Max Münstermann 🫴
Founder @ closedin.io | GTM engineer - Reach Your ICP More Effectively
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
GTM Index
- CLAYJOB
- Clay Partner11M
Clay Partner
Clay
- INSTANTLYJOB
- Certified Instantly Expert11M
Certified Instantly Expert
Instantly
- DEEKIEJOB
- Mede-eigenaar3Y
Mede-eigenaar
Deekie
- APOLLO.IOJOB
- Apollo Certified Partner4M
Apollo Certified Partner
Apollo.io
- CLOSED:INJOB
- Founder1Y 6M
Founder at closed:in | GTM engineer - Reach Your ICP More Effectively
closed:in
- FLOWKEYJOB
- Sourcing & Procurement Con…5M
Sourcing & Procurement Consultant
Flowkey
- VAMPJOB
- Mede-oprichter8M
Mede-oprichter
VAMP
- BRANDSOMJOB
- Sales Mgr6M
Sales Manager
Brandsom
- Integrator specialist1Y 4M
Integrator specialist
Brandsom
- E-DRIVERS PRIVECHAUFFEURSJOB
- Privéchauffeur5M
Privéchauffeur
E-Drivers Privechauffeurs
- ACTEURSBUREAU KAPOKJOB
- Trainingsacteur10M
Trainingsacteur
Acteursbureau Kapok
- Job: Brandsom — Integrator specialist · 2021-12 – 2023-04 · 1y 4mo
- Job: Clay — Clay Partner · 2025-09 – present · 11 mo
- Job: Instantly — Certified Instantly Expert · 2025-09 – present · 11 mo
- Job: VAMP — Mede-oprichter · 2023-10 – 2024-06 · 8 mo
- Job: E-Drivers Privechauffeurs — Privéchauffeur · 2021-08 – 2022-01 · 5 mo
- Job: Flowkey — Sourcing & Procurement Consultant · 2024-09 – 2025-02 · 5 mo
- Job: Brandsom — Sales Manager · 2023-04 – 2023-10 · 6 mo
- Job: Deekie — Mede-eigenaar · 2023-08 – present · 3y
- Job: Apollo.io — Apollo Certified Partner · 2026-04 – present · 4 mo
- Job: Acteursbureau Kapok — Trainingsacteur · 2021-01 – 2021-11 · 10 mo
- Job: closed:in — Founder at closed:in | GTM engineer - Reach Your ICP More Effectively · 2025-02 – present · 1y 6mo
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