Lewis Juggins
Senior Backend Engineer at Monzo Bank
Colchester, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolLewis Juggins is a Senior Backend Engineer with 11 years of experience building reliable services for fintech and automotive technology, currently shaping backend systems at Monzo. He progressed from placement to Technical Lead at Cognitran, delivering production software across automotive projects and leading teams through complex integrations. A strong problem-solver with a keen interest in programming, Lewis blends hands-on engineering with architectural thinking to improve performance and reliability. He is also an active open-source contributor, notably refactoring and modernising the pytradfri IKEA Trådfri Python library with asyncio support and DTLS identity updates—demonstrating an eye for API consistency and I/O-agnostic design. Based in Colchester, England, he holds a First Class BSc in Software Engineering and favors pragmatic, testable solutions that scale.
11 years of coding experience
8 years of employment as a software developer
BSc Hons Sandwich, Computer Science in Software Engineering, First Class, BSc Hons Sandwich, Computer Science in Software Engineering, First Class at University of HertfordshireMaltings AcademyBTEC, National IT Practitioners Certificate (Level 3), Distinction, Distinction, BTEC, National IT Practitioners Certificate (Level 3), Distinction, Distinction at Chelmsford College
English
Github Skills (10)
python10
api-design10
asyncio10
networking9
debug8
iot8
debugging8
home-automation7
docker4
dockers4
Programming languages (18)
Github contributions (5)
home-assistant-libs/pytradfri
May 2017 - Oct 2018
IKEA Trådfri/Tradfri API. Control and observe your lights from Python. Examples available. On pypi. Sans-io.
Role in this project:
Backend Developer
Backend DeveloperContributions:4 releases, 32 commits, 33 PRs in 1 year 4 months
Contributions summary:Lewis primarily contributed to the pytradfri library, an API for controlling IKEA Trådfri/Tradfri devices. Their work included refactoring the code to use a command pattern for I/O independence, adding support for asyncio, fixing various bugs, and improving the overall performance of the library. The user also addressed issues with observation, ensured consistent API return types, and updated the library to use the new DTLS Identity method, demonstrating a strong understanding of the project's core functionality and architecture. The contributions also included improvements to the examples and documentation.
available-on-pypipythonpypisans-ioprofanity
lwis/miband-notifier
Dec 2014 - Jul 2015
Contributions:10 releases, 66 commits, 10 PRs in 7 months
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