David Shaughnessy
Senior Software Engineer at Arm
Connacht, Ireland
Summary
👤
Senior🎓
Top SchoolDavid Shaughnessy is a Senior Software Engineer with a decade of experience building cloud networking and packet-processing software, currently at Arm after a long tenure leading device driver and orchestration work at Intel. He is a core contributor and reviewer on OpenStack Neutron, specializing in QoS and DSCP marking features that bridge kernel-level packet handling with cloud networking APIs. David has presented Neutron extensibility and DSCP marking at multiple OpenStack Summits, reflecting both deep technical knowledge and community leadership. His background in device drivers and software validation gives him a rare full-stack perspective on networking—from hardware interfaces to upstream open-source APIs.
10 years of coding experience
8 years of employment as a software developer
Bachelor (Honors) of Engineering (BEng), Computer and Electronic Engineering, Bachelor (Honors) of Engineering (BEng), Computer and Electronic Engineering at Galway-Mayo Institute of TechnologyLeaving certificate, Leaving certificate at Calasanctius College
Github Skills (10)
openvswitch10
qos10
openstack10
python10
networking10
service-design9
apidoc9
service-provider9
api9
unit-testing8
Programming languages (3)
Github contributions (5)
openstack/neutron
Jan 2016 - Nov 2019
OpenStack Networking (Neutron). Mirror of code maintained at opendev.org.
Role in this project:
Backend Developer
Backend DeveloperContributions:8 commits in 3 years 10 months
Contributions summary:David primarily contributed to the OpenStack Neutron project, focusing on implementing and refining features related to Quality of Service (QoS). Their work includes adding support for DSCP QoS rules, which involved both front-end and back-end implementations. The user also addressed a bug related to deleting DSCP marking rules and ensured the retention of port information. Furthermore, they migrated the DSCP backend from using ofctl to native QoS implementation and refactored the corresponding code.
ospfopenflownetwork-automationnetworkingsdn
openstack/neutron-classifier
Sep 2017 - Jan 2018
Contributions:2 commits in 4 months
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