Hello

I'm Jendrik. I work on products and companies of the future with inspiring and creative people. I was a machine learning researcher, PhD candidate and a senior software engineer in small and large scale tech companies such as Coinbase. Currently, I'm leading the infrastructure investments team as Principal Research Engineer at the European crypto investment firm Greenfield Capital. My fund investments include Foundation Devices, Stroom, Arcium and Drosera.

Writings

2025-03-04

End of Alcohol
End of Alcohol
2025-02-11

Investing into Drosera's Seed Round
Investing into Drosera's Seed Round
2024-05-09

Leading Arcium's Strategic Round
Leading Arcium's Strategic Round
2024-03-07

Cold Shower Therapy and Ritual
Cold Shower Therapy and Ritual
2023-12-22

Obsidian and (Local) LLMs
Obsidian and (Local) LLMs
2023-09-21

Starting to Sail
Starting to Sail
2023-06-30

Enablers and Catalysts in Lightning Network
Enablers and Catalysts in Lightning Network
2023-05-31

From Scratch in Zola
From Scratch in Zola
2021-06-30

The Multi-Chain Future
The Multi-Chain Future
2020-03-18

Trust in Blockchains and Smart Contracts
Trust in Blockchains and Smart Contracts
2019-10-03

Kafcache: Memcached and Kafka Streams
Kafcache: Memcached and Kafka Streams
2019-06-18

Reliable Fast Access to On-Chain Data
Reliable Fast Access to On-Chain Data
2018-12-18

Weird Quirks we found in Ethereum Nodes
Weird Quirks we found in Ethereum Nodes
2018-09-30

Using Monix with Kafka, Avro and Schema Registry
Using Monix with Kafka, Avro and Schema Registry
2018-08-25

Via Negativa Minimalism
Via Negativa Minimalism
2018-04-02

Countermeasures Against Phone Addiction
Countermeasures Against Phone Addiction
2017-02-09

Monitoring Kafka Streams Metrics via JMX
Monitoring Kafka Streams Metrics via JMX
2016-10-24

Released Mocked Streams for Apache Kafka
Released Mocked Streams for Apache Kafka
2016-10-15

Stateful Streaming in Spark and Kafka Streams
Stateful Streaming in Spark and Kafka Streams
2016-09-30

Testing Topologies with Kafka Streams
Testing Topologies with Kafka Streams
2016-05-22

Minimalism and Elegant Code
Minimalism and Elegant Code