Marvin's advantage is practicing his product in public
Most agency founders talk about their service. Marvin runs the exact system he sells on his own account, in full view, and lets the results be the pitch.
Marvin Sanginés is the founder and CEO of notus, a personal-branding agency that builds content engines for B2B founders and executives across the DACH region and the US. He has been documenting the journey since 2018, and his LinkedIn is not a stream of agency ads. It is a working demonstration: every teardown of another founder's growth, every client transformation, every behind-the-scenes look at building notus is the same content engine he sells, run live on his own profile. The proof is the product.
That is the whole engine. Profitable personal branding is when your own content becomes your best sales asset, so every post either teaches your buyer something useful or shows them a real result, and the pipeline follows the reach. Marvin runs it with discipline: study a founder or a client, extract one repeatable lesson, attach a real number, and post it while it is still specific enough to be believed. It is the same case for founder-led marketing that he makes to every client.
'We help founders grow on LinkedIn.' A claim with no evidence, forgotten by the next scroll.
The same claim shown, not told: a named client who went from 400 to 23,000 followers, or a teardown of exactly how another CEO did it.
“Your voice is the moat. Not the tool.”
— The close of his most-reacted post, on AI, sycophancy, and content (243 reactions)
Five findings that repeated across 86 posts
- The teardown is the format. His biggest posts study other operators: a Bernie Sanders AI clip (243 reactions), a CEO who 10x'd his followers (212), a construction founder's day in the life. He teaches by example, then the example sells the service.
- Conversation over reach. He averages 118 reactions but earns 39 comments a post, a 33.1% comment-to-reaction ratio, roughly five times the LinkedIn norm. This is a discussion, not a broadcast.
- Modest reach, deliberate depth. None of the 86 posts cleared 1,000 reactions, and 51 landed in the 100 to 500 band. He is playing for the right 118 people, not the vanity number.
- People are the proof. He names clients, teammates, and other founders constantly, which turns every claim into a case study.
- Weekday discipline. About 4.7 posts a week, Monday and Tuesday heaviest, with Saturday the one quiet day (just 4 posts).
The numbers behind the account
The story here is not virality. It is a steady weekday cadence and a comment rate that runs about five times the platform norm.
Across the 86 posts we analyzed, Marvin published about 4.7 times a week, almost entirely on weekdays. The reach itself is honest and moderate: he averages 118 reactions, with a median of 107 and a top post at 243. None of the 86 posts cleared 1,000 reactions. Judge him on virality and you miss the point entirely, because the real signal sits in the comments.
When he posts
The content-type mix
Where the engagement comes from
The top posts
Want to see how your own cadence and comment ratio stack up? Run your profile through our free LinkedIn analyzer.
The six content pillars
Every post is one of six repeatable buckets, so a founder running an agency and documenting the build never runs out of things to say.
A study of how another founder, CEO, or company grew on LinkedIn, reverse-engineered into a repeatable lesson.
A viral moment (Bernie Sanders, Messi, Bezos) framed as a lesson for founders about content and personal branding.
The 2am doubts, the comparison trap, the 12-year arc. The honest lows behind the highlight reel.
Step-by-step LinkedIn and pipeline systems, often with a comment-to-get-it giveaway attached.
A named client's before-and-after, with the follower count, impressions, and pipeline attached.
The YouTube channel, the Lisbon villa, the hires, the honest quarter-by-quarter of a bootstrapped agency.
Pillar 1: Operator teardowns (the volume engine)
Why it works: The teardown is his single most repeated format. He picks a founder with a real result, reverse-engineers exactly what they did, and hands the reader a playbook they can copy. It performs because it is pure value, and because studying the best publicly positions Marvin as the person who understands the game.
Pillar 2: Cultural news-jacks (the reach engine)
Why it works: His top post takes a moment everyone is already watching and bends it toward his thesis: AI echoes your assumptions, so a distinct human voice is the moat. News-jacking a viral clip borrows its attention, and tying it back to content strategy makes the reach relevant instead of random.
Pillar 3: Founder vulnerability (the connection)
Why it works: He counters his own highlight reel on purpose. Forbes 30 Under 30 and public MRR on the outside, 2am doubt on the inside. Vulnerability posts perform because they make a founder relatable, and Marvin uses them to prove the exact point he sells clients: the honest, human story is what people actually connect with.
Pillar 4: Tactical GTM playbooks (the lead magnets)
Why it works: This post earned 318 comments, more than any other, because the ask was 'comment notus playbook and I'll send it.' A genuinely valuable lead magnet plus a comment-to-get-it mechanic turns reach into a list of named, self-identified buyers, and the algorithm rewards the comment surge with even more reach.
Pillar 5: Client transformations (the proof)
Why it works: The case study disguised as a story. He opens on the before-and-after number, names the real client, then walks through the exact process notus ran. It is the most direct sales asset he has, but because it reads as a teardown of someone else's success, it never feels like a pitch.
Pillar 6: Building notus in public (the documentary)
Why it works: He documents the unglamorous, long-term bets openly, including the ones his own COO questioned. Building in public earns trust that a polished case study cannot, because the audience watches the real arc, and it names teammates so followers meet the whole team before a sales call ever happens.
The hooks that earned the click
The through-line is specificity. Marvin opens on a named person, a hard number, or a moment you already recognize. He never warms up.
Open on a moment everyone is watching. 'Bernie Sanders just sat down and "interviewed" Claude AI on camera.'
Name a result, then promise the playbook. 'I studied this CEO who went from 2K to 20K LinkedIn followers in 9 weeks.'
Undercut the highlight reel. 'I've been an entrepreneur for 6+ years and still haven't "made it".'
Lead with the reps, then the offer. 'I've spent 7 years building 200+ LinkedIn Content Engines for B2B founders & executives.'
Open on the transformation. '3 years ago, Vicktoria Klich had 400 LinkedIn followers. Today, she has 23,000+.'
Anchor to a moment in the past. '2.5 years ago I made one of the most important hires to date.'
For the mechanics of writing openers like these, our guide to writing LinkedIn hooks goes deeper, and you can pressure-test your own first line in the free hook generator.
His top hooks, by the numbers
| Hook type | Opening line | Reactions |
|---|---|---|
| News-jack | 'Bernie Sanders just sat down and "interviewed" Claude AI on camera.' | 243 |
| Documentation | 'For the last 95 weeks, I've spent 1,000+ hours on my YouTube channel.' | 229 |
| Credibility + promise | 'I've spent 7 years building 200+ LinkedIn Content Engines.' | 223 |
| Teardown promise | 'I studied this CEO who went from 2K to 20K LinkedIn followers in 9 weeks.' | 212 |
A voice that teaches like a peer, not a guru
It reads like a sharp operator walking you through what he just noticed: short lines, real names, a number you remember, and a lesson at the end.
- Opens on the specific. A named person, a hard number, or a moment, never a vague windup.
- Teaches through other people. He studies clients, teammates, and rival founders out loud, so the lesson feels earned, not preached.
- Names real people. Clients, team, and other operators by name turn every claim into a case study.
- Short, single-idea lines. Generous white space and bold unicode subheads make a long post skimmable.
- Attaches a real number. $180k MRR, 40K followers, 95 weeks. Concrete outcomes over adjectives.
- Ends human. A one-line lesson, a soft ':)', or a 'PS. greetings from Lisbon' keeps it warm, not corporate.
The signature move is generosity. Marvin gives away the entire playbook, the 27-page doc, the client process, the step-by-step GTM system, because he trusts that the reader who wants it done for them will raise their hand. He does not gatekeep the how-to; he lets the depth of the how-to prove he is worth hiring. That is why a teardown of a rival founder's growth sells notus better than any ad about notus ever could.
What he does, and doesn't, do
- Study other operators out loud
- Name a real client and a real number
- Give away the full playbook
- Show the 2am doubt, not just the win
- Frame everything around personal branding
- Post faceless agency updates
- Pitch notus features directly
- Gatekeep the how-to behind a call
- Pretend the highlight reel is the whole story
- Lean on hype with no named example
Holding that voice across teardowns, case studies, vulnerable stories, and lead magnets at nearly five posts a week is the part almost nobody sustains, and it is exactly the gap CaptureFlow closes. CaptureFlow is an AI content agent that turns your expertise into weeks of on-brand content for every platform. You capture one idea in 5 minutes (a voice note, a client call, a founder you just studied), and CaptureFlow, trained on your voice and your past posts, drafts native content for each channel, a LinkedIn post, an X thread, a carousel, a short video, a quote image, so holding a notus-level cadence never costs you the voice. See how the AI content agent works.
The systems underneath the posts
Two loops quietly turn 86 posts into a comment list, discovery calls, and a bootstrapped seven-figure agency.
The lead-magnet funnel
The giveaway converts reach into a list of named, self-identified buyers. His 27-page-playbook post pulled 318 comments, and every comment is a warm lead who raised their own hand.
The documentation flywheel
- 1Document the build openlyThe YouTube vlogs, the team, the client wins, the honest lows.
- 2The audience meets the whole team'Prospects already know Selim Burcu when hopping on a sales call.'
- 3Familiarity warms the sales callBuyers arrive already trusting the people and the process.
- 4New clients get real resultsFollowers, impressions, and pipeline worth posting about.
- 5The client win becomes the next postA named case study that recruits the next client.
Choosing the media
A screenshot of the founder's post or a carousel breaking the lesson into steps.
The before-and-after numbers, named, often as a clean carousel.
A vlog clip or a walk-and-talk with a founder, raw and human.
A step-by-step carousel with a comment-to-get-it lead magnet.
Plain text or a candid photo. The honesty carries it.
A screenshot of the viral moment, framed as a lesson for founders.
This profitable-personal-branding model is a cousin of the one we mapped in the Amelia Sordell playbook, and it is the template most B2B founders and executives should study: run your own content engine in public, and let the results be the pitch.
Your 30-day challenge
Run the playbook for a month. Turn the operators you study and the clients you serve into daily proof, then point the reach at a real offer.
- Days 1-2: Pick one founder you admire and reverse-engineer exactly how they grew
- Days 3-4: Post that teardown as a step-by-step lesson anyone can copy
- Days 5-7: Tie a viral moment from this week back to a lesson for your buyer
- Days 8-9: Tell one client or customer story with a real before-and-after number
- Days 10-11: Name a teammate and the specific thing they are great at
- Days 12-14: Share the honest lows behind your own highlight reel
- Days 15-17: Package your best system into a genuine lead magnet
- Days 18-19: Post it with a comment-to-get-it CTA and reply to every commenter
- Days 20-21: Turn one workflow into a step-by-step carousel
- Days 22-24: Document one long-term bet you are making, and why
- Days 25-27: Reply to every comment to feed the conversation ratio
- Days 28-30: Review analytics and double down on the format that reached furthest
Want the cadence without writing every teardown by hand? That is exactly what CaptureFlow's content agent automates. See pricing to start turning your expertise into weeks of content.
The metrics to track weekly
| Metric | Benchmark to aim for |
|---|---|
| Posts per week | 4+ |
| Comment-to-reaction ratio | 20%+ |
| Comments per post | 30+ |
| Named people per week | 5+ |
| Lead-magnet comments per campaign | 50+ |
| Client stories per month | 2+ |
The takeaways
- 01Teach by example. Marvin's biggest format is the operator teardown: study a founder's real growth, then hand the reader the playbook.
- 02Optimize for comments, not just likes. He earns a 33.1% comment-to-reaction ratio, about five times the LinkedIn norm.
- 03Give the whole playbook away. His 27-page-doc giveaway pulled 318 comments and a list of named, self-identified buyers.
- 04Name a real client and a real number in almost every post. Specificity is what turns a claim into proof.
- 05Show the 2am doubt, not just the win. Vulnerability posts prove the exact point he sells: the honest story connects.
- 06Batch-capture your teardowns and client wins so a near-five-a-week cadence survives a heavy client week.
Frequently asked questions
- How did Marvin Sanginés grow his LinkedIn following?
- By running the exact content engine he sells at notus on his own profile: operator teardowns, tactical playbooks, and named client transformations, about 4.7 times a week. Across 86 recent posts he averaged 118 reactions and 39 comments each, and his account passed 41K followers.
- What kind of post performs best for Marvin Sanginés?
- Teardowns and news-jacks that teach a lesson. His top post, on Bernie Sanders 'interviewing' Claude and what it means for content, earned 243 reactions, and his 27-page-playbook giveaway pulled 318 comments, the most of any post.
- How often does Marvin Sanginés post, and when?
- About 4.7 times a week across the 86 posts we analyzed, almost entirely on weekdays. Monday and Tuesday are his heaviest days, and Saturday is the one quiet day, with just 4 posts landing on it.
- How do you apply this playbook without spending hours a week?
- Batch-capture the one lesson from each operator you study and each client you serve, then let a content agent draft in your voice. CaptureFlow turns one 5-minute capture into a week of native posts across platforms, so you can hold the cadence without writing every teardown by hand.
