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Portfolio · 2026

Guerlain Nérestan

Guerlain Nérestan.

Hi, I'm Guerlain, but here, everyone calls me Garry. I'm from Toulouse, France. I'm 24. As far back as I can remember, I've wanted to create things and become an entrepreneur. Back in France, while my friends went into finance or consulting internships, I was building companies, getting my hands dirty, obsessing over execution.

I'm passionate about sports, rugby, and tech.

Ironically, I never really enjoyed school. But I knew it could be a ticket into Silicon Valley. So I joined UC Berkeley for the final year of my Master's, and gradually built my place in the ecosystem.

See the work

In the past 15 months: 3 startups. 1 exit.
Scaled my personal brand to
12k across social media: @siliconvalleybro.
All built from scratch.

3,005
Instagram
2,864
TikTok
6,201
LinkedIn
12,070
Total

The three startups

2025 – 2026 · San Francisco

Took an AI clinical platform from under 4 K users to over 250 K.

62.5×
User growth in 9 months
100K+
Monthly active users
< $1
Blended CAC
  • Drove App Store rating from cold start to 4.9 with 5,000+ ratings and ranked #1 medical app in target geographies during campaign peaks.
  • Built and scaled a multi-channel paid acquisition engine — Meta Ads from 0 → 4M monthly accounts reached.
  • Built a creator-led content engine end-to-end on Instagram + TikTok. Drove 1M+ cumulative views across social and the channel attributed ~20% of total sign-ups.
  • Launched At the Point of Care, the first clinician-led podcast in the AI-health space — 13 episodes across 13 specialties featuring KOLs from Stanford, Northwell, and top CIOs.

2025 · Paris · Acquired

Founded a B2B AI sales-automation agency. Sold it in six months.

$10K
MRR at exit
2,000+
Cold calls placed
20+
B2B clients signed
  • Generated $10K MRR in 6 months by building a B2B AI sales-automation agency from scratch, owning GTM and sales end-to-end: 2,000+ cold calls placed, 4 strategic partnerships closed, and 20+ B2B clients signed across HR, support, and sales.
  • Recruited and managed a 4-person technical team (AI developers, no-code experts), partnering directly with engineering to ship conversational AI agents integrated into client websites and internal tools.
  • Designed an AI-native outbound and ops stack (CRM enrichment, automated reporting, segmented sequencing) that compounded pipeline week over week.
  • Ran a clean founder-led exit after 6 months.

2024 – 2025 · Remote · EU

Sole GTM operator on a 2-founder team. Took a multi-model AI chatbot to five-figure MRR.

5-fig
MRR reached
10
Paying clients · 4 verticals
~700
Daily outbound touches
  • Joined a 2-founder technical team as the only GTM operator and took the product to five-figure MRR with 10 paying clients across 4 verticals (e-commerce, SaaS, consulting, tourism) — cross-vertical traction proved the playbook ports beyond a single ICP.
  • Ran a solo outbound engine at SDR-team volume: 500 cold emails + 200 cold calls per day (~700 daily touches), AI-augmented end-to-end — sourcing, per-vertical sequencing, call prep, reply triage.
  • Closed 2 paid referral partnerships with consulting firms — turned established advisors into a zero-CAC distribution channel reselling Causerie into accounts I couldn't reach cold.

The footprint

250K+
Users scaled
1M+
Video views
$10K
MRR at exit
12,070
Total community

My biggest achievements in the past year, at 24

  • 🚀Scaled a YC startup to 250K+ users.
  • 🎬Created content that reached 1M+ video views total.
  • 💸Built my first company from scratch and scaled it to $10K MRR until exit.
  • 📱Reached 12,070 total subscribers across all socials.
  • 🚴Survived a bike accident in Berkeley: 6 screws and a metal plate in my left ankle 🦾

Background

Languages French native · English fluent · Spanish conversational