Matthew Parnell
Senior Software Engineer at Neo4j
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolMatthew Parnell is a Senior Software Engineer based in London with 11 years of technical experience transitioning from neutrino particle physics research to backend engineering at Neo4j. He has focused on kernel-level backend and database work, contributing to performance and maintainability improvements in the flagship neo4j/neo4j repository. His background in experimental physics—incl. hands-on fieldwork at SNOLAB and teaching Java to undergraduates—gives him strong debugging instincts, rigorous testing habits, and clear technical communication. Matthew combines safety-conscious, methodical problem solving from lab environments with production-grade engineering on graph database internals. He is motivated by deep technical challenges and continuous growth within the Node/Neo community.
11 years of coding experience
3 years of employment as a software developer
GCSEs and A-Levels, GCSEs and A-Levels at Chipping Campden SchoolDoctor of Philosophy (PhD), Neutrino Particle Physics (withdrew due to health), Withdrew due to health, Doctor of Philosophy (PhD), Neutrino Particle Physics (withdrew due to health), Withdrew due to health at Lancaster University
English
Github Skills (7)
javas10
refactoring10
database-design10
refactor10
java10
testing9
performance-optimization9
Programming languages (16)
Github contributions (5)
neo4j/neo4j
Apr 2021 - Nov 2022
Graphs for Everyone
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:172 commits, 33 comments, 10 issues in 1 year 6 months
Contributions summary:Matthew's commits primarily focused on enhancing the performance and maintainability of the "toString" method for handling index definitions within the Neo4j database. The changes were made in both core kernel and community-it projects. The user also removed hardcoded values in the test.
neo4j-databasedirected-acyclic-graphnosqlgraphsdatabase
parnmatt/snoing
Jun 2016 - Oct 2018
Contributions:56 pushes, 13 branches in 2 years 4 months
methodfallinstallationsky
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