. With us, there are no delays or headaches. Just a well-executed project and a site that meets your expectations.
Your web solutions
ready to use
Addiction? Not for us. Our aim is to make you 100% autonomous. With if/else agency, you leave with high-performance web solutions, drag-and-drop manageable pages and a library of customizable modules and templates.
Customer testimonials: the key to our success
We worked for with them
At if/else agency, we don't (just) focus on numbers or project volumes. What matters to us is that our customers are satisfied. Every positive review is what keeps us going. How about working together on your next project?
HelloWork
Website redesign
HelloWork entrusted us with the redesign of their recruiter site, with the aim of creating a modern design and making content management totally autonomous. In less than a month, we developed a custom template via HubSpot, enabling their team to build and adapt their pages easily, without the intervention of developers.
Hellio
Development of a dynamic RGE directory
Hellio, a player in the energy transition, wanted to promote RGE-certified craftsmen and facilitate their connection with customers. If/else agency developed a dynamic directory connected via API to the ADEME database and integrated with HubSpot, enabling multi-criteria searches (type of service, postal code, field). The result: an automated, reliable, and easy-to-use tool that has enhanced the user experience and customer satisfaction.
ThisIsBlindTest
Website redesign
Amusoire, specializing in recreational activities, asked us to completely redesign their TIBT showcase site, to improve visibility and optimize day-to-day management by their teams. Thanks to development on HubSpot, we created a high-performance site, fully customizable via drag-and-drop interfaces, allowing total autonomy for updates and evolutions.
