Samuel Klacman
Co-founder @ Celesto AI | ex-Google | Proud vibe-coding junkie | Can do a handstand for 30s
GTM Index
- CELESTO AIJOB
- Co-Founder6M
Co-Founder
Celesto AI
- ANTLERJOB
- Entrepreneur in Residence1M
Entrepreneur in Residence
Antler
- RELAY ROADJOB
- Founder (GTM Eng)9M
Founder (GTM Engineer)
Relay Road
> helping companies Go-To-Market (...keep going straight...then turn on the first right...then left...and you find the market)
- GOOGLEJOB
- got a promotion!2M
got a promotion!
Google
- Growth Strategist (Sales &…1Y 7M
Growth Strategist (Sales & Marketing)
Google
> Blended strategy & execution skills to turn complex products and stakeholder dynamics into Paid Search growth systems - Partnered with clients’ leadership teams to co-create long-term marketing strategies, translating complex Google & YouTube Ads capabilities into clear, data-driven, and measurable plans that drove sustained growth - Consistently outperformed product adoption KPIs by 25% across a £10M client portfolio (SaaS, lead-gen, retail) by combining deep product knowledge with analytical insights to address complex client needs - Built AI-driven automated workflows and client management playbooks and scaled it across teams by delivering 20+ training sessions, earning an EMEA-leve…
- Intern3M
Intern
Google
> Showed businesses that used Google Ads how to make their website UX better to increase conversion rates
- RARE FOUNDERSJOB
- Launch & Growth Lead1Y
Launch & Growth Lead
Rare Founders
> Built the muscle to lead teams in creating repeatable growth systems that built a startup community - Launched a startup community and led a volunteer team to design operational frameworks that launched an engaged startup community: 5 events, 200+ attendees, 50 pitches, 1K subscribers, and 100K+ impressions
- FUNDRAISING BOOTCAMPJOB
- Partnerships3M
Partnerships
Fundraising Bootcamp
> Looked for partnerships to help accelerators & VCs teach their startups how to raise money - Collaborated directly with the founders to drive European business expansion, securing 2 key partnerships through targeted outreach and demonstrating a hands-on approach to growth initiatives - Acquired foundational insights into venture capital dynamics, startup growth, and investment decision-making during Seed to Series C fundraising stages across diverse sectors - Contributed to strategic process improvements by optimizing sales and marketing funnels for bootcamp programs, involving data analysis and reporting on growth metrics to inform future strategies and improve efficiency
- TINKER MODEJOB
- Doing and learning things5Y 11M
Doing and learning things
Tinker Mode
☑ led a nation-wide anti-corruption movement at 17 ☑ created a footwear brand that made fun of what politicians say ☑ was a research intern at a behaviour consultancy ☑ did marketing for a cool book author called Nir Eyal ☑ did a marketing internship at an alcoholic beverage company ☑ tried app coding, photo editing, video editing,...you name it
- TURING STUDENTS ROTTERDAMJOB
- President11M
President
Turing Students Rotterdam
> Led a 26-member EdTech society team (Turing Students), organizing coding courses, workshops, and events
- AMAZONJOB
- Program Management Intern6M
Program Management Intern
Amazon
> Cleaned data & fixed places where data got dirty
- Job: Celesto AI — Co-Founder · 2026-04 – present · 4 mo
- Job: Antler — Entrepreneur in Residence · 2026-04 – 2026-05 · 1 mo
- Job: Relay Road — Founder (GTM Engineer) · 2025-07 – 2026-04 · 9 mo — > helping companies Go-To-Market (...keep going straight...then turn on the first right...then left...and you find the market)
- Job: Google — got a promotion! · 2025-04 – 2025-06 · 2 mo
- Job: Google — Growth Strategist (Sales & Marketing) · 2023-09 – 2025-04 · 1y 7mo — > Blended strategy & execution skills to turn complex products and stakeholder dynamics into Paid Search growth systems - Partnered with clients’ leadership teams to co-create long-term marketing strategies, translating complex Google & YouTube Ads capabilities into clear, data-driven, and measurable plans that drove sustained growth - Consistently outperformed product adoption KPIs by 25% across a £10M client portfolio (SaaS, lead-gen, retail) by combining deep product knowledge with analytical insights to address complex client needs - Built AI-driven automated workflows and client management playbooks and scaled it across teams by delivering 20+ training sessions, earning an EMEA-leve…
- Job: Rare Founders — Launch & Growth Lead · 2024-01 – 2025-01 · 1y — > Built the muscle to lead teams in creating repeatable growth systems that built a startup community - Launched a startup community and led a volunteer team to design operational frameworks that launched an engaged startup community: 5 events, 200+ attendees, 50 pitches, 1K subscribers, and 100K+ impressions
- Job: Fundraising Bootcamp — Partnerships · 2023-03 – 2023-06 · 3 mo — > Looked for partnerships to help accelerators & VCs teach their startups how to raise money - Collaborated directly with the founders to drive European business expansion, securing 2 key partnerships through targeted outreach and demonstrating a hands-on approach to growth initiatives - Acquired foundational insights into venture capital dynamics, startup growth, and investment decision-making during Seed to Series C fundraising stages across diverse sectors - Contributed to strategic process improvements by optimizing sales and marketing funnels for bootcamp programs, involving data analysis and reporting on growth metrics to inform future strategies and improve efficiency
- Job: Google — Intern · 2022-07 – 2022-10 · 3 mo — > Showed businesses that used Google Ads how to make their website UX better to increase conversion rates
- Job: Turing Students Rotterdam — President · 2021-07 – 2022-06 · 11 mo — > Led a 26-member EdTech society team (Turing Students), organizing coding courses, workshops, and events
- Job: Amazon — Program Management Intern · 2021-08 – 2022-02 · 6 mo — > Cleaned data & fixed places where data got dirty
- Job: Tinker Mode — Doing and learning things · 2017 – 2022 · 5y — ☑ led a nation-wide anti-corruption movement at 17 ☑ created a footwear brand that made fun of what politicians say ☑ was a research intern at a behaviour consultancy ☑ did marketing for a cool book author called Nir Eyal ☑ did a marketing internship at an alcoholic beverage company ☑ tried app coding, photo editing, video editing,...you name it
- School: Rotterdam School of Management, Erasmus University — Bachelor of Science, International Business Administration
- School: Johannes Kepler Universität Linz — Artificial Intelligence
Skills
Playbooks
All playbooks →No playbooks indexed for this profile yet.
More GTM Engineers
Browse all →- Hashim SyedAI GTM Lead, Startups @ Google | TEDx Keynote Speaker | xMeta & xMicrosoft | Entrepreneur | Techstars Mentor | Forbes Council
Googleex-Meta
- Aditya Vikram BhuwaniaCloud and AI Sales Leadership @ Google Cloud| Ex-PM Lead @Amazon(AWS/Alexa) & AMDGoogle
ex-AMD
- Ankit RaoGTM Strategy & Project / Program Management Leader - SMB Ads Monetization | Author | MBA | Ex- Lazada, Google, Amazon | PMP
Grab
ex-Lazada
- Julien HOUDAYERGlobal Programmatic Video GTM Principal @ Amazon Ads | CTV & Streaming TV | Amazon DSP | Driving the shift to streaming-first advertising
Amazonex-S4M
