John Harrison
United Kingdom
Summary
👤
SeniorJohn Harrison is a Technical Lead with 18 years’ experience building data platforms and ML-enabled products, currently leading the team that develops Auto Trader UK’s cloud-based Data Lake, Warehouse and valuation services. He combines pragmatic engineering with coaching and product-focused delivery, translating complex marketplace questions into reliable, production-ready data systems. Comfortable marrying open-source tools with SaaS to balance efficiency, cost and sustainability, he has a background that spans research, Python development and platform architecture. Based in East Devon, he brings a hands-on, maker mentality—evident in DIY projects and logistical problem solving—that informs how he optimises resources and processes. Colleagues describe him as a builder who prefers demonstrable outcomes over jargon, with a knack for turning messy real-world data into valuable, maintainable insights.
18 years of coding experience
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (34)
oai-pmh10
python10
harvest10
fastapi9
json-api9
api9
wiremock8
pytest8
mlflow8
dbt8
api-client8
test-container7
search-engine7
mlops7
xml6
Programming languages (3)
Github contributions (5)
bloomonkey/oai-harvest
Feb 2013 - Jun 2021
Python package for harvesting records from OAI-PMH provider(s).
Contributions:2 releases, 1 review, 171 commits in 8 years 5 months
oai-pmhpythonharvest-dataharvestingharvester
cheshire3/archiveshub
Sep 2011 - Aug 2014
Contributions:1110 commits, 1 PR, 1 comment in 2 years 11 months
cataloguefindingeadarchival
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