Roland Swingler
Data Scientist
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolRoland Swingler is a data scientist with 18 years of software engineering experience, currently building routing algorithms at Beeline and previously shaping pricing and rider planning at Deliveroo. He blends strong Python and Ruby skills with deep database expertise—evidenced by substantive contributions to the widely used Sequel Ruby toolkit fixing schema, adapter and casting issues. His background spans senior engineering and data roles across startups and product teams (Lyst, Thread.com), giving him a pragmatic mix of production engineering and analytical modeling. Trained in statistics at The Open University and with a humanities BA from Cambridge, he brings both quantitative rigor and clear communication to complex technical problems.
18 years of coding experience
8 years of employment as a software developer
Diploma in Statistics, Diploma in Statistics at The Open UniversityBA, English, BA, English at University of Cambridge
Stackoverflow
1,186reputation
40kreached
9answers
5questions
Github Skills (12)
sql10
database-design10
mysql10
ruby10
testing8
modularity6
authentication6
outlook6
python6
exchange-server6
ruby-on-rails6
oauth6
Programming languages (6)
Github contributions (5)
jeremyevans/sequel
Mar 2010 - Jan 2012
Sequel: The Database Toolkit for Ruby
Role in this project:
Backend & Database Engineer
Backend & Database EngineerContributions:5 commits in 1 year 10 months
Contributions summary:Roland primarily contributed to the Sequel project by addressing database-related issues and enhancing the library's functionality. They fixed bugs related to database schema dumping, particularly handling primary keys and database-specific types. Further improvements included fixing a bug in the MySQL adapter regarding how tinyint(4) values are cast to booleans, and adding options for timeout settings and partial index handling. Their work demonstrates a deep understanding of database internals and adapter implementations.
databaseruby
knaveofdiamonds/sequel_migration_builder
Jun 2010 - Sep 2014
Contributions:106 commits in 4 years 3 months
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