Where does Jendrik Poloczek work?

Jendrik Poloczek is Investor at Greenfield One.

What check size does Jendrik Poloczek write?

Jendrik Poloczek typically writes checks of $100K – $5M.

Jendrik Poloczek

Investor

Investor at Greenfield One

Berlin, Germany

Writes $100K – $5M checks · typically $1.5M

About

Jendrik Poloczek is a Blockchain Security Engineer at Aikido Security specializing in AI-based penetration testing. He brings nearly a decade of cryptocurrency industry experience across founding, engineering leadership at Coinbase, and venture capital roles at Greenfield Capital, where he participated in deploying approximately $9 million in crypto investments. Prior to his crypto work, he built event-based data processing systems using Apache Spark and Kafka, and created an open-source Scala stream testing framework adopted by companies including Sky and BlaBlaCar.

Experience

Aikido SecurityBlockchain Security Engineer (AI pentest)current2026 — present
Greenfield CapitalPrincipal Research Engineer and IC member2022 — 2025Berlin, Germany
Greenfield CapitalHead of Engineering2020 — 2022Berlin, Germany
CoinbaseSenior Software Engineer2020San Francisco, California, United States
TokenAnalystHead of Engineering2019 — 2020London Area, United Kingdom
TokenAnalystTech Lead2018 — 2019London Area, United Kingdom
ReeboCo-Founder, CTO2018 — 2019Berlin, Germany
Entrepreneur FirstEntrepreneur In Residence2018Berlin, Germany
Hive StreamingBackend and Data Engineer2016 — 2017Stockholm
plista GmbHData Engineer2014 — 2015Berlin
Carl von Ossietzky Universität OldenburgPhD Researcher2013 — 2014Oldenburg

Education

Carl von Ossietzky University of OldenburgMaster of Science (MS), Informatik2007 — 2013

Skills & more

Google Cloud Platform (GCP)Smart Contracts6Open Source15Git5React.js4Cascading Style Sheets (CSS)2Amazon S32Apache Spark Streaming2Solidity1SQLScala25Linux15

+12 more

PythonJavaCGrafanaLaTeXC++Amazon Web Services (AWS)OAuthSystems EngineeringData AnalysisData ScienceData Modeling

Languages Deutsch · Englisch · Italian

Application Security and Secure Coding Training course in Go — Codebashing
First Step Korean — Coursera
Learning How to Learn: Powerful mental tools to help you master tough subjects — Coursera

From Jendrik's professional profile.

Colleagues at Greenfield One

Andrzej Dzius

Partner and Chief Technology Officer at Greenfield One

Anies Khan

Associate at Greenfield One

Christian Braun

Director IT at Greenfield One

Christian Zimmermann

Partner and Chief Operating Officer at Greenfield One

Christoph Rosenmayr

Analyst at Greenfield One

Claude Donzé

Principal at Greenfield One

David An

Investor at Greenfield One

Dennis Unruh

VP Finance & Operations at Greenfield One

Frequently asked questions

Where does Jendrik Poloczek work?: Jendrik Poloczek is Investor at Greenfield One.
What check size does Jendrik Poloczek write?: Jendrik Poloczek typically writes checks of $100K – $5M.