Max Münstermann 🫴

Founder @ closedin.io | GTM engineer - Reach Your ICP More Effectively

Amsterdam
closed:inex-Brandsomex-VAMP

GTM Engineer turning Clay, Instantly and LinkedIn into revenue engines. At closed:in we act as your GTM engineering partner.

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We design, build and optimize full outbound systems for B2B brands. From Clay powered data enrichment and segmentation to Instantly driven email engines and LinkedIn workflows that actually get replies. Our stack blends automation, personalization and creativity into one predictable revenue engine. Whether it’s mapping your ICP, crafting smart multichannel campaigns or scaling from 100 to 100000 contacts, we make sure your GTM motion runs like code. ✅ Clay for data and segmentation ✅ Instantly for multi inbox email automation ✅ LinkedIn for trust and human connection We call it engineering your outbound, not guessing it. If you are a B2B founder or marketer who wants to build a repeatable growth engine, let’s talk. 👉 Message me here or visit io

Career TimelineNOW → PAST

GTM Index

  1. CLAYJOB
    1. Clay Partner
      11M
  2. INSTANTLYJOB
    1. Certified Instantly Expert
      11M
  3. DEEKIEJOB
    1. Mede-eigenaar
      3Y
  4. APOLLO.IOJOB
    1. Apollo Certified Partner
      4M
  5. CLOSED:INJOB
    1. Founder
      1Y 6M
  6. FLOWKEYJOB
    1. Sourcing & Procurement Con…
      5M
  7. VAMPJOB
    1. Mede-oprichter
      8M
  8. BRANDSOMJOB
    1. Sales Mgr
      6M
    2. Integrator specialist
      1Y 4M
  9. E-DRIVERS PRIVECHAUFFEURSJOB
    1. Privéchauffeur
      5M
  10. ACTEURSBUREAU KAPOKJOB
    1. Trainingsacteur
      10M

Time in market 5Y 7MOpen 5Closed 6Stints 11

gtmindex.io/p/max-munstermann

  1. Job: Brandsom — Integrator specialist · 2021-12 – 2023-04 · 1y 4mo
  2. Job: Clay — Clay Partner · 2025-09 – present · 11 mo
  3. Job: Instantly — Certified Instantly Expert · 2025-09 – present · 11 mo
  4. Job: VAMP — Mede-oprichter · 2023-10 – 2024-06 · 8 mo
  5. Job: E-Drivers Privechauffeurs — Privéchauffeur · 2021-08 – 2022-01 · 5 mo
  6. Job: Flowkey — Sourcing & Procurement Consultant · 2024-09 – 2025-02 · 5 mo
  7. Job: Brandsom — Sales Manager · 2023-04 – 2023-10 · 6 mo
  8. Job: Deekie — Mede-eigenaar · 2023-08 – present · 3y
  9. Job: Apollo.io — Apollo Certified Partner · 2026-04 – present · 4 mo
  10. Job: Acteursbureau Kapok — Trainingsacteur · 2021-01 – 2021-11 · 10 mo
  11. Job: closed:in — Founder at closed:in | GTM engineer - Reach Your ICP More Effectively · 2025-02 – present · 1y 6mo

Skills

ClayInstantlyMakeoutbound systemautomationOndernemerschapEigenaarschapleadgenAdverterenE-commerceAnalytisch denkvermogenConsultingIntegrationZakelijke samenwerkingsverbanden opbouwenNegotiationLeadershipTeam BuildingInnovationProject ManagementData AnalysisMicrosoft ExcelMarketingSales

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