Gilles Crofils

Gilles Crofils

Hands-On Chief Technology Officer

Tech leader who transforms ambitious ideas into sustainable businesses. Successfully led digital transformations for global companies while building ventures that prioritize human connection over pure tech.1974 Birth.
1984 Delved into coding.
1999 Failed my First Startup in Science Popularization.
2010 Co-founded an IT Services Company in Paris/Beijing.
2017 Led a Transformation Plan for SwitchUp in Berlin.
November 2025 Launched Nook.coach. Where conversations shape healthier habits

move ideas forward without chasing perfection

Abstract:

The article advocates for minimalist validation as a practical alternative to perfectionism in launching tech products or services. It argues that obsessing over details like logos or fully built websites often leads to wasted time, money, and motivation, while delaying meaningful feedback. Drawing on examples such as Buffer, Gumroad, and Dropbox—whose founders tested demand with simple landing pages or explainer videos before investing heavily—the article outlines tactics like micro-pilots, pre-selling, and direct outreach to quickly gauge real interest. It emphasizes rapid, focused experiments—sometimes within a single week—using no-code tools, targeted scripts, and checklists to collect actionable data and interpret signals from potential customers. The approach is accessible to both startups and solo professionals, promoting a mindset of learning from imperfection and adjusting based on actual responses, rather than speculation. By deliberately avoiding overbuilding and endless tweaking, minimalist validation fosters calm confidence, saves resources, and frees up time for both professional progress and personal pursuits, illustrated by examples of founders having more space for hobbies like gardening or carpentry. Ultimately, the article presents minimalist validation not just as a faster method, but as a sustainable work style that prioritizes real results and a balanced, enjoyable life.

Ever spent weeks sketching a logo or tweaking a website, only to wonder if it really matters? I’ve been there—when I first launched my science popularization company, I obsessed over every pixel on our homepage. I thought a perfect launch would guarantee success. But after all that effort, most visitors cared more about our offer than our logo. In tech, it’s easy to get stuck in the details, hoping perfection will mean success. But polishing endlessly eats up time and energy that could be spent on what actually counts. Sometimes, good opportunities slip away while you’re still perfecting.

This article offers a different path: minimalist validation. It’s about testing ideas quickly and simply, putting in just enough effort to see if there’s real interest. I’ll show you how waiting for perfection—or building too much up front—can quietly drain your motivation, money, and even your sanity. Instead, quick, low-risk experiments—like micro-pilots, landing pages, or just sending a few messages—can reveal real demand before you invest much.

You’ll get:

  • A simple framework for defining your niche and value proposition
  • The hidden costs of over-building and perfectionism (with a story or two from my own failures)
  • Tactics founders (and I) use to test ideas in days instead of months
  • How to set up fast, focused validation sprints (sometimes in just one week)
  • Simple tools and scripts for getting feedback easily
  • Smart ways to interpret results and decide what to do next

Whether you’re scouting a new niche, launching a service, or just want to avoid endless tweaking, these strategies help you move forward with more confidence and less stress. Here’s how minimalist validation can bring more clarity, calm, and even time for things you enjoy—without getting stuck chasing perfection.

define your niche and value proposition

Before you test anything, you need to know what you’re actually offering—and to whom. I learned this the hard way when I co-founded an IT services company in Beijing. We tried to be everything to everyone, and our pitch was so vague that even I wasn’t sure what made us different. Only when we sat down and mapped out our unique skills, values, and the specific problems we solved did things start to click.

Here’s a quick exercise I use now, both for myself and with clients:

  1. List your expertise: What do you know deeply? (For me: data-driven marketing, science communication, cross-border e-commerce.)
  2. Identify your values: What matters to you? (Transparency, practical results, work-life balance.)
  3. Spot your differentiators: What sets you apart? (Maybe it’s your background in fundamental physics, or your experience launching products in new markets.)
  4. Define your audience: Who do you want to help? (Solo founders, small tech teams, science educators, etc.)
  5. Articulate the problem: What pain or need do they have?
  6. Craft your pitch: In one sentence, describe how you solve that problem, using your unique skills.

For example, my pitch for a recent consulting offer: “I help solo tech founders validate new service ideas in one week, using data-driven experiments and no-code tools—so they can avoid burnout and focus on what matters.”

Don’t worry if your first draft feels clunky. The point is to get specific. Once you have this, you’re ready to test if anyone actually cares.

why validation matters

hidden costs of chasing perfection

Tech professionals (myself included) often spend weeks or months perfecting a niche, designing websites, or fine-tuning every detail before getting real-world feedback. This drive for perfection doesn’t just slow things down; it quietly drains time, money, and motivation. When I first launched my science company, I spent weeks perfecting our website before talking to a single customer—only to realize most visitors cared more about our offer than our logo.

Perfectionism and procrastination are often linked. I’ve waited for the magical “perfect moment” to launch, believing one more fix would make all the difference. But this habit just increases stress and slows progress, while rarely improving the final result. I remember staring at an outreach email for hours, tweaking every word, while good chances passed by and my motivation dropped. Overbuilding can quietly hit your budget, too.

Overbuilding—adding features nobody asked for or spending weeks on a logo—raises costs and the risk that you’re building something no one really wants. Many founders (and I’ve learned this the hard way) prove that small, quick tests work better. Some classic pitfalls:

  • Launching a full website without checking if the main offer is interesting
  • Spending weeks on branding instead of conversations with clients
  • Building complicated tools or dashboards before confirming user interest

When I helped launch a cross-border e-commerce platform, we used simple landing pages and tracked conversion rates to validate new product ideas. If a page didn’t hit at least a 10% signup rate, we moved on. This data-driven approach saved us months of wasted effort.

Founders behind Buffer and Gumroad started out with simple landing pages or prototypes, getting feedback early before investing heavily. Building too much up front increases risk and expense, while simple, quick tests are proven to work. So, what do these minimalist tests look like?

rapid, minimalist testing shows real potential

Many successful products started with fast feedback. Founders like Joel Gascoigne of Buffer and Sahil Lavingia of Gumroad used simple landing pages or mockups first. They tested interest and collected feedback before writing code or adding big features. It saved time and made it clear if people really wanted their solution, before spending a lot of money or effort.

Dropbox took it a step further. They showed their idea with a short explainer video, not by building a product first. The video demonstrated what the service would do and collected tens of thousands of signups quickly. This low-risk test saved many months and gave a clear answer about demand. I’ve used a similar trick: when launching a mini digital product, I shared a rough PDF and a Stripe payment link. If nobody bought, I knew to move on—no harm done.

Independent tech workers can use these methods, too. A simple landing page, a LinkedIn post, or some direct messages to potential clients can be enough to check a consulting idea or new service. Minimalist validation fits both for growing startups and solo professionals. Let’s get into its main principles.

core principles

focus on what matters

Testing a new niche can make you want to perfect every small thing—messaging, pricing, branding, even logo color. But the 80/20 rule makes things clear: focus on the few parts that determine success, like real demand and if people are willing to pay. Think of it like packing for a weekend trip. Bring only what you need. The top things to check early are: the problem you solve, whether people like your solution, and if someone will pay for it. Everything else—websites, branding—can wait until there’s real interest.

Before you start building, try this checklist:

  • What’s my unique expertise or story?
  • Who am I helping, and what’s their biggest pain?
  • What’s my offer, in one sentence?
  • What’s the simplest way to test if people care?

minimalist checklist for early validation

Speed and simplicity win at this stage. For effective validation, just focus on:

  1. Is there interest in your idea?
  2. Are people willing to pay, or at least seriously consider it?
  3. Can you reach your target group and get quick feedback?

Everything else, like decks or flashy logos, can wait until these are answered.

why fast, simple tests win

Minimalist validation means moving quickly, cutting costs, and learning fast. This is especially useful for solo workers or small teams, where resources are tight. Fast, cheap experiments let you adjust course before you make big commitments. But how fast? Here’s where the one-week test comes in handy.

the one-week test

timeboxing for focus

Validation can get dragged out for weeks or months if you try perfecting everything. Better to set a timebox—one week is usually enough to run a test, get feedback, and decide your next step. A short, focused sprint keeps you moving and stops you from spinning your wheels. A clear deadline helps you see what matters most, not just what feels comfortable.

short deadlines beat endless tweaking

With a short deadline, you skip the urge to keep tweaking or adding extras and instead focus on getting real feedback. Just a few days can show if there’s basic demand. If the test flops, it costs you little more than a week, and you can try something different without worry.

lowering the stress

Going quick makes failing feel lighter. When a test lasts only a few days, it’s easy to try again if things don’t work out. If it works, great. If not, you move on with no big loss. I remember launching a mini-course that flopped—just three signups. But because it only took a week, I shrugged, learned, and tried something else. Now for some real tactics you can use right away.

minimalist tactics you can use now

micro-pilots and paid experiments

One quick way to check a niche is by offering a micro-pilot—a basic version of your service or product to a small group. This could be a one-hour consult, a quick audit, or a mini-course. Micro-pilots are designed to be simple and low risk, so you can launch them in days not weeks. Common types:

  • “Quick win” consulting sessions
  • Basic website or product audits
  • Short, focused online workshops
  • Mini digital products or guides

The goal isn’t big earnings yet, but a clear answer: do people want what you offer? Showing a micro-pilot to real prospects helps you see if people are engaged or willing to pay.

You don’t need many sales at this stage—just a handful of paying clients or solid signups are enough. For instance, if three out of ten prospects go for a mini-audit, that’s a great sign. Even a few “yes” replies signal you’re onto something, while being met with silence shows it’s time to adjust.

I once ran a “data-driven marketing audit” for €99, offering it to my LinkedIn network. Out of 12 people I messaged, two signed up. Not a gold rush, but enough to prove there was some demand—and the feedback helped me refine my offer.

This approach works for almost any field: SaaS, consulting, or digital products. It also lets you improve your offer with real feedback, not guesses. As you get reactions, you can tweak and improve. Next, another strong tactic is to test with mockups and pre-sales before building the real thing.

mockups and pre-selling

A landing page with your offer and a signup form can be built in an afternoon using tools like Carrd or Unbounce. This quickly shows if your idea draws interest. Steps are simple:

  1. Write a clear offer and its benefits
  2. Add a signup or pre-order form
  3. Share with your target audience

Pre-selling goes further by seeing if people will pay before the service or product exists. This really tests who’s willing to buy, not just watch. If you get a few pre-orders, it means you’re solving a real problem.

Getting fast feedback can also mean sharing your mockup on public platforms—LinkedIn, emails, or a relevant Slack group. Track who clicks, signs up, or asks a question. These are real signals. Typical channels:

  • LinkedIn posts or polls
  • Email newsletters
  • Slack or Discord groups

Actual conversations matter, too. Here’s where the “ask 10” challenge helps.

the 'ask 10' challenge and public signals

Talking or reaching out to just ten potential clients brings loads of insight. Ask about their problems, share your idea, and see what gets a spark—or doesn’t. Simple questions like, “What’s hardest about managing X?” can get honest answers.

You can watch public signals like poll results, upvotes, or strong comments to check if people care about your idea. Sometimes just a few excited replies or shares mean your idea deserves more attention. Good places:

  • LinkedIn posts and polls
  • Twitter threads and replies
  • Niche forums and communities

Keep questions about real actions, not just opinions. The best info comes from asking what people have paid for, what they’ve tried, and whether your offer sounds useful enough for them to take action. A checklist for conversations:

  • Ask about actual past behavior (“Have you ever paid for X?”)
  • Show your offer and ask for gut reactions (“Would this be useful for you?”)
  • Listen for signs of real excitement or doubt

Once you collect early signs, it’s time to read them and decide what to do next.

making sense of your results

spotting strong, weak, and mixed signals

Not every experiment gives a clear answer. When you look back at your feedback and the numbers, some useful benchmarks signal a strong idea. Usually, strong validation looks like:

  • Ten to twenty percent or higher conversion rates on your landing page
  • Several pre-sales or early paying customers
  • Clear, excited feedback in interviews or surveys

If you see these, your idea has legs. That’s when it makes sense to start building more or investing more.

But sometimes, you get weak or unclear signals—low conversion rates, only a few half-hearted replies, or no real excitement. In these cases, it’s smart to adjust your message, change pricing, or target a different audience. Even a small tweak, like a clearer headline, can change results.

Sometimes, you get mostly negative or “meh” feedback from your main audience. When that happens, better to change course early—you lost just a week, not months, on an idea that didn’t fit.

adjust, pivot, or go bigger

When feedback is mixed, look for patterns. Sometimes, only a certain group likes your idea—solo founders, for example, instead of agencies. By mapping out who’s interested, you can narrow your focus and tweak your offer. This method is common in early case studies, like Dropbox or Zappos, where first feedback guides the next step.

Small changes can turn a lukewarm test into a win. Try:

  • Changing the main benefit or headline
  • Switching up pricing or payment terms
  • Adjusting for a different audience segment

If your signals are strong, move ahead. If they stay weak, it’s okay to pivot or take a pause. Minimalist validation lets you do this with no big loss or regret. The point is to keep moving, using real feedback instead of guesses.

To make this easier, there are ready-made tools and templates for every step.

tools and templates for fast validation

checklists and frameworks

Frameworks help you stay on track and avoid bias during a sprint. A simple checklist keeps things clear:

  1. Define your core idea—what problem, and who it’s for
  2. Pick a main test (landing page, micro-pilot, or interviews)
  3. Set up tracking for results (signups, replies, payments)
  4. Decide clear success markers before you start

A checklist like this, inspired by Lean Validation Playbook or Google Ventures templates, keeps your process simple.

Tools like the Value Proposition Canvas or The Mom Test interview guide make it easier to match your idea to real needs. They help you avoid biased questions. The Lean Canvas gives a broad overview, while the Value Proposition Canvas zooms in on customer pains and gains.

A daily plan can also help keep things moving. Example: day one, outreach; day two, build page; day three, schedule calls; day four, collect results; day five, review. Momentum is easier with a plan. Next, ready-made outreach scripts can save time too.

scripts and outreach templates

Short and direct works best for outreach:

“Hi [Name], I’m working on something new to help [target] with [problem]. Could we chat quickly?”

Brief, clear messages tend to get more replies and keep things simple.

For interviews, keep questions neutral. “Can you tell me about the last time you faced [problem]?” or “What did you try? How did it go?” avoid steering the answers. Prompts to try:

  • “What’s the hardest part about [topic] for you?”
  • “How have you tried to fix it?”
  • “What did you like or not like about other options?”

After a sprint, a quick feedback email helps. A message like, “Thanks for your thoughts! Here’s what I learned and the next steps,” shows you value their time and keeps you connected. That friendly follow-up can help open new doors. Now, a look at the best tools for minimalist testing.

top tools for minimalist testing

No-code tools let you test ideas fast, with no technical headaches. Popular, easy solutions for each step:

  • Landing pages: Carrd, Unbounce, or Webflow for quick sites
  • Pre-sales and payments: Gumroad, Lemon Squeezy, or Stripe Payment Links for quick payments
  • Feedback and surveys: Tally, Typeform, or Google Forms for easy surveys

These tools are trusted for speed and simplicity. They help you focus on getting market signals instead of getting stuck setting things up.

When you use tools recommended by trusted business communities, you save time and focus on what matters: getting real answers. Next, let’s look at the hidden benefits of minimalist validation.

calm confidence and hidden benefits

learning from imperfection

Minimalist validation changes how you see failure. Each test becomes just a way to learn—more like mastering bike riding than a big test. I’ll be honest: when I left my CTO role to go independent, I felt a knot in my stomach every time I launched something new. The fear of failing in public was real. But quick, low-risk tests made it easier to try, fail, and try again—without the drama.

This mindset lowers anxiety and makes trying new things feel less scary. It’s not about passing or failing but finding what works, step by step. Quick testing cycles also build true confidence. When you get actual results—a few real signups or honest feedback—you know your work fits the market based on facts. Over time, this approach makes you more flexible. You start to trust the process and adjust your path based on feedback, not just guesses.

This habit of quick checks makes you more resilient and focused on the market. You spend less time worrying about perfection and more time building things that are a real fit. This is the practical way to keep moving forward, especially if things ahead aren’t 100 percent clear. It also frees up time and energy for what matters.

minimalist validation frees up your resources

By skipping overbuilding and waiting for perfection, you avoid wasting money and energy. Each hour and euro goes into what matters—real feedback, real clients, real learning. You spend less on showy websites or endless planning and more on steps that bring results.

It’s also kind to your creativity and personal interests. When you’re not overwhelmed by unnecessary work, you can enjoy side projects, hobbies, or even a stroll outside. I’ve found that quick validation sprints mean I have more time for gardening, carpentry, or just a walk with my dog. Minimalist validation isn’t just about speed. It’s a sustainable way to work and supports a calmer, happier work life.

Having time for things like gardening or carpentry comes from freeing up mental space through quick experiments—so both work and life stay in good balance. Quick, low-risk tests make it possible to focus on what matters, without getting stuck in endless loops of tweaking. Minimalist validation means building something real, with enough space to enjoy the journey.

Minimalist validation isn’t just a shortcut—it’s a real way to move ideas forward with less stress and more clarity. Instead of spending weeks overthinking or chasing perfection, focus on the steps that matter most: defining your niche, testing, learning, and adjusting. Quick experiments, simple landing pages, and straight outreach reveal real interest without draining your energy or money. This approach also brings real confidence, making it easier to adapt and actually enjoy the path, whether you’re starting a new service or checking out a new niche. By keeping things light and focused, you make more room for what matters—work, life, and maybe even a bit of fun too.

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25 Years in IT: A Journey of Expertise

2025-

Nook
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Product Lead
Building the future of health coaching. Leading product development and go-to-market strategy for a platform that makes personal wellness accessible through natural dialogue.
Making health coaching feel like talking to a friend who actually gets you.

2024-

My Own Adventures
(Lisbon/Remote)

AI Enthusiast & Explorer
As Head of My Own Adventures, I’ve delved into AI, not just as a hobby but as a full-blown quest. I’ve led ambitious personal projects, challenged the frontiers of my own curiosity, and explored the vast realms of machine learning. No deadlines or stress—just the occasional existential crisis about AI taking over the world.

2017 - 2023

SwitchUp
(Berlin/Remote)

Hands-On Chief Technology Officer
For this rapidly growing startup, established in 2014 and focused on developing a smart assistant for managing energy subscription plans, I led a transformative initiative to shift from a monolithic Rails application to a scalable, high-load architecture based on microservices.
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2010 - 2017

Second Bureau
(Beijing/Paris)

CTO / Managing Director Asia
I played a pivotal role as a CTO and Managing director of this IT Services company, where we specialized in assisting local, state-owned, and international companies in crafting and implementing their digital marketing strategies. I hired and managed a team of 17 engineers.
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SwitchUp Logo

SwitchUp
SwitchUp is dedicated to creating a smart assistant designed to oversee customer energy contracts, consistently searching the market for better offers.

In 2017, I joined the company to lead a transformation plan towards a scalable solution. Since then, the company has grown to manage 200,000 regular customers, with the capacity to optimize up to 30,000 plans each month.Role:
In my role as Hands-On CTO, I:
- Architected a future-proof microservices-based solution.
- Developed and championed a multi-year roadmap for tech development.
- Built and managed a high-performing engineering team.
- Contributed directly to maintaining and evolving the legacy system for optimal performance.
Challenges:
Balancing short-term needs with long-term vision was crucial for this rapidly scaling business. Resource constraints demanded strategic prioritization. Addressing urgent requirements like launching new collaborations quickly could compromise long-term architectural stability and scalability, potentially hindering future integration and codebase sustainability.
Technologies:
Proficient in Ruby (versions 2 and 3), Ruby on Rails (versions 4 to 7), AWS, Heroku, Redis, Tailwind CSS, JWT, and implementing microservices architectures.

Arik Meyer's Endorsement of Gilles Crofils
Second Bureau Logo

Second Bureau
Second Bureau was a French company that I founded with a partner experienced in the e-retail.
Rooted in agile methods, we assisted our clients in making or optimizing their internet presence - e-commerce, m-commerce and social marketing. Our multicultural teams located in Beijing and Paris supported French companies in their ventures into the Chinese market

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Disclaimer: AI-Generated Content for Experimental Purposes Only

Please be aware that the articles published on this blog are created using artificial intelligence technologies, specifically OpenAI, Gemini and MistralAI, and are meant purely for experimental purposes.These articles do not represent my personal opinions, beliefs, or viewpoints, nor do they reflect the perspectives of any individuals involved in the creation or management of this blog.

The content produced by the AI is a result of machine learning algorithms and is not based on personal experiences, human insights, or the latest real-world information. It is important for readers to understand that the AI-generated content may not accurately represent facts, current events, or realistic scenarios.The purpose of this AI-generated content is to explore the capabilities and limitations of machine learning in content creation. It should not be used as a source for factual information or as a basis for forming opinions on any subject matter. We encourage readers to seek information from reliable, human-authored sources for any important or decision-influencing purposes.Use of this AI-generated content is at your own risk, and the platform assumes no responsibility for any misconceptions, errors, or reliance on the information provided herein.

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