Personal Profile

I am currently working for the DOE as a software engineer for network automation at ESnet. I am a former DAAD research fellowship recipient at the UC Berkeley Netsys Lab group, the ICSI, and the EIT Digital Silicon Vally hub. I received a Dr.-Ing. degree (PhD equivalent) from the faculty of EECS at TU Berlin in 2015 for my dissertation on Software Defined Networking based Data Center Services, while I was working for the Complex and Distributed IT Systems department. My research focus is in scope of network technologies and SDN/NFV based data center solutions. I have a total of 10 years experience in academic and industrial research.

Career Profile

Highly motivated, hardworking, and keen to learn. Good team working and organizational qualities achieved through various projects within academia. Strong research experiences in Software-Defined Networking (SDN) and Cloud Computing, demonstrated by the listed peer-reviewed scientific publications. Excellent knowledge of SDN, Cloud Computing, Network Functions Virtualization (NFV) and Edge Computing applications, frameworks, hardware, and software platforms and emulators.

Experiences

Software Engineer

Oct 2020 - Present
Department of Energy, ESnet / LBNL, Berkeley

-Reducing the router deployment time by developing several network automation services for ESnet 6 by implementing multiple Cisco NSO services, actions, and automated tests.

MTS - Lead Engineer Network Services

May 2019 - Sep 2020
Join Digital, San Francisco / San Jose

- Enabled new service release for a customer VPN by designing and deploying a WireGuard based VPN solution in the Equinix Silicon Valley 1 data center
- Achieved around 60% deployment cost reduction by delivering a hardware / software architecture and integration proposal by using open source components. This work includes implementation of Proof of Concept (PoC) prototypes and the production-ready software stack.
- Developed 3rd party app API for the Join OpenFlow controller by implementing a RabbitMQ connector.
- Developed a test suite for conformance tests for the Join OpenFlow controller.

Visiting Researcher

Jan 2019 - April 2019
FU Berlin, Berlin

- Scientific publications and reviews
- DAAD reporting

Postdoctoral Researcher

Jan 2017 - Dec 2018
UC Berkeley, ICSI, and EIT Digital, Berkeley and San Francisco

DAAD postdoctoral fellowship (FITweltweit):
- Enabled edge application deployment on NFV infrastructures, resulting in a performance improvement of up to 80% latency and up to 95% bandwidth reduction by implementing an open source edge computing framework (Open Carrier Interface).
- Verified an edge computing resilience library by validating 100% state & data consistency by implementing and testing a mock IoT sensor value aggregation client-edge-server (CES) application.
- Scientific publications and reviews
- Organisation of the SDNCC Workshops
- Expanded and upgraded an open NFV experimentation platform for network researchers by restructuring and updating the EIT Digital open SDN/NFV testbed.

Researcher & Sr. Researcher

Oct 2010 - Dec 2016
TU Berlin, Berlin

- Project work on management and operational level: EU Projects ASCETiC, OFELIA and BMBF Project Forschungscampus
- Reduced average power consumption of cloud computing by up to 35% by deploying an innovative cloud testbed installation and software stack on a 201 nodes cluster.
- Enabled seamless device interoperability regardless of the underlying communication standard for a Smart Home IoT cloud computing approach by developing a generic device integration platform.
- Project cooperation with T-Systems: LTE
- Collaboration on several EU project proposals
- Scientific publications and reviews
- Teaching: Distributed systems (project) and operation of complex IT systems (course)
- Supervision of Bachelor-, Diploma- and Master-Theses

Consultant and Software Engineer

Mar 2010 - Sep 2010
IT Service Omikron GmbH, Berlin

- Development of a mobile devices optimized visualization environment for the Berlin public transfer internal statistic data visualization
- Implementation of an advanced document administration application based on OpenCMS
- Review and assessment of a system specification for the Berlin Police department document management system(POLIKS)

Research Associate

Jul 2008 - Feb 2010
DCAITI and TU Berlin, Berlin

- Improved a navigation system prototype for Daimler vehicles by implementing additional search modules for the PoI queries for the GUIDE state machine execution environment.
- Enabled the control of the navigation system prototype via Daimler’s central vehicle control unit by developing a CAN to TCP/IP message translation application.
- Implemented an Android point of interest visualization application by augmenting the camera live stream with information from a database.
- Teaching: Augmented Reality Android Student-Project

Projects

This section provides an overview of the projects I was involved in:

ASCETiC - Adapting Service lifeCycle towards EfficienT Clouds (ASCETiC) was focused on providing novel methods and tools to support software developers aiming to optimise energy efficiency and minimise the carbon footprint resulting from designing, developing, deploying, and running software in Clouds.
OFELIA - OpenFlow in Europe: Linking Infrastructure and Applications: Aim of the OFELIA project was to provide a unique network infrastructure for developers and researchers to experiment with. Therefore OFELIA uses OpenFlow, which is an upcoming network technology for network visualization through standardized and secured interfaces. OpenFlow allows developers to control the network itself as part of the experiment. OFELIA will provide high performance networking equipment for experiments under real network conditions.
Forschungscampus Connected Technologies - The aim of the Forschungscampus Connected Technologies project was to establish an interdisciplinary, long term research cluster, where partners from academia and industry work together towards efficient technologies that integrate and connect devices and systems for smart homes and smart buildings.
BAER - Development of an innovative information system for theme parks in cooperation with the Berlin Zoo

Publications

This section lists some selected publications. Please find the complete list on google scholar.

Open Carrier Interface: An Open Source Edge Computing Framework
Marc Körner, Torsten M. Runge, Aurojit Panda, Sylvia Ratnasamy, and Scott Shenker
In Proceedings of the 2018 Workshop on Networking for Emerging Applications and Technologies (NEAT'18 - SIGCOMM), Budapest, Hungary, August 2018, pages 27-32, ACM
Evaluation of a Cloud Federation based on Software Defined Networking
Marc Koerner, Constantin Gaul, and Odej Kao
In Proceedings of the 40th IEEE Conference on Local Computer Networks (LCN), pages 1–8, Clearwater Beach, FL, USA, October 2015. IEEE
The OFELIA TUB-Island an Europe-wide Connected OpenFlow Testbed
Marc Koerner
In Proceedings of the 38th IEEE Conference on Local Computer Networks (LCN), pages 452–455, Sydney, Australia, oct 2013. IEEE publishers
Multiple Service Load-Balancing with OpenFlow
Marc Koerner and Odej Kao
In Proceedings of the 13th International Conference on High Performance Switching and Routing (HPSR), IEEE, pages 210–214. IEEE publishers, 2012