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Freelance developer for consulting and B2B services

Web development for consulting firms

I design and build websites for consulting firms, agencies and B2B service companies in Belgium.

5.0
15 years of experience
The problem

Your firm runs on referrals. A referral cannot be in two places at once.

It travels at the speed of your contact book, and stops there.

Your website says exactly what the Big Four say.

Transformation, performance, tailored support. The committee shortlisting three firms before a consultation reads the same page three times. With equal promises, they compare what they can compare: the day rate.

Your best assignments are told nowhere.

Confidentiality keeps your results locked inside slide decks and internal debriefs. What you unblocked for one client never helps you win the next one, because nobody can read it.

The decision-maker read you, judged you, and left no trace.

They were looking for a firm on a specific issue, went through your homepage, found no sign of an assignment like theirs. They left without a word, and you won't find out who won the mandate instead of you.

You build your authority on someone else's ground.

Your partners publish, organic reach drops every quarter and a post lives forty-eight hours. You feed an audience you don't own, on a platform that decides on its own who gets to read you.

The solution

Your website becomes your best referral.

The one that keeps working while your partners are out on assignment.

With this new website, you get mandates, not impressions.

And your pipeline stops depending on your partners' contact books.

A firm gets chosen on its way of thinking.

Your reading of the market, your method, the convictions that make you turn assignments down. That point of view is what separates two firms, not the list of areas you cover. Spelled out, it makes you impossible to mistake for a competitor.

Confidentiality doesn't rule out proof.

Context, approach, measured results: an assignment can be told without ever naming the client. Your cases become readable by a decision-maker who has never met you, and your frameworks travel beyond the meeting room. They arrive at the first call already knowing how you work.

Enquiries that arrive with their context.

Stakes, scope, deadline, budget in mind: the forms ask what you would ask on the first call. Every enquiry lands in your CRM complete and sourced. Your partners qualify mandates instead of sorting through noise.

A post lives two days. A page works for years.

A page for each area of expertise and each problem you solve, written in the words your future clients use on Google and with AI assistants. It is still being read eighteen months from now by a decision-maker you would never have reached, while Tuesday's post is long gone from the feed.

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 firm

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 your visitors' journey and the image you project. The design then does the work of establishing your authority and guiding people towards getting in touch.

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 site from scratch: it loads in under a second and turns visitors into assignment enquiries. No template, no plugins to maintain, and code that is 100% yours.

What's included

  • Astro development
  • Loads in under a second
  • Google PageSpeed score of 95+
  • Editable blog and client cases

What you get

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

03 SEO / AEO / GEO

from €595

Your future clients search on Google and ask ChatGPT. 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
  • Topic-silo architecture
  • Rank tracking

What you get

  • Indexed, structured site
  • Ranking report
  • Content recommendations

04 Automation

from €595

Nurturing, follow-ups, reporting, formatting deliverables: I automate the tasks that eat your consultants' time, with or without AI. Measurable results within 4 to 6 weeks.

What's included

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

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 what your content brings in.

Let's look at what your content brings in.

25 minutes to look at your situation together: your Google rankings on your areas of expertise, what your content brings in today, what your website says about your firm. 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

What's the budget for a consulting firm website?

I charge €595 per working day. A complete showcase website (up to 10 pages, SEO blog included) starts from 6 days, so from €2,975. A website with CMS, with content strategy, thematic silo architecture and CRM integrations, starts at 12 days, so €8,925. The price depends on scope: number of pages, content strategy, integrations, volume of target keywords. A 25-minute call scopes the project and fixes the price before the first line of code.

How do you build a content and thought leadership strategy for a consulting firm?

A consulting firm creates value through its expertise, but that expertise remains invisible if it isn't published and structured to be found. I build content architectures in thematic silos: each practice area (strategy, digital transformation, finance, HR…) has its own content pillar with supporting articles. This structure lets the firm rank on expertise keywords and get cited by AI tools like ChatGPT or Perplexity. Content is designed to demonstrate the firm's competence, not to fill a blog without strategy. I work with you to define priority topics, appropriate formats (in-depth articles, case studies, sector analyses) and the editorial calendar.

SEO or LinkedIn: which channel should a B2B consulting firm prioritise for lead generation?

Both are complementary, but they serve different stages of the client journey. LinkedIn is effective for brand awareness and direct relationships, but organic reach is declining and content has a very short shelf life. SEO, on the other hand, builds a durable asset: a well-ranked article keeps generating qualified visitors months after publication. In 2026, Google AI Overviews and generative AI tools (ChatGPT, Perplexity) cite authoritative sources. Your website is the only place where you fully control that content. I build sites combining technical SEO and GEO so your firm is found on Google and cited by AI, whatever your prospects are searching for.

Can a blog and editorial strategy be integrated directly into my consulting firm's website?

Yes: it's at the core of the offering. The sites I build for consulting firms natively include a blog with an optimised SEO architecture: structured URLs, semantic markup, internal linking between articles and service pages. You have two options for content management: I handle it through a monthly editorial retainer (from €150/month), or you manage it yourself with a bespoke CMS if your team wants full publishing autonomy. In both cases, each article is designed to answer a specific search intent and to demonstrate your firm's expertise on questions your clients are actually asking.

Can I connect my website to my CRM for lead nurturing?

Yes. The sites I build for consulting firms can be integrated with the main CRMs on the market: HubSpot, Salesforce, Pipedrive, Zoho, or an internal CRM. Contact forms, content download requests (white papers, studies) and newsletter sign-ups feed directly into your prospecting pipelines. I also configure analytics events (Google Analytics 4, Matomo) to track conversion paths and identify which pages generate the most qualified leads. If your nurturing process includes AI-powered automations, these are integrated from the design phase.

What happens if Sébastien is no longer available: who maintains my site?

The full source code of your site lives in your own Git repository from day one, on very widespread technologies (Astro, TypeScript) with documented conventions. Another developer can take over with no transition period. I also work with developers I trust who have secure access to projects and can step in.

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

My firm is small (3-5 consultants). Is this suited to my budget?

Yes. A complete showcase website with SEO blog and CRM integration starts at €2,975, which is the price of one or two consulting days billed to your own clients. For a small firm, we focus on the essentials: two or three key themes, service pages that convert, a well-connected CRM. You do not need fifty pages to start ranking.

A small firm even has an advantage: you can publish fast, test angles and decide without a committee. The site then grows with you, silo by silo.

How long before SEO results for my consulting firm?

Generally, the first rankings arrive between 3 and 6 months after launch, on the least competitive keywords in your niche. That is the time Google takes to index your content, evaluate its relevance and start positioning it.

What accelerates things: a content architecture structured from the start, a regular publishing cadence (even one article a month changes the trajectory) and a domain with some history. The effect is cumulative, each piece reinforcing the ones before it. It is an investment that compounds, where an ad spend stops the day you cut the budget.

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