Dennis Trautwein

Dennis Trautwein

Software engineer and researcher. I measure peer‑to‑peer networks and feed what I find back into protocol design. Co-founder of ProbeLab.

Dennis Trautwein

Recognition

2023

Applied Networking Research Prize

IRTF and Internet Society

For the SIGCOMM '22 paper on the design and evaluation of IPFS. One of six winners that year, with an invited talk at the IRTF open meeting at IETF 118.

  1. 2021

    PhD Fellowship

    Protocol Labs

    Two years of funding for my doctoral research on content discovery and retrieval in IPFS.

  2. 2014

    BEXUS 19 balloon flight

    DLR and the Swedish National Space Agency

    Our Kiel student team's ADAM experiment flew to the stratosphere on BEXUS 19 and measured the angular distribution of charged particles. My bachelor thesis simulated its sensor system.

  3. 2011

    Deutschlandstipendium

    German federal government and private sponsors

    Germany's national merit scholarship, given for my results in the Abitur, the German highschool-leaving exams. One of 70 recipients in Schleswig-Holstein that year.

Selected publications

All 16 publications
  1. ACM IMC '26

    Large-Scale Measurement of NAT Traversal for the Decentralized Web: A Case Study of DCUtR in IPFS

    Dennis Trautwein, Cornelius Ihle, Moritz Schubotz, Corinna Breitinger, Bela Gipp

  2. IEEE INFOCOM '24

    IPFS in the Fast Lane: Accelerating Record Storage with Optimistic Provide

    Dennis Trautwein, Yiluo Wei, Yiannis Psaras, Moritz Schubotz, Ignacio Castro, Bela Gipp, Gareth Tyson

  3. USENIX NSDI '24

    The Eternal Tussle: Exploring the Role of Centralization in IPFS

    Yiluo Wei, Dennis Trautwein, Yiannis Psaras, Ignacio Castro, Will Scott, Aravindh Raman, Gareth Tyson

  4. ACM SIGCOMM '22

    Design and Evaluation of IPFS: A Storage Layer for the Decentralized Web

    Dennis Trautwein, Aravindh Raman, Gareth Tyson, Ignacio Castro, Will Scott, Moritz Schubotz, Bela Gipp, Yiannis Psaras

    Applied Networking Research Prize 2023

Experience

Full CV
  1. 2025 to now

    Co-founder, ProbeLab

    Founded with Yiannis Psaras and Mikel Cortes-Goicoechea. We measure various peer-to-peer networks, publish what we find, and feed it back into protocol design.

  2. Sep 2022 to 2025

    Research engineer, Protocol Labs / IPShipyard

    Measurement of the IPFS and libp2p networks: crawlers, telemetry, and the analysis that turns raw data into something a protocol team can act on. The ProbeLab team started here.

  3. 2020 to 2026

    Doctoral researcher, University of Göttingen

    PhD in computer science in Bela Gipp's group. The thesis measures and optimises peer-to-peer networks, with IPFS as the case study.

  4. May 2020 to 2022

    Industrial PhD candidate, OriginStamp AG

    Frontend work in Angular, alongside the infrastructure work that kept the company running on AWS and Terraform.

  5. Jul 2018 to Apr 2020

    Software engineer, freiheit.com

    Built the real time event backend behind Daimler's Mercedes me app, in a Go and Kubernetes setup on Azure.

  6. Earlier

    Web and mobile developer at weluse GmbH, Research assistant at CAU Kiel, Software developer at TouchTech Labs, iOS developer intern at TouchTech.

Education

  1. PhD, Computer Science

    University of Göttingen, 2026

  2. MSc, Physics

    Kiel University, 2018

  3. BSc, Physics

    Kiel University, 2014

Service

  1. Reviewer, JCDL

    ACM/IEEE Joint Conference on Digital Libraries

Where I have lived

  1. Kiel Germany

    until 2015

  2. Wellington New Zealand

    2015 to 2016

  3. Melbourne Australia

    2016

  4. Kiel Germany

    2017 to 2018

  5. Hamburg Germany

    2018 to 2020

  6. Kreuzlingen Switzerland

    2020 to 2025

  7. Kiel Germany

    since 2025

I tend to reach for a measurement before an opinion.

If you have a hard problem in networking or distributed systems, or data you think I would enjoy, write to me.

Email me

contact@dtrautwein.eu