John Hartley
Senior Software Developer at Raising IT
Witham, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolJohn Hartley is a Senior Software Developer with nine years of hands-on full-stack experience modernising legacy systems and delivering scalable .NET Core and Azure-based solutions. He has driven teams from failing monoliths to service-oriented, event-driven architectures, led major integrations (notably a company- and client-wide GoCardless upgrade), and played a key role in technical due diligence during an acquisition. Legally blind and having navigated a period of family caregiving, he returns to work with renewed focus and a track record of mentorship, hiring, and incident leadership. An active community contributor, he authored an unofficial GoCardless API client that influenced the official API and has written 300+ StackOverflow answers demonstrating practical problem-solving. Colleagues know him for pragmatic prioritisation, automating brittle processes (such as domain monitoring for 600+ domains), and an ability to turn legacy codebases testable and maintainable.
9 years of coding experience
5 years of employment as a software developer
CS50x: Introduction to Computer Science, Computer Science, Pass, CS50x: Introduction to Computer Science, Computer Science, Pass at edX / HarvardX (Harvard University's online school)Rickstones School
English
Github Skills (17)
gocardless10
api-client9
api9
dotnet8
csharp8
graph-algorithms7
data-structure7
rust6
cryptography6
graph6
security6
crypto5
vscode-extension3
intellisense2
visual-studio-code2
Programming languages (3)
Github contributions (5)
john-hartley/rover-test
Mar 2017 - Mar 2017
Contributions:12 pushes, 4 branches in 4 days
john-hartley/particle-systems
Jun 2019 - Jun 2019
Contributions:11 pushes, 1 branch in 2 days
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