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Freelance developer for SaaS and tech products

Marketing site development for SaaS companies

I design and build the marketing websites of SaaS companies and tech products in Belgium.

5.0
15 years of experience
The problem

Your product wins the demo. Your website doesn't.

In between sits a visitor deciding alone, with nobody there to answer their questions.

Three competitors, three interchangeable homepages.

The all-in-one platform that simplifies everything, a dashboard screenshot, a row of logos. The prospect comparing three tools in one afternoon sees no difference and goes straight to the pricing tables.

Your product is better than what your site shows of it.

Years of development, customers who don't churn, details your competitors don't have. Online: three screenshots and a feature list where everything looks the same.

The visitor reads three pages, doesn't know what to do, and leaves.

No journey, no moment where the next step is offered. Your analytics will show you the visit. It will never show you the trial you just lost.

Every new customer costs more than the last one.

Paid campaigns, outbound, bids climbing every quarter. You rent your pipeline by the month. The day the budget drops, signups stop the next morning.

The solution

Your website is the first screen of your product.

A prospect has already formed a view of your product before creating an account.

With this new website, you turn traffic into qualified trials.

And your pipeline stops depending on this month's ad budget.

Software gets chosen on a problem someone recognises.

It clicks when a visitor sees a situation described better than they could put it themselves. Your site names that problem, for a specific profile, before it talks about you. The people it doesn't concern leave, and that is the point.

The product shows itself actually running.

Use cases played out, before and after, what changes in a working day. The prospect understands your tool without creating an account, and reaches the trial already knowing what they came to do. Activation goes up, and your support answers the same questions less often.

Your pricing page deserves as much care as your product.

A recommended plan, a readable annual toggle, proof placed where doubt appears, objections handled the moment they surface. It's your most visited page: every removed friction shows up directly in signups.

Your pages keep selling once the campaigns stop.

A page per use case, per integration and per alternative, written for what your prospects type into Google and ask AI assistants while they are comparing. A bid stops producing the moment you stop paying for it; those pages are still there the following quarter.

What my clients say

SME owners with the same need as you: a site that matches what they sell.

Sébastien is always attentive and understood our needs perfectly when it came to redesigning our website! The new site looks great and was delivered on time. We've already gained a few customers thanks to the improved SEO of the new site
Didier Boulvin

Didier Boulvin

Coddy

Numinam's contribution to the development of our App has been significant in its success with our B2C and B2B customers.
Stephane Draux

Stephane Draux

Founder • Spengo

Numinam (One More Pixel) is doing a fantastic job for Euronet. They’ve started the mission in saving our web-site from a cyber-attack. We had lost a lot of information and they had to rebuild our web-site. They had to recover the data left on our…
Valérie Van Belle.

Valérie Van Belle.

Managing director • Euronet

At Nallian we build solutions that are trusted by the world's leading airports, ground handlers and logistics companies. But our website no longer reflected that level of excellence. This redesign ensures our first impression matches the quality of…
Jean Verheyen

Jean Verheyen

CEO • Nallian

The new website much better reflects who we are. It tells our story more clearly, it's easy to navigate, it looks fresh and modern. It is more Nallian.
Joke Aerts

Joke Aerts

Director of Marketing • Nallian

Numinam's technical and design vision has enabled us to improve our lead generation flows. A big step forward.
Jérôme Van De Sande

Jérôme Van De Sande

Product & Data Leader • Heat Me

Numinam has completely modernized our website. The design is clearer, more credible, and our visitors understand what we do. A real leap in quality. Also worth noting is the excellent collaboration between Numinam and our development agency. Thank…
Olivier Lafosse

Olivier Lafosse

Founder & CEO • Heat Me

It was a real pleasure to do business with Sebastien. He did a great job and transform our inefficient and boring website to a nice one that generate leads. Moreover, Sebastien is a patient and reliable partner and he's always ready to help.
Shirley Boterdael

Shirley Boterdael

Marketing & Com. Manager • Highcodata

Over 15 years of experience, put to work for your product

You don't talk to a salesperson who reports to a project manager, who briefs a developer and a designer: all those people sit in front of you, in one person, from the very first meeting.

01 UX / UI design

from €595

Before a single line of code, we clarify the path from visitor to trial. The design then does the work of making your product understood in seconds.

What's included

  • Research and scoping
  • Mockups and clickable prototype
  • Conversion-focused copywriting
  • Design system

What you get

  • Approved mockups
  • Navigable prototype
  • Visual guidelines

02 Lightning-fast website build

from €1,190

I build your marketing site from scratch: it loads in under a second and turns visitors into trials and demos. Pages your marketing team can edit, and code that is 100% yours.

What's included

  • Astro development
  • Loads in under a second
  • Google PageSpeed score of 95+
  • Editable pages and landing pages

What you get

  • Site live
  • Code, domain and access (100% ownership)
  • Hands-on training

03 SEO / AEO / GEO

from €595

Your prospects search for a solution on Google and ask ChatGPT to compare three tools. I structure your site so it shows up in both places, and I send you the ranking report so you can watch it move.

What's included

  • Technical SEO
  • Structured data
  • Pages per use case and integration
  • Rank tracking

What you get

  • Indexed, structured site
  • Ranking report
  • Content recommendations

04 Automation

from €595

Signup qualification, follow-up sequences, reporting, sales alerts: I automate what sits between your site and your product, with or without AI. Measurable results within 4 to 6 weeks.

What's included

  • Process audit
  • n8n workflows
  • AI integrations
  • Connecting your CRM and analytics

What you get

  • Workflows in production
  • Documentation
  • Hours won back every week

05 Follow-up and support

I don't hand over a project and vanish. Updates, optimisations, A/B testing and dashboards: I stay your partner for the long run.

What's included

  • Maintenance and updates
  • A/B testing
  • KPI dashboards
  • Ongoing optimisation

What you get

  • Regular reports
  • Measured improvements
  • A single point of contact

How we'll work together

At each step, you know what I do, what you approve and how long it takes.
100%
  1. 01 Scoping call and project setup

    We go over your goals, sort out the paperwork, and I show you the tools we'll be using together.
    5%
  2. 02 Mockups and validation

    I show you a custom mockup for you to pick apart before a single line of code is written.
    15%
  3. 03 Development

    I build your site: fast, and faithful to the design we approved. You get a live preview throughout.
    55%
  4. 04 SEO / AEO / GEO optimisation

    The site is ready, but it needs analysis and serious fine-tuning to prepare its arrival on the web.
    15%
  5. 05 Launch and training

    Go-live, tracking configured, your team trained on the back office.
    5%
  6. 06 Follow-up and optimisation

    3 months of support included, free of charge. Nobody does that.
    5%
Let's look at where your site loses trials.

Let's look at where your site loses trials.

25 minutes to look at your situation together: where your journey loses visitors, what your pages weigh on Google today, what AI assistants say about your product when asked. You leave with a clear diagnosis, even if we never work together.

It's free, there's no commitment, and you get me directly on the phone. The developer you talk to is the one who will build your site.

Book my free 25-minute call

Frequently asked questions

How much does a SaaS marketing site cost at Numinam?

Three formats depending on your stage, always at €595 per working day. Landing page (1 page, conversion funnel, PageSpeed 95+): 2 days, from €1,190. Showcase website (5 to 10 pages with SEO blog, product pages and pricing): 6 days, from €2,975. Website with CMS (10 to 25 pages, SEO/GEO silo architecture, multilingual, CRM integrations): from 12 days, from €7,140. Beyond 25 pages: custom quote. The price covers custom design, technical SEO and delivery in 1 to 10 weeks depending on the format. A monthly content management retainer is available as an option. A 25-minute call is enough to scope your needs and identify the right format.

Why Numinam instead of Webflow or Framer for a SaaS?

Webflow and Framer work well for a first site. The limits show up when you want a structured conversion path, dedicated feature pages that rank on Google, advanced structured markup or a genuinely worked pricing page: performance plateaus on Core Web Vitals, the CMS stays basic, and you depend on the vendor's ecosystem. A custom site hands you back control: PageSpeed 95+, native SEO and GEO, free architecture, and code that belongs to you.

Can my dev team work on the Numinam site?

Yes. The site is built with Astro, a standard open-source framework. Your dev team can work on the code at any time: modify a page, add an integration, deploy a change. The code is hosted in your own Git repository, documented, and follows industry conventions. The goal is for your marketing team to manage content independently (via an admin interface or directly in the files) and for your dev team to step in when needed, without depending on Numinam.

How does Numinam optimise a SaaS pricing page?

The pricing page is often the most visited and the least polished. I apply a few simple principles there: the recommended plan highlighted visually, the annual / monthly toggle with the saving shown, social proof placed near the action buttons, and the FAQ built in so objections get handled where they appear rather than after the visitor has left.

What concrete impact on conversion rate?

I cannot promise you a number: the conversion rate depends on your product, your price and the quality of the traffic arriving. Be wary of anyone who quotes you a multiplier before seeing your pages.

What I can tell you is where visitors get lost on the SaaS sites I audit: a homepage that qualifies nobody, feature pages that describe the tool without answering objections, and a pricing page that leaves people to choose alone. During the 25-minute audit, we look at your current rate and the pages where it drops. The target gets set from there, not from a market average.

Does SEO on feature pages actually work for a SaaS?

Yes, and it is often the least worked part. When a prospect searches "collaborative project management tool" or "automatic invoicing software", they are in active comparison: purchase intent is strong. A dedicated feature page, structured around that search, captures that traffic.

Those are also the pages ChatGPT, Perplexity and Google AI Overviews cite when a user asks for a recommendation.

Who writes the page content?

Three options depending on your situation. I can write the content from A to Z (included in the budget or as a supplement depending on volume). I can optimise the content you provide (restructuring, SEO, conversion copywriting). Or I can work directly with your marketing team or copywriter to produce together. We define the model during the scoping call based on your internal resources.

What happens if Numinam is no longer available?

The complete source code lives in your own Git repository from day one, on very widespread technologies (Astro, Node.js), with the technical documentation delivered at launch. Your dev team, or any other developer, can take over.

What I cannot promise is being available forever; what I can guarantee is that my leaving does not block you.

Can we migrate from Webflow to a Numinam site?

Yes. Existing content (text, images, structure) is carried over and integrated into the new architecture. If your Webflow site has SEO traffic, 301 redirects are set up on every URL to preserve your Google rankings. The Webflow site stays online throughout the development phase. The switch happens once everything is tested and validated.

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