Maria Karpathiotaki
Principal Engineer at On
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolMaria Karpathiotaki is a Principal Engineer based in London with 8 years of experience delivering distributed systems at scale. She is currently at On, holding the Principal Engineer role since May 2025, driving architectural excellence and cross-team delivery. During her time at Depop (2021–2024) she led multiple squads across Data Platform, ML Ops, and CX, redesigning the Datalake to enable data delivery up to 7 hours faster and data freshness to hourly, while guiding open-source versus vendor evaluations and proofs-of-concept. She championed Operational Excellence, establishing metrics, reducing incident discovery times, mentoring peers, and contributing blogs and talks to growth and diversity initiatives. Her earlier roles at Zalando, IBM, and academic work in Semantic Web underscore a track record of building data-intensive systems, migrations to Kubernetes, and strong Python/Scala expertise; she holds an MSc in Advanced Information Systems from Athens and a 5-year ECE diploma.
9 years of coding experience
11 years of employment as a software developer
Master of Science (MSc), Advanced Information Systems, 9.31/10.0 (1rst), Master of Science (MSc), Advanced Information Systems, 9.31/10.0 (1rst) at Ethnikon kai Kapodistriakon Panepistimion Athinon5-year Engineering Diploma, Electrical and Computer Engineering, 7.46/10.0 (2:1), 5-year Engineering Diploma, Electrical and Computer Engineering, 7.46/10.0 (2:1) at Panepistimion Patron
Greek, English
Github Skills (23)
rethinkdb10
java9
barrage9
kafka9
backbonejs9
apache-kafka9
management8
apache7
exporter4
java-agent2
jmx2
agent2
metadata1
semantics1
data-management1
Programming languages (2)
Github contributions (5)
mkarpathiotaki/sbt-elasticsearch
Jun 2017 - Jan 2018
Contributions:1 push, 10 branches in 7 months
testingsbtsbt-pluginelasticsearch
mkarpathiotaki/awesome-leading-and-managing
Oct 2024 - Oct 2024
Awesome List of resources on leading people and being a manager. Geared toward tech, but potentially useful to anyone.
Contributions:1 push in 1 day
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